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TFT_eSPI/TFT_eSPI.cpp
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/***************************************************
Arduino TFT graphics library targeted at 32 bit
processors such as ESP32, ESP8266 and STM32.
This is a stand-alone library that contains the
hardware driver, the graphics functions and the
proportional fonts.
The larger fonts are Run Length Encoded to reduce their
size.
Created by Bodmer 2/12/16
Last update by Bodmer 20/03/20
****************************************************/
#include "TFT_eSPI.h"
#include <esprandom.h>
#include <randomutils.h>
#if defined (ESP32)
#if defined(CONFIG_IDF_TARGET_ESP32S3)
#include "Processors/TFT_eSPI_ESP32_S3.c" // Tested with SPI and 8 bit parallel
#elif defined(CONFIG_IDF_TARGET_ESP32C3)
#include "Processors/TFT_eSPI_ESP32_C3.c" // Tested with SPI (8 bit parallel will probably work too!)
#else
#include "Processors/TFT_eSPI_ESP32.c"
#endif
#elif defined (ESP8266)
#include "Processors/TFT_eSPI_ESP8266.c"
#elif defined (STM32) // (_VARIANT_ARDUINO_STM32_) stm32_def.h
#include "Processors/TFT_eSPI_STM32.c"
#elif defined (ARDUINO_ARCH_RP2040) || defined (ARDUINO_ARCH_MBED) // Raspberry Pi Pico
#include "Processors/TFT_eSPI_RP2040.c"
#else
#include "Processors/TFT_eSPI_Generic.c"
#endif
#ifndef SPI_BUSY_CHECK
#define SPI_BUSY_CHECK
#endif
#include "freertos/task.h"
#include "wiring_shift.h"
#include "esp32-hal-gpio.h"
#include "esp32-hal-misc.h"
namespace {
void delay(uint32_t ms)
{
vTaskDelay(ms / portTICK_PERIOD_MS);
}
}
// Clipping macro for pushImage
#define PI_CLIP \
if (_vpOoB) return; \
x+= _xDatum; \
y+= _yDatum; \
\
if ((x >= _vpW) || (y >= _vpH)) return; \
\
int32_t dx = 0; \
int32_t dy = 0; \
int32_t dw = w; \
int32_t dh = h; \
\
if (x < _vpX) { dx = _vpX - x; dw -= dx; x = _vpX; } \
if (y < _vpY) { dy = _vpY - y; dh -= dy; y = _vpY; } \
\
if ((x + dw) > _vpW ) dw = _vpW - x; \
if ((y + dh) > _vpH ) dh = _vpH - y; \
\
if (dw < 1 || dh < 1) return;
/***************************************************************************************
** Function name: Legacy - deprecated
** Description: Start/end transaction
***************************************************************************************/
void TFT_eSPI::spi_begin() {begin_tft_write();}
void TFT_eSPI::spi_end() { end_tft_write();}
void TFT_eSPI::spi_begin_read() {begin_tft_read(); }
void TFT_eSPI::spi_end_read() { end_tft_read(); }
/***************************************************************************************
** Function name: begin_tft_write (was called spi_begin)
** Description: Start SPI transaction for writes and select TFT
***************************************************************************************/
inline void TFT_eSPI::begin_tft_write(void){
if (locked) {
locked = false; // Flag to show SPI access now unlocked
#if defined (SPI_HAS_TRANSACTION) && defined (SUPPORT_TRANSACTIONS) && !defined(TFT_PARALLEL_8_BIT) && !defined(RP2040_PIO_INTERFACE)
spi.beginTransaction(SPISettings(SPI_FREQUENCY, MSBFIRST, TFT_SPI_MODE));
#endif
CS_L;
SET_BUS_WRITE_MODE; // Some processors (e.g. ESP32) allow recycling the tx buffer when rx is not used
}
}
// Non-inlined version to permit override
void TFT_eSPI::begin_nin_write(void){
if (locked) {
locked = false; // Flag to show SPI access now unlocked
#if defined (SPI_HAS_TRANSACTION) && defined (SUPPORT_TRANSACTIONS) && !defined(TFT_PARALLEL_8_BIT) && !defined(RP2040_PIO_INTERFACE)
spi.beginTransaction(SPISettings(SPI_FREQUENCY, MSBFIRST, TFT_SPI_MODE));
#endif
CS_L;
SET_BUS_WRITE_MODE; // Some processors (e.g. ESP32) allow recycling the tx buffer when rx is not used
}
}
/***************************************************************************************
** Function name: end_tft_write (was called spi_end)
** Description: End transaction for write and deselect TFT
***************************************************************************************/
inline void TFT_eSPI::end_tft_write(void){
return;
if(!inTransaction) { // Flag to stop ending transaction during multiple graphics calls
if (!locked) { // Locked when beginTransaction has been called
locked = true; // Flag to show SPI access now locked
SPI_BUSY_CHECK; // Check send complete and clean out unused rx data
CS_H;
SET_BUS_READ_MODE; // In case bus has been configured for tx only
#if defined (SPI_HAS_TRANSACTION) && defined (SUPPORT_TRANSACTIONS) && !defined(TFT_PARALLEL_8_BIT) && !defined(RP2040_PIO_INTERFACE)
spi.endTransaction();
#endif
}
}
}
// Non-inlined version to permit override
inline void TFT_eSPI::end_nin_write(void){
return;
if(!inTransaction) { // Flag to stop ending transaction during multiple graphics calls
if (!locked) { // Locked when beginTransaction has been called
locked = true; // Flag to show SPI access now locked
SPI_BUSY_CHECK; // Check send complete and clean out unused rx data
CS_H;
SET_BUS_READ_MODE; // In case SPI has been configured for tx only
#if defined (SPI_HAS_TRANSACTION) && defined (SUPPORT_TRANSACTIONS) && !defined(TFT_PARALLEL_8_BIT) && !defined(RP2040_PIO_INTERFACE)
spi.endTransaction();
#endif
}
}
}
/***************************************************************************************
** Function name: begin_tft_read (was called spi_begin_read)
** Description: Start transaction for reads and select TFT
***************************************************************************************/
// Reads require a lower SPI clock rate than writes
inline void TFT_eSPI::begin_tft_read(void){
DMA_BUSY_CHECK; // Wait for any DMA transfer to complete before changing SPI settings
#if defined (SPI_HAS_TRANSACTION) && defined (SUPPORT_TRANSACTIONS) && !defined(TFT_PARALLEL_8_BIT) && !defined(RP2040_PIO_INTERFACE)
if (locked) {
locked = false;
spi.beginTransaction(SPISettings(SPI_READ_FREQUENCY, MSBFIRST, TFT_SPI_MODE));
CS_L;
}
#else
#if !defined(TFT_PARALLEL_8_BIT) && !defined(RP2040_PIO_INTERFACE)
spi.setFrequency(SPI_READ_FREQUENCY);
#endif
CS_L;
#endif
SET_BUS_READ_MODE;
}
/***************************************************************************************
** Function name: end_tft_read (was called spi_end_read)
** Description: End transaction for reads and deselect TFT
***************************************************************************************/
inline void TFT_eSPI::end_tft_read(void){
#if defined (SPI_HAS_TRANSACTION) && defined (SUPPORT_TRANSACTIONS) && !defined(TFT_PARALLEL_8_BIT) && !defined(RP2040_PIO_INTERFACE)
if(!inTransaction) {
if (!locked) {
locked = true;
CS_H;
spi.endTransaction();
}
}
#else
#if !defined(TFT_PARALLEL_8_BIT) && !defined(RP2040_PIO_INTERFACE)
spi.setFrequency(SPI_FREQUENCY);
#endif
if(!inTransaction) {CS_H;}
#endif
SET_BUS_WRITE_MODE;
}
/***************************************************************************************
** Function name: setViewport
** Description: Set the clipping region for the TFT screen
***************************************************************************************/
void TFT_eSPI::setViewport(int32_t x, int32_t y, int32_t w, int32_t h, bool vpDatum)
{
// Viewport metrics (not clipped)
_xDatum = x; // Datum x position in screen coordinates
_yDatum = y; // Datum y position in screen coordinates
_xWidth = w; // Viewport width
_yHeight = h; // Viewport height
// Full size default viewport
_vpDatum = false; // Datum is at top left corner of screen (true = top left of viewport)
_vpOoB = false; // Out of Bounds flag (true is all of viewport is off screen)
_vpX = 0; // Viewport top left corner x coordinate
_vpY = 0; // Viewport top left corner y coordinate
_vpW = width(); // Equivalent of TFT width (Nb: viewport right edge coord + 1)
_vpH = height(); // Equivalent of TFT height (Nb: viewport bottom edge coord + 1)
// Clip viewport to screen area
if (x<0) { w += x; x = 0; }
if (y<0) { h += y; y = 0; }
if ((x + w) > width() ) { w = width() - x; }
if ((y + h) > height() ) { h = height() - y; }
//Serial.print(" x=");Serial.print( x);Serial.print(", y=");Serial.print( y);
//Serial.print(", w=");Serial.print(w);Serial.print(", h=");Serial.println(h);
// Check if viewport is entirely out of bounds
if (w < 1 || h < 1)
{
// Set default values and Out of Bounds flag in case of error
_xDatum = 0;
_yDatum = 0;
_xWidth = width();
_yHeight = height();
_vpOoB = true; // Set Out of Bounds flag to inhibit all drawing
return;
}
if (!vpDatum)
{
_xDatum = 0; // Reset to top left of screen if not using a viewport datum
_yDatum = 0;
_xWidth = width();
_yHeight = height();
}
// Store the clipped screen viewport metrics and datum position
_vpX = x;
_vpY = y;
_vpW = x + w;
_vpH = y + h;
_vpDatum = vpDatum;
//Serial.print(" _xDatum=");Serial.print( _xDatum);Serial.print(", _yDatum=");Serial.print( _yDatum);
//Serial.print(", _xWidth=");Serial.print(_xWidth);Serial.print(", _yHeight=");Serial.println(_yHeight);
//Serial.print(" _vpX=");Serial.print( _vpX);Serial.print(", _vpY=");Serial.print( _vpY);
//Serial.print(", _vpW=");Serial.print(_vpW);Serial.print(", _vpH=");Serial.println(_vpH);
}
/***************************************************************************************
** Function name: checkViewport
** Description: Check if any part of specified area is visible in viewport
***************************************************************************************/
// Note: Setting w and h to 1 will check if coordinate x,y is in area
bool TFT_eSPI::checkViewport(int32_t x, int32_t y, int32_t w, int32_t h)
{
if (_vpOoB) return false;
x+= _xDatum;
y+= _yDatum;
if ((x >= _vpW) || (y >= _vpH)) return false;
int32_t dx = 0;
int32_t dy = 0;
int32_t dw = w;
int32_t dh = h;
if (x < _vpX) { dx = _vpX - x; dw -= dx; x = _vpX; }
if (y < _vpY) { dy = _vpY - y; dh -= dy; y = _vpY; }
if ((x + dw) > _vpW ) dw = _vpW - x;
if ((y + dh) > _vpH ) dh = _vpH - y;
if (dw < 1 || dh < 1) return false;
return true;
}
/***************************************************************************************
** Function name: resetViewport
** Description: Reset viewport to whole TFT screen, datum at 0,0
***************************************************************************************/
void TFT_eSPI::resetViewport(void)
{
// Reset viewport to the whole screen (or sprite) area
_vpDatum = false;
_vpOoB = false;
_xDatum = 0;
_yDatum = 0;
_vpX = 0;
_vpY = 0;
_vpW = width();
_vpH = height();
_xWidth = width();
_yHeight = height();
}
/***************************************************************************************
** Function name: getViewportX
** Description: Get x position of the viewport datum
***************************************************************************************/
int32_t TFT_eSPI::getViewportX(void)
{
return _xDatum;
}
/***************************************************************************************
** Function name: getViewportY
** Description: Get y position of the viewport datum
***************************************************************************************/
int32_t TFT_eSPI::getViewportY(void)
{
return _yDatum;
}
/***************************************************************************************
** Function name: getViewportWidth
** Description: Get width of the viewport
***************************************************************************************/
int32_t TFT_eSPI::getViewportWidth(void)
{
return _xWidth;
}
/***************************************************************************************
** Function name: getViewportHeight
** Description: Get height of the viewport
***************************************************************************************/
int32_t TFT_eSPI::getViewportHeight(void)
{
return _yHeight;
}
/***************************************************************************************
** Function name: getViewportDatum
** Description: Get datum flag of the viewport (true = viewport corner)
***************************************************************************************/
bool TFT_eSPI::getViewportDatum(void)
{
return _vpDatum;
}
/***************************************************************************************
** Function name: frameViewport
** Description: Draw a frame inside or outside the viewport of width w
***************************************************************************************/
void TFT_eSPI::frameViewport(uint16_t color, int32_t w)
{
// Save datum position
bool _dT = _vpDatum;
// If w is positive the frame is drawn inside the viewport
// a large positive width will clear the screen inside the viewport
if (w>0)
{
// Set vpDatum true to simplify coordinate derivation
_vpDatum = true;
fillRect(0, 0, _vpW - _vpX, w, color); // Top
fillRect(0, w, w, _vpH - _vpY - w - w, color); // Left
fillRect(_xWidth - w, w, w, _yHeight - w - w, color); // Right
fillRect(0, _yHeight - w, _xWidth, w, color); // Bottom
}
else
// If w is negative the frame is drawn outside the viewport
// a large negative width will clear the screen outside the viewport
{
w = -w;
// Save old values
int32_t _xT = _vpX; _vpX = 0;
int32_t _yT = _vpY; _vpY = 0;
int32_t _wT = _vpW;
int32_t _hT = _vpH;
// Set vpDatum false so frame can be drawn outside window
_vpDatum = false; // When false the full width and height is accessed
_vpH = height();
_vpW = width();
// Draw frame
fillRect(_xT - w - _xDatum, _yT - w - _yDatum, _wT - _xT + w + w, w, color); // Top
fillRect(_xT - w - _xDatum, _yT - _yDatum, w, _hT - _yT, color); // Left
fillRect(_wT - _xDatum, _yT - _yDatum, w, _hT - _yT, color); // Right
fillRect(_xT - w - _xDatum, _hT - _yDatum, _wT - _xT + w + w, w, color); // Bottom
// Restore old values
_vpX = _xT;
_vpY = _yT;
_vpW = _wT;
_vpH = _hT;
}
// Restore vpDatum
_vpDatum = _dT;
}
/***************************************************************************************
** Function name: clipAddrWindow
** Description: Clip address window x,y,w,h to screen and viewport
***************************************************************************************/
bool TFT_eSPI::clipAddrWindow(int32_t *x, int32_t *y, int32_t *w, int32_t *h)
{
if (_vpOoB) return false; // Area is outside of viewport
*x+= _xDatum;
*y+= _yDatum;
if ((*x >= _vpW) || (*y >= _vpH)) return false; // Area is outside of viewport
// Crop drawing area bounds
if (*x < _vpX) { *w -= _vpX - *x; *x = _vpX; }
if (*y < _vpY) { *h -= _vpY - *y; *y = _vpY; }
if ((*x + *w) > _vpW ) *w = _vpW - *x;
if ((*y + *h) > _vpH ) *h = _vpH - *y;
if (*w < 1 || *h < 1) return false; // No area is inside viewport
return true; // Area is wholly or partially inside viewport
}
/***************************************************************************************
** Function name: clipWindow
** Description: Clip window xs,yx,xe,ye to screen and viewport
***************************************************************************************/
bool TFT_eSPI::clipWindow(int32_t *xs, int32_t *ys, int32_t *xe, int32_t *ye)
{
if (_vpOoB) return false; // Area is outside of viewport
*xs+= _xDatum;
*ys+= _yDatum;
*xe+= _xDatum;
*ye+= _yDatum;
if ((*xs >= _vpW) || (*ys >= _vpH)) return false; // Area is outside of viewport
if ((*xe < _vpX) || (*ye < _vpY)) return false; // Area is outside of viewport
// Crop drawing area bounds
if (*xs < _vpX) *xs = _vpX;
if (*ys < _vpY) *ys = _vpY;
if (*xe > _vpW) *xe = _vpW - 1;
if (*ye > _vpH) *ye = _vpH - 1;
return true; // Area is wholly or partially inside viewport
}
/***************************************************************************************
** Function name: TFT_eSPI
** Description: Constructor , we must use hardware SPI pins
***************************************************************************************/
TFT_eSPI::TFT_eSPI(int16_t w, int16_t h)
{
_init_width = _width = w; // Set by specific xxxxx_Defines.h file or by users sketch
_init_height = _height = h; // Set by specific xxxxx_Defines.h file or by users sketch
// Reset the viewport to the whole screen
resetViewport();
rotation = 0;
_fillbg = false; // Smooth font only at the moment, force text background fill
locked = true; // Transaction mutex lock flag to ensure begin/endTranaction pairing
inTransaction = false; // Flag to prevent multiple sequential functions to keep bus access open
lockTransaction = false; // start/endWrite lock flag to allow sketch to keep SPI bus access open
_booted = true; // Default attributes
_cp437 = true; // Legacy GLCD font bug fix
#if defined (FONT_FS_AVAILABLE) && defined (SMOOTH_FONT)
fs_font = true; // Smooth font filing system or array (fs_font = false) flag
#endif
#if defined (ESP32) && defined (CONFIG_SPIRAM_SUPPORT)
if (psramFound()) _psram_enable = true; // Enable the use of PSRAM (if available)
else
#endif
_psram_enable = false;
addr_row = 0xFFFF; // drawPixel command length optimiser
addr_col = 0xFFFF; // drawPixel command length optimiser
_xPivot = 0;
_yPivot = 0;
// Legacy support for bit GPIO masks
cspinmask = 0;
dcpinmask = 0;
wrpinmask = 0;
sclkpinmask = 0;
}
/***************************************************************************************
** Function name: initBus
** Description: initialise the SPI or parallel bus
***************************************************************************************/
void TFT_eSPI::initBus(void) {
#ifdef TFT_CS
pinMode(TFT_CS, OUTPUT);
digitalWrite(TFT_CS, HIGH); // Chip select high (inactive)
#endif
// Configure chip select for touchscreen controller if present
#ifdef TOUCH_CS
pinMode(TOUCH_CS, OUTPUT);
digitalWrite(TOUCH_CS, HIGH); // Chip select high (inactive)
#endif
// In parallel mode and with the RP2040 processor, the TFT_WR line is handled in the PIO
#if defined (TFT_WR) && !defined (ARDUINO_ARCH_RP2040) && !defined (ARDUINO_ARCH_MBED)
pinMode(TFT_WR, OUTPUT);
digitalWrite(TFT_WR, HIGH); // Set write strobe high (inactive)
#endif
#ifdef TFT_DC
pinMode(TFT_DC, OUTPUT);
digitalWrite(TFT_DC, HIGH); // Data/Command high = data mode
#endif
#ifdef TFT_RST
if (TFT_RST >= 0) {
pinMode(TFT_RST, OUTPUT);
digitalWrite(TFT_RST, HIGH); // Set high, do not share pin with another SPI device
}
#endif
#if defined (TFT_PARALLEL_8_BIT)
// Make sure read is high before we set the bus to output
pinMode(TFT_RD, OUTPUT);
digitalWrite(TFT_RD, HIGH);
#if !defined (ARDUINO_ARCH_RP2040) && !defined (ARDUINO_ARCH_MBED)// PIO manages pins
// Set TFT data bus lines to output
pinMode(TFT_D0, OUTPUT); digitalWrite(TFT_D0, HIGH);
pinMode(TFT_D1, OUTPUT); digitalWrite(TFT_D1, HIGH);
pinMode(TFT_D2, OUTPUT); digitalWrite(TFT_D2, HIGH);
pinMode(TFT_D3, OUTPUT); digitalWrite(TFT_D3, HIGH);
pinMode(TFT_D4, OUTPUT); digitalWrite(TFT_D4, HIGH);
pinMode(TFT_D5, OUTPUT); digitalWrite(TFT_D5, HIGH);
pinMode(TFT_D6, OUTPUT); digitalWrite(TFT_D6, HIGH);
pinMode(TFT_D7, OUTPUT); digitalWrite(TFT_D7, HIGH);
#endif
PARALLEL_INIT_TFT_DATA_BUS;
#endif
}
/***************************************************************************************
** Function name: begin
** Description: Included for backwards compatibility
***************************************************************************************/
void TFT_eSPI::begin(uint8_t tc)
{
init(tc);
}
/***************************************************************************************
** Function name: init (tc is tab colour for ST7735 displays only)
** Description: Reset, then initialise the TFT display registers
***************************************************************************************/
void TFT_eSPI::init(uint8_t tc)
{
if (_booted)
{
initBus();
#if !defined (ESP32) && !defined(TFT_PARALLEL_8_BIT) && !defined(ARDUINO_ARCH_RP2040) && !defined (ARDUINO_ARCH_MBED)
// Legacy bitmasks for GPIO
#if defined (TFT_CS) && (TFT_CS >= 0)
cspinmask = (uint32_t) digitalPinToBitMask(TFT_CS);
#endif
#if defined (TFT_DC) && (TFT_DC >= 0)
dcpinmask = (uint32_t) digitalPinToBitMask(TFT_DC);
#endif
#if defined (TFT_WR) && (TFT_WR >= 0)
wrpinmask = (uint32_t) digitalPinToBitMask(TFT_WR);
#endif
#if defined (TFT_SCLK) && (TFT_SCLK >= 0)
sclkpinmask = (uint32_t) digitalPinToBitMask(TFT_SCLK);
#endif
#if defined (TFT_SPI_OVERLAP) && defined (ESP8266)
// Overlap mode SD0=MISO, SD1=MOSI, CLK=SCLK must use D3 as CS
// pins(int8_t sck, int8_t miso, int8_t mosi, int8_t ss);
//spi.pins( 6, 7, 8, 0);
spi.pins(6, 7, 8, 0);
#endif
spi.begin(); // This will set HMISO to input
#else
#if !defined(TFT_PARALLEL_8_BIT) && !defined(RP2040_PIO_INTERFACE)
#if defined (TFT_MOSI) && !defined (TFT_SPI_OVERLAP) && !defined(ARDUINO_ARCH_RP2040) && !defined (ARDUINO_ARCH_MBED)
spi.begin(TFT_SCLK, TFT_MISO, TFT_MOSI, -1); // This will set MISO to input
#else
spi.begin(); // This will set MISO to input
#endif
#endif
#endif
lockTransaction = false;
inTransaction = false;
locked = true;
INIT_TFT_DATA_BUS;
#if defined (TFT_CS) && !defined(RP2040_PIO_INTERFACE)
// Set to output once again in case MISO is used for CS
pinMode(TFT_CS, OUTPUT);
digitalWrite(TFT_CS, HIGH); // Chip select high (inactive)
#elif defined (ESP8266) && !defined (TFT_PARALLEL_8_BIT) && !defined (RP2040_PIO_SPI)
spi.setHwCs(1); // Use hardware SS toggling
#endif
// Set to output once again in case MISO is used for DC
#if defined (TFT_DC) && !defined(RP2040_PIO_INTERFACE)
pinMode(TFT_DC, OUTPUT);
digitalWrite(TFT_DC, HIGH); // Data/Command high = data mode
#endif
_booted = false;
end_tft_write();
} // end of: if just _booted
// Toggle RST low to reset
#ifdef TFT_RST
#if !defined(RP2040_PIO_INTERFACE)
// Set to output once again in case MISO is used for TFT_RST
pinMode(TFT_RST, OUTPUT);
#endif
if (TFT_RST >= 0) {
digitalWrite(TFT_RST, HIGH);
delay(5);
digitalWrite(TFT_RST, LOW);
delay(20);
digitalWrite(TFT_RST, HIGH);
}
else writecommand(TFT_SWRST); // Software reset
#else
writecommand(TFT_SWRST); // Software reset
#endif
delay(150); // Wait for reset to complete
begin_tft_write();
tc = tc; // Suppress warning
// This loads the driver specific initialisation code <<<<<<<<<<<<<<<<<<<<< ADD NEW DRIVERS TO THE LIST HERE <<<<<<<<<<<<<<<<<<<<<<<
#if defined (ILI9341_DRIVER) || defined(ILI9341_2_DRIVER) || defined (ILI9342_DRIVER)
#include "TFT_Drivers/ILI9341_Init.h"
#elif defined (ST7735_DRIVER)
tabcolor = tc;
#include "TFT_Drivers/ST7735_Init.h"
#elif defined (ILI9163_DRIVER)
#include "TFT_Drivers/ILI9163_Init.h"
#elif defined (S6D02A1_DRIVER)
#include "TFT_Drivers/S6D02A1_Init.h"
#elif defined (ST7796_DRIVER)
#include "TFT_Drivers/ST7796_Init.h"
#elif defined (ILI9486_DRIVER)
#include "TFT_Drivers/ILI9486_Init.h"
#elif defined (ILI9481_DRIVER)
#include "TFT_Drivers/ILI9481_Init.h"
#elif defined (ILI9488_DRIVER)
#include "TFT_Drivers/ILI9488_Init.h"
#elif defined (HX8357D_DRIVER)
#include "TFT_Drivers/HX8357D_Init.h"
#elif defined (ST7789_DRIVER)
#include "TFT_Drivers/ST7789_Init.h"
#elif defined (R61581_DRIVER)
#include "TFT_Drivers/R61581_Init.h"
#elif defined (RM68140_DRIVER)
#include "TFT_Drivers/RM68140_Init.h"
#elif defined (ST7789_2_DRIVER)
#include "TFT_Drivers/ST7789_2_Init.h"
#elif defined (SSD1351_DRIVER)
#include "TFT_Drivers/SSD1351_Init.h"
#elif defined (SSD1963_DRIVER)
#include "TFT_Drivers/SSD1963_Init.h"
#elif defined (GC9A01_DRIVER)
#include "TFT_Drivers/GC9A01_Init.h"
#elif defined (ILI9225_DRIVER)
#include "TFT_Drivers/ILI9225_Init.h"
#elif defined (RM68120_DRIVER)
#include "TFT_Drivers/RM68120_Init.h"
#elif defined (HX8357B_DRIVER)
#include "TFT_Drivers/HX8357B_Init.h"
#elif defined (HX8357C_DRIVER)
#include "TFT_Drivers/HX8357C_Init.h"
#endif
#ifdef TFT_INVERSION_ON
writecommand(TFT_INVON);
#endif
#ifdef TFT_INVERSION_OFF
writecommand(TFT_INVOFF);
#endif
end_tft_write();
setRotation(rotation);
#if defined (TFT_BL) && defined (TFT_BACKLIGHT_ON)
pinMode(TFT_BL, OUTPUT);
digitalWrite(TFT_BL, TFT_BACKLIGHT_ON);
#else
#if defined (TFT_BL) && defined (M5STACK)
// Turn on the back-light LED
pinMode(TFT_BL, OUTPUT);
digitalWrite(TFT_BL, HIGH);
#endif
#endif
}
void TFT_eSPI::Write_16(uint16_t v)
{
tft_Write_16(v);
}
/***************************************************************************************
** Function name: setRotation
** Description: rotate the screen orientation m = 0-3 or 4-7 for BMP drawing
***************************************************************************************/
void TFT_eSPI::setRotation(uint8_t m)
{
begin_tft_write();
// This loads the driver specific rotation code <<<<<<<<<<<<<<<<<<<<< ADD NEW DRIVERS TO THE LIST HERE <<<<<<<<<<<<<<<<<<<<<<<
#if defined (ILI9341_DRIVER) || defined(ILI9341_2_DRIVER) || defined (ILI9342_DRIVER)
#include "TFT_Drivers/ILI9341_Rotation.h"
#elif defined (ST7735_DRIVER)
#include "TFT_Drivers/ST7735_Rotation.h"
#elif defined (ILI9163_DRIVER)
#include "TFT_Drivers/ILI9163_Rotation.h"
#elif defined (S6D02A1_DRIVER)
#include "TFT_Drivers/S6D02A1_Rotation.h"
#elif defined (ST7796_DRIVER)
#include "TFT_Drivers/ST7796_Rotation.h"
#elif defined (ILI9486_DRIVER)
#include "TFT_Drivers/ILI9486_Rotation.h"
#elif defined (ILI9481_DRIVER)
#include "TFT_Drivers/ILI9481_Rotation.h"
#elif defined (ILI9488_DRIVER)
#include "TFT_Drivers/ILI9488_Rotation.h"
#elif defined (HX8357D_DRIVER)
#include "TFT_Drivers/HX8357D_Rotation.h"
#elif defined (ST7789_DRIVER)
#include "TFT_Drivers/ST7789_Rotation.h"
#elif defined (R61581_DRIVER)
#include "TFT_Drivers/R61581_Rotation.h"
#elif defined (RM68140_DRIVER)
#include "TFT_Drivers/RM68140_Rotation.h"
#elif defined (ST7789_2_DRIVER)
#include "TFT_Drivers/ST7789_2_Rotation.h"
#elif defined (SSD1351_DRIVER)
#include "TFT_Drivers/SSD1351_Rotation.h"
#elif defined (SSD1963_DRIVER)
#include "TFT_Drivers/SSD1963_Rotation.h"
#elif defined (GC9A01_DRIVER)
#include "TFT_Drivers/GC9A01_Rotation.h"
#elif defined (ILI9225_DRIVER)
#include "TFT_Drivers/ILI9225_Rotation.h"
#elif defined (RM68120_DRIVER)
#include "TFT_Drivers/RM68120_Rotation.h"
#elif defined (HX8357B_DRIVER)
#include "TFT_Drivers/HX8357B_Rotation.h"
#elif defined (HX8357C_DRIVER)
#include "TFT_Drivers/HX8357C_Rotation.h"
#endif
delayMicroseconds(10);
end_tft_write();
addr_row = 0xFFFF;
addr_col = 0xFFFF;
// Reset the viewport to the whole screen
resetViewport();
}
/***************************************************************************************
** Function name: commandList, used for FLASH based lists only (e.g. ST7735)
** Description: Get initialisation commands from FLASH and send to TFT
***************************************************************************************/
void TFT_eSPI::commandList (const uint8_t *addr)
{
uint8_t numCommands;
uint8_t numArgs;
uint8_t ms;
numCommands = pgm_read_byte(addr++); // Number of commands to follow
while (numCommands--) // For each command...
{
writecommand(pgm_read_byte(addr++)); // Read, issue command
numArgs = pgm_read_byte(addr++); // Number of args to follow
ms = numArgs & TFT_INIT_DELAY; // If hibit set, delay follows args
numArgs &= ~TFT_INIT_DELAY; // Mask out delay bit
while (numArgs--) // For each argument...
{
writedata(pgm_read_byte(addr++)); // Read, issue argument
}
if (ms)
{
ms = pgm_read_byte(addr++); // Read post-command delay time (ms)
delay( (ms==255 ? 500 : ms) );
}
}
}
/***************************************************************************************
** Function name: spiwrite
** Description: Write 8 bits to SPI port (legacy support only)
***************************************************************************************/
void TFT_eSPI::spiwrite(uint8_t c)
{
begin_tft_write();
tft_Write_8(c);
end_tft_write();
}
/***************************************************************************************
** Function name: writecommand
** Description: Send an 8 bit command to the TFT
***************************************************************************************/
#ifndef RM68120_DRIVER
void TFT_eSPI::writecommand(uint8_t c)
{
begin_tft_write();
DC_C;
tft_Write_8(c);
DC_D;
end_tft_write();
}
#else
void TFT_eSPI::writecommand(uint16_t c)
{
begin_tft_write();
DC_C;
tft_Write_16(c);
DC_D;
end_tft_write();
}
void TFT_eSPI::writeRegister(uint16_t c, uint8_t d)
{
begin_tft_write();
DC_C;
tft_Write_16(c);
DC_D;
tft_Write_8(d);
end_tft_write();
}
#endif
/***************************************************************************************
** Function name: writedata
** Description: Send a 8 bit data value to the TFT
***************************************************************************************/
void TFT_eSPI::writedata(uint8_t d)
{
begin_tft_write();
DC_D; // Play safe, but should already be in data mode
tft_Write_8(d);
CS_L; // Allow more hold time for low VDI rail
end_tft_write();
}
/***************************************************************************************
** Function name: readcommand8
** Description: Read a 8 bit data value from an indexed command register
***************************************************************************************/
uint8_t TFT_eSPI::readcommand8(uint8_t cmd_function, uint8_t index)
{
uint8_t reg = 0;
#if defined(TFT_PARALLEL_8_BIT) || defined(RP2040_PIO_INTERFACE)
writecommand(cmd_function); // Sets DC and CS high
busDir(dir_mask, INPUT);
CS_L;
// Read nth parameter (assumes caller discards 1st parameter or points index to 2nd)
while(index--) reg = readByte();
busDir(dir_mask, OUTPUT);
CS_H;
#else // SPI interface
// Tested with ILI9341 set to Interface II i.e. IM [3:0] = "1101"
begin_tft_read();
index = 0x10 + (index & 0x0F);
DC_C; tft_Write_8(0xD9);
DC_D; tft_Write_8(index);
CS_H; // Some displays seem to need CS to be pulsed here, or is just a delay needed?
CS_L;
DC_C; tft_Write_8(cmd_function);
DC_D;
reg = tft_Read_8();
end_tft_read();
#endif
return reg;
}
/***************************************************************************************
** Function name: readcommand16
** Description: Read a 16 bit data value from an indexed command register
***************************************************************************************/
uint16_t TFT_eSPI::readcommand16(uint8_t cmd_function, uint8_t index)
{
uint32_t reg;
reg = (readcommand8(cmd_function, index + 0) << 8);
reg |= (readcommand8(cmd_function, index + 1) << 0);
return reg;
}
/***************************************************************************************
** Function name: readcommand32
** Description: Read a 32 bit data value from an indexed command register
***************************************************************************************/
uint32_t TFT_eSPI::readcommand32(uint8_t cmd_function, uint8_t index)
{
uint32_t reg;
reg = ((uint32_t)readcommand8(cmd_function, index + 0) << 24);
reg |= ((uint32_t)readcommand8(cmd_function, index + 1) << 16);
reg |= ((uint32_t)readcommand8(cmd_function, index + 2) << 8);
reg |= ((uint32_t)readcommand8(cmd_function, index + 3) << 0);
return reg;
}
/***************************************************************************************
** Function name: read pixel (for SPI Interface II i.e. IM [3:0] = "1101")
** Description: Read 565 pixel colours from a pixel
***************************************************************************************/
uint16_t TFT_eSPI::readPixel(int32_t x0, int32_t y0)
{
if (_vpOoB) return 0;
x0+= _xDatum;
y0+= _yDatum;
// Range checking
if ((x0 < _vpX) || (y0 < _vpY) ||(x0 >= _vpW) || (y0 >= _vpH)) return 0;
#if defined(TFT_PARALLEL_8_BIT) || defined(RP2040_PIO_INTERFACE)
CS_L;
readAddrWindow(x0, y0, 1, 1);
// Set masked pins D0- D7 to input
busDir(dir_mask, INPUT);
#if !defined (SSD1963_DRIVER)
// Dummy read to throw away don't care value
readByte();
#endif
// Fetch the 16 bit BRG pixel
//uint16_t rgb = (readByte() << 8) | readByte();
#if defined (ILI9341_DRIVER) || defined(ILI9341_2_DRIVER) || defined (ILI9488_DRIVER) || defined (SSD1963_DRIVER)// Read 3 bytes
// Read window pixel 24 bit RGB values and fill in LS bits
uint16_t rgb = ((readByte() & 0xF8) << 8) | ((readByte() & 0xFC) << 3) | (readByte() >> 3);
CS_H;
// Set masked pins D0- D7 to output
busDir(dir_mask, OUTPUT);
return rgb;
#else // ILI9481 or ILI9486 16 bit read
// Fetch the 16 bit BRG pixel
uint16_t bgr = (readByte() << 8) | readByte();
CS_H;
// Set masked pins D0- D7 to output
busDir(dir_mask, OUTPUT);
#ifdef ILI9486_DRIVER
return bgr;
#else
// Swap Red and Blue (could check MADCTL setting to see if this is needed)
return (bgr>>11) | (bgr<<11) | (bgr & 0x7E0);
#endif
#endif
#else // Not TFT_PARALLEL_8_BIT
// This function can get called during anti-aliased font rendering
// so a transaction may be in progress
bool wasInTransaction = inTransaction;
if (inTransaction) { inTransaction= false; end_tft_write();}
uint16_t color = 0;
begin_tft_read(); // Sets CS low
readAddrWindow(x0, y0, 1, 1);
#ifdef TFT_SDA_READ
begin_SDA_Read();
#endif
// Dummy read to throw away don't care value
tft_Read_8();
//#if !defined (ILI9488_DRIVER)
#if defined (ST7796_DRIVER)
// Read the 2 bytes
color = ((tft_Read_8()) << 8) | (tft_Read_8());
#else
// Read the 3 RGB bytes, colour is actually only in the top 6 bits of each byte
// as the TFT stores colours as 18 bits
uint8_t r = tft_Read_8();
uint8_t g = tft_Read_8();
uint8_t b = tft_Read_8();
color = color565(r, g, b);
#endif
/*
#else
// The 6 colour bits are in MS 6 bits of each byte, but the ILI9488 needs an extra clock pulse
// so bits appear shifted right 1 bit, so mask the middle 6 bits then shift 1 place left
uint8_t r = (tft_Read_8()&0x7E)<<1;
uint8_t g = (tft_Read_8()&0x7E)<<1;
uint8_t b = (tft_Read_8()&0x7E)<<1;
color = color565(r, g, b);
#endif
*/
CS_H;
#ifdef TFT_SDA_READ
end_SDA_Read();
#endif
end_tft_read();
// Reinstate the transaction if one was in progress
if(wasInTransaction) { begin_tft_write(); inTransaction = true; }
return color;
#endif
}
void TFT_eSPI::setCallback(getColorCallback getCol)
{
getColor = getCol;
}
/***************************************************************************************
** Function name: read rectangle (for SPI Interface II i.e. IM [3:0] = "1101")
** Description: Read 565 pixel colours from a defined area
***************************************************************************************/
void TFT_eSPI::readRect(int32_t x, int32_t y, int32_t w, int32_t h, uint16_t *data)
{
PI_CLIP ;
#if defined(TFT_PARALLEL_8_BIT) || defined(RP2040_PIO_INTERFACE)
CS_L;
readAddrWindow(x, y, dw, dh);
data += dx + dy * w;
// Set masked pins D0- D7 to input
busDir(dir_mask, INPUT);
#if defined (ILI9341_DRIVER) || defined(ILI9341_2_DRIVER) || defined (ILI9488_DRIVER) // Read 3 bytes
// Dummy read to throw away don't care value
readByte();
// Fetch the 24 bit RGB value
while (dh--) {
int32_t lw = dw;
uint16_t* line = data;
while (lw--) {
// Assemble the RGB 16 bit colour
uint16_t rgb = ((readByte() & 0xF8) << 8) | ((readByte() & 0xFC) << 3) | (readByte() >> 3);
// Swapped byte order for compatibility with pushRect()
*line++ = (rgb<<8) | (rgb>>8);
}
data += w;
}
#elif defined (SSD1963_DRIVER)
// Fetch the 18 bit BRG pixels
while (dh--) {
int32_t lw = dw;
uint16_t* line = data;
while (lw--) {
uint16_t bgr = ((readByte() & 0xF8) >> 3);; // CS_L adds a small delay
bgr |= ((readByte() & 0xFC) << 3);
bgr |= (readByte() << 8);
// Swap Red and Blue (could check MADCTL setting to see if this is needed)
uint16_t rgb = (bgr>>11) | (bgr<<11) | (bgr & 0x7E0);
// Swapped byte order for compatibility with pushRect()
*line++ = (rgb<<8) | (rgb>>8);
}
data += w;
}
#else // ILI9481 reads as 16 bits
// Dummy read to throw away don't care value
readByte();
// Fetch the 16 bit BRG pixels
while (dh--) {
int32_t lw = dw;
uint16_t* line = data;
while (lw--) {
#ifdef ILI9486_DRIVER
// Read the RGB 16 bit colour
*line++ = readByte() | (readByte() << 8);
#else
// Read the BRG 16 bit colour
uint16_t bgr = (readByte() << 8) | readByte();
// Swap Red and Blue (could check MADCTL setting to see if this is needed)
uint16_t rgb = (bgr>>11) | (bgr<<11) | (bgr & 0x7E0);
// Swapped byte order for compatibility with pushRect()
*line++ = (rgb<<8) | (rgb>>8);
#endif
}
data += w;
}
#endif
CS_H;
// Set masked pins D0- D7 to output
busDir(dir_mask, OUTPUT);
#else // SPI interface
// This function can get called after a begin_tft_write
// so a transaction may be in progress
bool wasInTransaction = inTransaction;
if (inTransaction) { inTransaction= false; end_tft_write();}
uint16_t color = 0;
begin_tft_read();
readAddrWindow(x, y, dw, dh);
data += dx + dy * w;
#ifdef TFT_SDA_READ
begin_SDA_Read();
#endif
// Dummy read to throw away don't care value
tft_Read_8();
// Read window pixel 24 bit RGB values
while (dh--) {
int32_t lw = dw;
uint16_t* line = data;
while (lw--) {
#if !defined (ILI9488_DRIVER)
#if defined (ST7796_DRIVER)
// Read the 2 bytes
color = ((tft_Read_8()) << 8) | (tft_Read_8());
#else
// Read the 3 RGB bytes, colour is actually only in the top 6 bits of each byte
// as the TFT stores colours as 18 bits
uint8_t r = tft_Read_8();
uint8_t g = tft_Read_8();
uint8_t b = tft_Read_8();
color = color565(r, g, b);
#endif
#else
// The 6 colour bits are in MS 6 bits of each byte but we do not include the extra clock pulse
// so we use a trick and mask the middle 6 bits of the byte, then only shift 1 place left
uint8_t r = (tft_Read_8()&0x7E)<<1;
uint8_t g = (tft_Read_8()&0x7E)<<1;
uint8_t b = (tft_Read_8()&0x7E)<<1;
color = color565(r, g, b);
#endif
// Swapped colour byte order for compatibility with pushRect()
*line++ = color << 8 | color >> 8;
}
data += w;
}
//CS_H;
#ifdef TFT_SDA_READ
end_SDA_Read();
#endif
end_tft_read();
// Reinstate the transaction if one was in progress
if(wasInTransaction) { begin_tft_write(); inTransaction = true; }
#endif
}
/***************************************************************************************
** Function name: push rectangle
** Description: push 565 pixel colours into a defined area
***************************************************************************************/
void TFT_eSPI::pushRect(int32_t x, int32_t y, int32_t w, int32_t h, uint16_t *data)
{
pushImage(x, y, w, h, data);
}
/***************************************************************************************
** Function name: pushImage
** Description: plot 16 bit colour sprite or image onto TFT
***************************************************************************************/
void TFT_eSPI::pushImage(int32_t x, int32_t y, int32_t w, int32_t h, const uint16_t *data)
{
PI_CLIP;
begin_tft_write();
inTransaction = true;
setWindow(x, y, x + dw - 1, y + dh - 1);
data += dx + dy * w;
// Check if whole image can be pushed
if (dw == w) pushPixels(data, dw * dh);
else {
// Push line segments to crop image
while (dh--)
{
pushPixels(data, dw);
data += w;
}
}
inTransaction = lockTransaction;
end_tft_write();
}
/***************************************************************************************
** Function name: pushImage
** Description: plot 16 bit sprite or image with 1 colour being transparent
***************************************************************************************/
void TFT_eSPI::pushImage(int32_t x, int32_t y, int32_t w, int32_t h, const uint16_t *data, uint16_t transp)
{
PI_CLIP;
begin_tft_write();
inTransaction = true;
data += dx + dy * w;
uint16_t lineBuf[dw]; // Use buffer to minimise setWindow call count
while (dh--)
{
int32_t len = dw;
const uint16_t* ptr = data;
int32_t px = x, sx = x;
bool move = true;
uint16_t np = 0;
while (len--)
{
if (transp != *ptr)
{
if (move) { move = false; sx = px; }
lineBuf[np] = *ptr;
np++;
}
else
{
move = true;
if (np)
{
setWindow(sx, y, sx + np - 1, y);
pushPixels((const uint16_t*)lineBuf, np);
np = 0;
}
}
px++;
ptr++;
}
if (np) { setWindow(sx, y, sx + np - 1, y); pushPixels((uint16_t*)lineBuf, np); }
y++;
data += w;
}
inTransaction = lockTransaction;
end_tft_write();
}
/***************************************************************************************
** Function name: read rectangle (for SPI Interface II i.e. IM [3:0] = "1101")
** Description: Read RGB pixel colours from a defined area
***************************************************************************************/
// If w and h are 1, then 1 pixel is read, *data array size must be 3 bytes per pixel
void TFT_eSPI::readRectRGB(int32_t x0, int32_t y0, int32_t w, int32_t h, uint8_t *data)
{
#if defined(TFT_PARALLEL_8_BIT) || defined(RP2040_PIO_INTERFACE)
uint32_t len = w * h;
uint8_t* buf565 = data + len;
readRect(x0, y0, w, h, (uint16_t*)buf565);
while (len--) {
uint16_t pixel565 = (*buf565++)<<8;
pixel565 |= *buf565++;
uint8_t red = (pixel565 & 0xF800) >> 8; red |= red >> 5;
uint8_t green = (pixel565 & 0x07E0) >> 3; green |= green >> 6;
uint8_t blue = (pixel565 & 0x001F) << 3; blue |= blue >> 5;
*data++ = red;
*data++ = green;
*data++ = blue;
}
#else // Not TFT_PARALLEL_8_BIT
begin_tft_read();
readAddrWindow(x0, y0, w, h); // Sets CS low
#ifdef TFT_SDA_READ
begin_SDA_Read();
#endif
// Dummy read to throw away don't care value
tft_Read_8();
// Read window pixel 24 bit RGB values, buffer must be set in sketch to 3 * w * h
uint32_t len = w * h;
while (len--) {
#if !defined (ILI9488_DRIVER)
// Read the 3 RGB bytes, colour is actually only in the top 6 bits of each byte
// as the TFT stores colours as 18 bits
*data++ = tft_Read_8();
*data++ = tft_Read_8();
*data++ = tft_Read_8();
#else
// The 6 colour bits are in MS 6 bits of each byte, but the ILI9488 needs an extra clock pulse
// so bits appear shifted right 1 bit, so mask the middle 6 bits then shift 1 place left
*data++ = (tft_Read_8()&0x7E)<<1;
*data++ = (tft_Read_8()&0x7E)<<1;
*data++ = (tft_Read_8()&0x7E)<<1;
#endif
}
CS_H;
#ifdef TFT_SDA_READ
end_SDA_Read();
#endif
end_tft_read();
#endif
}
/***************************************************************************************
** Function name: drawCircle
** Description: Draw a circle outline
***************************************************************************************/
// Optimised midpoint circle algorithm
void TFT_eSPI::drawCircle(int32_t x0, int32_t y0, int32_t r, uint32_t color)
{
if ( r <= 0 ) return;
//begin_tft_write(); // Sprite class can use this function, avoiding begin_tft_write()
inTransaction = true;
int32_t f = 1 - r;
int32_t ddF_y = -2 * r;
int32_t ddF_x = 1;
int32_t xs = -1;
int32_t xe = 0;
int32_t len = 0;
bool first = true;
do {
while (f < 0) {
++xe;
f += (ddF_x += 2);
}
f += (ddF_y += 2);
if (xe-xs>1) {
if (first) {
len = 2*(xe - xs)-1;
drawFastHLine(x0 - xe, y0 + r, len, color);
drawFastHLine(x0 - xe, y0 - r, len, color);
drawFastVLine(x0 + r, y0 - xe, len, color);
drawFastVLine(x0 - r, y0 - xe, len, color);
first = false;
}
else {
len = xe - xs++;
drawFastHLine(x0 - xe, y0 + r, len, color);
drawFastHLine(x0 - xe, y0 - r, len, color);
drawFastHLine(x0 + xs, y0 - r, len, color);
drawFastHLine(x0 + xs, y0 + r, len, color);
drawFastVLine(x0 + r, y0 + xs, len, color);
drawFastVLine(x0 + r, y0 - xe, len, color);
drawFastVLine(x0 - r, y0 - xe, len, color);
drawFastVLine(x0 - r, y0 + xs, len, color);
}
}
else {
++xs;
drawPixel(x0 - xe, y0 + r, color);
drawPixel(x0 - xe, y0 - r, color);
drawPixel(x0 + xs, y0 - r, color);
drawPixel(x0 + xs, y0 + r, color);
drawPixel(x0 + r, y0 + xs, color);
drawPixel(x0 + r, y0 - xe, color);
drawPixel(x0 - r, y0 - xe, color);
drawPixel(x0 - r, y0 + xs, color);
}
xs = xe;
} while (xe < --r);
inTransaction = lockTransaction;
end_tft_write(); // Does nothing if Sprite class uses this function
}
/***************************************************************************************
** Function name: drawCircleHelper
** Description: Support function for drawRoundRect()
***************************************************************************************/
void TFT_eSPI::drawCircleHelper( int32_t x0, int32_t y0, int32_t rr, uint8_t cornername, uint32_t color)
{
if (rr <= 0) return;
int32_t f = 1 - rr;
int32_t ddF_x = 1;
int32_t ddF_y = -2 * rr;
int32_t xe = 0;
int32_t xs = 0;
int32_t len = 0;
//begin_tft_write(); // Sprite class can use this function, avoiding begin_tft_write()
inTransaction = true;
while (xe < rr--)
{
while (f < 0) {
++xe;
f += (ddF_x += 2);
}
f += (ddF_y += 2);
if (xe-xs==1) {
if (cornername & 0x1) { // left top
drawPixel(x0 - xe, y0 - rr, color);
drawPixel(x0 - rr, y0 - xe, color);
}
if (cornername & 0x2) { // right top
drawPixel(x0 + rr , y0 - xe, color);
drawPixel(x0 + xs + 1, y0 - rr, color);
}
if (cornername & 0x4) { // right bottom
drawPixel(x0 + xs + 1, y0 + rr , color);
drawPixel(x0 + rr, y0 + xs + 1, color);
}
if (cornername & 0x8) { // left bottom
drawPixel(x0 - rr, y0 + xs + 1, color);
drawPixel(x0 - xe, y0 + rr , color);
}
}
else {
len = xe - xs++;
if (cornername & 0x1) { // left top
drawFastHLine(x0 - xe, y0 - rr, len, color);
drawFastVLine(x0 - rr, y0 - xe, len, color);
}
if (cornername & 0x2) { // right top
drawFastVLine(x0 + rr, y0 - xe, len, color);
drawFastHLine(x0 + xs, y0 - rr, len, color);
}
if (cornername & 0x4) { // right bottom
drawFastHLine(x0 + xs, y0 + rr, len, color);
drawFastVLine(x0 + rr, y0 + xs, len, color);
}
if (cornername & 0x8) { // left bottom
drawFastVLine(x0 - rr, y0 + xs, len, color);
drawFastHLine(x0 - xe, y0 + rr, len, color);
}
}
xs = xe;
}
inTransaction = lockTransaction;
end_tft_write(); // Does nothing if Sprite class uses this function
}
/***************************************************************************************
** Function name: fillCircle
** Description: draw a filled circle
***************************************************************************************/
// Optimised midpoint circle algorithm, changed to horizontal lines (faster in sprites)
// Improved algorithm avoids repetition of lines
void TFT_eSPI::fillCircle(int32_t x0, int32_t y0, int32_t r, uint32_t color)
{
int32_t x = 0;
int32_t dx = 1;
int32_t dy = r+r;
int32_t p = -(r>>1);
//begin_tft_write(); // Sprite class can use this function, avoiding begin_tft_write()
inTransaction = true;
drawFastHLine(x0 - r, y0, dy+1, color);
while(x<r){
if(p>=0) {
drawFastHLine(x0 - x, y0 + r, dx, color);
drawFastHLine(x0 - x, y0 - r, dx, color);
dy-=2;
p-=dy;
r--;
}
dx+=2;
p+=dx;
x++;
drawFastHLine(x0 - r, y0 + x, dy+1, color);
drawFastHLine(x0 - r, y0 - x, dy+1, color);
}
inTransaction = lockTransaction;
end_tft_write(); // Does nothing if Sprite class uses this function
}
/***************************************************************************************
** Function name: fillCircleHelper
** Description: Support function for fillRoundRect()
***************************************************************************************/
// Support drawing roundrects, changed to horizontal lines (faster in sprites)
void TFT_eSPI::fillCircleHelper(int32_t x0, int32_t y0, int32_t r, uint8_t cornername, int32_t delta, uint32_t color)
{
int32_t f = 1 - r;
int32_t ddF_x = 1;
int32_t ddF_y = -r - r;
int32_t y = 0;
delta++;
while (y < r) {
if (f >= 0) {
if (cornername & 0x1) drawFastHLine(x0 - y, y0 + r, y + y + delta, color);
if (cornername & 0x2) drawFastHLine(x0 - y, y0 - r, y + y + delta, color);
r--;
ddF_y += 2;
f += ddF_y;
}
y++;
ddF_x += 2;
f += ddF_x;
if (cornername & 0x1) drawFastHLine(x0 - r, y0 + y, r + r + delta, color);
if (cornername & 0x2) drawFastHLine(x0 - r, y0 - y, r + r + delta, color);
}
}
/***************************************************************************************
** Function name: drawEllipse
** Description: Draw a ellipse outline
***************************************************************************************/
void TFT_eSPI::drawEllipse(int16_t x0, int16_t y0, int32_t rx, int32_t ry, uint16_t color)
{
if (rx<2) return;
if (ry<2) return;
int32_t x, y;
int32_t rx2 = rx * rx;
int32_t ry2 = ry * ry;
int32_t fx2 = 4 * rx2;
int32_t fy2 = 4 * ry2;
int32_t s;
//begin_tft_write(); // Sprite class can use this function, avoiding begin_tft_write()
inTransaction = true;
for (x = 0, y = ry, s = 2*ry2+rx2*(1-2*ry); ry2*x <= rx2*y; x++) {
// These are ordered to minimise coordinate changes in x or y
// drawPixel can then send fewer bounding box commands
drawPixel(x0 + x, y0 + y, color);
drawPixel(x0 - x, y0 + y, color);
drawPixel(x0 - x, y0 - y, color);
drawPixel(x0 + x, y0 - y, color);
if (s >= 0) {
s += fx2 * (1 - y);
y--;
}
s += ry2 * ((4 * x) + 6);
}
for (x = rx, y = 0, s = 2*rx2+ry2*(1-2*rx); rx2*y <= ry2*x; y++) {
// These are ordered to minimise coordinate changes in x or y
// drawPixel can then send fewer bounding box commands
drawPixel(x0 + x, y0 + y, color);
drawPixel(x0 - x, y0 + y, color);
drawPixel(x0 - x, y0 - y, color);
drawPixel(x0 + x, y0 - y, color);
if (s >= 0)
{
s += fy2 * (1 - x);
x--;
}
s += rx2 * ((4 * y) + 6);
}
inTransaction = lockTransaction;
end_tft_write(); // Does nothing if Sprite class uses this function
}
/***************************************************************************************
** Function name: fillEllipse
** Description: draw a filled ellipse
***************************************************************************************/
void TFT_eSPI::fillEllipse(int16_t x0, int16_t y0, int32_t rx, int32_t ry, uint16_t color)
{
if (rx<2) return;
if (ry<2) return;
int32_t x, y;
int32_t rx2 = rx * rx;
int32_t ry2 = ry * ry;
int32_t fx2 = 4 * rx2;
int32_t fy2 = 4 * ry2;
int32_t s;
//begin_tft_write(); // Sprite class can use this function, avoiding begin_tft_write()
inTransaction = true;
for (x = 0, y = ry, s = 2*ry2+rx2*(1-2*ry); ry2*x <= rx2*y; x++) {
drawFastHLine(x0 - x, y0 - y, x + x + 1, color);
drawFastHLine(x0 - x, y0 + y, x + x + 1, color);
if (s >= 0) {
s += fx2 * (1 - y);
y--;
}
s += ry2 * ((4 * x) + 6);
}
for (x = rx, y = 0, s = 2*rx2+ry2*(1-2*rx); rx2*y <= ry2*x; y++) {
drawFastHLine(x0 - x, y0 - y, x + x + 1, color);
drawFastHLine(x0 - x, y0 + y, x + x + 1, color);
if (s >= 0) {
s += fy2 * (1 - x);
x--;
}
s += rx2 * ((4 * y) + 6);
}
inTransaction = lockTransaction;
end_tft_write(); // Does nothing if Sprite class uses this function
}
/***************************************************************************************
** Function name: fillScreen
** Description: Clear the screen to defined colour
***************************************************************************************/
void TFT_eSPI::fillScreen(uint32_t color)
{
fillRect(0, 0, _width, _height, color);
}
/***************************************************************************************
** Function name: drawRect
** Description: Draw a rectangle outline
***************************************************************************************/
// Draw a rectangle
void TFT_eSPI::drawRect(int32_t x, int32_t y, int32_t w, int32_t h, uint32_t color)
{
//begin_tft_write(); // Sprite class can use this function, avoiding begin_tft_write()
inTransaction = true;
drawFastHLine(x, y, w, color);
drawFastHLine(x, y + h - 1, w, color);
// Avoid drawing corner pixels twice
drawFastVLine(x, y+1, h-2, color);
drawFastVLine(x + w - 1, y+1, h-2, color);
inTransaction = lockTransaction;
end_tft_write(); // Does nothing if Sprite class uses this function
}
/***************************************************************************************
** Function name: drawRoundRect
** Description: Draw a rounded corner rectangle outline
***************************************************************************************/
// Draw a rounded rectangle
void TFT_eSPI::drawRoundRect(int32_t x, int32_t y, int32_t w, int32_t h, int32_t r, uint32_t color)
{
//begin_tft_write(); // Sprite class can use this function, avoiding begin_tft_write()
inTransaction = true;
// smarter version
drawFastHLine(x + r , y , w - r - r, color); // Top
drawFastHLine(x + r , y + h - 1, w - r - r, color); // Bottom
drawFastVLine(x , y + r , h - r - r, color); // Left
drawFastVLine(x + w - 1, y + r , h - r - r, color); // Right
// draw four corners
drawCircleHelper(x + r , y + r , r, 1, color);
drawCircleHelper(x + w - r - 1, y + r , r, 2, color);
drawCircleHelper(x + w - r - 1, y + h - r - 1, r, 4, color);
drawCircleHelper(x + r , y + h - r - 1, r, 8, color);
inTransaction = lockTransaction;
end_tft_write(); // Does nothing if Sprite class uses this function
}
/***************************************************************************************
** Function name: fillRoundRect
** Description: Draw a rounded corner filled rectangle
***************************************************************************************/
// Fill a rounded rectangle, changed to horizontal lines (faster in sprites)
void TFT_eSPI::fillRoundRect(int32_t x, int32_t y, int32_t w, int32_t h, int32_t r, uint32_t color)
{
//begin_tft_write(); // Sprite class can use this function, avoiding begin_tft_write()
inTransaction = true;
// smarter version
fillRect(x, y + r, w, h - r - r, color);
// draw four corners
fillCircleHelper(x + r, y + h - r - 1, r, 1, w - r - r - 1, color);
fillCircleHelper(x + r , y + r, r, 2, w - r - r - 1, color);
inTransaction = lockTransaction;
end_tft_write(); // Does nothing if Sprite class uses this function
}
void TFT_eSPI::drawSunkenRect(int32_t x, int32_t y, int32_t w, int32_t h, uint32_t color0, uint32_t color1, uint32_t color2)
{
//begin_tft_write(); // Sprite class can use this function, avoiding begin_tft_write()
inTransaction = true;
drawFastHLine(x, y, w, color0);
drawFastHLine(x, y + h - 1, w, color1);
// Avoid drawing corner pixels twice
drawFastVLine(x, y+1, h-2, color0);
drawFastVLine(x + w - 1, y+1, h-2, color1);
setWindow(x + 1, y + 1, x + w - 2, y + h - 2);
pushBlock(color2, (w - 2) * (h - 2));
inTransaction = false;
end_tft_write(); // Does nothing if Sprite class uses this function
}
/***************************************************************************************
** Function name: drawTriangle
** Description: Draw a triangle outline using 3 arbitrary points
***************************************************************************************/
// Draw a triangle
void TFT_eSPI::drawTriangle(int32_t x0, int32_t y0, int32_t x1, int32_t y1, int32_t x2, int32_t y2, uint32_t color)
{
//begin_tft_write(); // Sprite class can use this function, avoiding begin_tft_write()
inTransaction = true;
drawLine(x0, y0, x1, y1, color);
drawLine(x1, y1, x2, y2, color);
drawLine(x2, y2, x0, y0, color);
inTransaction = lockTransaction;
end_tft_write(); // Does nothing if Sprite class uses this function
}
/***************************************************************************************
** Function name: fillTriangle
** Description: Draw a filled triangle using 3 arbitrary points
***************************************************************************************/
// Fill a triangle - original Adafruit function works well and code footprint is small
void TFT_eSPI::fillTriangle ( int32_t x0, int32_t y0, int32_t x1, int32_t y1, int32_t x2, int32_t y2, uint32_t color)
{
int32_t a, b, y, last;
// Sort coordinates by Y order (y2 >= y1 >= y0)
if (y0 > y1) {
swap_coord(y0, y1); swap_coord(x0, x1);
}
if (y1 > y2) {
swap_coord(y2, y1); swap_coord(x2, x1);
}
if (y0 > y1) {
swap_coord(y0, y1); swap_coord(x0, x1);
}
if (y0 == y2) { // Handle awkward all-on-same-line case as its own thing
a = b = x0;
if (x1 < a) a = x1;
else if (x1 > b) b = x1;
if (x2 < a) a = x2;
else if (x2 > b) b = x2;
drawFastHLine(a, y0, b - a + 1, color);
return;
}
//begin_tft_write(); // Sprite class can use this function, avoiding begin_tft_write()
inTransaction = true;
int32_t
dx01 = x1 - x0,
dy01 = y1 - y0,
dx02 = x2 - x0,
dy02 = y2 - y0,
dx12 = x2 - x1,
dy12 = y2 - y1,
sa = 0,
sb = 0;
// For upper part of triangle, find scanline crossings for segments
// 0-1 and 0-2. If y1=y2 (flat-bottomed triangle), the scanline y1
// is included here (and second loop will be skipped, avoiding a /0
// error there), otherwise scanline y1 is skipped here and handled
// in the second loop...which also avoids a /0 error here if y0=y1
// (flat-topped triangle).
if (y1 == y2) last = y1; // Include y1 scanline
else last = y1 - 1; // Skip it
for (y = y0; y <= last; y++) {
a = x0 + sa / dy01;
b = x0 + sb / dy02;
sa += dx01;
sb += dx02;
if (a > b) swap_coord(a, b);
drawFastHLine(a, y, b - a + 1, color);
}
// For lower part of triangle, find scanline crossings for segments
// 0-2 and 1-2. This loop is skipped if y1=y2.
sa = dx12 * (y - y1);
sb = dx02 * (y - y0);
for (; y <= y2; y++) {
a = x1 + sa / dy12;
b = x0 + sb / dy02;
sa += dx12;
sb += dx02;
if (a > b) swap_coord(a, b);
drawFastHLine(a, y, b - a + 1, color);
}
inTransaction = lockTransaction;
end_tft_write(); // Does nothing if Sprite class uses this function
}
/***************************************************************************************
** Function name: drawBitmap
** Description: Draw an image stored in an array on the TFT
***************************************************************************************/
void TFT_eSPI::drawBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t color)
{
//begin_tft_write(); // Sprite class can use this function, avoiding begin_tft_write()
inTransaction = true;
int32_t i, j, byteWidth = (w + 7) / 8;
for (j = 0; j < h; j++) {
for (i = 0; i < w; i++ ) {
if (pgm_read_byte(bitmap + j * byteWidth + i / 8) & (128 >> (i & 7))) {
drawPixel(x + i, y + j, color);
}
}
}
inTransaction = lockTransaction;
end_tft_write(); // Does nothing if Sprite class uses this function
}
/***************************************************************************************
** Function name: drawBitmap
** Description: Draw an image stored in an array on the TFT
***************************************************************************************/
void TFT_eSPI::drawBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t fgcolor, uint16_t bgcolor)
{
//begin_tft_write(); // Sprite class can use this function, avoiding begin_tft_write()
inTransaction = true;
int32_t i, j, byteWidth = (w + 7) / 8;
for (j = 0; j < h; j++) {
for (i = 0; i < w; i++ ) {
if (pgm_read_byte(bitmap + j * byteWidth + i / 8) & (128 >> (i & 7)))
drawPixel(x + i, y + j, fgcolor);
else drawPixel(x + i, y + j, bgcolor);
}
}
inTransaction = lockTransaction;
end_tft_write(); // Does nothing if Sprite class uses this function
}
/***************************************************************************************
** Function name: drawXBitmap
** Description: Draw an image stored in an XBM array onto the TFT
***************************************************************************************/
void TFT_eSPI::drawXBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t color)
{
//begin_tft_write(); // Sprite class can use this function, avoiding begin_tft_write()
inTransaction = true;
int32_t i, j, byteWidth = (w + 7) / 8;
for (j = 0; j < h; j++) {
for (i = 0; i < w; i++ ) {
if (pgm_read_byte(bitmap + j * byteWidth + i / 8) & (1 << (i & 7))) {
drawPixel(x + i, y + j, color);
}
}
}
inTransaction = lockTransaction;
end_tft_write(); // Does nothing if Sprite class uses this function
}
/***************************************************************************************
** Function name: drawXBitmap
** Description: Draw an XBM image with foreground and background colors
***************************************************************************************/
void TFT_eSPI::drawXBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t color, uint16_t bgcolor)
{
//begin_tft_write(); // Sprite class can use this function, avoiding begin_tft_write()
inTransaction = true;
int32_t i, j, byteWidth = (w + 7) / 8;
for (j = 0; j < h; j++) {
for (i = 0; i < w; i++ ) {
if (pgm_read_byte(bitmap + j * byteWidth + i / 8) & (1 << (i & 7)))
drawPixel(x + i, y + j, color);
else drawPixel(x + i, y + j, bgcolor);
}
}
inTransaction = lockTransaction;
end_tft_write(); // Does nothing if Sprite class uses this function
}
/***************************************************************************************
** Function name: setPivot
** Description: Set the pivot point on the TFT
*************************************************************************************x*/
void TFT_eSPI::setPivot(int16_t x, int16_t y)
{
_xPivot = x;
_yPivot = y;
}
/***************************************************************************************
** Function name: getPivotX
** Description: Get the x pivot position
***************************************************************************************/
int16_t TFT_eSPI::getPivotX(void)
{
return _xPivot;
}
/***************************************************************************************
** Function name: getPivotY
** Description: Get the y pivot position
***************************************************************************************/
int16_t TFT_eSPI::getPivotY(void)
{
return _yPivot;
}
/***************************************************************************************
** Function name: getRotation
** Description: Return the rotation value (as used by setRotation())
***************************************************************************************/
uint8_t TFT_eSPI::getRotation(void) const
{
return rotation;
}
/***************************************************************************************
** Function name: width
** Description: Return the pixel width of display (per current rotation)
***************************************************************************************/
// Return the size of the display (per current rotation)
int16_t TFT_eSPI::width() const
{
if (_vpDatum) return _xWidth;
return _width;
}
/***************************************************************************************
** Function name: height
** Description: Return the pixel height of display (per current rotation)
***************************************************************************************/
int16_t TFT_eSPI::height() const
{
if (_vpDatum) return _yHeight;
return _height;
}
/***************************************************************************************
** Function name: setAddrWindow
** Description: define an area to receive a stream of pixels
***************************************************************************************/
// Chip select is high at the end of this function
void TFT_eSPI::setAddrWindow(int32_t x0, int32_t y0, int32_t w, int32_t h)
{
begin_tft_write();
setWindow(x0, y0, x0 + w - 1, y0 + h - 1);
end_tft_write();
}
/***************************************************************************************
** Function name: setWindow
** Description: define an area to receive a stream of pixels
***************************************************************************************/
// Chip select stays low, call begin_tft_write first. Use setAddrWindow() from sketches
void TFT_eSPI::setWindow(int32_t x0, int32_t y0, int32_t x1, int32_t y1)
{
//begin_tft_write(); // Must be called before setWindow
addr_row = 0xFFFF;
addr_col = 0xFFFF;
#if defined (ILI9225_DRIVER)
if (rotation & 0x01) { swap_coord(x0, y0); swap_coord(x1, y1); }
SPI_BUSY_CHECK;
DC_C; tft_Write_8(TFT_CASET1);
DC_D; tft_Write_16(x0);
DC_C; tft_Write_8(TFT_CASET2);
DC_D; tft_Write_16(x1);
DC_C; tft_Write_8(TFT_PASET1);
DC_D; tft_Write_16(y0);
DC_C; tft_Write_8(TFT_PASET2);
DC_D; tft_Write_16(y1);
DC_C; tft_Write_8(TFT_RAM_ADDR1);
DC_D; tft_Write_16(x0);
DC_C; tft_Write_8(TFT_RAM_ADDR2);
DC_D; tft_Write_16(y0);
// write to RAM
DC_C; tft_Write_8(TFT_RAMWR);
DC_D;
// Temporary solution is to include the RP2040 code here
#if (defined(ARDUINO_ARCH_RP2040) || defined (ARDUINO_ARCH_MBED)) && !defined(RP2040_PIO_INTERFACE)
// For ILI9225 and RP2040 the slower Arduino SPI transfer calls were used, so need to swap back to 16 bit mode
while (spi_get_hw(SPI_X)->sr & SPI_SSPSR_BSY_BITS) {};
hw_write_masked(&spi_get_hw(SPI_X)->cr0, (16 - 1) << SPI_SSPCR0_DSS_LSB, SPI_SSPCR0_DSS_BITS);
#endif
#elif defined (SSD1351_DRIVER)
if (rotation & 1) {
swap_coord(x0, y0);
swap_coord(x1, y1);
}
SPI_BUSY_CHECK;
DC_C; tft_Write_8(TFT_CASET);
DC_D; tft_Write_16(x1 | (x0 << 8));
DC_C; tft_Write_8(TFT_PASET);
DC_D; tft_Write_16(y1 | (y0 << 8));
DC_C; tft_Write_8(TFT_RAMWR);
DC_D;
#else
#if defined (SSD1963_DRIVER)
if ((rotation & 0x1) == 0) { swap_coord(x0, y0); swap_coord(x1, y1); }
#endif
#ifdef CGRAM_OFFSET
x0+=colstart;
x1+=colstart;
y0+=rowstart;
y1+=rowstart;
#endif
// Temporary solution is to include the RP2040 optimised code here
#if (defined(ARDUINO_ARCH_RP2040) || defined (ARDUINO_ARCH_MBED))
#if !defined(RP2040_PIO_INTERFACE)
// Use hardware SPI port, this code does not swap from 8 to 16 bit
// to avoid the spi_set_format() call overhead
while (spi_get_hw(SPI_X)->sr & SPI_SSPSR_BSY_BITS) {};
DC_C;
#if !defined (SPI_18BIT_DRIVER)
#if defined (RPI_DISPLAY_TYPE) // RPi TFT type always needs 16 bit transfers
hw_write_masked(&spi_get_hw(SPI_X)->cr0, (16 - 1) << SPI_SSPCR0_DSS_LSB, SPI_SSPCR0_DSS_BITS);
#else
hw_write_masked(&spi_get_hw(SPI_X)->cr0, (8 - 1) << SPI_SSPCR0_DSS_LSB, SPI_SSPCR0_DSS_BITS);
#endif
#endif
spi_get_hw(SPI_X)->dr = (uint32_t)TFT_CASET;
while (spi_get_hw(SPI_X)->sr & SPI_SSPSR_BSY_BITS) {};
DC_D;
spi_get_hw(SPI_X)->dr = (uint32_t)x0>>8;
spi_get_hw(SPI_X)->dr = (uint32_t)x0;
spi_get_hw(SPI_X)->dr = (uint32_t)x1>>8;
spi_get_hw(SPI_X)->dr = (uint32_t)x1;
while (spi_get_hw(SPI_X)->sr & SPI_SSPSR_BSY_BITS) {};
DC_C;
spi_get_hw(SPI_X)->dr = (uint32_t)TFT_PASET;
while (spi_get_hw(SPI_X)->sr & SPI_SSPSR_BSY_BITS) {};
DC_D;
spi_get_hw(SPI_X)->dr = (uint32_t)y0>>8;
spi_get_hw(SPI_X)->dr = (uint32_t)y0;
spi_get_hw(SPI_X)->dr = (uint32_t)y1>>8;
spi_get_hw(SPI_X)->dr = (uint32_t)y1;
while (spi_get_hw(SPI_X)->sr & SPI_SSPSR_BSY_BITS) {};
DC_C;
spi_get_hw(SPI_X)->dr = (uint32_t)TFT_RAMWR;
while (spi_get_hw(SPI_X)->sr & SPI_SSPSR_BSY_BITS) {};
#if !defined (SPI_18BIT_DRIVER)
hw_write_masked(&spi_get_hw(SPI_X)->cr0, (16 - 1) << SPI_SSPCR0_DSS_LSB, SPI_SSPCR0_DSS_BITS);
#endif
DC_D;
#else
// This is for the RP2040 and PIO interface (SPI or parallel)
WAIT_FOR_STALL;
tft_pio->sm[pio_sm].instr = pio_instr_addr;
TX_FIFO = TFT_CASET;
TX_FIFO = (x0<<16) | x1;
TX_FIFO = TFT_PASET;
TX_FIFO = (y0<<16) | y1;
TX_FIFO = TFT_RAMWR;
#endif
#else
SPI_BUSY_CHECK;
DC_C; tft_Write_8(TFT_CASET);
DC_D; tft_Write_32C(x0, x1);
DC_C; tft_Write_8(TFT_PASET);
DC_D; tft_Write_32C(y0, y1);
DC_C; tft_Write_8(TFT_RAMWR);
DC_D;
#endif // RP2040 SPI
#endif
//end_tft_write(); // Must be called after setWindow
}
/***************************************************************************************
** Function name: readAddrWindow
** Description: define an area to read a stream of pixels
***************************************************************************************/
void TFT_eSPI::readAddrWindow(int32_t xs, int32_t ys, int32_t w, int32_t h)
{
//begin_tft_write(); // Must be called before readAddrWindow or CS set low
int32_t xe = xs + w - 1;
int32_t ye = ys + h - 1;
addr_col = 0xFFFF;
addr_row = 0xFFFF;
#if defined (SSD1963_DRIVER)
if ((rotation & 0x1) == 0) { swap_coord(xs, ys); swap_coord(xe, ye); }
#endif
#ifdef CGRAM_OFFSET
xs += colstart;
xe += colstart;
ys += rowstart;
ye += rowstart;
#endif
// Temporary solution is to include the RP2040 optimised code here
#if (defined(ARDUINO_ARCH_RP2040) || defined (ARDUINO_ARCH_MBED)) && !defined(RP2040_PIO_INTERFACE)
// Use hardware SPI port, this code does not swap from 8 to 16 bit
// to avoid the spi_set_format() call overhead
while (spi_get_hw(SPI_X)->sr & SPI_SSPSR_BSY_BITS) {};
DC_C;
hw_write_masked(&spi_get_hw(SPI_X)->cr0, (8 - 1) << SPI_SSPCR0_DSS_LSB, SPI_SSPCR0_DSS_BITS);
spi_get_hw(SPI_X)->dr = (uint32_t)TFT_CASET;
while (spi_get_hw(SPI_X)->sr & SPI_SSPSR_BSY_BITS) {};
DC_D;
spi_get_hw(SPI_X)->dr = (uint32_t)xs>>8;
spi_get_hw(SPI_X)->dr = (uint32_t)xs;
spi_get_hw(SPI_X)->dr = (uint32_t)xe>>8;
spi_get_hw(SPI_X)->dr = (uint32_t)xe;
while (spi_get_hw(SPI_X)->sr & SPI_SSPSR_BSY_BITS) {};
DC_C;
spi_get_hw(SPI_X)->dr = (uint32_t)TFT_PASET;
while (spi_get_hw(SPI_X)->sr & SPI_SSPSR_BSY_BITS) {};
DC_D;
spi_get_hw(SPI_X)->dr = (uint32_t)ys>>8;
spi_get_hw(SPI_X)->dr = (uint32_t)ys;
spi_get_hw(SPI_X)->dr = (uint32_t)ye>>8;
spi_get_hw(SPI_X)->dr = (uint32_t)ye;
while (spi_get_hw(SPI_X)->sr & SPI_SSPSR_BSY_BITS) {};
DC_C;
spi_get_hw(SPI_X)->dr = (uint32_t)TFT_RAMRD;
while (spi_get_hw(SPI_X)->sr & SPI_SSPSR_BSY_BITS) {};
DC_D;
// Flush the rx buffer and reset overflow flag
while (spi_is_readable(SPI_X)) (void)spi_get_hw(SPI_X)->dr;
spi_get_hw(SPI_X)->icr = SPI_SSPICR_RORIC_BITS;
#else
// Column addr set
DC_C; tft_Write_8(TFT_CASET);
DC_D; tft_Write_32C(xs, xe);
// Row addr set
DC_C; tft_Write_8(TFT_PASET);
DC_D; tft_Write_32C(ys, ye);
// Read CGRAM command
DC_C; tft_Write_8(TFT_RAMRD);
DC_D;
#endif // RP2040 SPI
//end_tft_write(); // Must be called after readAddrWindow or CS set high
}
/***************************************************************************************
** Function name: drawPixel
** Description: push a single pixel at an arbitrary position
***************************************************************************************/
void TFT_eSPI::drawPixel(int32_t x, int32_t y, uint16_t color)
{
if (_vpOoB) return;
x+= _xDatum;
y+= _yDatum;
// Range checking
if ((x < _vpX) || (y < _vpY) ||(x >= _vpW) || (y >= _vpH)) return;
#ifdef CGRAM_OFFSET
x+=colstart;
y+=rowstart;
#endif
#if (defined (MULTI_TFT_SUPPORT) || defined (GC9A01_DRIVER)) && !defined (ILI9225_DRIVER)
addr_row = 0xFFFF;
addr_col = 0xFFFF;
#endif
begin_tft_write();
#if defined (ILI9225_DRIVER)
if (rotation & 0x01) { swap_coord(x, y); }
SPI_BUSY_CHECK;
// Set window to full screen to optimise sequential pixel rendering
if (addr_row != 0x9225) {
addr_row = 0x9225; // addr_row used for flag
DC_C; tft_Write_8(TFT_CASET1);
DC_D; tft_Write_16(0);
DC_C; tft_Write_8(TFT_CASET2);
DC_D; tft_Write_16(175);
DC_C; tft_Write_8(TFT_PASET1);
DC_D; tft_Write_16(0);
DC_C; tft_Write_8(TFT_PASET2);
DC_D; tft_Write_16(219);
}
// Define pixel coordinate
DC_C; tft_Write_8(TFT_RAM_ADDR1);
DC_D; tft_Write_16(x);
DC_C; tft_Write_8(TFT_RAM_ADDR2);
DC_D; tft_Write_16(y);
// write to RAM
DC_C; tft_Write_8(TFT_RAMWR);
#if defined(TFT_PARALLEL_8_BIT) || defined(TFT_PARALLEL_16_BIT) || !defined(ESP32)
DC_D; tft_Write_16(color);
#else
DC_D; tft_Write_16N(color);
#endif
// Temporary solution is to include the RP2040 optimised code here
#elif (defined (ARDUINO_ARCH_RP2040) || defined (ARDUINO_ARCH_MBED)) && !defined (SSD1351_DRIVER)
#if defined (SSD1963_DRIVER)
if ((rotation & 0x1) == 0) { swap_coord(x, y); }
#endif
#if !defined(RP2040_PIO_INTERFACE)
while (spi_get_hw(SPI_X)->sr & SPI_SSPSR_BSY_BITS) {};
#if defined (RPI_DISPLAY_TYPE) // RPi TFT type always needs 16 bit transfers
hw_write_masked(&spi_get_hw(SPI_X)->cr0, (16 - 1) << SPI_SSPCR0_DSS_LSB, SPI_SSPCR0_DSS_BITS);
#else
hw_write_masked(&spi_get_hw(SPI_X)->cr0, (8 - 1) << SPI_SSPCR0_DSS_LSB, SPI_SSPCR0_DSS_BITS);
#endif
if (addr_col != x) {
DC_C;
spi_get_hw(SPI_X)->dr = (uint32_t)TFT_CASET;
while (spi_get_hw(SPI_X)->sr & SPI_SSPSR_BSY_BITS){};
DC_D;
spi_get_hw(SPI_X)->dr = (uint32_t)x>>8;
spi_get_hw(SPI_X)->dr = (uint32_t)x;
spi_get_hw(SPI_X)->dr = (uint32_t)x>>8;
spi_get_hw(SPI_X)->dr = (uint32_t)x;
addr_col = x;
while (spi_get_hw(SPI_X)->sr & SPI_SSPSR_BSY_BITS) {};
}
if (addr_row != y) {
DC_C;
spi_get_hw(SPI_X)->dr = (uint32_t)TFT_PASET;
while (spi_get_hw(SPI_X)->sr & SPI_SSPSR_BSY_BITS) {};
DC_D;
spi_get_hw(SPI_X)->dr = (uint32_t)y>>8;
spi_get_hw(SPI_X)->dr = (uint32_t)y;
spi_get_hw(SPI_X)->dr = (uint32_t)y>>8;
spi_get_hw(SPI_X)->dr = (uint32_t)y;
addr_row = y;
while (spi_get_hw(SPI_X)->sr & SPI_SSPSR_BSY_BITS) {};
}
DC_C;
spi_get_hw(SPI_X)->dr = (uint32_t)TFT_RAMWR;
#if defined (SPI_18BIT_DRIVER) // SPI 18 bit colour
uint8_t r = (color & 0xF800)>>8;
uint8_t g = (color & 0x07E0)>>3;
uint8_t b = (color & 0x001F)<<3;
while (spi_get_hw(SPI_X)->sr & SPI_SSPSR_BSY_BITS) {};
DC_D;
tft_Write_8N(r); tft_Write_8N(g); tft_Write_8N(b);
#else
while (spi_get_hw(SPI_X)->sr & SPI_SSPSR_BSY_BITS) {};
DC_D;
#if defined (RPI_DISPLAY_TYPE) // RPi TFT type always needs 16 bit transfers
spi_get_hw(SPI_X)->dr = (uint32_t)color;
#else
spi_get_hw(SPI_X)->dr = (uint32_t)color>>8;
spi_get_hw(SPI_X)->dr = (uint32_t)color;
#endif
#endif
while (spi_get_hw(SPI_X)->sr & SPI_SSPSR_BSY_BITS) {};
#else
// This is for the RP2040 and PIO interface (SPI or parallel)
WAIT_FOR_STALL;
tft_pio->sm[pio_sm].instr = pio_instr_addr;
TX_FIFO = TFT_CASET;
TX_FIFO = (x<<16) | x;
TX_FIFO = TFT_PASET;
TX_FIFO = (y<<16) | y;
TX_FIFO = TFT_RAMWR;
//DC set high by PIO
#if defined (SPI_18BIT_DRIVER)
TX_FIFO = ((color & 0xF800)<<8) | ((color & 0x07E0)<<5) | ((color & 0x001F)<<3);
#else
TX_FIFO = color;
#endif
#endif
#else
#if defined (SSD1963_DRIVER)
if ((rotation & 0x1) == 0) { swap_coord(x, y); }
#endif
SPI_BUSY_CHECK;
#if defined (SSD1351_DRIVER)
if (rotation & 0x1) { swap_coord(x, y); }
// No need to send x if it has not changed (speeds things up)
if (addr_col != x) {
DC_C; tft_Write_8(TFT_CASET);
DC_D; tft_Write_16(x | (x << 8));
addr_col = x;
}
// No need to send y if it has not changed (speeds things up)
if (addr_row != y) {
DC_C; tft_Write_8(TFT_PASET);
DC_D; tft_Write_16(y | (y << 8));
addr_row = y;
}
#else
// No need to send x if it has not changed (speeds things up)
if (addr_col != x) {
DC_C; tft_Write_8(TFT_CASET);
DC_D; tft_Write_32D(x);
addr_col = x;
}
// No need to send y if it has not changed (speeds things up)
if (addr_row != y) {
DC_C; tft_Write_8(TFT_PASET);
DC_D; tft_Write_32D(y);
addr_row = y;
}
#endif
DC_C; tft_Write_8(TFT_RAMWR);
#if defined(TFT_PARALLEL_8_BIT) || defined(TFT_PARALLEL_16_BIT) || !defined(ESP32)
DC_D; tft_Write_16(color);
#else
DC_D; tft_Write_16N(color);
#endif
#endif
end_tft_write();
}
/***************************************************************************************
** Function name: pushColor
** Description: push a single pixel
***************************************************************************************/
void TFT_eSPI::pushColor(uint16_t color)
{
begin_tft_write();
SPI_BUSY_CHECK;
tft_Write_16N(color);
end_tft_write();
}
/***************************************************************************************
** Function name: pushColor
** Description: push a single colour to "len" pixels
***************************************************************************************/
void TFT_eSPI::pushColor(uint16_t color, uint32_t len)
{
begin_tft_write();
pushBlock(color, len);
end_tft_write();
}
/***************************************************************************************
** Function name: startWrite
** Description: begin transaction with CS low, MUST later call endWrite
***************************************************************************************/
void TFT_eSPI::startWrite(void)
{
begin_tft_write();
lockTransaction = true; // Lock transaction for all sequentially run sketch functions
inTransaction = true;
}
/***************************************************************************************
** Function name: endWrite
** Description: end transaction with CS high
***************************************************************************************/
void TFT_eSPI::endWrite(void)
{
lockTransaction = false; // Release sketch induced transaction lock
inTransaction = false;
DMA_BUSY_CHECK; // Safety check - user code should have checked this!
end_tft_write(); // Release SPI bus
}
/***************************************************************************************
** Function name: writeColor (use startWrite() and endWrite() before & after)
** Description: raw write of "len" pixels avoiding transaction check
***************************************************************************************/
void TFT_eSPI::writeColor(uint16_t color, uint32_t len)
{
pushBlock(color, len);
}
/***************************************************************************************
** Function name: pushColors
** Description: push an array of pixels for 16 bit raw image drawing
***************************************************************************************/
// Assumed that setAddrWindow() has previously been called
// len is number of bytes, not pixels
void TFT_eSPI::pushColors(uint8_t *data, uint32_t len)
{
begin_tft_write();
pushPixels(data, len>>1);
end_tft_write();
}
/***************************************************************************************
** Function name: pushColors
** Description: push an array of pixels, for image drawing
***************************************************************************************/
void TFT_eSPI::pushColors(uint16_t *data, uint32_t len)
{
begin_tft_write();
pushPixels(data, len);
end_tft_write();
}
/***************************************************************************************
** Function name: drawLine
** Description: draw a line between 2 arbitrary points
***************************************************************************************/
// Bresenham's algorithm - thx wikipedia - speed enhanced by Bodmer to use
// an efficient FastH/V Line draw routine for line segments of 2 pixels or more
void TFT_eSPI::drawLine(int32_t x0, int32_t y0, int32_t x1, int32_t y1, uint16_t color)
{
if (_vpOoB) return;
//begin_tft_write(); // Sprite class can use this function, avoiding begin_tft_write()
inTransaction = true;
//x+= _xDatum; // Not added here, added by drawPixel & drawFastXLine
//y+= _yDatum;
bool steep = abs(y1 - y0) > abs(x1 - x0);
if (steep) {
swap_coord(x0, y0);
swap_coord(x1, y1);
}
if (x0 > x1) {
swap_coord(x0, x1);
swap_coord(y0, y1);
}
int32_t dx = x1 - x0, dy = abs(y1 - y0);;
int32_t err = dx >> 1, ystep = -1, xs = x0, dlen = 0;
if (y0 < y1) ystep = 1;
// Split into steep and not steep for FastH/V separation
if (steep) {
for (; x0 <= x1; x0++) {
dlen++;
err -= dy;
if (err < 0) {
if (dlen == 1) drawPixel(y0, xs, color);
else drawFastVLine(y0, xs, dlen, color);
dlen = 0;
y0 += ystep; xs = x0 + 1;
err += dx;
}
}
if (dlen) drawFastVLine(y0, xs, dlen, color);
}
else
{
for (; x0 <= x1; x0++) {
dlen++;
err -= dy;
if (err < 0) {
if (dlen == 1) drawPixel(xs, y0, color);
else drawFastHLine(xs, y0, dlen, color);
dlen = 0;
y0 += ystep; xs = x0 + 1;
err += dx;
}
}
if (dlen) drawFastHLine(xs, y0, dlen, color);
}
inTransaction = lockTransaction;
end_tft_write();
}
/***************************************************************************************
** Description: Constants for anti-aliased line drawing on TFT and in Sprites
***************************************************************************************/
constexpr float PixelAlphaGain = 255.0;
constexpr float LoAlphaTheshold = 1.0/32.0;
constexpr float HiAlphaTheshold = 1.0 - LoAlphaTheshold;
/***************************************************************************************
** Function name: drawPixel (aplha blended)
** Description: Draw a pixel blended with the screen or bg pixel colour
***************************************************************************************/
uint16_t TFT_eSPI::drawPixel(int32_t x, int32_t y, uint32_t color, uint8_t alpha, uint32_t bg_color)
{
if (bg_color == 0x00FFFFFF) bg_color = readPixel(x, y);
color = alphaBlend(alpha, color, bg_color);
drawPixel(x, y, color);
return color;
}
/***************************************************************************************
** Function name: fillSmoothCircle
** Description: Draw a filled anti-aliased circle
***************************************************************************************/
void TFT_eSPI::fillSmoothCircle(int32_t x, int32_t y, int32_t r, uint32_t color, uint32_t bg_color)
{
if (r <= 0) return;
inTransaction = true;
drawFastHLine(x - r, y, 2 * r + 1, color);
int32_t xs = 1;
int32_t cx = 0;
int32_t r1 = r * r;
r++;
int32_t r2 = r * r;
for (int32_t cy = r - 1; cy > 0; cy--)
{
int32_t dy2 = (r - cy) * (r - cy);
for (cx = xs; cx < r; cx++)
{
int32_t hyp2 = (r - cx) * (r - cx) + dy2;
if (hyp2 <= r1) break;
if (hyp2 >= r2) continue;
float alphaf = (float)r - sqrtf(hyp2);
if (alphaf > HiAlphaTheshold) break;
xs = cx;
if (alphaf < LoAlphaTheshold) continue;
uint8_t alpha = alphaf * 255;
if (bg_color == 0x00FFFFFF) {
drawPixel(x + cx - r, y + cy - r, color, alpha, bg_color);
drawPixel(x - cx + r, y + cy - r, color, alpha, bg_color);
drawPixel(x - cx + r, y - cy + r, color, alpha, bg_color);
drawPixel(x + cx - r, y - cy + r, color, alpha, bg_color);
}
else {
uint16_t pcol = drawPixel(x + cx - r, y + cy - r, color, alpha, bg_color);
drawPixel(x - cx + r, y + cy - r, pcol);
drawPixel(x - cx + r, y - cy + r, pcol);
drawPixel(x + cx - r, y - cy + r, pcol);
}
}
drawFastHLine(x + cx - r, y + cy - r, 2 * (r - cx) + 1, color);
drawFastHLine(x + cx - r, y - cy + r, 2 * (r - cx) + 1, color);
}
inTransaction = lockTransaction;
end_tft_write();
}
/***************************************************************************************
** Function name: fillSmoothRoundRect
** Description: Draw a filled anti-aliased rounded corner rectangle
***************************************************************************************/
void TFT_eSPI::fillSmoothRoundRect(int32_t x, int32_t y, int32_t w, int32_t h, int32_t r, uint32_t color, uint32_t bg_color)
{
inTransaction = true;
int32_t xs = 0;
int32_t cx = 0;
// Limit radius to half width or height
if (r > w/2) r = w/2;
if (r > h/2) r = h/2;
y += r;
h -= 2*r;
fillRect(x, y, w, h, color);
h--;
x += r;
w -= 2*r+1;
int32_t r1 = r * r;
r++;
int32_t r2 = r * r;
for (int32_t cy = r - 1; cy > 0; cy--)
{
int32_t dy2 = (r - cy) * (r - cy);
for (cx = xs; cx < r; cx++)
{
int32_t hyp2 = (r - cx) * (r - cx) + dy2;
if (hyp2 <= r1) break;
if (hyp2 >= r2) continue;
float alphaf = (float)r - sqrtf(hyp2);
if (alphaf > HiAlphaTheshold) break;
xs = cx;
if (alphaf < LoAlphaTheshold) continue;
uint8_t alpha = alphaf * 255;
drawPixel(x + cx - r, y + cy - r, color, alpha, bg_color);
drawPixel(x - cx + r + w, y + cy - r, color, alpha, bg_color);
drawPixel(x - cx + r + w, y - cy + r + h, color, alpha, bg_color);
drawPixel(x + cx - r, y - cy + r + h, color, alpha, bg_color);
}
drawFastHLine(x + cx - r, y + cy - r, 2 * (r - cx) + 1 + w, color);
drawFastHLine(x + cx - r, y - cy + r + h, 2 * (r - cx) + 1 + w, color);
}
inTransaction = lockTransaction;
end_tft_write();
}
/***************************************************************************************
** Function name: drawSpot - maths intensive, so for small filled circles
** Description: Draw an anti-aliased filled circle at ax,ay with radius r
***************************************************************************************/
void TFT_eSPI::drawSpot(float ax, float ay, float r, uint32_t fg_color, uint32_t bg_color)
{
// Filled circle can be created by the wide line function with zero line length
drawWedgeLine( ax, ay, ax, ay, r, r, fg_color, bg_color);
}
/***************************************************************************************
** Function name: drawWideLine - background colour specified or pixel read
** Description: draw an anti-aliased line with rounded ends, width wd
***************************************************************************************/
void TFT_eSPI::drawWideLine(float ax, float ay, float bx, float by, float wd, uint32_t fg_color, uint32_t bg_color)
{
drawWedgeLine( ax, ay, bx, by, wd/2.0, wd/2.0, fg_color, bg_color);
}
/***************************************************************************************
** Function name: drawWedgeLine
** Description: draw an anti-aliased line with different width radiused ends
***************************************************************************************/
void TFT_eSPI::drawWedgeLine(float ax, float ay, float bx, float by, float ar, float br, uint32_t fg_color, uint32_t bg_color)
{
if ( (abs(ax - bx) < 0.01f) && (abs(ay - by) < 0.01f) ) bx += 0.01f; // Avoid divide by zero
// Find line bounding box
int32_t x0 = (int32_t)floorf(fminf(ax-ar, bx-br));
int32_t x1 = (int32_t) ceilf(fmaxf(ax+ar, bx+br));
int32_t y0 = (int32_t)floorf(fminf(ay-ar, by-br));
int32_t y1 = (int32_t) ceilf(fmaxf(ay+ar, by+br));
if (!clipWindow(&x0, &y0, &x1, &y1)) return;
// Establish x start and y start
int32_t ys = ay;
if ((ax-ar)>(bx-br)) ys = by;
float rdt = ar - br; // Radius delta
float alpha = 1.0f;
ar += 0.5;
uint16_t bg = bg_color;
float xpax, ypay, bax = bx - ax, bay = by - ay;
begin_nin_write();
inTransaction = true;
int32_t xs = x0;
// Scan bounding box from ys down, calculate pixel intensity from distance to line
for (int32_t yp = ys; yp <= y1; yp++) {
bool swin = true; // Flag to start new window area
bool endX = false; // Flag to skip pixels
ypay = yp - ay;
for (int32_t xp = xs; xp <= x1; xp++) {
if (endX) if (alpha <= LoAlphaTheshold) break; // Skip right side
xpax = xp - ax;
alpha = ar - wedgeLineDistance(xpax, ypay, bax, bay, rdt);
if (alpha <= LoAlphaTheshold ) continue;
// Track edge to minimise calculations
if (!endX) { endX = true; xs = xp; }
if (alpha > HiAlphaTheshold) {
if (swin) { setWindow(xp, yp, width()-1, yp); swin = false; }
pushColor(fg_color);
continue;
}
//Blend color with background and plot
if (bg_color == 0x00FFFFFF) {
bg = readPixel(xp, yp); swin = true;
}
if (swin) { setWindow(xp, yp, width()-1, yp); swin = false; }
pushColor(alphaBlend((uint8_t)(alpha * PixelAlphaGain), fg_color, bg));
}
}
// Reset x start to left side of box
xs = x0;
// Scan bounding box from ys-1 up, calculate pixel intensity from distance to line
for (int32_t yp = ys-1; yp >= y0; yp--) {
bool swin = true; // Flag to start new window area
bool endX = false; // Flag to skip pixels
ypay = yp - ay;
for (int32_t xp = xs; xp <= x1; xp++) {
if (endX) if (alpha <= LoAlphaTheshold) break; // Skip right side of drawn line
xpax = xp - ax;
alpha = ar - wedgeLineDistance(xpax, ypay, bax, bay, rdt);
if (alpha <= LoAlphaTheshold ) continue;
// Track line boundary
if (!endX) { endX = true; xs = xp; }
if (alpha > HiAlphaTheshold) {
if (swin) { setWindow(xp, yp, width()-1, yp); swin = false; }
pushColor(fg_color);
continue;
}
//Blend color with background and plot
if (bg_color == 0x00FFFFFF) {
bg = readPixel(xp, yp); swin = true;
}
if (swin) { setWindow(xp, yp, width()-1, yp); swin = false; }
pushColor(alphaBlend((uint8_t)(alpha * PixelAlphaGain), fg_color, bg));
}
}
inTransaction = lockTransaction;
end_nin_write();
}
// Calculate distance of px,py to closest part of line
/***************************************************************************************
** Function name: lineDistance - private helper function for drawWedgeLine
** Description: returns distance of px,py to closest part of a to b wedge
***************************************************************************************/
inline float TFT_eSPI::wedgeLineDistance(float xpax, float ypay, float bax, float bay, float dr)
{
float h = fmaxf(fminf((xpax * bax + ypay * bay) / (bax * bax + bay * bay), 1.0f), 0.0f);
float dx = xpax - bax * h, dy = ypay - bay * h;
return sqrtf(dx * dx + dy * dy) + h * dr;
}
/***************************************************************************************
** Function name: drawFastVLine
** Description: draw a vertical line
***************************************************************************************/
void TFT_eSPI::drawFastVLine(int32_t x, int32_t y, int32_t h, uint16_t color)
{
if (_vpOoB) return;
x+= _xDatum;
y+= _yDatum;
// Clipping
if ((x < _vpX) || (x >= _vpW) || (y >= _vpH)) return;
if (y < _vpY) { h += y - _vpY; y = _vpY; }
if ((y + h) > _vpH) h = _vpH - y;
if (h < 1) return;
begin_tft_write();
setWindow(x, y, x, y + h - 1);
pushBlock(color, h);
end_tft_write();
}
/***************************************************************************************
** Function name: drawFastHLine
** Description: draw a horizontal line
***************************************************************************************/
void TFT_eSPI::drawFastHLine(int32_t x, int32_t y, int32_t w, uint16_t color)
{
if (_vpOoB) return;
x+= _xDatum;
y+= _yDatum;
// Clipping
if ((y < _vpY) || (x >= _vpW) || (y >= _vpH)) return;
if (x < _vpX) { w += x - _vpX; x = _vpX; }
if ((x + w) > _vpW) w = _vpW - x;
if (w < 1) return;
begin_tft_write();
setWindow(x, y, x + w - 1, y);
pushBlock(color, w);
end_tft_write();
}
/***************************************************************************************
** Function name: fillRect
** Description: draw a filled rectangle
***************************************************************************************/
void TFT_eSPI::fillRect(int32_t x, int32_t y, int32_t w, int32_t h, uint16_t color)
{
if (_vpOoB) return;
x+= _xDatum;
y+= _yDatum;
// Clipping
if ((x >= _vpW) || (y >= _vpH)) return;
if (x < _vpX) { w += x - _vpX; x = _vpX; }
if (y < _vpY) { h += y - _vpY; y = _vpY; }
if ((x + w) > _vpW) w = _vpW - x;
if ((y + h) > _vpH) h = _vpH - y;
if ((w < 1) || (h < 1)) return;
//Serial.print(" _xDatum=");Serial.print( _xDatum);Serial.print(", _yDatum=");Serial.print( _yDatum);
//Serial.print(", _xWidth=");Serial.print(_xWidth);Serial.print(", _yHeight=");Serial.println(_yHeight);
//Serial.print(" _vpX=");Serial.print( _vpX);Serial.print(", _vpY=");Serial.print( _vpY);
//Serial.print(", _vpW=");Serial.print(_vpW);Serial.print(", _vpH=");Serial.println(_vpH);
//Serial.print(" x=");Serial.print( y);Serial.print(", y=");Serial.print( y);
//Serial.print(", w=");Serial.print(w);Serial.print(", h=");Serial.println(h);
begin_tft_write();
setWindow(x, y, x + w - 1, y + h - 1);
pushBlock(color, w * h);
end_tft_write();
}
/***************************************************************************************
** Function name: fillRectVGradient
** Description: draw a filled rectangle with a vertical colour gradient
***************************************************************************************/
void TFT_eSPI::fillRectVGradient(int16_t x, int16_t y, int16_t w, int16_t h, uint32_t color1, uint32_t color2)
{
if (_vpOoB) return;
x+= _xDatum;
y+= _yDatum;
// Clipping
if ((x >= _vpW) || (y >= _vpH)) return;
if (x < _vpX) { w += x - _vpX; x = _vpX; }
if (y < _vpY) { h += y - _vpY; y = _vpY; }
if ((x + w) > _vpW) w = _vpW - x;
if ((y + h) > _vpH) h = _vpH - y;
if ((w < 1) || (h < 1)) return;
begin_tft_write();
setWindow(x, y, x + w - 1, y + h - 1);
float delta = -255.0/h;
float alpha = 255.0;
uint32_t color = color1;
while (h--) {
pushBlock(color, w);
alpha += delta;
color = alphaBlend((uint8_t)alpha, color1, color2);
}
end_tft_write();
}
/***************************************************************************************
** Function name: fillRectHGradient
** Description: draw a filled rectangle with a horizontal colour gradient
***************************************************************************************/
void TFT_eSPI::fillRectHGradient(int16_t x, int16_t y, int16_t w, int16_t h, uint32_t color1, uint32_t color2)
{
if (_vpOoB) return;
x+= _xDatum;
y+= _yDatum;
// Clipping
if ((x >= _vpW) || (y >= _vpH)) return;
if (x < _vpX) { w += x - _vpX; x = _vpX; }
if (y < _vpY) { h += y - _vpY; y = _vpY; }
if ((x + w) > _vpW) w = _vpW - x;
if ((y + h) > _vpH) h = _vpH - y;
if ((w < 1) || (h < 1)) return;
begin_tft_write();
float delta = -255.0/w;
float alpha = 255.0;
uint32_t color = color1;
while (w--) {
drawFastVLine(x++, y, h, color);
alpha += delta;
color = alphaBlend((uint8_t)alpha, color1, color2);
}
end_tft_write();
}
/***************************************************************************************
** Function name: color8to16
** Description: convert 8 bit colour to a 16 bit 565 colour value
***************************************************************************************/
uint16_t TFT_eSPI::color8to16(uint8_t color)
{
uint8_t blue[] = {0, 11, 21, 31}; // blue 2 to 5 bit colour lookup table
uint16_t color16 = 0;
// =====Green===== ===============Red==============
color16 = (color & 0x1C)<<6 | (color & 0xC0)<<5 | (color & 0xE0)<<8;
// =====Green===== =======Blue======
color16 |= (color & 0x1C)<<3 | blue[color & 0x03];
return color16;
}
/***************************************************************************************
** Function name: color16to24
** Description: convert 16 bit colour to a 24 bit 888 colour value
***************************************************************************************/
uint32_t TFT_eSPI::color16to24(uint16_t color565)
{
uint8_t r = (color565 >> 8) & 0xF8; r |= (r >> 5);
uint8_t g = (color565 >> 3) & 0xFC; g |= (g >> 6);
uint8_t b = (color565 << 3) & 0xF8; b |= (b >> 5);
return ((uint32_t)r << 16) | ((uint32_t)g << 8) | ((uint32_t)b << 0);
}
/***************************************************************************************
** Function name: color24to16
** Description: convert 24 bit colour to a 16 bit 565 colour value
***************************************************************************************/
uint16_t TFT_eSPI::color24to16(uint32_t color888)
{
uint16_t r = (color888 >> 8) & 0xF800;
uint16_t g = (color888 >> 5) & 0x07E0;
uint16_t b = (color888 >> 3) & 0x001F;
return (r | g | b);
}
/***************************************************************************************
** Function name: invertDisplay
** Description: invert the display colours i = 1 invert, i = 0 normal
***************************************************************************************/
void TFT_eSPI::invertDisplay(bool i)
{
begin_tft_write();
// Send the command twice as otherwise it does not always work!
writecommand(i ? TFT_INVON : TFT_INVOFF);
writecommand(i ? TFT_INVON : TFT_INVOFF);
end_tft_write();
}
/**************************************************************************
** Function name: setAttribute
** Description: Sets a control parameter of an attribute
**************************************************************************/
void TFT_eSPI::setAttribute(uint8_t attr_id, uint8_t param) {
switch (attr_id) {
break;
case CP437_SWITCH:
_cp437 = param;
break;
case PSRAM_ENABLE:
#if defined (ESP32) && defined (CONFIG_SPIRAM_SUPPORT)
if (psramFound()) _psram_enable = param; // Enable the use of PSRAM (if available)
else
#endif
_psram_enable = false;
break;
//case 4: // TBD future feature control
// _tbd = param;
// break;
}
}
/**************************************************************************
** Function name: getAttribute
** Description: Get value of an attribute (control parameter)
**************************************************************************/
uint8_t TFT_eSPI::getAttribute(uint8_t attr_id) {
switch (attr_id) {
case CP437_SWITCH: // ON/OFF control of full CP437 character set
return _cp437;
case PSRAM_ENABLE:
return _psram_enable;
//case 3: // TBD future feature control
// return _tbd;
// break;
}
return false;
}
/***************************************************************************************
** Function name: alphaBlend
** Description: Blend 16bit foreground and background
*************************************************************************************x*/
uint16_t TFT_eSPI::alphaBlend(uint8_t alpha, uint16_t fgc, uint16_t bgc)
{
// For speed use fixed point maths and rounding to permit a power of 2 division
uint16_t fgR = ((fgc >> 10) & 0x3E) + 1;
uint16_t fgG = ((fgc >> 4) & 0x7E) + 1;
uint16_t fgB = ((fgc << 1) & 0x3E) + 1;
uint16_t bgR = ((bgc >> 10) & 0x3E) + 1;
uint16_t bgG = ((bgc >> 4) & 0x7E) + 1;
uint16_t bgB = ((bgc << 1) & 0x3E) + 1;
// Shift right 1 to drop rounding bit and shift right 8 to divide by 256
uint16_t r = (((fgR * alpha) + (bgR * (255 - alpha))) >> 9);
uint16_t g = (((fgG * alpha) + (bgG * (255 - alpha))) >> 9);
uint16_t b = (((fgB * alpha) + (bgB * (255 - alpha))) >> 9);
// Combine RGB565 colours into 16 bits
//return ((r&0x18) << 11) | ((g&0x30) << 5) | ((b&0x18) << 0); // 2 bit greyscale
//return ((r&0x1E) << 11) | ((g&0x3C) << 5) | ((b&0x1E) << 0); // 4 bit greyscale
return (r << 11) | (g << 5) | (b << 0);
}
/***************************************************************************************
** Function name: alphaBlend
** Description: Blend 16bit foreground and background with dither
*************************************************************************************x*/
uint16_t TFT_eSPI::alphaBlend(uint8_t alpha, uint16_t fgc, uint16_t bgc, uint8_t dither)
{
if (dither) {
int16_t alphaDither = (int16_t)alpha - dither + cpputils::randomNumber<long>(2*dither, espcpputils::esp_random_device{}); // +/-4 randomised
alpha = (uint8_t)alphaDither;
if (alphaDither < 0) alpha = 0;
if (alphaDither >255) alpha = 255;
}
return alphaBlend(alpha, fgc, bgc);
}
/***************************************************************************************
** Function name: alphaBlend
** Description: Blend 24bit foreground and background with optional dither
*************************************************************************************x*/
uint32_t TFT_eSPI::alphaBlend24(uint8_t alpha, uint32_t fgc, uint32_t bgc, uint8_t dither)
{
if (dither) {
int16_t alphaDither = (int16_t)alpha - dither + cpputils::randomNumber<long>(2*dither, espcpputils::esp_random_device{}); // +/-dither randomised
alpha = (uint8_t)alphaDither;
if (alphaDither < 0) alpha = 0;
if (alphaDither >255) alpha = 255;
}
// For speed use fixed point maths and rounding to permit a power of 2 division
uint16_t fgR = ((fgc >> 15) & 0x1FE) + 1;
uint16_t fgG = ((fgc >> 7) & 0x1FE) + 1;
uint16_t fgB = ((fgc << 1) & 0x1FE) + 1;
uint16_t bgR = ((bgc >> 15) & 0x1FE) + 1;
uint16_t bgG = ((bgc >> 7) & 0x1FE) + 1;
uint16_t bgB = ((bgc << 1) & 0x1FE) + 1;
// Shift right 1 to drop rounding bit and shift right 8 to divide by 256
uint16_t r = (((fgR * alpha) + (bgR * (255 - alpha))) >> 9);
uint16_t g = (((fgG * alpha) + (bgG * (255 - alpha))) >> 9);
uint16_t b = (((fgB * alpha) + (bgB * (255 - alpha))) >> 9);
// Combine RGB colours into 24 bits
return (r << 16) | (g << 8) | (b << 0);
}
/***************************************************************************************
** Function name: getSPIinstance
** Description: Get the instance of the SPI class
***************************************************************************************/
#if !defined (TFT_PARALLEL_8_BIT) && ! defined (RP2040_PIO_INTERFACE)
SPIClass& TFT_eSPI::getSPIinstance(void)
{
return spi;
}
#endif
/***************************************************************************************
** Function name: verifySetupID
** Description: Compare the ID if USER_SETUP_ID defined in user setup file
***************************************************************************************/
bool TFT_eSPI::verifySetupID(uint32_t id)
{
#if defined (USER_SETUP_ID)
if (USER_SETUP_ID == id) return true;
#else
id = id; // Avoid warning
#endif
return false;
}
/***************************************************************************************
** Function name: getSetup
** Description: Get the setup details for diagnostic and sketch access
***************************************************************************************/
void TFT_eSPI::getSetup(setup_t &tft_settings)
{
// tft_settings.version is set in header file
#if defined (USER_SETUP_INFO)
tft_settings.setup_info = USER_SETUP_INFO;
#else
tft_settings.setup_info = "NA";
#endif
#if defined (USER_SETUP_ID)
tft_settings.setup_id = USER_SETUP_ID;
#else
tft_settings.setup_id = 0;
#endif
#if defined (PROCESSOR_ID)
tft_settings.esp = PROCESSOR_ID;
#else
tft_settings.esp = -1;
#endif
#if defined (SUPPORT_TRANSACTIONS)
tft_settings.trans = true;
#else
tft_settings.trans = false;
#endif
#if defined (TFT_PARALLEL_8_BIT) || defined(TFT_PARALLEL_16_BIT)
tft_settings.serial = false;
tft_settings.tft_spi_freq = 0;
#else
tft_settings.serial = true;
tft_settings.tft_spi_freq = SPI_FREQUENCY/100000;
#ifdef SPI_READ_FREQUENCY
tft_settings.tft_rd_freq = SPI_READ_FREQUENCY/100000;
#endif
#ifdef TFT_SPI_PORT
tft_settings.port = TFT_SPI_PORT;
#else
tft_settings.port = 255;
#endif
#ifdef RP2040_PIO_SPI
tft_settings.interface = 0x10;
#else
tft_settings.interface = 0x0;
#endif
#endif
#if defined(TFT_SPI_OVERLAP)
tft_settings.overlap = true;
#else
tft_settings.overlap = false;
#endif
tft_settings.tft_driver = TFT_DRIVER;
tft_settings.tft_width = _init_width;
tft_settings.tft_height = _init_height;
#ifdef CGRAM_OFFSET
tft_settings.r0_x_offset = colstart;
tft_settings.r0_y_offset = rowstart;
tft_settings.r1_x_offset = 0;
tft_settings.r1_y_offset = 0;
tft_settings.r2_x_offset = 0;
tft_settings.r2_y_offset = 0;
tft_settings.r3_x_offset = 0;
tft_settings.r3_y_offset = 0;
#else
tft_settings.r0_x_offset = 0;
tft_settings.r0_y_offset = 0;
tft_settings.r1_x_offset = 0;
tft_settings.r1_y_offset = 0;
tft_settings.r2_x_offset = 0;
tft_settings.r2_y_offset = 0;
tft_settings.r3_x_offset = 0;
tft_settings.r3_y_offset = 0;
#endif
#if defined (TFT_MOSI)
tft_settings.pin_tft_mosi = TFT_MOSI;
#else
tft_settings.pin_tft_mosi = -1;
#endif
#if defined (TFT_MISO)
tft_settings.pin_tft_miso = TFT_MISO;
#else
tft_settings.pin_tft_miso = -1;
#endif
#if defined (TFT_SCLK)
tft_settings.pin_tft_clk = TFT_SCLK;
#else
tft_settings.pin_tft_clk = -1;
#endif
#if defined (TFT_CS)
tft_settings.pin_tft_cs = TFT_CS;
#else
tft_settings.pin_tft_cs = -1;
#endif
#if defined (TFT_DC)
tft_settings.pin_tft_dc = TFT_DC;
#else
tft_settings.pin_tft_dc = -1;
#endif
#if defined (TFT_RD)
tft_settings.pin_tft_rd = TFT_RD;
#else
tft_settings.pin_tft_rd = -1;
#endif
#if defined (TFT_WR)
tft_settings.pin_tft_wr = TFT_WR;
#else
tft_settings.pin_tft_wr = -1;
#endif
#if defined (TFT_RST)
tft_settings.pin_tft_rst = TFT_RST;
#else
tft_settings.pin_tft_rst = -1;
#endif
#if defined (TFT_PARALLEL_8_BIT) || defined(TFT_PARALLEL_16_BIT)
tft_settings.pin_tft_d0 = TFT_D0;
tft_settings.pin_tft_d1 = TFT_D1;
tft_settings.pin_tft_d2 = TFT_D2;
tft_settings.pin_tft_d3 = TFT_D3;
tft_settings.pin_tft_d4 = TFT_D4;
tft_settings.pin_tft_d5 = TFT_D5;
tft_settings.pin_tft_d6 = TFT_D6;
tft_settings.pin_tft_d7 = TFT_D7;
#else
tft_settings.pin_tft_d0 = -1;
tft_settings.pin_tft_d1 = -1;
tft_settings.pin_tft_d2 = -1;
tft_settings.pin_tft_d3 = -1;
tft_settings.pin_tft_d4 = -1;
tft_settings.pin_tft_d5 = -1;
tft_settings.pin_tft_d6 = -1;
tft_settings.pin_tft_d7 = -1;
#endif
#if defined (TFT_BL)
tft_settings.pin_tft_led = TFT_BL;
#endif
#if defined (TFT_BACKLIGHT_ON)
tft_settings.pin_tft_led_on = TFT_BACKLIGHT_ON;
#endif
#if defined (TOUCH_CS)
tft_settings.pin_tch_cs = TOUCH_CS;
tft_settings.tch_spi_freq = SPI_TOUCH_FREQUENCY/100000;
#else
tft_settings.pin_tch_cs = -1;
tft_settings.tch_spi_freq = 0;
#endif
}
////////////////////////////////////////////////////////////////////////////////////////
#ifdef TOUCH_CS
#include "Extensions/Touch.cpp"
#endif
//#include "Extensions/Button.cpp"
//#include "Extensions/Sprite.cpp"
#ifdef SMOOTH_FONT
#include "Extensions/Smooth_font.cpp"
#endif
#ifdef AA_GRAPHICS
#include "Extensions/AA_graphics.cpp" // Loaded if SMOOTH_FONT is defined by user
#endif
////////////////////////////////////////////////////////////////////////////////////////
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