From ca54325fbc989263a39f538ee2791b2485c1b641 Mon Sep 17 00:00:00 2001 From: Max Date: Sun, 1 Oct 2017 00:26:33 +0200 Subject: [PATCH] Add XPT2046 touch controller supports esp8266 + RPi displays OO --- User_Setups/Setup10_RPi_touch_ILI9486.h | 163 ++++++++++++++++++ .../Touch_Controller_Demo.ino | 76 ++++++++ 2 files changed, 239 insertions(+) create mode 100644 User_Setups/Setup10_RPi_touch_ILI9486.h create mode 100644 examples/480 x 320/Touch_Controller_Demo/Touch_Controller_Demo.ino diff --git a/User_Setups/Setup10_RPi_touch_ILI9486.h b/User_Setups/Setup10_RPi_touch_ILI9486.h new file mode 100644 index 0000000..b572e0f --- /dev/null +++ b/User_Setups/Setup10_RPi_touch_ILI9486.h @@ -0,0 +1,163 @@ +// USER DEFINED SETTINGS +// Set driver type, fonts to be loaded, pins used and SPI control method etc +// +// See the User_Setup_Select.h file if you wish to be able to define multiple +// setups and then easily select which setup file is used by the compiler. +// +// If this file is editted correctly then all the library example sketches should +// run without the need to make any more changes for a particular hardware setup! + +// ################################################################################## +// +// Section 0. Call up the right driver file and any options for it +// +// ################################################################################## + +// Only define one driver, the other ones must be commented out +//#define ILI9341_DRIVER +//#define ST7735_DRIVER +//#define ILI9163_DRIVER +//#define S6D02A1_DRIVER +#define RPI_ILI9486_DRIVER // 20MHz maximum SPI +// to enable XPT2046 touch controller, define TOUCH_CS + +// For ST7735 ONLY, define the type of display, originally this was based on the +// colour of the tab on the screen protector film but this is not always true, so try +// out the different options below if the screen does not display graphics correctly, +// e.g. colours wrong, mirror images, or tray pixels at the edges. +// Comment out ALL BUT ONE of these options for a ST7735 display driver, save this +// this User_Setup file, then rebuild and upload the sketch to the board again: + +//#define ST7735_INITB +//#define ST7735_GREENTAB +//#define ST7735_GREENTAB2 +//#define ST7735_GREENTAB3 +//#define ST7735_REDTAB +//#define ST7735_BLACKTAB + +// For ST7735 ONLY, define the pixel width and height in portrait orientation +//#define TFT_WIDTH 128 +//#define TFT_HEIGHT 160 +//#define TFT_HEIGHT 128 + +// ################################################################################## +// +// Section 1. Define the pins that are used to interface with the display here +// +// ################################################################################## + +// We must use hardware SPI, a minimum of 3 GPIO pins is needed. +// Typical setup for NodeMCU ESP-12 is : +// +// Display SDO/MISO to NodeMCU pin D6 (or leave disconnected if not reading TFT) +// Display LED to NodeMCU pin VIN (or 5V, see below) +// Display SCK to NodeMCU pin D5 +// Display SDI/MOSI to NodeMCU pin D7 +// Display DC (or AO)to NodeMCU pin D3 +// Display RESET to NodeMCU pin D4 (or RST, see below) +// Display CS to NodeMCU pin D8 (or GND, see below) +// Display GND to NodeMCU pin GND (0V) +// Display VCC to NodeMCU 5V or 3.3V +// +// The TFT RESET pin can be connected to the NodeMCU RST pin or 3.3V to free up a control pin +// +// With some displays such as the ILI9341 the TFT CS pin can be connected to GND if no more +// SPI deivces (e.g. an SD Card) are connected, in this case comment out the #define TFT_CS +// line below so it is NOT defined. Other displays such at the ST7735 require the TFT CS pin +// to be toggled during setup, so in these cases the TFT_CS line must be defined and connected. +// +// The NodeMCU D0 pin can be used for RST +// +// See Section 2. below if DC or CS is connected to D0 +// +// Note: only some versions of the NodeMCU provide the USB 5V on the VIN pin +// If 5V is not available at a pin you can use 3.3V but backlight brightness +// will be lower. + +// ###### EDIT THE PIN NUMBERS IN THE LINES FOLLOWING TO SUIT YOUR SETUP ###### + +// ModeMCU +#define TFT_CS PIN_D8 // Chip select control pin D8 +#define TFT_DC PIN_D3 // Data Command control pin +//#define TFT_RST PIN_D4 // Reset pin (could connect to NodeMCU RST, see next line) +#define TFT_RST -1 // Set TFT_RST to -1 if the display RESET is connected to NodeMCU RST or 3.3V +#define TOUCH_CS D4 // Chip select pin (T_CS) of touch screen controller XPT2046 + +//#define TFT_WR PIN_D2 // Write strobe for modified Raspberry Pi TFT only + +// ESP32 Dev board (planned, not supported yet) +//#define TFT_CS 5 // Chip select control pin +//#define TFT_DC 2 // Data Command control pin +//#define TFT_RST 4 // Reset pin (could connect to Arduino RESET pin) +//#define TFT_RST -1 // Set TFT_RST to -1 if display RESET is connected to ESP32 board RST + +// ################################################################################## +// +// Section 2. Define the way the DC and/or CS lines are driven +// +// ################################################################################## + +// Normally the library uses direct register access for the DC and CS lines for speed +// If D0 (GPIO16) is used for CS or DC then a different slower method must be used +// Uncomment one line if D0 is used for DC or CS +// DC on D0 = 6% performance penalty at 40MHz SPI running graphics test +// CS on D0 = 2% performance penalty at 40MHz SPI running graphics test + +// #define D0_USED_FOR_DC +// #define D0_USED_FOR_CS + +// ################################################################################## +// +// Section 3. Define the fonts that are to be used here +// +// ################################################################################## + +// Comment out the #defines below with // to stop that font being loaded +// The ESP8366 had plenty of memory so commenting out fonts is not normally necessary +// If all fonts are loaded the extra FLASH space required is about 17Kbytes... +// To save FLASH space only enable the fonts you need! + +#define LOAD_GLCD // Font 1. Original Adafruit 8 pixel font needs ~1820 bytes in FLASH +#define LOAD_FONT2 // Font 2. Small 16 pixel high font, needs ~3534 bytes in FLASH, 96 characters +#define LOAD_FONT4 // Font 4. Medium 26 pixel high font, needs ~5848 bytes in FLASH, 96 characters +#define LOAD_FONT6 // Font 6. Large 48 pixel font, needs ~2666 bytes in FLASH, only characters 1234567890:-.apm +#define LOAD_FONT7 // Font 7. 7 segment 48 pixel font, needs ~2438 bytes in FLASH, only characters 1234567890:. +#define LOAD_FONT8 // Font 8. Large 75 pixel font needs ~3256 bytes in FLASH, only characters 1234567890:-. +#define LOAD_GFXFF // FreeFonts. Include access to the 48 Adafruit_GFX free fonts FF1 to FF48 and custom fonts + +// ################################################################################## +// +// Section 4. Not used +// +// ################################################################################## + + +// ################################################################################## +// +// Section 5. Other options +// +// ################################################################################## + +// Define the SPI clock frequency +// With an ILI9341 display 40MHz works OK, 80MHz sometimes fails +// With a ST7735 display more than 27MHz may not work (spurious pixels and lines) +// With an ILI9163 display TBD MHz works OK, + +// #define SPI_FREQUENCY 1000000 +// #define SPI_FREQUENCY 5000000 + #define SPI_FREQUENCY 10000000 +// #define SPI_FREQUENCY 20000000 +// #define SPI_FREQUENCY 27000000 // Actually sets it to 26.67MHz = 80/3 +// #define SPI_FREQUENCY 40000000 // Maximum to use SPIFFS +// #define SPI_FREQUENCY 80000000 + +#define SPI_TOUCH_FREQUENCY 2500000 + + +// Comment out the following #define if "SPI Transactions" do not need to be +// supported. Tranaction support is required if other SPI devices are connected. +// When commented out the code size will be smaller and sketches will +// run slightly faster, so leave it commented out unless you need it! +// Transaction support is needed to work with SD library but not needed with TFT_SdFat + +// #define SUPPORT_TRANSACTIONS diff --git a/examples/480 x 320/Touch_Controller_Demo/Touch_Controller_Demo.ino b/examples/480 x 320/Touch_Controller_Demo/Touch_Controller_Demo.ino new file mode 100644 index 0000000..6eda034 --- /dev/null +++ b/examples/480 x 320/Touch_Controller_Demo/Touch_Controller_Demo.ino @@ -0,0 +1,76 @@ +#include "FS.h" +#include +#include +TFT_eSPI tft = TFT_eSPI(); + +#define CALIBRATION_FILE "/calibrationData" + +void setup(void) { + uint16_t calibrationData[4]; + uint8_t calDataOK = 0; + + Serial.begin(115200); + Serial.println("starting"); + + tft.init(); + + tft.setRotation(2); + tft.fillScreen((0xFFFF)); + + tft.setCursor(20, 0, 2); + tft.setTextColor(TFT_BLACK, TFT_WHITE); tft.setTextSize(1); + tft.println("calibration run"); + + // check file system + if (!SPIFFS.begin()) { + Serial.println("formating file system"); + + SPIFFS.format(); + SPIFFS.begin(); + } + + // check if calibration file exists + if (SPIFFS.exists(CALIBRATION_FILE)) { + File f = SPIFFS.open(CALIBRATION_FILE, "r"); + if (f) { + if (f.readBytes((char *)calibrationData, 12) == 12) + calDataOK = 1; + f.close(); + } + } + if (calDataOK) { + // calibration data valid + tft.setTouch(calibrationData); + } else { + // data not valid. recalibrate + tft.calibrateTouch(calibrationData, TFT_WHITE, TFT_RED, 15); + // store data + File f = SPIFFS.open(CALIBRATION_FILE, "w"); + if (f) { + f.write((const unsigned char *)calibrationData, 12); + f.close(); + } + } + + tft.fillScreen((0xFFFF)); + +} + +void loop() { + uint16_t x, y; + static uint16_t color; + + if (tft.getTouch(&x, &y) { + + tft.setCursor(5, 5, 2); + tft.printf("x: %i ", x); + tft.setCursor(5, 20, 2); + tft.printf("y: %i ", y); + + tft.drawPixel(x, y, color); + color += 155; + } +} + + +