Bodmer
40d35b1892
Reference to particular drivers in examples have been removed as multiple display drivers are now supported. Tabs replaced by spaces in header file by file editor. RPi TFT with write strobe SPI clock rate dropped to 20MHz (display cannot cope with new high rate siWriteBlock() function)
146 lines
3.1 KiB
Arduino
146 lines
3.1 KiB
Arduino
/*
|
|
Tests string alignment
|
|
|
|
Normally strings are printed relative to the top left corner but this can be
|
|
changed with the setTextDatum() function. The library has #defines for:
|
|
|
|
TL_DATUM = 0 = Top left
|
|
TC_DATUM = 1 = Top centre
|
|
TR_DATUM = 2 = Top right
|
|
ML_DATUM = 3 = Middle left
|
|
MC_DATUM = 4 = Middle centre
|
|
MR_DATUM = 5 = Middle right
|
|
BL_DATUM = 6 = Bottom left
|
|
BC_DATUM = 7 = Bottom centre
|
|
BR_DATUM = 8 = Bottom right
|
|
|
|
L_BASELINE = 9 = Left character baseline (Line the 'A' character would sit on)
|
|
C_BASELINE = 10 = Centre character baseline
|
|
R_BASELINE = 11 = Right character baseline
|
|
|
|
So you can use lines to position text like:
|
|
|
|
tft.setTextDatum(BC_DATUM); // Set datum to bottom centre
|
|
|
|
Needs fonts 2, 4, 6, 7 and 8
|
|
|
|
#########################################################################
|
|
###### DON'T FORGET TO UPDATE THE User_Setup.h FILE IN THE LIBRARY ######
|
|
###### TO SELECT THE FONTS AND PINS YOU USE, SEE ABOVE ######
|
|
#########################################################################
|
|
*/
|
|
|
|
|
|
#include <SPI.h>
|
|
|
|
#include <TFT_eSPI.h> // Hardware-specific library
|
|
|
|
TFT_eSPI tft = TFT_eSPI(); // Invoke custom library
|
|
|
|
unsigned long drawTime = 0;
|
|
|
|
int x, y; // Coordinates for drawing
|
|
|
|
void setup(void) {
|
|
Serial.begin(115200);
|
|
tft.init();
|
|
tft.setRotation(1);
|
|
}
|
|
|
|
void loop() {
|
|
|
|
tft.fillScreen(TFT_BLACK);
|
|
|
|
x = 160, y = 120;
|
|
|
|
//Test all 9 datums 0-8 when plotting numbers
|
|
for(byte datum = 0; datum < 9; datum++) {
|
|
tft.setTextColor(TFT_WHITE, TFT_BLACK);
|
|
|
|
tft.setTextDatum(datum);
|
|
|
|
tft.drawNumber(42, x, y, 8);
|
|
|
|
drawCross(x, y, TFT_RED);
|
|
|
|
delay(1000);
|
|
tft.fillScreen(TFT_BLACK);
|
|
}
|
|
|
|
//Test all 9 datums 0-8 when plotting a string
|
|
// Datum works when text size is > 1
|
|
for(byte datum = 0; datum < 9; datum++) {
|
|
tft.setTextColor(TFT_WHITE, TFT_BLACK);
|
|
|
|
tft.setTextDatum(datum);
|
|
|
|
tft.setTextSize(2);
|
|
|
|
tft.drawString("[xox]", x, y, 4);
|
|
|
|
drawCross(x, y, TFT_GREEN);
|
|
|
|
delay(1000);
|
|
tft.fillScreen(TFT_BLACK);
|
|
}
|
|
|
|
tft.setTextSize(1);
|
|
|
|
tft.setTextColor(TFT_BLUE, TFT_BLACK);
|
|
// Here a special function is used that automatically centres the text
|
|
// on the x, y coordinate
|
|
tft.drawCentreString("69", x, y, 8);
|
|
|
|
drawCross(x, y, TFT_CYAN);
|
|
|
|
delay(1000);
|
|
|
|
tft.fillScreen(TFT_BLACK);
|
|
|
|
tft.setTextColor(TFT_RED, TFT_BLACK);
|
|
tft.drawRightString("88",160,120,8);
|
|
|
|
drawCross(x, y, TFT_RED);
|
|
|
|
delay(1000);
|
|
|
|
tft.fillScreen(TFT_BLACK);
|
|
|
|
tft.setTextColor(TFT_WHITE, TFT_BLUE);
|
|
|
|
//Test floating point drawing function
|
|
|
|
tft.setTextDatum(BC_DATUM); // Set datum to bottom centre
|
|
|
|
float test = 67.125;
|
|
y = 180;
|
|
tft.drawFloat(test, 4, x, y, 4);
|
|
delay(1000);
|
|
tft.fillScreen(TFT_BLACK);
|
|
test = -0.555555;
|
|
tft.drawFloat(test, 3, x, y, 4);
|
|
delay(1000);
|
|
tft.fillScreen(TFT_BLACK);
|
|
test = 0.1;
|
|
tft.drawFloat(test, 4, x, y, 4);
|
|
delay(1000);
|
|
tft.fillScreen(TFT_BLACK);
|
|
test = 9999999;
|
|
tft.drawFloat(test, 1, x, y, 4);
|
|
|
|
drawCross(x, y, TFT_RED);
|
|
|
|
delay(4000);
|
|
}
|
|
|
|
void drawCross(int x, int y, unsigned int color)
|
|
{
|
|
tft.drawLine(x - 5, y, x + 5, y, color);
|
|
tft.drawLine(x, y - 5, x, y + 5, color);
|
|
}
|
|
|
|
|
|
|
|
|
|
|