Quick test sketch
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#include <SPI.h>
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#include "Adafruit_GFX.h"
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#include "Adafruit_RA8875.h"
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#define RA8875_INT 3
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#define RA8875_CS 10
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#define RA8875_RESET 9
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Adafruit_RA8875 tft = Adafruit_RA8875(RA8875_CS, RA8875_RESET);
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uint16_t tx, ty;
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void setup()
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{
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Serial.begin(9600);
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Serial.println("RA8875 start");
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/* Initialise the display using 'RA8875_480x272' or 'RA8875_800x480' */
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if (!tft.begin(RA8875_480x272)) {
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Serial.println("RA8875 Not Found!");
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while (1);
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}
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Serial.println("Found RA8875");
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/*
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//RA8875_softReset();
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for (uint8_t i=0; i<100; i++) {
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Serial.print("$"); Serial.print(i, HEX);
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Serial.print(": 0x"); Serial.println(readReg(i), HEX);
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}
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*/
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tft.displayOn(true);
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tft.GPIOX(true); // Enable TFT - display enable tied to GPIOX
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tft.PWM1config(true, RA8875_PWM_CLK_DIV1024); // PWM output for backlight
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tft.PWM1out(255);
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// Play with PWM
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for (uint8_t i=255; i!=0; i-=5 )
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{
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tft.PWM1out(i);
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delay(1);
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}
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for (uint8_t i=0; i!=255; i+=5 )
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{
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tft.PWM1out(i);
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delay(1);
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}
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tft.PWM1out(255);
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// Try some GFX acceleration!
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tft.drawCircle(100, 100, 50, RA8875_BLACK);
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tft.fillCircle(100, 100, 49, RA8875_GREEN);
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tft.drawPixel(10,10,RA8875_BLACK);
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tft.drawPixel(11,11,RA8875_BLACK);
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tft.fillRoundRect(200, 10, 200, 100, 10, RA8875_RED);
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tft.fillScreen(RA8875_GREEN);
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delay(100);
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tft.fillScreen(RA8875_RED);
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delay(100);
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tft.fillScreen(RA8875_GREEN);
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delay(100);
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tft.fillScreen(RA8875_RED);
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delay(100);
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tft.fillScreen(RA8875_GREEN);
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delay(100);
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tft.fillScreen(RA8875_BLACK);
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tft.drawRect(10, 10, 400, 200, RA8875_GREEN);
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tft.fillRect(11, 11, 398, 198, RA8875_BLUE);
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tft.drawLine(10, 10, 200, 100, RA8875_RED);
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pinMode(RA8875_INT, INPUT);
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digitalWrite(RA8875_INT, HIGH);
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tft.touchEnable(true);
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Serial.print("Status: "); Serial.println(tft.readStatus(), HEX);
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Serial.println("Waiting for touch events ...");
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}
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void loop()
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{
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/* Wait around for touch events */
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if (! digitalRead(RA8875_INT))
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{
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if (tft.touched())
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{
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Serial.print("Touch: ");
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tft.touchRead(&tx, &ty);
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Serial.print(tx); Serial.print(", "); Serial.println(ty);
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}
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}
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}
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