Help modifying code

Projects Programming
7

Thanks for the help aarg, I thought it would be something simple with the code but when I get stuck with no direction to go I post a topic and someone usually ask's me the right question and gets me moving in the right direction.

I was able to change the the basic code I posted along with a couple other things to get everything working properly. I changed the following code,

 if (!tft.bufferEmpty()) {
    TS_Point p = tft.getPoint();

to this,

 if (tft.touched()) {
    tft.touchRead(&tx,&ty);

along with changing a while statement to an if statement a little farther down.

I will post the completed code just in case someone has a similar problem in the future.

#include <SPI.h>
#include <Wire.h>
#include "Adafruit_GFX.h"
#include "Adafruit_RA8875.h"

#define RA8875_CS 10
#define RA8875_RESET 9

Adafruit_RA8875 tft = Adafruit_RA8875(RA8875_CS, RA8875_RESET);
uint16_t tx, ty;

byte rotation = 0;
int x, y;
const byte row = 4;
const byte col = 3;
byte lastHit = 0;
byte currentHit = 0;
Adafruit_GFX_Button btn[row * col];
const int TS_MAXX = 900, TS_MINX = 60, TS_MAXY = 920, TS_MINY = 80;

void setup() {
  Serial.begin(9600);
  if (!tft.begin(RA8875_800x480)) {
    Serial.println("RA8875 Not Found!");
    while (1);
  }
  Serial.println("Found RA8875");

  tft.displayOn(true);
  tft.GPIOX(true);      // Enable TFT - display enable tied to GPIOX
  tft.PWM1config(true, RA8875_PWM_CLK_DIV1024); // PWM output for backlight
  tft.PWM1out(255);
  tft.fillScreen(RA8875_BLACK);
  tft.textMode();
  tft.textSetCursor(20, 15);
  tft.textEnlarge(2);
  tft.textColor(RA8875_WHITE, RA8875_RED);
  tft.textWrite("Choose how many petals you need.");
  tft.graphicsMode();
  tft.touchEnable(true);
  btnGrid();

}
void loop() {
  if (tft.touched()) {
    tft.touchRead(&tx,&ty);
    switch (rotation) {
      case 0:
        tx = map(tx, TS_MINX, TS_MAXX, 0, tft.width());
        ty = map(ty, TS_MINY, TS_MAXY, 0, tft.height());
        break;
      case 1:
        // p.x, p.y reversed //
        tx = map(ty, TS_MINY, TS_MAXY, 0, tft.width());
        ty = map(tx, TS_MAXX, TS_MINX, 0, tft.height());
        break;
      case 2:
        tx = map(tx, TS_MAXX, TS_MINX, 0, tft.width());
        ty = map(ty, TS_MAXY, TS_MINY, 0, tft.height());
        break;
      case 3:
        // p.x, p.y reversed //
        tx = map(ty, TS_MAXY, TS_MINY, 0, tft.width());
        ty = map(tx, TS_MINX, TS_MAXX, 0, tft.height());
        break;
    }
  }
  if (tft.touched()) {
    for (uint8_t b = 0; b < row * col; b++) {
      if (btn[b].contains(tx, ty)) {
        btn[b].press(true);
        btn[b].drawButton(true);
        currentHit = b;
      } else if (btn[b].contains(tx, ty) == false) {
        btn[b].press(false);
        if (b == lastHit) {
          btn[b].drawButton(false);
        }
      } else {
        return;
      }
    }
    lastHit = currentHit;
  }

}

void btnGrid() {

  int left, top;
  int l = 50;
  int t = 90;
  int w = 200;
  int h = 60;
  byte hgap = 40;
  byte vgap = 40;
  byte id = 0;
  char *titleStr[row * col] = {"4", "6", "8", "9", "12", "16", "Load", "1"};
  for (byte j = 0; j < row; j++) {
    for (byte i = 0; i < col; i++) {
      left = l + i * (w + vgap);
      top = t + j * (h + hgap);
      btn[id].initButtonUL( &tft, left, top, w, h, RA8875_WHITE, RA8875_RED, RA8875_GREEN, titleStr[id], 3 );
      if (id == currentHit) {
        // inverted
        btn[id].drawButton(true);
      } else {
        btn[id].drawButton(false);
      }
      id++;
    }
  }
}