framework-arduinoteensy-cxx20/libraries/RA8875/Examples/_UNO/UserCustomChars/UserCustomChars.ino

/*
An example of how easy it's upload custom 8x16 symbols.
 RA8875 has 255 locations reserved for user custom designed symbols.
 */

#include <SPI.h>
#include <RA8875.h>


#define RA8875_CS 10

#define RA8875_RESET 9//any pin or nothing!


RA8875 tft = RA8875(RA8875_CS, RA8875_RESET);


//define some custom char (8x16)
const uint8_t battery1[16] = {
  0b00111000,
  0b00111000,
  0b11111111,
  0b10000001,
  0b10111101,
  0b10111101,
  0b10111101,
  0b10111101,
  0b10111101,
  0b10111101,
  0b10111101,
  0b10111101,
  0b10111101,
  0b10111101,
  0b10000001,
  0b11111111
};

const uint8_t battery2[16] = {
  0b00111000,
  0b00111000,
  0b11111111,
  0b10000001,
  0b10000001,
  0b10000001,
  0b10111101,
  0b10111101,
  0b10111101,
  0b10111101,
  0b10111101,
  0b10111101,
  0b10111101,
  0b10111101,
  0b10000001,
  0b11111111
};

const uint8_t battery3[16] = {
  0b00111000,
  0b00111000,
  0b11111111,
  0b10000001,
  0b10000001,
  0b10000001,
  0b10000001,
  0b10000001,
  0b10111101,
  0b10111101,
  0b10111101,
  0b10111101,
  0b10111101,
  0b10111101,
  0b10000001,
  0b11111111
};

const uint8_t battery4[16] = {
  0b00111000,
  0b00111000,
  0b11111111,
  0b10000001,
  0b10000001,
  0b10000001,
  0b10000001,
  0b10000001,
  0b10000001,
  0b10000001,
  0b10111101,
  0b10111101,
  0b10111101,
  0b10111101,
  0b10000001,
  0b11111111
};

const uint8_t battery5[16] = {
  0b00111000,
  0b00111000,
  0b11111111,
  0b10000001,
  0b10000001,
  0b10000001,
  0b10000001,
  0b10000001,
  0b10000001,
  0b10000001,
  0b10000001,
  0b10000001,
  0b10000001,
  0b10000001,
  0b10000001,
  0b11111111
};

//next 3 are part of the same char
const uint8_t battery6a[16] = {
  0b00000111,
  0b00000111,
  0b11111111,
  0b11000000,
  0b11000000,
  0b11000000,
  0b11110000,
  0b11111100,
  0b11111111,
  0b11111111,
  0b11111111,
  0b11111111,
  0b11111111,
  0b11111111,
  0b00000000,
  0b00000000
};

const uint8_t battery6b[16] = {
  0b11100000,
  0b11100000,
  0b11111111,
  0b00000011,
  0b00000011,
  0b00000011,
  0b00000011,
  0b00000011,
  0b00000011,
  0b11000011,
  0b11110011,
  0b11111111,
  0b11111111,
  0b11111111,
  0b00000000,
  0b00000000
};

const uint8_t battery6c[16] = {
  0b00011111,
  0b00000011,
  0b00001111,
  0b00000011,
  0b00011111,
  0b00000000,
  0b00011111,
  0b00000011,
  0b00001111,
  0b00000011,
  0b00011111,
  0b00000000,
  0b00000000,
  0b00000000,
  0b00000000,
  0b00000000
};

void setup()
{

  uint8_t i;
  tft.begin(RA8875_800x480);
  //upload chars in address 0x00 to 0x04
  tft.uploadUserChar(battery1, 0); //0x00
  tft.uploadUserChar(battery2, 1);
  tft.uploadUserChar(battery3, 2);
  tft.uploadUserChar(battery4, 3);
  tft.uploadUserChar(battery5, 4); //0x04
  tft.uploadUserChar(battery6a, 5); //
  tft.uploadUserChar(battery6b, 6); //
  tft.uploadUserChar(battery6c, 7); //
  //now custom char are stored in CGRAM
  tft.setTextColor(RA8875_WHITE, RA8875_BLACK);
  tft.setFontScale(0);
  for (i = 0; i < 5; i++) {
    tft.setCursor(tft.width() / 2, tft.height() / 2);
    tft.showUserChar(i);//retrieve from 0x00 to 0x04
    delay(200);
  }
  tft.setFontScale(0);
}

uint8_t rot;
void loop()
{
  uint8_t i;
  tft.clearScreen();//exact as tft.fillScreen();
  tft.setRotation(rot);
  tft.setTextColor(RA8875_WHITE, RA8875_BLACK);
  //custom char are managed as text but need to be called
  //by a special function
  //the only text parameter that is not accepted is setFontScale!
  for (i = 0; i < 5; i++) {
    tft.setCursor(10, 10);
    tft.showUserChar(i);//retrieve from 0x00 to 0x04
    delay(200);
  }

  //now another feature, you can design a char wider
  //by using many char slot combined.
  //below an example, 3 chars wider
  tft.setTextColor(RA8875_LIGHT_ORANGE);
  tft.setCursor(30, 11);
  tft.showUserChar(5, 2);
  delay(1000);
  if (rot > 3) rot = 0;
  rot++;
}