Example Code of Drawing a Circle for Arduino

Introduction

The function of the program: draw a circle with a center point coordinate (0,0), radius 20 and green arc at the centre of the screen, and fill the circle with red.

Sample Code

#include "DFRobot_ST7687S_Latch.h"

#ifdef __AVR__
uint8_t pin_cs = 3, pin_rs = 5, pin_wr = 6, pin_lck = 7;
#else
uint8_t pin_cs = D3, pin_rs = D5, pin_wr = D6, pin_lck = D7;
#endif

DFRobot_ST7687S_Latch tft(pin_cs, pin_rs, pin_wr, pin_lck);

void setup(void)
{
  Serial.begin(115200);
  tft.begin();
  tft.fillScreen(DISPLAY_WHITE);
}

void loop(void)
{
  tft.drawCircle(0, 0, 20, DISPLAY_GREEN);  //draw circle
  delay(1000);
  tft.fillCircle(0, 0, 20, DISPLAY_RED);  //fill circle
  delay(1000);
  tft.fillScreen(DISPLAY_WHITE);
  delay(1000);
}

Result