#include <U8g2lib.h>

#define SDA_PIN 26
#define SCL_PIN 25

U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0,SCL_PIN, SDA_PIN ,U8X8_PIN_NONE);
int c_x = -15;
int c_y = 20;
int r_x = 128;
int r_y = 40;
void setup() {
  u8g2.begin();//初始化
  Serial.println("hello");
 }

void loop() { 
  static unsigned int start = millis();
  u8g2.clearBuffer();
  c_x++;
  if(c_x >= 143){
    c_x = -15;
  }
  u8g2.drawCircle(c_x,c_y,15);
    r_x--;

  if(r_x <= -30){
    r_x=128;
  }
  u8g2.drawFrame(r_x,r_y,30,20);
  u8g2.sendBuffer();
  static unsigned int end = millis();
  Serial.println(end-start);
  delay(10);


}