esp32-arduino入门之点亮led

参考：https://learncplusplus.org/how-to-program-arduino-with-c/

#include <Arduino.h>
#include <WiFi.h>

/**
 * 
 *  https://learncplusplus.org/how-to-program-arduino-with-c/
 * 
*/

void setup() {
    Serial.begin(115200);
   pinMode( LED_BUILTIN, OUTPUT );
    printf("setup\n");
}

uint16_t  a  = 0;

void loop() {
    a++;
    digitalWrite(LED_BUILTIN, HIGH );  
    delay(1000);
   digitalWrite( LED_BUILTIN, LOW );  
   delay(1000);
 printf("loop %d\n",a) ;
}