wemos d1 内键led 亮灯问题

jarrys1

wemos d1 内键led 亮灯问题

各位好请问这样写为何内键led不会亮灯呢

void setup() {

  pinMode(BUILTIN_LED,OUTPUT);   

   }

void loop(){

digitalWrite(BUILTIN_LED, HIGH);                  

}

然后很奇怪的是,用以下方式他会闪烁

void setup() {

  pinMode(BUILTIN_LED,OUTPUT);   

   }

void loop(){

digitalWrite(BUILTIN_LED, HIGH);  

digitalWrite(BUILTIN_LED, LOW);                  

}

跑龙套的保

说明led是低电平亮灯，digitalWrite(BUILTIN_LED, LOW);  

jarrys1

若这样是可以亮10秒 真的蛮怪的
void setup() {
  pinMode(BUILTIN_LED,OUTPUT);   
   }
void loop(){
digitalWrite(BUILTIN_LED, HIGH);  
delay(10000);
}

AZI1974

用这个屏蔽掉高的那句,8266的灯常量,显然,那个led是低电平亮灯
void setup() {
  pinMode(LED_BUILTIN, OUTPUT);     // Initialize the LED_BUILTIN pin as an output
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(LED_BUILTIN, LOW);   // Turn the LED on (Note that LOW is the voltage level
  // but actually the LED is on; this is because
  // it is active low on the ESP-01)
  delay(1000);                      // Wait for a second
  //digitalWrite(LED_BUILTIN, HIGH);  // Turn the LED off by making the voltage HIGH
  delay(2000);                      // Wait for two seconds (to demonstrate the active low LED)
}

topdog

开发板要选对。


程序如下：

void setup() {
  pinMode(LED_BUILTIN, OUTPUT);    
}


void loop() {
  digitalWrite(LED_BUILTIN, LOW);  
  delay(1000);                      
  digitalWrite(LED_BUILTIN, HIGH);  
  delay(2000);                      
}