嗨,我想通过mqtt控制led,但是我找不到将led设置为发送给nodemcu的值的方法。这就是我现在尝试执行的操作,但是它只能执行0(然后关闭)或更高(然后打开)的值,并且不会变暗。
if(topic=="ledstrip/red") {
Serial.print("Changing RED Lights to ");
if(messageTemp == "on"){
for (int r = 0; r < 1023; r++) {
analogWrite(ledstrip_red, r);
delay(1);
}
digitalWrite(ledstrip_red, HIGH);
Serial.print("On");
} else if(messageTemp == "off"){
digitalWrite(ledstrip_red, HIGH);
for (int r = 1023; r > 0; r--) {
analogWrite(ledstrip_red, r);
delay(1);
}
digitalWrite(ledstrip_red, LOW);
Serial.print("Off");
} else {
Serial.print("Changing RED Brightness to ");
digitalWrite(ledstrip_red, messageTemp.toInt());
Serial.print(messageTemp);
}
答案 0 :(得分:0)
digitalWrite()
只能将值设置为0或1