4 GPIO ports of ESP8266-01 control 4(5) LEDs
Posted: Tue Jun 02, 2015 2:57 am
GPIO 0, 1(=TXD), 2 and 3(=RXD), ESP8266-01 TXD LED is controlled by reverse logic
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int i;
void setup() {
for(i=0; i<=3; ++i) {
pinMode(i, OUTPUT);
digitalWrite(i, LOW);
}
}
void loop() {
for(i=0; i<=3; ++i) {
delay(1000);
digitalWrite(i, 1 - digitalRead(i) );
}
}