42 lines
778 B
C++
42 lines
778 B
C++
/*
|
|
Blink BUILTIN LED example
|
|
|
|
Author: Alexander Popov
|
|
License: Unlicense
|
|
*/
|
|
|
|
int user_input;
|
|
int delay_time = 1000;
|
|
bool led_state = HIGH;
|
|
unsigned long timer = 0;
|
|
|
|
void setup() {
|
|
pinMode(LED_BUILTIN, OUTPUT);
|
|
Serial.begin(9600);
|
|
}
|
|
|
|
void loop() {
|
|
// read blink delay
|
|
if (Serial.available()) {
|
|
user_input = Serial.parseInt();
|
|
if (user_input >= 100) {
|
|
delay_time = user_input;
|
|
|
|
Serial.print("Delay set to ");
|
|
Serial.print(user_input);
|
|
Serial.println(" ms");
|
|
}
|
|
else if (user_input > 0 && user_input < 100) {
|
|
Serial.println("Error: set delay time >=100ms");
|
|
}
|
|
}
|
|
|
|
// blink LED
|
|
if (millis() - timer > delay_time) {
|
|
led_state =! led_state;
|
|
digitalWrite(LED_BUILTIN, led_state);
|
|
|
|
timer = millis();
|
|
}
|
|
}
|