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sketch_stm8.ino
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sketch_stm8.ino
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/* Used for STM8 to switch power; Part of the Powerswitch-UART*/
int counter = 0;
int old_value = 0;
void setup() {
// initialize digital pin LED_BUILTIN as an output.
pinMode(LED_BUILTIN, OUTPUT);
Serial_begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
digitalWrite(LED_BUILTIN, HIGH);
}
void loop() {
while (Serial_available() == 0) {};
// get incoming byte:
int value = Serial_read();
Serial_write(value); // give feedback
if ( value == 0x0d) {
if (counter == 2) digitalWrite(LED_BUILTIN, LOW); // switch LED On
if (counter == 3) digitalWrite(LED_BUILTIN, HIGH); // switch LED Off
counter = 0;
old_value = 0;
} else {
if (counter == 0) {
if ( value == 'o' || value == 'O') {
counter = counter + 1;
}
} else {
switch (counter) {
case 1:
if ( value == 'n' || value == 'N' || value == 'f' || value == 'F') {
counter = counter + 1;
old_value = value;
}
break;
case 2:
if ((value == 'f' || value == 'F') && (old_value == 'f' || old_value == 'F')) {
counter = counter + 1;
old_value = value;
} else {
counter = 0;
old_value = 0;
}
break;
default:
counter = 0;
old_value = 0;
}
}
}
}