COMPLETE multi coin tutorial RESQUEST

Projects Programming
77

For others following along...
Sorry two small oversights in my earlier code sample - // <<——

#define ENABLE_PIN 3
#define PULSE_PIN. 4

bool count_enabled;
bool prev_enabled;
bool prev_pulse = false;  // assumes positive logic
byte pulse_count = 0;

void setup() {
  pinmode(ENABLE_PIN, INPUT);  // assumes thesepins are driven
  pinmode(PULSE_PUN, INPUT);  // (not open-collector)

  count_enabled = !digitalread(ENABLE_PIN); // capture idle state of pin
  prev_enabled = !count_enabled;  // <<—— ensure it is upside down
}

void loop() {
  count_enabled = (digitalread(ENABLE_PIN) == true);  //
  if (count_enabled != prev_enabled) {
    prev_enabled = count_enabled;  // <<—— ready for next cycle
    if (count_enabled) {
      pulse_state = digitalread(PULSE_PIN);
      if (pulse_state != prev_pulse) {
        if (pulse_state) {  // only count positive edges
          pulse_count++;
        }
        prev_pulse = pulse_state;
      }
    } else {  // enable pin has dropped  // <<—— removed stray .
       // process the pulse_count
       // I’ll leave that to you...  
       pulse_count = 0;  // reset the pulse count value
    }
  }
}