- unsigned char pin = PINA;
- unsigned char i;
- unsigned char port_states[N_BUTTONS] = {
- pin & _BV(PA3),
- pin & _BV(PA4),
- };
-
- for (i = 0; i < N_BUTTONS; i++) {
- if (!port_states[i]) { // is pressed
- if (i == 0 && just_waked_up)
- continue;
- if (button_pressed[i] == 0) {
- // begin of button press
- button_pressed[i] = 1;
- button_start[i] = jiffies;
-#if 0
- log_byte(0xC0);
- log_word(jiffies);
-#endif
- } else if (button_pressed[i] == 1) {
- // been already pressed
- uint16_t duration = jiffies - button_start[i];
- if (duration > 80) {
- // long button press
- button_pressed[i] = 2;
- long_press(i);
- }
- }
- } else { // is not pressed
- if (i == 0)
- just_waked_up = 0;
- if (button_pressed[i]) { // just depressed
- uint16_t duration = jiffies - button_start[i];
-#if 1
- log_byte(0xC1);
- log_word(duration);
- log_flush();
-#endif
- button_pressed[i] = 0;
- if (duration > 6 && duration < 30)
- short_press(i);
- }
+ // BEWARE: pins are at _zero_ when pressed!
+ if (!cur && prev) { // --- just pressed ---
+ button_start[i] = jiffies;
+ // set_status_led(button, 0);
+
+ } else if (!cur && !prev) { // --- is still pressed ---
+ uint16_t duration = jiffies - button_start[i];
+
+ if (duration > 80) {
+ // set_status_led(button, 1); // acknowledge long press
+ }
+ } else if (cur && !prev) { // --- just released ---
+ uint16_t duration = jiffies - button_start[i];
+
+ if (duration > 6 && duration < 30)
+ short_press(button);
+ } else if (duration > 80) {
+ // set_status_led(button, 0);
+ long_press(button);