+static inline void short_press(unsigned char button)
+{
+ unsigned char param;
+
+ if (user_params_state == 0) {
+ if (button == 0)
+ toggle_dim_mode();
+ else
+ set_panic_mode();
+ return;
+ }
+
+ param = user_params_state-1;
+
+ if (button == 0) {
+ if (user_params[param])
+ user_params[param]--;
+ else
+ user_params[param] = user_params_max[param]-1;
+ } else {
+ user_params[param]++;
+
+ if (user_params[param] >= user_params_max[param])
+ user_params[param] = 0;
+ }
+ // FIXME: notify somebody about user_params change?
+
+ set_status_led(1, buttons_setup_status1_pattern_select());
+
+ user_params_starttime = jiffies;
+}
+
+static inline void long_press(unsigned char button)
+{
+ if (button == 0) {
+ power_down();
+ return;
+ }
+
+ // button 1 - cycle through states
+ user_params_state++;
+
+ if (user_params_state > MAX_USER_PARAMS)
+ user_params_state = 1;
+
+ set_status_led(0, buttons_setup_status0_pattern_select());
+ set_status_led(1, buttons_setup_status1_pattern_select());
+ user_params_starttime = jiffies;
+}
+
+void init_buttons()
+{
+ DDRA &= ~(_BV(PA3) | _BV(PA4)); // set as input
+ PORTA |= _BV(PA3) | _BV(PA4); // enable internal pull-ups
+
+ GIMSK &= ~(_BV(PCIE0) | _BV(PCIE1)); // disable pin-change IRQs
+ PCMSK0 = 0; // disable pin-change IRQs on all pins of port A
+ PCMSK1 = 0; // disable pin-change IRQs on all pins of port B
+
+ button_start[0] = 0;
+ button_start[1] = 0;
+ prev_pin = _BV(PA3) | _BV(PA4);
+ user_params_state = 0;
+}
+
+void susp_buttons()
+{
+ DDRA &= ~(_BV(PA3) | _BV(PA4)); // set as input
+ PORTA |= _BV(PA3) | _BV(PA4); // enable internal pull-ups
+
+ GIMSK &= ~_BV(PCIE0);
+ GIMSK |= _BV(PCIE1);
+
+ PCMSK0 = _BV(PCINT3) | _BV(PCINT4);
+ // disable pin-change IRQs on all pins except PA3,PA4
+ PCMSK1 = 0; // disable pin-change IRQs on all pins of port B
+}
+
+static void handle_button(unsigned char button, unsigned char cur,
+ unsigned char prev)