firmware/buttons.c: preliminary user params setup

[bike-lights.git] / firmware / buttons.c

diff --git a/firmware/buttons.c b/firmware/buttons.c
index 9a4c7e1172dfd52f1374969148f74945e3dc92bb..17f4bffad9f70e671994e30582616adb309aaa23 100644 (file)
--- a/firmware/buttons.c
+++ b/firmware/buttons.c
@@ -9,12 +9,92 @@ static uint16_t button_start[N_BUTTONS];
 static unsigned char button_pressed[N_BUTTONS];
 static unsigned char just_waked_up;
 
+static unsigned char user_params[MAX_USER_PARAMS] = { 0, 0, 0 };
+static unsigned char user_params_max[MAX_USER_PARAMS] = { 3, 2, 2 };
+
+static unsigned char user_params_state = 0;
+       /*
+        * Here 0 means "no setup currently in progress",
+        * 1 .. MAX_USER_PARAMS means "now short presses increase or decrease
+        *           the value of user_params[user_params_state-1]"
+        */
+
+static uint16_t user_params_starttime;
+
+static void do_sleep();
+
+static void toggle_bright_mode()
+{
+       // TODO
+}
+
+static void set_panic_mode()
+{
+       // TODO
+}
+
+unsigned char get_user_param(unsigned char param)
+{
+       if (param < MAX_USER_PARAMS)
+               return user_params[param];
+       return 0; // FIXME: internal error?
+}
+
+static inline void short_press(unsigned char button)
+{
+       unsigned char param;
+
+       if (user_params_state == 0) {
+               if (button == 0)
+                       toggle_bright_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];
+       } 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(2, user_params[param]);
+
+       user_params_starttime = jiffies;
+}
+
+static inline void long_press(unsigned char button)
+{
+       if (button == 0) {
+               do_sleep();
+               return;
+       }
+
+       // button 1 - cycle through states
+       user_params_state++;
+
+       if (user_params_state >= MAX_USER_PARAMS)
+               user_params_state = 1;
+
+       // set_status_led(1, state);
+       user_params_starttime = jiffies;
+}
+
 void init_buttons()
 {
        unsigned char i;
 
-       DDRB &= ~(_BV(PB4) | _BV(PB6));
-       PORTB |=  _BV(PB4) | _BV(PB6);
+       DDRA &= ~(_BV(PA3) | _BV(PA4));
+       PORTA |=  _BV(PA3) | _BV(PA4);
 
        for (i=0; i < N_BUTTONS; i++) {
                button_start[i] = 0;
@@ -22,8 +102,6 @@ void init_buttons()
        }
 
        just_waked_up = 1;
-
-       // log_byte(PORTB);
 }
 
 static void do_sleep()
@@ -34,7 +112,7 @@ static void do_sleep()
        hw_suspend();
        gpio_before_poweroff(); // Set the status LED on again
 
-       while((PINB & _BV(PB6)) == 0)
+       while((PINA & _BV(PA3)) == 0)
                ; // wait for button release
 
        _delay_ms(100);
@@ -44,25 +122,13 @@ static void do_sleep()
        power_down();
 }
 
-static void inline long_press(unsigned char n)
-{
-       if (n == 0)
-               do_sleep();
-}
-
-static void inline short_press(unsigned char n)
-{
-       if (n == 0)
-               gpio_set(2,1);
-}
-
 void timer_check_buttons()
 {
-       unsigned char pinb = PINB;
+       unsigned char pin = PINA;
        unsigned char i;
        unsigned char port_states[N_BUTTONS] = {
-               pinb & _BV(PB6),
-               pinb & _BV(PB4),
+               pin & _BV(PA3),
+               pin & _BV(PA4),
        };
 
        for (i = 0; i < N_BUTTONS; i++) {