firmware/buttons.c: preliminary user params setup

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

diff --git a/firmware/buttons.c b/firmware/buttons.c
index d5a18bec515ba2d7f3f17d645b923ffebe2e823b..17f4bffad9f70e671994e30582616adb309aaa23 100644 (file)
--- a/firmware/buttons.c
+++ b/firmware/buttons.c
@@ -1,72 +1,147 @@
 #include <avr/io.h>
 #include <avr/interrupt.h>
 #include <avr/sleep.h>
+#include <util/delay.h>
 
 #include "lights.h"
 
 static uint16_t button_start[N_BUTTONS];
 static unsigned char button_pressed[N_BUTTONS];
+static unsigned char just_waked_up;
 
-static unsigned char sleep_after_release;
+static unsigned char user_params[MAX_USER_PARAMS] = { 0, 0, 0 };
+static unsigned char user_params_max[MAX_USER_PARAMS] = { 3, 2, 2 };
 
-void init_buttons()
+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)
 {
-       DDRB &= ~(_BV(PB6) | _BV(PB0));
-       PORTB |= _BV(PB6) | _BV(PB0);
+       if (button == 0) {
+               do_sleep();
+               return;
+       }
 
-       sleep_after_release = 0;
-       // log_byte(PORTB);
+       // 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;
 }
 
-static void inline long_press(unsigned char n)
+void init_buttons()
 {
-       sleep_after_release = 1;
-       gpio_set(1, 1);
+       unsigned char i;
+
+       DDRA &= ~(_BV(PA3) | _BV(PA4));
+       PORTA |=  _BV(PA3) | _BV(PA4);
+
+       for (i=0; i < N_BUTTONS; i++) {
+               button_start[i] = 0;
+               button_pressed[i] = 0;
+       }
+
+       just_waked_up = 1;
 }
 
 static void do_sleep()
 {
-       // led_set_status(2);
-       // MCUCR |= _BV(ISC00); // any edge generates IRQ
        log_byte(0xb0);
        log_flush();
-       set_sleep_mode(SLEEP_MODE_PWR_DOWN);
-       PORTA = 0;
-       PORTB = 0;
-       DDRA = 0;
-       DDRB = 0;
-       GIMSK |= _BV(INT0); // enable INT0
-       sleep_enable();
-       sei();
-       sleep_cpu();
-       sleep_disable();
-       cli();
-       GIMSK &= ~_BV(INT0); // disable INT0
-       hw_setup();
-}
 
-static void inline short_press(unsigned char n)
-{
-       led_set_status(1);
+       hw_suspend();
+       gpio_before_poweroff(); // Set the status LED on again
+
+       while((PINA & _BV(PA3)) == 0)
+               ; // wait for button release
+
+       _delay_ms(100);
+
+       susp_gpio(); // disable the status LED
+
+       power_down();
 }
 
 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(PB0),
+               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);
+                               log_byte(0xC0);
+                               log_word(jiffies);
 #endif
                        } else if (button_pressed[i] == 1) {
                                // been already pressed
@@ -78,6 +153,8 @@ void timer_check_buttons()
                                }
                        }
                } 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
@@ -88,17 +165,8 @@ void timer_check_buttons()
                                button_pressed[i] = 0;
                                if (duration > 6 && duration < 30)
                                        short_press(i);
-                               if (sleep_after_release)
-                                       do_sleep();
                        }
                }
        }
 }
 
-ISR(INT0_vect)
-{
-       hw_setup();
-       log_byte(0xbb);
-       log_flush();
-}
-