X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;f=firmware%2Fbuttons.c;h=2e80142b3be896c0bbf2ffa9961c1b2c48127a58;hb=9ae181a57836e6a6e133400f4d88e61feb6481fc;hp=d0cbd51b10c5d2bff3ef35e85abc315d2f099907;hpb=5ea15612762e0ed843fd31734b4937c15892b546;p=bike-lights.git diff --git a/firmware/buttons.c b/firmware/buttons.c index d0cbd51..2e80142 100644 --- a/firmware/buttons.c +++ b/firmware/buttons.c @@ -2,105 +2,211 @@ #include #include #include +#include // for NULL #include "lights.h" +#define WAKEUP_LIMIT 5 // times 100 ms static uint16_t button_start[N_BUTTONS]; -static unsigned char button_pressed[N_BUTTONS]; -static unsigned char just_waked_up; +static unsigned char prev_pin; -void init_buttons() +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 inline set_status_led(unsigned char n, pattern_t *pattern) { - unsigned char i; + led_set_pattern(n + N_PWMLEDS, pattern); +} - DDRA &= ~(_BV(PA3) | _BV(PA4)); - PORTA |= _BV(PA3) | _BV(PA4); +unsigned char buttons_setup_in_progress() +{ + if (user_params_state // setup in progress ... + // or at least one button is pressed: + || !(prev_pin & _BV(PA3)) + || !(prev_pin & _BV(PA4))) + return 1; + return 0; +} + +pattern_t *buttons_setup_status0_pattern_select() +{ + if (user_params_state) // Setup in progress + return number_pattern(user_params_state, 1); + else + return NULL; +} + +pattern_t *buttons_setup_status1_pattern_select() +{ + if (user_params_state) // Setup in progress + return number_pattern( + 1 + user_params[user_params_state-1], + 1 + ); + else + return NULL; +} - for (i=0; i < N_BUTTONS; i++) { - button_start[i] = 0; - button_pressed[i] = 0; +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_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? - just_waked_up = 1; + set_status_led(1, buttons_setup_status1_pattern_select()); - // log_byte(PORTA); + user_params_starttime = jiffies; } -static void do_sleep() +static inline void long_press(unsigned char button) { - log_byte(0xb0); - log_flush(); + if (button == 0) { + power_down(); + return; + } - hw_suspend(); - gpio_before_poweroff(); // Set the status LED on again + // button 1 - cycle through states + user_params_state++; - while((PINA & _BV(PA3)) == 0) - ; // wait for button release + if (user_params_state > MAX_USER_PARAMS) + user_params_state = 1; - _delay_ms(100); + set_status_led(0, buttons_setup_status0_pattern_select()); + set_status_led(1, buttons_setup_status1_pattern_select()); + user_params_starttime = jiffies; +} - susp_gpio(); // disable the status LED +void init_buttons() +{ + DDRA &= ~(_BV(PA3) | _BV(PA4)); // set as input + PORTA |= _BV(PA3) | _BV(PA4); // enable internal pull-ups - power_down(); + 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; } -static void inline long_press(unsigned char n) +void susp_buttons() { - if (n == 0) - do_sleep(); + 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 inline short_press(unsigned char n) +static void handle_button(unsigned char button, unsigned char cur, + unsigned char prev) { - if (n == 0) - gpio_set(2,1); + // BEWARE: pins are at _zero_ when pressed! + if (!cur && prev) { // --- just pressed --- + button_start[button] = jiffies; + set_status_led(button, NULL); + + } else if (!cur && !prev) { // --- is still pressed --- + uint16_t duration = jiffies - button_start[button]; + + if (duration > 160) { + set_status_led(button, on1_pattern); + // acknowledge long press + } + } else if (cur && !prev) { // --- just released --- + uint16_t duration = jiffies - button_start[button]; + + if (duration > 6 && duration < 60) { + short_press(button); + } else if (duration > 160) { + set_status_led(button, NULL); + long_press(button); + } + // ignore other button-press durations + } } void timer_check_buttons() { - 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); - } - } + unsigned char pin = PINA & (_BV(PA3) | _BV(PA4)); + + handle_button(0, pin & _BV(PA3), prev_pin & _BV(PA3)); + handle_button(1, pin & _BV(PA4), prev_pin & _BV(PA4)); + + prev_pin = pin; + + if (user_params_state && jiffies - user_params_starttime > 1000) { + user_params_state = 0; + set_status_led(0, buttons_setup_status0_pattern_select()); + set_status_led(1, buttons_setup_status1_pattern_select()); } } +unsigned char buttons_wait_for_release() +{ + uint16_t wake_count = 0; + unsigned char pin; + + do { + if (wake_count++ > WAKEUP_LIMIT) + gpio_set(0, 1); // inform the user + + _delay_ms(100); + + pin = PINA & (_BV(PA3) | _BV(PA4)); + } while (!(pin & _BV(PA3)) || !(pin & _BV(PA4))); + + gpio_set(0, 0); + + return wake_count > WAKEUP_LIMIT; + +} + +ISR(PCINT_vect) +{ + // empty - let it wake us from sleep, but do nothing else +} +