X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?p=bike-lights.git;a=blobdiff_plain;f=firmware%2Fbuttons.c;h=017a56c6560632fa2a1afe5280fdb966dab05a1f;hp=679d958cbec7e1585ae0e661a0140a740d0f3370;hb=c30006aaf666f7cff3a6ab949c613c2f8cc6163b;hpb=28656ba8d230fc14bab6445439fb5c1b966dddbe diff --git a/firmware/buttons.c b/firmware/buttons.c index 679d958..017a56c 100644 --- a/firmware/buttons.c +++ b/firmware/buttons.c @@ -2,11 +2,22 @@ #include #include #include +#include // for NULL #include "lights.h" -static uint16_t button_start[N_BUTTONS]; -static unsigned char prev_pin; +#define WAKEUP_LIMIT 5 // times 100 ms +static uint16_t button_start[3]; +union { + unsigned char all; + struct { + unsigned char btn1 : 1; + unsigned char btn2 : 1; + unsigned char brake : 1; + unsigned char brake_working : 1; + unsigned char brake_reported : 1; + }; +} button_state, prev_state; static unsigned char user_params[MAX_USER_PARAMS] = { 0, 0, 0 }; static unsigned char user_params_max[MAX_USER_PARAMS] = { 3, 2, 2 }; @@ -25,33 +36,33 @@ static void inline set_status_led(unsigned char n, pattern_t *pattern) led_set_pattern(n + N_PWMLEDS, pattern); } -pattern_t *status_pattern_select(unsigned char n) +unsigned char buttons_setup_in_progress() { - if (user_params_state) // Setup in progress - return number_pattern(n == 0 - ? user_params_state - : 1 + user_params[user_params_state-1] - ); - else if (!(prev_pin & _BV(PA3)) || !(prev_pin & _BV(PA4))) - // at least one button is pressed - return off_pattern; - // otherwise, an ordinary state - if (n == 0) { - // error led - return number_pattern(1 + ambient_zone); - } else { - return jiffies > 500 ? number_pattern(2) : zero_pattern; // for now - } + if (user_params_state // setup in progress ... + // or at least one button is pressed: + || prev_state.btn1 + || prev_state.btn2) + return 1; + return 0; } -static void toggle_bright_mode() +pattern_t *buttons_setup_status0_pattern_select() { - // TODO + if (user_params_state) // Setup in progress + return number_pattern(user_params_state, 1); + else + return NULL; } -static void set_panic_mode() +pattern_t *buttons_setup_status1_pattern_select() { - // TODO + if (user_params_state) // Setup in progress + return number_pattern( + 1 + user_params[user_params_state-1], + 1 + ); + else + return NULL; } unsigned char get_user_param(unsigned char param) @@ -67,7 +78,7 @@ static inline void short_press(unsigned char button) if (user_params_state == 0) { if (button == 0) - toggle_bright_mode(); + toggle_dim_mode(); else set_panic_mode(); return; @@ -88,7 +99,7 @@ static inline void short_press(unsigned char button) } // FIXME: notify somebody about user_params change? - set_status_led(1, status_pattern_select(1)); + set_status_led(1, buttons_setup_status1_pattern_select()); user_params_starttime = jiffies; } @@ -106,63 +117,176 @@ static inline void long_press(unsigned char button) if (user_params_state > MAX_USER_PARAMS) user_params_state = 1; - set_status_led(0, status_pattern_select(0)); - set_status_led(1, status_pattern_select(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)); - PORTA |= _BV(PA3) | _BV(PA4); + DDRA &= ~_BV(PA4); // set as input + DDRA |= _BV(PA3); // output + PORTA &= ~(_BV(PA3) | _BV(PA4)); // PA4 disable internal pull-up + // PA3 set to zero + + 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); + button_start[2] = 0; + + prev_state.all = 0; + button_state.all = 0; user_params_state = 0; } +void susp_buttons() +{ + DDRA &= ~(_BV(PA3) | _BV(PA4)); // set as input + PORTA |= _BV(PA4); // enable internal pull-up + PORTA &= ~_BV(PA3); // disable pull-up + + GIMSK &= ~_BV(PCIE0); + GIMSK |= _BV(PCIE1); + + PCMSK0 = _BV(PCINT4); + // disable pin-change IRQs on all pins except 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) { - // BEWARE: pins are at _zero_ when pressed! - if (!cur && prev) { // --- just pressed --- + if (cur && !prev) { // --- just pressed --- button_start[button] = jiffies; - set_status_led(button, off_pattern); + set_status_led(button, NULL); - } else if (!cur && !prev) { // --- is still pressed --- + } else if (cur && prev) { // --- is still pressed --- uint16_t duration = jiffies - button_start[button]; - if (duration > 80) { - set_status_led(button, on_pattern); + if (duration > 160) { + set_status_led(button, on1_pattern); // acknowledge long press } - } else if (cur && !prev) { // --- just released --- + } else if (!cur && prev) { // --- just released --- uint16_t duration = jiffies - button_start[button]; - if (duration > 6 && duration < 30) { + if (duration > 6 && duration < 60) { short_press(button); - } else if (duration > 80) { - set_status_led(button, off_pattern); + } else if (duration > 160) { + set_status_led(button, NULL); long_press(button); } // ignore other button-press durations } } -void timer_check_buttons() +static void handle_brake(unsigned char cur, unsigned char prev) { - unsigned char pin = PINA & (_BV(PA3) | _BV(PA4)); + if (cur && !prev) { // --- just pressed --- + button_start[2] = jiffies; + } else if (!cur && prev) { // --- just released --- + button_start[2] = jiffies; + } else { // --- no change --- + uint16_t duration = jiffies - button_start[2]; + + if (duration > 6) { + if (cur) { + if (button_state.brake_working + && !button_state.brake_reported) { + button_state.brake_reported = 1; + brake_on(); + } + } else { + button_state.brake_working = 1; + if (button_state.brake_reported) { + button_state.brake_reported = 0; + brake_off(); + } + } + button_start[2] = jiffies - 7; // avoid overflow + } + } +} - handle_button(0, pin & _BV(PA3), prev_pin & _BV(PA3)); - handle_button(1, pin & _BV(PA4), prev_pin & _BV(PA4)); +void timer_check_buttons() +{ + handle_button(0, button_state.btn1, prev_state.btn1); - prev_pin = pin; + // when button 1 is on, all other states are unreadable + if (button_state.btn1) { + prev_state.btn1 = button_state.btn1; + } else { + handle_button(1, button_state.btn2, prev_state.btn2); + handle_brake(button_state.brake, prev_state.brake); + prev_state.all = button_state.all; + } if (user_params_state && jiffies - user_params_starttime > 1000) { user_params_state = 0; - set_status_led(0, status_pattern_select(0)); - set_status_led(1, status_pattern_select(1)); + 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(PA4); + } while (!(pin & _BV(PA4))); + + gpio_set(0, 0); + + return wake_count > WAKEUP_LIMIT; +} + +void button_adc(uint16_t adcval) +{ +#if 0 + static unsigned char count=250; +#endif + PORTA &= ~_BV(PA3); // disable +5V to the hall probe + // adc.c will re-enable it again + + button_state.btn1 = 0; + button_state.btn2 = 0; + button_state.brake = 0; + + if (adcval == 0x3FF) { + button_state.brake = 1; + } else if (adcval > 0x240) { + button_state.brake = 1; + button_state.btn2 = 1; + } else if (adcval > 0x180) { + // nothing + } else if (adcval > 0xc0) { + button_state.btn2 = 1; + } else { + button_state.btn1 = 1; } + +#if 0 + if (--count) + return; + + count = 250; + log_word(adcval); + log_flush(); +#endif +} + +ISR(PCINT_vect) +{ + // empty - let it wake us from sleep, but do nothing else }