#include <avr/interrupt.h>
#include <avr/sleep.h>
#include <util/delay.h>
+#include <stdlib.h> // for NULL
#include "lights.h"
-static uint16_t button_start[N_BUTTONS];
-static unsigned char button_pressed[N_BUTTONS];
-static unsigned char just_waked_up;
+#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;
-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)
+{
+ led_set_pattern(n + N_PWMLEDS, pattern);
+}
+
+unsigned char buttons_setup_in_progress()
+{
+ if (user_params_state // setup in progress ...
+ // or at least one button is pressed:
+ || prev_state.btn1
+ || prev_state.btn2)
+ 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;
+}
+
+unsigned char get_user_param(unsigned char param)
{
- unsigned char i;
+ if (param < MAX_USER_PARAMS)
+ return user_params[param];
+ return 0; // FIXME: internal error?
+}
- DDRB &= ~(_BV(PB4) | _BV(PB6));
- PORTB |= _BV(PB4) | _BV(PB6);
+static inline void short_press(unsigned char button)
+{
+ unsigned char param;
- for (i=0; i < N_BUTTONS; i++) {
- button_start[i] = 0;
- button_pressed[i] = 0;
+ if (user_params_state == 0) {
+ if (button == 0)
+ toggle_dim_mode();
+ else
+ set_panic_mode();
+ return;
}
- just_waked_up = 1;
+ 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]++;
- // log_byte(PORTB);
+ 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 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((PINB & _BV(PB6)) == 0)
- ; // wait for button release
+ 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(PA4); // set as input
+ DDRA |= _BV(PA3); // output
+ PORTA &= ~(_BV(PA3) | _BV(PA4)); // PA4 disable internal pull-up
+ // PA3 set to zero
- _delay_ms(100);
+ 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
- susp_gpio(); // disable the status LED
+ button_start[0] = 0;
+ button_start[1] = 0;
+ button_start[2] = 0;
- power_down();
+ prev_state.all = 0;
+ button_state.all = 0;
+ 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(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 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);
+ 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()
+static void handle_brake(unsigned char cur, unsigned char prev)
{
- unsigned char pinb = PINB;
- unsigned char i;
- unsigned char port_states[N_BUTTONS] = {
- pinb & _BV(PB6),
- pinb & _BV(PB4),
- };
+ 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];
- 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);
+ 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();
}
}
- } 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);
- }
+ button_start[2] = jiffies - 7; // avoid overflow
}
}
}
+void timer_check_buttons()
+{
+ handle_button(0, button_state.btn1, prev_state.btn1);
+
+ // 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, 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
+}
+