#include "lights.h"
#define WAKEUP_LIMIT 5 // times 100 ms
-static uint16_t button_start[N_BUTTONS];
-static unsigned char prev_pin;
+#define SHORT_PRESS_MIN 2 // in jiffies (16 Hz ticks)
+#define SHORT_PRESS_MAX 5
+#define LONG_PRESS_MIN 10
+
+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 };
{
if (user_params_state // setup in progress ...
// or at least one button is pressed:
- || !(prev_pin & _BV(PA3))
- || !(prev_pin & _BV(PA4)))
+ || prev_state.btn1
+ || prev_state.btn2)
return 1;
return 0;
}
void init_buttons()
{
- DDRA &= ~(_BV(PA3) | _BV(PA4)); // set as input
- PORTA |= _BV(PA3) | _BV(PA4); // enable internal pull-ups
+ 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
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(PA3) | _BV(PA4); // enable internal pull-ups
+ PORTA |= _BV(PA4); // enable internal pull-up
+ PORTA &= ~_BV(PA3); // disable pull-up
GIMSK &= ~_BV(PCIE0);
GIMSK |= _BV(PCIE1);
- PCMSK0 = _BV(PCINT3) | _BV(PCINT4);
- // disable pin-change IRQs on all pins except PA3,PA4
+ 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, 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) {
+ if (duration >= LONG_PRESS_MIN) {
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 >= SHORT_PRESS_MIN && duration < SHORT_PRESS_MAX) {
short_press(button);
- } else if (duration > 80) {
+ } else if (duration > LONG_PRESS_MIN) {
set_status_led(button, NULL);
long_press(button);
}
}
}
-void timer_check_buttons()
+static void handle_brake(unsigned char cur, unsigned char prev)
{
- unsigned char pin = PINA & (_BV(PA3) | _BV(PA4));
+ uint16_t duration;
+
+ if (cur && !prev) { // --- just pressed ---
+ button_start[2] = jiffies;
+ return;
+ } else if (!cur && prev) { // --- just released ---
+ button_start[2] = jiffies;
+ return;
+ }
+ // --- no change ---
+ duration = jiffies - button_start[2];
- handle_button(0, pin & _BV(PA3), prev_pin & _BV(PA3));
- handle_button(1, pin & _BV(PA4), prev_pin & _BV(PA4));
+ if (duration <= 3)
+ return;
- prev_pin = pin;
+ if (cur) {
+ if (button_state.brake_working) {
+ static unsigned int brake_time;
+ if (button_state.brake_reported) {
+ if (brake_time) {
+ brake_time--;
+ } else {
+ brake_off();
+ button_state.brake_working = 0;
+ button_state.brake_reported = 0;
+ }
+ } else {
+ button_state.brake_reported = 1;
+ brake_on();
+ brake_time = 255; // avoid longer than ~16s
+ }
+ }
+ } 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
+}
+
+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;
_delay_ms(100);
- pin = PINA & (_BV(PA3) | _BV(PA4));
- } while (!(pin & _BV(PA3)) || !(pin & _BV(PA4)));
+ 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)