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Car Ignition Auto Stop (patch #736339 by Craig Sather)

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@3976 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Björn Stenberg 2003-10-17 14:49:00 +00:00
parent 3953211531
commit b1c429e6fb
8 changed files with 129 additions and 12 deletions
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89
firmware/powermgmt.c
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@ -64,11 +64,18 @@ void set_battery_capacity(int capacity)
{
(void)capacity;
}
void set_car_adapter_mode(bool setting)
{
(void)setting;
}
#else /* not SIMULATOR */
int battery_capacity = 1500; /* only a default value */
int battery_level_cached = -1; /* battery level of this minute, updated once
per minute */
static bool car_adapter_mode_enabled = false;
static int poweroff_idle_timeout_value[15] =
{
@ -306,8 +313,8 @@ static void handle_auto_poweroff(void)
#endif
!usb_inserted() &&
(mpeg_stat == 0 ||
(mpeg_stat == (MPEG_STATUS_PLAY | MPEG_STATUS_PAUSE)) &&
!sleeptimer_active))
((mpeg_stat == (MPEG_STATUS_PLAY | MPEG_STATUS_PAUSE)) &&
!sleeptimer_active)))
{
if(TIME_AFTER(current_tick, last_keypress + timeout) &&
TIME_AFTER(current_tick, last_disk_activity + timeout))
@ -346,6 +353,78 @@ static void handle_auto_poweroff(void)
}
}
void set_car_adapter_mode(bool setting)
{
car_adapter_mode_enabled = setting;
}
static void car_adapter_mode_processing(void)
{
static bool charger_power_is_on = false;
static bool waiting_to_resume_play = false;
static long play_resume_time;
if (car_adapter_mode_enabled) {
if (waiting_to_resume_play) {
if (TIME_AFTER(current_tick, play_resume_time)) {
if (mpeg_status() & MPEG_STATUS_PAUSE) {
mpeg_resume();
}
waiting_to_resume_play = false;
}
}
else {
if (charger_power_is_on) {
/* if external power was turned off */
if (!charger_inserted()) {
charger_power_is_on = false;
/* if playing */
if ((mpeg_status() & MPEG_STATUS_PLAY) &&
!(mpeg_status() & MPEG_STATUS_PAUSE)) {
mpeg_pause();
}
}
}
else {
/* if external power was turned on */
if (charger_inserted()) {
charger_power_is_on = true;
/* if paused */
if (mpeg_status() & MPEG_STATUS_PAUSE) {
/* delay resume a bit while the engine is cranking */
play_resume_time = current_tick + HZ*5;
waiting_to_resume_play = true;
}
}
}
}
}
}
/*
* This function is called to do the relativly long sleep waits from within the
* main power_thread loop while at the same time servicing any other periodic
* functions in the power thread which need to be called at a faster periodic
* rate than the slow periodic rate of the main power_thread loop
*/
static void power_thread_sleep(int ticks)
{
while (ticks > 0) {
int small_ticks = MIN(HZ/2, ticks);
sleep(small_ticks);
ticks -= small_ticks;
car_adapter_mode_processing();
}
}
/*
* This power thread maintains a history of battery voltage
* and implements a charging algorithm.
@ -389,7 +468,7 @@ static void power_thread(void)
avg += adc_read(ADC_UNREG_POWER);
ok_samples++;
}
sleep(HZ*POWER_AVG_SLEEP);
power_thread_sleep(HZ*POWER_AVG_SLEEP);
}
avg = avg / ((ok_samples) ? ok_samples : spin_samples);
@ -580,7 +659,7 @@ static void power_thread(void)
/* charge the calculated amount of seconds */
charger_enable(true);
sleep(HZ * trickle_sec);
power_thread_sleep(HZ * trickle_sec);
charger_enable(false);
/* trickle charging long enough? */
@ -686,7 +765,7 @@ static void power_thread(void)
i = 60 - POWER_AVG_N * POWER_AVG_SLEEP;
#endif
if (i > 0)
sleep(HZ*(i));
power_thread_sleep(HZ*(i));
handle_auto_poweroff();
}