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pull/11476/head
int_szyk 2019-09-02 10:05:22 +02:00 committed by adbridge
parent aeb15e9cce
commit c423602161
1 changed files with 19 additions and 20 deletions
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25
targets/TARGET_STM/lp_ticker.c
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@ -229,24 +229,24 @@ static void LPTIM1_IRQHandler(void)
if (__HAL_LPTIM_GET_IT_SOURCE(&LptimHandle, LPTIM_IT_CMPOK) != RESET) { if (__HAL_LPTIM_GET_IT_SOURCE(&LptimHandle, LPTIM_IT_CMPOK) != RESET) {
__HAL_LPTIM_CLEAR_FLAG(&LptimHandle, LPTIM_FLAG_CMPOK); __HAL_LPTIM_CLEAR_FLAG(&LptimHandle, LPTIM_FLAG_CMPOK);
lp_cmpok = true; lp_cmpok = true;
if(sleep_manager_locked) { if (sleep_manager_locked) {
sleep_manager_unlock_deep_sleep(); sleep_manager_unlock_deep_sleep();
sleep_manager_locked = false; sleep_manager_locked = false;
} }
if(lp_delayed_prog) { if (lp_delayed_prog) {
if(roll_over_flag) { if (roll_over_flag) {
/* If we were close to the roll over of the ticker counter /* If we were close to the roll over of the ticker counter
* change current tick so it can be compared with buffer. * change current tick so it can be compared with buffer.
* If this event got outdated fire interrupt right now, * If this event got outdated fire interrupt right now,
* else schedule it normally. */ * else schedule it normally. */
if(lp_delayed_counter <= ((lp_ticker_read() + LP_TIMER_SAFE_GUARD + 1) & 0xFFFF)){ if (lp_delayed_counter <= ((lp_ticker_read() + LP_TIMER_SAFE_GUARD + 1) & 0xFFFF)) {
lp_ticker_fire_interrupt(); lp_ticker_fire_interrupt();
} else { } else {
lp_ticker_set_interrupt((lp_delayed_counter - LP_TIMER_SAFE_GUARD - 1) & 0xFFFF); lp_ticker_set_interrupt((lp_delayed_counter - LP_TIMER_SAFE_GUARD - 1) & 0xFFFF);
} }
roll_over_flag = false; roll_over_flag = false;
} else { } else {
if(future_event_flag && (lp_delayed_counter <= lp_ticker_read())) { if (future_event_flag && (lp_delayed_counter <= lp_ticker_read())) {
/* If this event got outdated fire interrupt right now, /* If this event got outdated fire interrupt right now,
* else schedule it normally. */ * else schedule it normally. */
lp_ticker_fire_interrupt(); lp_ticker_fire_interrupt();
@ -301,8 +301,7 @@ void lp_ticker_set_interrupt(timestamp_t timestamp)
/* If this target timestamp is close to the roll over of the ticker counter /* If this target timestamp is close to the roll over of the ticker counter
* and current tick is also close to the roll over, then we are in danger zone.*/ * and current tick is also close to the roll over, then we are in danger zone.*/
if(((0xFFFF - LP_TIMER_SAFE_GUARD < timestamp) || (timestamp < LP_TIMER_SAFE_GUARD)) && (0xFFFA < last_read_counter)) if (((0xFFFF - LP_TIMER_SAFE_GUARD < timestamp) || (timestamp < LP_TIMER_SAFE_GUARD)) && (0xFFFA < last_read_counter)) {
{
roll_over_flag = true; roll_over_flag = true;
/* Change the lp_delayed_counter buffer in that way so the value of (0xFFFF - LP_TIMER_SAFE_GUARD) is equal to 0. /* Change the lp_delayed_counter buffer in that way so the value of (0xFFFF - LP_TIMER_SAFE_GUARD) is equal to 0.
* By doing this it is easy to check if the value of timestamp get outdated by delaying its programming * By doing this it is easy to check if the value of timestamp get outdated by delaying its programming
@ -315,7 +314,7 @@ void lp_ticker_set_interrupt(timestamp_t timestamp)
} else { } else {
roll_over_flag = false; roll_over_flag = false;
/* Check if event was meant to be in the past. */ /* Check if event was meant to be in the past. */
if(lp_delayed_counter >= last_read_counter) { if (lp_delayed_counter >= last_read_counter) {
future_event_flag = true; future_event_flag = true;
} else { } else {
future_event_flag = false; future_event_flag = false;
@ -330,7 +329,7 @@ void lp_ticker_set_interrupt(timestamp_t timestamp)
/* HW is not able to trig a very short term interrupt, that is /* HW is not able to trig a very short term interrupt, that is
* not less than few ticks away (LP_TIMER_SAFE_GUARD). So let's make sure it' * not less than few ticks away (LP_TIMER_SAFE_GUARD). So let's make sure it'
* s at least current tick + LP_TIMER_SAFE_GUARD */ * s at least current tick + LP_TIMER_SAFE_GUARD */
for(uint8_t i = 0; i < LP_TIMER_SAFE_GUARD; i++) { for (uint8_t i = 0; i < LP_TIMER_SAFE_GUARD; i++) {
if (LP_TIMER_WRAP((last_read_counter + i)) == timestamp) { if (LP_TIMER_WRAP((last_read_counter + i)) == timestamp) {
timestamp = LP_TIMER_WRAP((timestamp + LP_TIMER_SAFE_GUARD)); timestamp = LP_TIMER_WRAP((timestamp + LP_TIMER_SAFE_GUARD));
} }
@ -347,7 +346,7 @@ void lp_ticker_set_interrupt(timestamp_t timestamp)
* There might be crossing cases where it would also fire @ 0xFFFE, but by the time we read the counter, * There might be crossing cases where it would also fire @ 0xFFFE, but by the time we read the counter,
* it may already have moved to the next one, so for now we've taken this as margin of error. * it may already have moved to the next one, so for now we've taken this as margin of error.
*/ */
if((timestamp < last_read_counter) && (last_read_counter <= (0xFFFF - LP_TIMER_SAFE_GUARD))) { if ((timestamp < last_read_counter) && (last_read_counter <= (0xFFFF - LP_TIMER_SAFE_GUARD))) {
/* Workaround, because limitation */ /* Workaround, because limitation */
__HAL_LPTIM_COMPARE_SET(&LptimHandle, ~0); __HAL_LPTIM_COMPARE_SET(&LptimHandle, ~0);
} else { } else {
@ -360,7 +359,7 @@ void lp_ticker_set_interrupt(timestamp_t timestamp)
lp_cmpok = false; lp_cmpok = false;
/* Prevent from sleeping after compare register was set as we need CMPOK /* Prevent from sleeping after compare register was set as we need CMPOK
* interrupt to fire (in ~3x30us cycles) before we can safely enter deep sleep mode */ * interrupt to fire (in ~3x30us cycles) before we can safely enter deep sleep mode */
if(!sleep_manager_locked) { if (!sleep_manager_locked) {
sleep_manager_lock_deep_sleep(); sleep_manager_lock_deep_sleep();
sleep_manager_locked = true; sleep_manager_locked = true;
} }
@ -383,14 +382,14 @@ void lp_ticker_disable_interrupt(void)
{ {
core_util_critical_section_enter(); core_util_critical_section_enter();
if(!lp_cmpok) { if (!lp_cmpok) {
while (__HAL_LPTIM_GET_FLAG(&LptimHandle, LPTIM_FLAG_CMPOK) == RESET) { while (__HAL_LPTIM_GET_FLAG(&LptimHandle, LPTIM_FLAG_CMPOK) == RESET) {
} }
__HAL_LPTIM_CLEAR_FLAG(&LptimHandle, LPTIM_FLAG_CMPOK); __HAL_LPTIM_CLEAR_FLAG(&LptimHandle, LPTIM_FLAG_CMPOK);
lp_cmpok = true; lp_cmpok = true;
} }
/* now that CMPOK is set, allow deep sleep again */ /* now that CMPOK is set, allow deep sleep again */
if(sleep_manager_locked) { if (sleep_manager_locked) {
sleep_manager_unlock_deep_sleep(); sleep_manager_unlock_deep_sleep();
sleep_manager_locked = false; sleep_manager_locked = false;
} }