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xtensa/esp32: Added driver api to reload counter instantly

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This commit is contained in:
Sara Souza 2020-12-24 09:44:59 -03:00 committed by Abdelatif Guettouche
parent c612c068e1
commit 65f39fc0c7
2 changed files with 30 additions and 7 deletions
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35
arch/xtensa/src/esp32/esp32_tim.c
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@ -88,6 +88,7 @@ static int esp32_tim_getcounter(FAR struct esp32_tim_dev_s *dev,
uint64_t *value);
static int esp32_tim_setcounter(FAR struct esp32_tim_dev_s *dev,
uint64_t value);
static int esp32_tim_reload_now(FAR struct esp32_tim_dev_s *dev);
static int esp32_tim_getalarmvalue(FAR struct esp32_tim_dev_s *dev,
uint64_t *value);
static int esp32_tim_setalarmvalue(FAR struct esp32_tim_dev_s *dev,
@ -119,6 +120,7 @@ struct esp32_tim_ops_s esp32_tim_ops =
.setpre = esp32_tim_setpre,
.getconfig = esp32_tim_getconfig,
.setcounter = esp32_tim_setcounter,
.reloadnow = esp32_tim_reload_now,
.getalarmvalue = esp32_tim_getalarmvalue,
.setalarmvalue = esp32_tim_setalarmvalue,
.setalarm = esp32_tim_setalarm,
@ -286,16 +288,13 @@ static int esp32_tim_stop(FAR struct esp32_tim_dev_s *dev)
static int esp32_tim_clear(FAR struct esp32_tim_dev_s *dev)
{
uint32_t clear_value = 0;
uint64_t clear_value = 0;
DEBUGASSERT(dev);
esp32_tim_putreg(dev, TIM_LOAD_LO_OFFSET, clear_value);
esp32_tim_putreg(dev, TIM_LOAD_HI_OFFSET, clear_value);
esp32_tim_setcounter(dev, clear_value);
/* Dummy value to trigger reload the counter with the previous value */
esp32_tim_putreg(dev, TIM_LOAD_OFFSET, BIT(0));
esp32_tim_reload_now(dev);
return OK;
}
@ -503,7 +502,10 @@ static int esp32_tim_getcounter(FAR struct esp32_tim_dev_s *dev,
*
* Description:
* Set the value to be loaded to the counter
* It may be loaded at an alarm or instantly
* If you want the counter to be loaded at an alarm, enable the alarm and
* the auto-reload before.
* I you want the counter to be loaded instantly, call esp32_tim_reload_now
* after.
*
****************************************************************************/
@ -523,6 +525,25 @@ static int esp32_tim_setcounter(FAR struct esp32_tim_dev_s *dev,
return OK;
}
/****************************************************************************
* Name: esp32_tim_reload_now
*
* Description:
* Reloads the counter instantly. May be called after esp32_tim_setcounter.
*
****************************************************************************/
static int esp32_tim_reload_now(FAR struct esp32_tim_dev_s *dev)
{
DEBUGASSERT(dev);
/* Dummy value to trigger reloading */
esp32_tim_putreg(dev, TIM_LOAD_OFFSET, BIT(0));
return OK;
}
/****************************************************************************
* Name: esp32_tim_getalarmvalue
*

2
arch/xtensa/src/esp32/esp32_tim.h
View File

@ -46,6 +46,7 @@
#define ESP32_TIM_GETCONFIG(d, v) ((d)->ops->getconfig(d, v))
#define ESP32_TIM_GETCTR(d, v) ((d)->ops->getcounter(d, v))
#define ESP32_TIM_SETCTR(d, v) ((d)->ops->setcounter(d, v))
#define ESP32_TIM_RLD_NOW(d) ((d)->ops->reloadnow(d))
#define ESP32_TIM_GETALRVL(d, v) ((d)->ops->getalarmvalue(d, v))
#define ESP32_TIM_SETALRVL(d, v) ((d)->ops->setalarmvalue(d, v))
#define ESP32_TIM_SETALRM(d, e) ((d)->ops->setalarm(d, e))
@ -101,6 +102,7 @@ struct esp32_tim_ops_s
CODE int (*getconfig)(FAR struct esp32_tim_dev_s *dev, uint32_t *value);
CODE int (*getcounter)(FAR struct esp32_tim_dev_s *dev, uint64_t *value);
CODE int (*setcounter)(FAR struct esp32_tim_dev_s *dev, uint64_t value);
CODE int (*reloadnow)(FAR struct esp32_tim_dev_s *dev);
CODE int (*getalarmvalue)(FAR struct esp32_tim_dev_s *dev,
uint64_t *value);
CODE int (*setalarmvalue)(FAR struct esp32_tim_dev_s *dev, uint64_t value);