diff options
Diffstat (limited to 'os/hal/ports/NRF51/NRF51822/st_lld.h')
| -rw-r--r-- | os/hal/ports/NRF51/NRF51822/st_lld.h | 137 |
1 files changed, 126 insertions, 11 deletions
diff --git a/os/hal/ports/NRF51/NRF51822/st_lld.h b/os/hal/ports/NRF51/NRF51822/st_lld.h index 2e0672e..ab25dbb 100644 --- a/os/hal/ports/NRF51/NRF51822/st_lld.h +++ b/os/hal/ports/NRF51/NRF51822/st_lld.h @@ -27,6 +27,8 @@ #ifndef _ST_LLD_H_
#define _ST_LLD_H_
+#include "halconf.h"
+
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
@@ -35,10 +37,92 @@ /* Driver pre-compile time settings. */
/*===========================================================================*/
+/**
+ * @brief Use RTC0 to generates system ticks
+ */
+#if !defined(NRF51_ST_USE_RTC0) || defined(__DOXYGEN__)
+#if !defined(SOFTDEVICE_PRESENT)
+#define NRF51_ST_USE_RTC0 TRUE
+#else
+#define NRF51_ST_USE_RTC0 FALSE
+#endif
+#endif
+
+/**
+ * @brief Use RTC1 to generates system ticks
+ */
+#if !defined(NRF51_ST_USE_RTC1) || defined(__DOXYGEN__)
+#if !defined(SOFTDEVICE_PRESENT)
+#define NRF51_ST_USE_RTC1 FALSE
+#else
+#define NRF51_ST_USE_RTC1 TRUE
+#endif
+#endif
+
+/**
+ * @brief Use TIMER0 to generates system ticks
+ */
+#if !defined(NRF51_ST_USE_TIMER0) || defined(__DOXYGEN__)
+#define NRF51_ST_USE_TIMER0 FALSE
+#endif
+
+/**
+ * @brief ST interrupt priority level setting.
+ */
+#if !defined(NRF51_ST_PRIORITY) || defined(__DOXYGEN__)
+#if !defined(SOFTDEVICE_PRESENT)
+#define NRF51_ST_PRIORITY 8
+#else
+#define NRF51_ST_PRIORITY 1
+#endif
+#endif
+
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
+#if OSAL_ST_MODE != OSAL_ST_MODE_NONE
+#if (NRF51_ST_USE_TIMER0 == TRUE) && (NRF51_GPT_USE_TIMER0 == TRUE)
+#error "TIMER0 already used by GPT driver"
+#endif
+
+#if (NRF51_ST_USE_RTC0 == FALSE) && \
+ (NRF51_ST_USE_RTC1 == FALSE) && \
+ (NRF51_ST_USE_TIMER0 == FALSE)
+#error "One clock source is needed, enable one (RTC0, RTC1, or TIMER0)"
+#endif
+
+#if ((NRF51_ST_USE_RTC0 == TRUE ? 1 : 0) + \
+ (NRF51_ST_USE_RTC1 == TRUE ? 1 : 0) + \
+ (NRF51_ST_USE_TIMER0 == TRUE ? 1 : 0)) > 1
+#error "Only one clock source can be used (RTC0, RTC1, or TIMER0)"
+#endif
+
+#if defined(SOFTDEVICE_PRESENT)
+#if NRF51_ST_USE_RTC0 == TRUE
+#error "RTC0 cannot be used for system ticks when SOFTDEVICE present"
+#endif
+
+#if NRF51_ST_USE_TIMER0 == TRUE
+#error "TIMER0 cannot be used for system ticks when SOFTDEVICE present"
+#endif
+
+#if NRF51_ST_PRIORITY != 1
+#error "ST priority must be 1 when SOFTDEVICE present"
+#endif
+
+#endif /* defined(SOFTDEVICE_PRESENT) */
+#endif /* OSAL_ST_MODE != OSAL_ST_MODE_NONE */
+
+#if OSAL_ST_MODE == OSAL_ST_MODE_FREERUNNING
+#if defined(CH_CFG_ST_TIMEDELTA) && (CH_CFG_ST_TIMEDELTA < 5)
+#error "CH_CFG_ST_TIMEDELTA is too low"
+#endif
+#if NRF51_ST_USE_TIMER0 == TRUE
+#error "Freeruning (tick-less) mode not supported with TIMER, use RTC"
+#endif
+#endif /* OSAL_ST_MODE == OSAL_ST_MODE_FREERUNNING */
+
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
@@ -71,8 +155,12 @@ extern "C" { * @notapi
*/
static inline systime_t st_lld_get_counter(void) {
-
- return (systime_t)0;
+#if NRF51_ST_USE_RTC0 == TRUE
+ return (systime_t)NRF_RTC0->COUNTER;
+#endif
+#if NRF51_ST_USE_RTC1 == TRUE
+ return (systime_t)NRF_RTC1->COUNTER;
+#endif
}
/**
@@ -85,8 +173,16 @@ static inline systime_t st_lld_get_counter(void) { * @notapi
*/
static inline void st_lld_start_alarm(systime_t abstime) {
-
- (void)abstime;
+#if NRF51_ST_USE_RTC0 == TRUE
+ NRF_RTC0->CC[0] = abstime;
+ NRF_RTC0->EVENTS_COMPARE[0] = 0;
+ NRF_RTC0->EVTENSET = RTC_EVTENSET_COMPARE0_Msk;
+#endif
+#if NRF51_ST_USE_RTC1 == TRUE
+ NRF_RTC1->CC[0] = abstime;
+ NRF_RTC1->EVENTS_COMPARE[0] = 0;
+ NRF_RTC1->EVTENSET = RTC_EVTENSET_COMPARE0_Msk;
+#endif
}
/**
@@ -95,7 +191,14 @@ static inline void st_lld_start_alarm(systime_t abstime) { * @notapi
*/
static inline void st_lld_stop_alarm(void) {
-
+#if NRF51_ST_USE_RTC0 == TRUE
+ NRF_RTC0->EVTENCLR = RTC_EVTENCLR_COMPARE0_Msk;
+ NRF_RTC0->EVENTS_COMPARE[0] = 0;
+#endif
+#if NRF51_ST_USE_RTC1 == TRUE
+ NRF_RTC1->EVTENCLR = RTC_EVTENCLR_COMPARE0_Msk;
+ NRF_RTC1->EVENTS_COMPARE[0] = 0;
+#endif
}
/**
@@ -106,8 +209,12 @@ static inline void st_lld_stop_alarm(void) { * @notapi
*/
static inline void st_lld_set_alarm(systime_t abstime) {
-
- (void)abstime;
+#if NRF51_ST_USE_RTC0 == TRUE
+ NRF_RTC0->CC[0] = abstime;
+#endif
+#if NRF51_ST_USE_RTC1 == TRUE
+ NRF_RTC1->CC[0] = abstime;
+#endif
}
/**
@@ -118,8 +225,12 @@ static inline void st_lld_set_alarm(systime_t abstime) { * @notapi
*/
static inline systime_t st_lld_get_alarm(void) {
-
- return (systime_t)0;
+#if NRF51_ST_USE_RTC0 == TRUE
+ return (systime_t)NRF_RTC0->CC[0];
+#endif
+#if NRF51_ST_USE_RTC1 == TRUE
+ return (systime_t)NRF_RTC1->CC[0];
+#endif
}
/**
@@ -132,8 +243,12 @@ static inline systime_t st_lld_get_alarm(void) { * @notapi
*/
static inline bool st_lld_is_alarm_active(void) {
-
- return false;
+#if NRF51_ST_USE_RTC0 == TRUE
+ return NRF_RTC0->EVTEN & RTC_EVTEN_COMPARE0_Msk;
+#endif
+#if NRF51_ST_USE_RTC1 == TRUE
+ return NRF_RTC1->EVTEN & RTC_EVTEN_COMPARE0_Msk;
+#endif
}
#endif /* _ST_LLD_H_ */
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