diff options
| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2012-01-04 08:46:11 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2012-01-04 08:46:11 +0000 |
| commit | efa92aaed21cbaa80f4bc88a0ef9bb6bbb7aa3ee (patch) | |
| tree | 8289e84ce53bd72e8ef1637472430286306222ea /os/hal/platforms/STM32L1xx/hal_lld.h | |
| parent | b799bdc5c5874fdcfc0e9c33cde779c774ada73f (diff) | |
| download | ChibiOS-efa92aaed21cbaa80f4bc88a0ef9bb6bbb7aa3ee.tar.gz ChibiOS-efa92aaed21cbaa80f4bc88a0ef9bb6bbb7aa3ee.tar.bz2 ChibiOS-efa92aaed21cbaa80f4bc88a0ef9bb6bbb7aa3ee.zip | |
Realtime counter support in the generic HAL driver and implementations for al STM32 devices, others will follow.
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@3723 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/hal/platforms/STM32L1xx/hal_lld.h')
| -rw-r--r-- | os/hal/platforms/STM32L1xx/hal_lld.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/os/hal/platforms/STM32L1xx/hal_lld.h b/os/hal/platforms/STM32L1xx/hal_lld.h index fce1a80f6..4bbe2fe76 100644 --- a/os/hal/platforms/STM32L1xx/hal_lld.h +++ b/os/hal/platforms/STM32L1xx/hal_lld.h @@ -971,10 +971,43 @@ /* Driver data structures and types. */
/*===========================================================================*/
+/**
+ * @brief Type representing a system clock frequency.
+ */
+typedef uint32_t halclock_t;
+
+/**
+ * @brief Type of the realtime free counter value.
+ */
+typedef uint32_t halrtcnt_t;
+
/*===========================================================================*/
/* Driver macros. */
/*===========================================================================*/
+/**
+ * @brief Returns the current value of the system free running counter.
+ * @note This service is implemented by returning the content of the
+ * DWT_CYCCNT register.
+ *
+ * @return The value of the system free running counter of
+ * type halrtcnt_t.
+ *
+ * @notapi
+ */
+#define hal_lld_get_counter_value() DWT_CYCCNT
+
+/**
+ * @brief Realtime counter frequency.
+ * @note The DWT_CYCCNT register is incremented directly by the system
+ * clock so this function returns STM32_SYSCLK.
+ *
+ * @return The realtime counter frequency of type halclock_t.
+ *
+ * @notapi
+ */
+#define hal_lld_get_counter_frequency() STM32_SYSCLK
+
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
|