diff options
Diffstat (limited to 'os/hal/platforms/STM32/can_lld.h')
| -rw-r--r-- | os/hal/platforms/STM32/can_lld.h | 62 |
1 files changed, 56 insertions, 6 deletions
diff --git a/os/hal/platforms/STM32/can_lld.h b/os/hal/platforms/STM32/can_lld.h index 422249cef..9f54e4cc6 100644 --- a/os/hal/platforms/STM32/can_lld.h +++ b/os/hal/platforms/STM32/can_lld.h @@ -29,11 +29,15 @@ #if CH_HAL_USE_CAN || defined(__DOXYGEN__)
+/*===========================================================================*/
+/* Driver constants. */
+/*===========================================================================*/
+
/**
* @brief This switch defines whether the driver implementation supports
* a low power switch mode with automatic an wakeup feature. */
-#define CAN_SUPPORTS_SLEEP TRUE
+#define CAN_SUPPORTS_SLEEP TRUE
/*===========================================================================*/
/* Driver pre-compile time settings. */
@@ -70,10 +74,6 @@ #endif /* !CAN_SUPPORTS_SLEEP */
/*===========================================================================*/
-/* Driver constants. */
-/*===========================================================================*/
-
-/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
@@ -100,6 +100,39 @@ typedef struct { } CANFrame;
/**
+ * @brief CAN filter.
+ * @note Refer to the STM32 reference manual for info about filters. + */
+typedef struct {
+ /**
+ * @brief Filter mode.
+ * @note This bit represent the CAN_FM1R register bit associated to this
+ * filter (0=mask mode, 1=list mode).
+ */
+ uint32_t cf_mode:1;
+ /**
+ * @brief Filter sclae.
+ * @note This bit represent the CAN_FS1R register bit associated to this
+ * filter (0=16 bits mode, 1=32 bits mode).
+ */
+ uint32_t cf_scale:1;
+ /**
+ * @brief Filter mode.
+ * @note This bit represent the CAN_FFA1R register bit associated to this
+ * filter, must be set to zero in this version of the driver.
+ */
+ uint32_t cf_assignment:1;
+ /**
+ * @brief Filter register 1 (identifier).
+ */
+ uint32_t cf_register1;
+ /**
+ * @brief Filter register 2 (mask/identifier depending on cf_mode=0/1).
+ */
+ uint32_t cf_register2;
+} CANFilter;
+
+/**
* @brief Driver configuration structure.
*/
typedef struct {
@@ -115,6 +148,18 @@ typedef struct { * their status in this field.
*/
uint32_t cc_btr;
+ /**
+ * @brief Number of elements into the filters array.
+ * @note By setting this field to zero a default filter is enabled that
+ * allows all frames, this should be adequate for simple applications. + */
+ uint32_t cc_num;
+ /**
+ * @brief Pointer to an array of @p CANFilter structures.
+ * @note This field can be set to @p NULL if the field @p cc_num is set to
+ * zero. + */
+ const CANFilter *cc_filters;
} CANConfig;
/**
@@ -138,7 +183,12 @@ typedef struct { */
Semaphore cd_rxsem;
/**
- * @brief One or more frames become available. + * @brief One or more frames become available.
+ * @note After broadcasting this event it will not be broadcasted again
+ * until the received frames queue has been completely emptied. It
+ * is <b>not</b> broadcasted for each received frame. It is
+ * responsibility of the application to empty the queue by repeatedly
+ * invoking @p chReceive() when listening to this event. */
EventSource cd_rxfull_event;
/**
|