diff --git a/components/drivers/include/ipc/ringbuffer.h b/components/drivers/include/ipc/ringbuffer.h index 71c4801253..7da50225b3 100644 --- a/components/drivers/include/ipc/ringbuffer.h +++ b/components/drivers/include/ipc/ringbuffer.h @@ -5,6 +5,7 @@ * * Change Logs: * Date Author Notes + * 2021-08-14 Jackistang add comments for function interface. */ #ifndef RINGBUFFER_H__ #define RINGBUFFER_H__ @@ -80,6 +81,13 @@ struct rt_ringbuffer* rt_ringbuffer_create(rt_uint16_t length); void rt_ringbuffer_destroy(struct rt_ringbuffer *rb); #endif +/** + * @brief Get the buffer size of the ring buffer object. + * + * @param rb A pointer to the ring buffer object. + * + * @return Buffer size. + */ rt_inline rt_uint16_t rt_ringbuffer_get_size(struct rt_ringbuffer *rb) { RT_ASSERT(rb != RT_NULL); diff --git a/components/drivers/include/ipc/workqueue.h b/components/drivers/include/ipc/workqueue.h index 03904d852e..776709a8ab 100644 --- a/components/drivers/include/ipc/workqueue.h +++ b/components/drivers/include/ipc/workqueue.h @@ -6,6 +6,7 @@ * Change Logs: * Date Author Notes * 2021-08-01 Meco Man remove rt_delayed_work_init() and rt_delayed_work structure + * 2021-08-14 Jackistang add comments for rt_work_init() */ #ifndef WORKQUEUE_H__ #define WORKQUEUE_H__ @@ -67,6 +68,13 @@ rt_err_t rt_work_submit(struct rt_work *work, rt_tick_t time); rt_err_t rt_work_cancel(struct rt_work *work); #endif /* RT_USING_SYSTEM_WORKQUEUE */ +/** + * @brief Initialize a work item, binding with a callback function. + * + * @param work A pointer to the work item object. + * @param work_func A callback function that will be called when this work item is executed. + * @param work_data A user data passed to the callback function as the second parameter. + */ rt_inline void rt_work_init(struct rt_work *work, void (*work_func)(struct rt_work *work, void *work_data), void *work_data) { diff --git a/components/drivers/src/ringbuffer.c b/components/drivers/src/ringbuffer.c index c94d960f44..3e76b1774a 100644 --- a/components/drivers/src/ringbuffer.c +++ b/components/drivers/src/ringbuffer.c @@ -9,6 +9,7 @@ * 2013-05-08 Grissiom reimplement * 2016-08-18 heyuanjie add interface * 2021-07-20 arminker fix write_index bug in function rt_ringbuffer_put_force + * 2021-08-14 Jackistang add comments for function interface. */ #include @@ -27,6 +28,13 @@ rt_inline enum rt_ringbuffer_state rt_ringbuffer_status(struct rt_ringbuffer *rb return RT_RINGBUFFER_HALFFULL; } +/** + * @brief Initialize the ring buffer object. + * + * @param rb A pointer to the ring buffer object. + * @param pool A pointer to the buffer. + * @param size The size of the buffer in bytes. + */ void rt_ringbuffer_init(struct rt_ringbuffer *rb, rt_uint8_t *pool, rt_int16_t size) @@ -45,7 +53,13 @@ void rt_ringbuffer_init(struct rt_ringbuffer *rb, RTM_EXPORT(rt_ringbuffer_init); /** - * put a block of data into ring buffer + * @brief Put a block of data into the ring buffer. If the capacity of ring buffer is insufficient, it will discard out-of-range data. + * + * @param rb A pointer to the ring buffer object. + * @param ptr A pointer to the data buffer. + * @param length The size of data in bytes. + * + * @return Return the data size we put into the ring buffer. */ rt_size_t rt_ringbuffer_put(struct rt_ringbuffer *rb, const rt_uint8_t *ptr, @@ -92,9 +106,13 @@ rt_size_t rt_ringbuffer_put(struct rt_ringbuffer *rb, RTM_EXPORT(rt_ringbuffer_put); /** - * put a block of data into ring buffer + * @brief Put a block of data into the ring buffer. If the capacity of ring buffer is insufficient, it will overwrite the existing data in the ring buffer. * - * When the buffer is full, it will discard the old data. + * @param rb A pointer to the ring buffer object. + * @param ptr A pointer to the data buffer. + * @param length The size of data in bytes. + * + * @return Return the data size we put into the ring buffer. */ rt_size_t rt_ringbuffer_put_force(struct rt_ringbuffer *rb, const rt_uint8_t *ptr, @@ -149,7 +167,13 @@ rt_size_t rt_ringbuffer_put_force(struct rt_ringbuffer *rb, RTM_EXPORT(rt_ringbuffer_put_force); /** - * get data from ring buffer + * @brief Get data from the ring buffer. + * + * @param rb A pointer to the ring buffer. + * @param ptr A pointer to the data buffer. + * @param length The size of the data we want to read from the ring buffer. + * + * @return Return the data size we read from the ring buffer. */ rt_size_t rt_ringbuffer_get(struct rt_ringbuffer *rb, rt_uint8_t *ptr, @@ -196,7 +220,14 @@ rt_size_t rt_ringbuffer_get(struct rt_ringbuffer *rb, RTM_EXPORT(rt_ringbuffer_get); /** - * peak data from ring buffer + * @brief Get the first readable byte of the ring buffer. + * + * @param rb A pointer to the ringbuffer. + * @param ptr When this function return, *ptr is a pointer to the first readable byte of the ring buffer. + * + * @note It is recommended to read only one byte, otherwise it may cause buffer overflow. + * + * @return Return the size of the ring buffer. */ rt_size_t rt_ringbuffer_peak(struct rt_ringbuffer *rb, rt_uint8_t **ptr) { @@ -230,7 +261,12 @@ rt_size_t rt_ringbuffer_peak(struct rt_ringbuffer *rb, rt_uint8_t **ptr) RTM_EXPORT(rt_ringbuffer_peak); /** - * put a character into ring buffer + * @brief Put a byte into the ring buffer. If ring buffer is full, this operation will fail. + * + * @param rb A pointer to the ring buffer object. + * @param ch A byte put into the ring buffer. + * + * @return Return the data size we put into the ring buffer. The ring buffer is full if returns 0. Otherwise, it will return 1. */ rt_size_t rt_ringbuffer_putchar(struct rt_ringbuffer *rb, const rt_uint8_t ch) { @@ -258,9 +294,12 @@ rt_size_t rt_ringbuffer_putchar(struct rt_ringbuffer *rb, const rt_uint8_t ch) RTM_EXPORT(rt_ringbuffer_putchar); /** - * put a character into ring buffer + * @brief Put a byte into the ring buffer. If ring buffer is full, it will discard an old data and put into a new data. * - * When the buffer is full, it will discard one old data. + * @param rb A pointer to the ring buffer object. + * @param ch A byte put into the ring buffer. + * + * @return Return the data size we put into the ring buffer. Always return 1. */ rt_size_t rt_ringbuffer_putchar_force(struct rt_ringbuffer *rb, const rt_uint8_t ch) { @@ -295,7 +334,13 @@ rt_size_t rt_ringbuffer_putchar_force(struct rt_ringbuffer *rb, const rt_uint8_t RTM_EXPORT(rt_ringbuffer_putchar_force); /** - * get a character from a ringbuffer + * @brief Get a byte from the ring buffer. + * + * @param rb The pointer to the ring buffer object. + * @param ch A pointer to the buffer, used to store one byte. + * + * @return 0 The ring buffer is empty. + * @return 1 Success */ rt_size_t rt_ringbuffer_getchar(struct rt_ringbuffer *rb, rt_uint8_t *ch) { @@ -305,7 +350,7 @@ rt_size_t rt_ringbuffer_getchar(struct rt_ringbuffer *rb, rt_uint8_t *ch) if (!rt_ringbuffer_data_len(rb)) return 0; - /* put character */ + /* put byte */ *ch = rb->buffer_ptr[rb->read_index]; if (rb->read_index == rb->buffer_size-1) @@ -323,7 +368,11 @@ rt_size_t rt_ringbuffer_getchar(struct rt_ringbuffer *rb, rt_uint8_t *ch) RTM_EXPORT(rt_ringbuffer_getchar); /** - * get the size of data in rb + * @brief Get the size of data in the ring buffer in bytes. + * + * @param rb The pointer to the ring buffer object. + * + * @return Return the size of data in the ring buffer in bytes. */ rt_size_t rt_ringbuffer_data_len(struct rt_ringbuffer *rb) { @@ -348,7 +397,9 @@ rt_size_t rt_ringbuffer_data_len(struct rt_ringbuffer *rb) RTM_EXPORT(rt_ringbuffer_data_len); /** - * empty the rb + * @brief Reset the ring buffer object, and clear all contents in the buffer. + * + * @param rb A pointer to the ring buffer object. */ void rt_ringbuffer_reset(struct rt_ringbuffer *rb) { @@ -363,7 +414,14 @@ RTM_EXPORT(rt_ringbuffer_reset); #ifdef RT_USING_HEAP -struct rt_ringbuffer* rt_ringbuffer_create(rt_uint16_t size) +/** + * @brief Create a ring buffer object with a given size. + * + * @param size The size of the buffer in bytes. + * + * @return Return a pointer to ring buffer object. When the return value is RT_NULL, it means this creation failed. + */ +struct rt_ringbuffer *rt_ringbuffer_create(rt_uint16_t size) { struct rt_ringbuffer *rb; rt_uint8_t *pool; @@ -390,6 +448,11 @@ exit: } RTM_EXPORT(rt_ringbuffer_create); +/** + * @brief Destroy the ring buffer object, which is created by rt_ringbuffer_create() . + * + * @param rb A pointer to the ring buffer object. + */ void rt_ringbuffer_destroy(struct rt_ringbuffer *rb) { RT_ASSERT(rb != RT_NULL); diff --git a/components/drivers/src/workqueue.c b/components/drivers/src/workqueue.c index 8fcfd52688..b5d803472b 100644 --- a/components/drivers/src/workqueue.c +++ b/components/drivers/src/workqueue.c @@ -7,6 +7,7 @@ * Date Author Notes * 2017-02-27 Bernard fix the re-work issue. * 2021-08-01 Meco Man remove rt_delayed_work_init() + * 2021-08-14 Jackistang add comments for function interface. */ #include @@ -209,6 +210,15 @@ static void _delayed_work_timeout_handler(void *parameter) } } +/** + * @brief Create a work queue with a thread inside. + * + * @param name The name of the work queue thread. + * @param stack_size The stack size of the work queue thread. + * @param priority The priority of the work queue thread. + * + * @return Return A pointer to the workqueue object. It will return RT_NULL if failed. + */ struct rt_workqueue *rt_workqueue_create(const char *name, rt_uint16_t stack_size, rt_uint8_t priority) { struct rt_workqueue *queue = RT_NULL; @@ -236,6 +246,13 @@ struct rt_workqueue *rt_workqueue_create(const char *name, rt_uint16_t stack_siz return queue; } +/** + * @brief Destroy a work queue. + * + * @param queue A pointer to the workqueue object. + * + * @return RT_EOK Success. + */ rt_err_t rt_workqueue_destroy(struct rt_workqueue *queue) { RT_ASSERT(queue != RT_NULL); @@ -248,6 +265,15 @@ rt_err_t rt_workqueue_destroy(struct rt_workqueue *queue) return RT_EOK; } +/** + * @brief Submit a work item to the work queue without delay. + * + * @param queue A pointer to the workqueue object. + * @param work A pointer to the work item object. + * + * @return RT_EOK Success. + * @return -RT_EBUSY This work item is executing. + */ rt_err_t rt_workqueue_dowork(struct rt_workqueue *queue, struct rt_work *work) { RT_ASSERT(queue != RT_NULL); @@ -256,6 +282,17 @@ rt_err_t rt_workqueue_dowork(struct rt_workqueue *queue, struct rt_work *work) return _workqueue_submit_work(queue, work, 0); } +/** + * @brief Submit a work item to the work queue with a delay. + * + * @param queue A pointer to the workqueue object. + * @param work A pointer to the work item object. + * @param time The delay time (unit: OS ticks) for the work item to be submitted to the work queue. + * + * @return RT_EOK Success. + * @return -RT_EBUSY This work item is executing. + * @return -RT_ERROR The time parameter is invalid. + */ rt_err_t rt_workqueue_submit_work(struct rt_workqueue *queue, struct rt_work *work, rt_tick_t time) { RT_ASSERT(queue != RT_NULL); @@ -264,6 +301,14 @@ rt_err_t rt_workqueue_submit_work(struct rt_workqueue *queue, struct rt_work *wo return _workqueue_submit_work(queue, work, time); } +/** + * @brief Submit a work item to the work queue without delay. This work item will be executed after the current work item. + * + * @param queue A pointer to the workqueue object. + * @param work A pointer to the work item object. + * + * @return RT_EOK Success. + */ rt_err_t rt_workqueue_critical_work(struct rt_workqueue *queue, struct rt_work *work) { rt_base_t level; @@ -291,6 +336,15 @@ rt_err_t rt_workqueue_critical_work(struct rt_workqueue *queue, struct rt_work * return RT_EOK; } +/** + * @brief Cancel a work item in the work queue. + * + * @param queue A pointer to the workqueue object. + * @param work A pointer to the work item object. + * + * @return RT_EOK Success. + * @return -RT_EBUSY This work item is executing. + */ rt_err_t rt_workqueue_cancel_work(struct rt_workqueue *queue, struct rt_work *work) { RT_ASSERT(work != RT_NULL); @@ -298,6 +352,14 @@ rt_err_t rt_workqueue_cancel_work(struct rt_workqueue *queue, struct rt_work *wo return _workqueue_cancel_work(queue, work); } +/** + * @brief Cancel a work item in the work queue. If the work item is executing, this function will block until it is done. + * + * @param queue A pointer to the workqueue object. + * @param work A pointer to the work item object. + * + * @return RT_EOK Success. + */ rt_err_t rt_workqueue_cancel_work_sync(struct rt_workqueue *queue, struct rt_work *work) { RT_ASSERT(queue != RT_NULL); @@ -316,6 +378,13 @@ rt_err_t rt_workqueue_cancel_work_sync(struct rt_workqueue *queue, struct rt_wor return RT_EOK; } +/** + * @brief This function will cancel all work items in work queue. + * + * @param queue A pointer to the workqueue object. + * + * @return RT_EOK Success. + */ rt_err_t rt_workqueue_cancel_all_work(struct rt_workqueue *queue) { struct rt_work *work; @@ -343,11 +412,29 @@ rt_err_t rt_workqueue_cancel_all_work(struct rt_workqueue *queue) #ifdef RT_USING_SYSTEM_WORKQUEUE static struct rt_workqueue *sys_workq; +/** + * @brief Submit a work item to the system work queue with a delay. + * + * @param work A pointer to the work item object. + * @param time The delay time (unit: OS ticks) for the work item to be submitted to the work queue. + * + * @return RT_EOK Success. + * @return -RT_EBUSY This work item is executing. + * @return -RT_ERROR The time parameter is invalid. + */ rt_err_t rt_work_submit(struct rt_work *work, rt_tick_t time) { return rt_workqueue_submit_work(sys_workq, work, time); } +/** + * @brief Cancel a work item in the system work queue. + * + * @param work A pointer to the work item object. + * + * @return RT_EOK Success. + * @return -RT_EBUSY This work item is executing. + */ rt_err_t rt_work_cancel(struct rt_work *work) { return rt_workqueue_cancel_work(sys_workq, work);