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Add ring buffer for uart TX

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This commit is contained in:
Mario Hüttel
2020-02-11 22:49:47 +01:00
parent 14ba09a716
commit 673e651910
6 changed files with 185 additions and 12 deletions
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17
stm-firmware/include/uart/dma-ring-buffer.h
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@@ -14,9 +14,26 @@ struct dma_ring_buffer_to_mem {
size_t element_size;
};
struct dma_ring_buffer_to_periph {
void *src_buffer;
size_t buffer_count;
DMA_Stream_TypeDef *dma;
volatile size_t dma_get_idx_current;
volatile size_t dma_get_idx_future;
volatile size_t sw_put_idx;
uint8_t dma_base_id;
size_t element_size;
};
int dma_ring_buffer_periph_to_mem_initialize(struct dma_ring_buffer_to_mem *dma_buffer, uint8_t base_dma_id, DMA_Stream_TypeDef *dma_stream, size_t buffer_element_count, size_t element_size, void *data_buffer, void *src_reg, uint8_t dma_trigger_channel);
int dma_ring_buffer_periph_to_mem_get_data(struct dma_ring_buffer_to_mem *buff, const void **data_buff, size_t *len);
void dma_ring_buffer_periph_to_mem_stop(struct dma_ring_buffer_to_mem *buff);
int dma_ring_buffer_mem_to_periph_initialize(struct dma_ring_buffer_to_periph *dma_buffer, uint8_t base_dma_id, DMA_Stream_TypeDef *dma_stream, size_t buffer_element_count, size_t element_size, void *data_buffer, uint8_t dma_trigger_channel, void *dest_reg);
int dma_ring_buffer_mem_to_periph_insert_data(struct dma_ring_buffer_to_periph *buff, const void *data_to_insert, size_t count);
void dma_ring_buffer_mem_to_periph_int_callback(struct dma_ring_buffer_to_periph *buff);
void dma_ring_buffer_mem_to_periph_stop(struct dma_ring_buffer_to_periph *buff);
#endif /* __DMA_RING_BUFFER_H__ */

8
stm-firmware/include/uart/uart.h
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@@ -6,7 +6,7 @@
#define UART_RECEIVE_DMA_STREAM DMA2_Stream5
#define UART_SEND_DMA_STREAM
#define UART_SEND_DMA_STREAM DMA2_Stream7
#define UART_PERIPH USART1
#define UART_RCC_MASK RCC_APB2ENR_USART1EN
@@ -42,11 +42,11 @@ void uart_send_char(char c);
void uart_send_array(const char *data, uint32_t len);
void uart_send_string(char *string);
void uart_send_string(const char *string);
void uart_send_array_with_dma(char *data, uint32_t len);
void uart_send_array_with_dma(const char *data, uint32_t len);
void uart_send_string_with_dma(char *string);
void uart_send_string_with_dma(const char *string);
int uart_receive_data_with_dma(const char **data, size_t *len);