#ifndef __DMA_RING_BUFFER_H__
#define __DMA_RING_BUFFER_H__

#include <stdbool.h>
#include <stm32/stm32f4xx.h>
#include <stddef.h>

struct dma_ring_buffer_to_mem {
	void *data_ptr;
	size_t buffer_count;
	DMA_Stream_TypeDef *dma;
	size_t get_idx;
	uint8_t base_dma_id;
	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__ */