twr_dma.h

#ifndef _TWR_DMA_H
#define _TWR_DMA_H
 
#include <twr_common.h>
 
 
 
typedef enum
{
    TWR_DMA_CHANNEL_1 = 0,
 
    TWR_DMA_CHANNEL_2 = 1,
 
    TWR_DMA_CHANNEL_3 = 2,
 
    TWR_DMA_CHANNEL_4 = 3,
 
    TWR_DMA_CHANNEL_5 = 4,
 
    TWR_DMA_CHANNEL_6 = 5,
 
    TWR_DMA_CHANNEL_7 = 6
 
} twr_dma_channel_t;
 
 
typedef enum
{
    TWR_DMA_REQUEST_0 = 0,
 
    TWR_DMA_REQUEST_1 = 1,
 
    TWR_DMA_REQUEST_2 = 2,
 
    TWR_DMA_REQUEST_3 = 3,
 
    TWR_DMA_REQUEST_4 = 4,
 
    TWR_DMA_REQUEST_5 = 5,
 
    TWR_DMA_REQUEST_6 = 6,
 
    TWR_DMA_REQUEST_7 = 7,
 
    TWR_DMA_REQUEST_8 = 8,
 
    TWR_DMA_REQUEST_9 = 9,
 
    TWR_DMA_REQUEST_10 = 10,
 
    TWR_DMA_REQUEST_11 = 11,
 
    TWR_DMA_REQUEST_12 = 12,
 
    TWR_DMA_REQUEST_13 = 13,
 
    TWR_DMA_REQUEST_14 = 14,
 
    TWR_DMA_REQUEST_15 = 15
 
} twr_dma_request_t;
 
 
typedef enum
{
    TWR_DMA_DIRECTION_TO_PERIPHERAL = 0,
 
    TWR_DMA_DIRECTION_TO_RAM = 1
 
} twr_dma_direction_t;
 
 
typedef enum
{
    TWR_DMA_SIZE_1 = 0,
 
    TWR_DMA_SIZE_2 = 1,
 
    TWR_DMA_SIZE_4 = 2
 
} twr_dma_size_t;
 
 
typedef enum
{
    TWR_DMA_MODE_STANDARD = 0,
 
    TWR_DMA_MODE_CIRCULAR = 1
 
} twr_dma_mode_t;
 
 
typedef enum
{
    TWR_DMA_EVENT_ERROR = 0,
 
    TWR_DMA_EVENT_HALF_DONE = 1,
 
    TWR_DMA_EVENT_DONE = 2
 
} twr_dma_event_t;
 
 
typedef enum
{
    TWR_DMA_PRIORITY_LOW = 0,
 
    TWR_DMA_PRIORITY_MEDIUM = 1,
 
    TWR_DMA_PRIORITY_HIGH = 2,
 
    TWR_DMA_PRIORITY_VERY_HIGH = 3
 
} twr_dma_priority_t;
 
 
typedef struct
{
    twr_dma_request_t request;
 
    twr_dma_direction_t direction;
 
    twr_dma_size_t data_size_memory;
 
    twr_dma_size_t data_size_peripheral;
 
    size_t length;
 
    twr_dma_mode_t mode;
 
    void *address_memory;
 
    void *address_peripheral;
 
    twr_dma_priority_t priority;
 
} twr_dma_channel_config_t;
 
 
void twr_dma_init(void);
 
 
void twr_dma_channel_config(twr_dma_channel_t channel, twr_dma_channel_config_t *config);
 
 
void twr_dma_set_event_handler(twr_dma_channel_t channel, void (*event_handler)(twr_dma_channel_t, twr_dma_event_t, void *), void *event_param);
 
 
void twr_dma_channel_run(twr_dma_channel_t channel);
 
 
void twr_dma_channel_stop(twr_dma_channel_t channel);
 
size_t twr_dma_channel_get_length(twr_dma_channel_t channel);
 
 
 
#endif // _TWR_DMA_H