uart_dma.h

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/*                  Atmel Microcontroller Software Support                      */
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/* Copyright (c) 2015, Atmel Corporation                                        */
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/* ---------------------------------------------------------------------------- */
 
#ifndef _UART_DMA_
#define _UART_DMA_
 
/*----------------------------------------------------------------------------
 *        Headers
 *----------------------------------------------------------------------------*/
 
#include "chip.h"
 
/*----------------------------------------------------------------------------
 *        Definitions
 *----------------------------------------------------------------------------*/
 
#define UARTD_ERROR          1
 
#define UARTD_ERROR_LOCK     2
 
 
#ifdef __cplusplus
extern "C" {
#endif
 
/*----------------------------------------------------------------------------
 *        Types
 *----------------------------------------------------------------------------*/
 
#ifdef __rtems__
typedef XdmadTransferCallback UartdCallback;
#else
typedef void (*UartdCallback)(uint8_t, void *);
#endif
 
typedef struct {
    uint8_t *pBuff;
    uint32_t BuffSize;
    uint32_t ChNum;
    UartdCallback callback;
    void *pArgument;
    volatile uint8_t sempaphore;
    /* DMA LLI structure */
    LinkedListDescriporView1    *pLLIview;
    /* DMA transfer type */
    eXdmadProgState dmaProgrammingMode;
    /* DMA LLI size */
    uint16_t dmaBlockSize;
    /* Flag using ring buffer or FiFo*/
    uint8_t dmaRingBuffer;
} UartChannel;
 
typedef struct {
    uint8_t uartId;
    sXdmad *pXdmad;
    Uart *pUartHw;
    UartChannel *pRxChannel;
    UartChannel *pTxChannel;
} UartDma;
 
/*----------------------------------------------------------------------------
 *        Exported functions
 *----------------------------------------------------------------------------*/
 
uint32_t UARTD_Configure(UartDma *pUartd ,
                          uint8_t uartId,
                          uint32_t uartMode,
                          uint32_t baud,
                          uint32_t clk);
 
uint32_t UARTD_EnableTxChannels(UartDma *pUartd, UartChannel *pTxCh);
 
uint32_t UARTD_EnableRxChannels(UartDma *pUartd, UartChannel *pRxCh);
 
uint32_t UARTD_DisableTxChannels(UartDma *pUartd, UartChannel *pTxCh);
 
uint32_t UARTD_DisableRxChannels(UartDma *pUartd, UartChannel *pRxCh);
 
uint32_t UARTD_SendData(UartDma *pUartd);
 
uint32_t UARTD_RcvData(UartDma *pUartd);
 
#ifdef __cplusplus
}
#endif
 
#endif /* #ifndef _UART_DMA_ */