fsl_lpi2c_edma.h

/*
 * Copyright (c) 2015, Freescale Semiconductor, Inc.
 * Copyright 2016-2022 NXP
 * All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */
#ifndef _FSL_LPI2C_EDMA_H_
#define _FSL_LPI2C_EDMA_H_
 
#include "fsl_lpi2c.h"
#include "fsl_edma.h"
 
/*******************************************************************************
 * Definitions
 ******************************************************************************/
 
#define FSL_LPI2C_EDMA_DRIVER_VERSION (MAKE_VERSION(2, 4, 1))
/* Forward declaration of the transfer descriptor and handle typedefs. */
typedef struct _lpi2c_master_edma_handle lpi2c_master_edma_handle_t;
 
typedef void (*lpi2c_master_edma_transfer_callback_t)(LPI2C_Type *base,
                                                      lpi2c_master_edma_handle_t *handle,
                                                      status_t completionStatus,
                                                      void *userData);
 
struct _lpi2c_master_edma_handle
{
    LPI2C_Type *base;                 
    bool isBusy;                      
    uint8_t nbytes;                   
    uint16_t commandBuffer[10];       
    lpi2c_master_transfer_t transfer; 
    lpi2c_master_edma_transfer_callback_t completionCallback; 
    void *userData;                                           
    edma_handle_t *rx;                                        
    edma_handle_t *tx;                                        
    edma_tcd_t tcds[3]; 
};
 
/*******************************************************************************
 * API
 ******************************************************************************/
 
#if defined(__cplusplus)
extern "C" {
#endif
 
 
void LPI2C_MasterCreateEDMAHandle(LPI2C_Type *base,
                                  lpi2c_master_edma_handle_t *handle,
                                  edma_handle_t *rxDmaHandle,
                                  edma_handle_t *txDmaHandle,
                                  lpi2c_master_edma_transfer_callback_t callback,
                                  void *userData);
 
status_t LPI2C_MasterTransferEDMA(LPI2C_Type *base,
                                  lpi2c_master_edma_handle_t *handle,
                                  lpi2c_master_transfer_t *transfer);
 
status_t LPI2C_MasterTransferGetCountEDMA(LPI2C_Type *base, lpi2c_master_edma_handle_t *handle, size_t *count);
 
status_t LPI2C_MasterTransferAbortEDMA(LPI2C_Type *base, lpi2c_master_edma_handle_t *handle);
 
#if defined(__cplusplus)
}
#endif
 
#endif /* _FSL_LPI2C_EDMA_H_ */