static void I2C_MasterTransferEDMAConfig(I2C_Type *base, i2c_master_edma_handle_t *handle)
{
edma_transfer_config_t transfer_config;
if (handle->transfer.direction == kI2C_Read)
{
transfer_config.srcAddr = (uint32_t)I2C_GetDataRegAddr(base);
transfer_config.destAddr = (uint32_t)(handle->transfer.data);
transfer_config.majorLoopCounts = (handle->transfer.dataSize - 1);
transfer_config.srcTransferSize = kEDMA_TransferSize1Bytes;
transfer_config.srcOffset = 0;
transfer_config.destTransferSize = kEDMA_TransferSize1Bytes;
transfer_config.destOffset = 1;
transfer_config.minorLoopBytes = 1;
}
else
{
transfer_config.srcAddr = (uint32_t)(handle->transfer.data + 1);
transfer_config.destAddr = (uint32_t)I2C_GetDataRegAddr(base);
transfer_config.majorLoopCounts = (handle->transfer.dataSize - 1);
transfer_config.srcTransferSize = kEDMA_TransferSize1Bytes;
transfer_config.srcOffset = 1;
transfer_config.destTransferSize = kEDMA_TransferSize1Bytes;
transfer_config.destOffset = 0;
transfer_config.minorLoopBytes = 1;
}
EDMA_SubmitTransfer(handle->dmaHandle, &transfer_config);
EDMA_StartTransfer(handle->dmaHandle);
}
static void I2C_MasterTransferDMAConfig(I2C_Type *base, i2c_master_dma_handle_t *handle)
{
dma_transfer_config_t transfer_config;
dma_transfer_options_t transfer_options = kDMA_EnableInterrupt;
if (handle->transfer.direction == kI2C_Read)
{
transfer_config.srcAddr = (uint32_t)I2C_GetDataRegAddr(base);
transfer_config.destAddr = (uint32_t)(handle->transfer.data);
transfer_config.transferSize = (handle->transfer.dataSize - 1);
transfer_config.srcSize = kDMA_Transfersize8bits;
transfer_config.enableSrcIncrement = false;
transfer_config.destSize = kDMA_Transfersize8bits;
transfer_config.enableDestIncrement = true;
}
else
{
transfer_config.srcAddr = (uint32_t)(handle->transfer.data + 1);
transfer_config.destAddr = (uint32_t)I2C_GetDataRegAddr(base);
transfer_config.transferSize = (handle->transfer.dataSize - 1);
transfer_config.srcSize = kDMA_Transfersize8bits;
transfer_config.enableSrcIncrement = true;
transfer_config.destSize = kDMA_Transfersize8bits;
transfer_config.enableDestIncrement = false;
}
DMA_SubmitTransfer(handle->dmaHandle, &transfer_config, transfer_options);
DMA_StartTransfer(handle->dmaHandle);
}