Typedefs
typedef struct _lpuart_edma_private_handle	lpuart_edma_private_handle_t

Enumerations
enum	_lpuart_edma_tansfer_states { kLPUART_TxIdle , kLPUART_TxBusy , kLPUART_RxIdle , kLPUART_RxBusy }

Functions
static void	LPUART_SendEDMACallback (edma_handle_t handle, void param, bool transferDone, uint32_t tcds)
	LPUART EDMA send finished callback function.

static void	LPUART_ReceiveEDMACallback (edma_handle_t handle, void param, bool transferDone, uint32_t tcds)
	LPUART EDMA receive finished callback function.

void	LPUART_TransferCreateHandleEDMA (LPUART_Type base, lpuart_edma_handle_t handle, lpuart_edma_transfer_callback_t callback, void userData, edma_handle_t txEdmaHandle, edma_handle_t *rxEdmaHandle)
	Initializes the LPUART handle which is used in transactional functions.

status_t	LPUART_SendEDMA (LPUART_Type base, lpuart_edma_handle_t handle, lpuart_transfer_t *xfer)
	Sends data using eDMA.

status_t	LPUART_ReceiveEDMA (LPUART_Type base, lpuart_edma_handle_t handle, lpuart_transfer_t *xfer)
	Receives data using eDMA.

void	LPUART_TransferAbortSendEDMA (LPUART_Type base, lpuart_edma_handle_t handle)
	Aborts the sent data using eDMA.

void	LPUART_TransferAbortReceiveEDMA (LPUART_Type base, lpuart_edma_handle_t handle)
	Aborts the received data using eDMA.

status_t	LPUART_TransferGetReceiveCountEDMA (LPUART_Type base, lpuart_edma_handle_t handle, uint32_t *count)
	Gets the number of received bytes.

status_t	LPUART_TransferGetSendCountEDMA (LPUART_Type base, lpuart_edma_handle_t handle, uint32_t *count)
	Gets the number of bytes written to the LPUART TX register.

Variables
static lpuart_edma_private_handle_t	s_edmaPrivateHandle [LPUART_HANDLE_ARRAY_SIZE]

Typedef Documentation

◆ lpuart_edma_private_handle_t

typedef struct _lpuart_edma_private_handle lpuart_edma_private_handle_t

Enumeration Type Documentation

◆ _lpuart_edma_tansfer_states

enum _lpuart_edma_tansfer_states

Enumerator
kLPUART_TxIdle
kLPUART_TxBusy
kLPUART_RxIdle
kLPUART_RxBusy

Definition at line 29 of file fsl_lpuart_edma.c.

{
    kLPUART_TxIdle, /* TX idle. */
    kLPUART_TxBusy, /* TX busy. */
    kLPUART_RxIdle, /* RX idle. */
    kLPUART_RxBusy  /* RX busy. */
};

Function Documentation

◆ LPUART_ReceiveEDMACallback()

static void LPUART_ReceiveEDMACallback	(	edma_handle_t *	handle,
		void *	param,
		bool	transferDone,
		uint32_t	tcds
	)

static

LPUART EDMA receive finished callback function.

This function is called when LPUART EDMA receive finished. It disables the LPUART RX EDMA request and sends kStatus_LPUART_RxIdle to LPUART callback.

Parameters

handle	The EDMA handle.
param	Callback function parameter.

Definition at line 135 of file fsl_lpuart_edma.c.

{
    assert(param);
 
    lpuart_edma_private_handle_t *lpuartPrivateHandle = (lpuart_edma_private_handle_t *)param;
 
    /* Avoid warning for unused parameters. */
    handle = handle;
    tcds = tcds;
 
    if (transferDone)
    {
        /* Disable transfer. */
        LPUART_TransferAbortReceiveEDMA(lpuartPrivateHandle->base, lpuartPrivateHandle->handle);
 
        if (lpuartPrivateHandle->handle->callback)
        {
            lpuartPrivateHandle->handle->callback(lpuartPrivateHandle->base, lpuartPrivateHandle->handle,
                                                  kStatus_LPUART_RxIdle, lpuartPrivateHandle->handle->userData);
        }
    }
}

Referenced by LPUART_TransferCreateHandleEDMA().

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◆ LPUART_SendEDMACallback()

static void LPUART_SendEDMACallback	(	edma_handle_t *	handle,
		void *	param,
		bool	transferDone,
		uint32_t	tcds
	)

static

LPUART EDMA send finished callback function.

This function is called when LPUART EDMA send finished. It disables the LPUART TX EDMA request and sends kStatus_LPUART_TxIdle to LPUART callback.

Parameters

handle	The EDMA handle.
param	Callback function parameter.

Definition at line 113 of file fsl_lpuart_edma.c.

{
    assert(param);
 
    lpuart_edma_private_handle_t *lpuartPrivateHandle = (lpuart_edma_private_handle_t *)param;
 
    /* Avoid the warning for unused variables. */
    handle = handle;
    tcds = tcds;
 
    if (transferDone)
    {
        LPUART_TransferAbortSendEDMA(lpuartPrivateHandle->base, lpuartPrivateHandle->handle);
 
        if (lpuartPrivateHandle->handle->callback)
        {
            lpuartPrivateHandle->handle->callback(lpuartPrivateHandle->base, lpuartPrivateHandle->handle,
                                                  kStatus_LPUART_TxIdle, lpuartPrivateHandle->handle->userData);
        }
    }
}