Kinetis SDK v.2.0 API Reference Manual
Rev. 0
Freescale Semiconductor, Inc.
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Files | |
file | fsl_lpuart_dma.h |
Data Structures | |
struct | lpuart_dma_handle_t |
LPUART DMA handle. More... | |
Typedefs | |
typedef void(* | lpuart_dma_transfer_callback_t )(LPUART_Type *base, lpuart_dma_handle_t *handle, status_t status, void *userData) |
LPUART transfer callback function. More... | |
EDMA transactional | |
void | LPUART_TransferCreateHandleDMA (LPUART_Type *base, lpuart_dma_handle_t *handle, lpuart_dma_transfer_callback_t callback, void *userData, dma_handle_t *txDmaHandle, dma_handle_t *rxDmaHandle) |
Initializes the LPUART handle which is used in transactional functions. More... | |
status_t | LPUART_TransferSendDMA (LPUART_Type *base, lpuart_dma_handle_t *handle, lpuart_transfer_t *xfer) |
Sends data using DMA. More... | |
status_t | LPUART_TransferReceiveDMA (LPUART_Type *base, lpuart_dma_handle_t *handle, lpuart_transfer_t *xfer) |
Receives data using DMA. More... | |
void | LPUART_TransferAbortSendDMA (LPUART_Type *base, lpuart_dma_handle_t *handle) |
Aborts the sent data using DMA. More... | |
void | LPUART_TransferAbortReceiveDMA (LPUART_Type *base, lpuart_dma_handle_t *handle) |
Aborts the received data using DMA. More... | |
status_t | LPUART_TransferGetSendCountDMA (LPUART_Type *base, lpuart_dma_handle_t *handle, uint32_t *count) |
Get the number of bytes that have been written to LPUART TX register. More... | |
status_t | LPUART_TransferGetReceiveCountDMA (LPUART_Type *base, lpuart_dma_handle_t *handle, uint32_t *count) |
Get the number of bytes that have been received. More... | |
struct _lpuart_dma_handle |
Data Fields | |
lpuart_dma_transfer_callback_t | callback |
Callback function. More... | |
void * | userData |
LPUART callback function parameter. More... | |
size_t | rxDataSizeAll |
Size of the data to receive. More... | |
size_t | txDataSizeAll |
Size of the data to send out. More... | |
dma_handle_t * | txDmaHandle |
The DMA TX channel used. More... | |
dma_handle_t * | rxDmaHandle |
The DMA RX channel used. More... | |
volatile uint8_t | txState |
TX transfer state. More... | |
volatile uint8_t | rxState |
RX transfer state. | |
lpuart_dma_transfer_callback_t lpuart_dma_handle_t::callback |
void* lpuart_dma_handle_t::userData |
size_t lpuart_dma_handle_t::rxDataSizeAll |
size_t lpuart_dma_handle_t::txDataSizeAll |
dma_handle_t* lpuart_dma_handle_t::txDmaHandle |
dma_handle_t* lpuart_dma_handle_t::rxDmaHandle |
volatile uint8_t lpuart_dma_handle_t::txState |
typedef void(* lpuart_dma_transfer_callback_t)(LPUART_Type *base, lpuart_dma_handle_t *handle, status_t status, void *userData) |
void LPUART_TransferCreateHandleDMA | ( | LPUART_Type * | base, |
lpuart_dma_handle_t * | handle, | ||
lpuart_dma_transfer_callback_t | callback, | ||
void * | userData, | ||
dma_handle_t * | txDmaHandle, | ||
dma_handle_t * | rxDmaHandle | ||
) |
base | LPUART peripheral base address. |
handle | Pointer to lpuart_dma_handle_t structure. |
callback | Callback function. |
userData | User data. |
txDmaHandle | User-requested DMA handle for TX DMA transfer. |
rxDmaHandle | User-requested DMA handle for RX DMA transfer. |
status_t LPUART_TransferSendDMA | ( | LPUART_Type * | base, |
lpuart_dma_handle_t * | handle, | ||
lpuart_transfer_t * | xfer | ||
) |
This function sends data using DMA. This is a non-blocking function, which returns right away. When all data is sent, the send callback function is called.
base | LPUART peripheral base address. |
handle | LPUART handle pointer. |
xfer | LPUART DMA transfer structure. See lpuart_transfer_t. |
kStatus_Success | if succeed, others failed. |
kStatus_LPUART_TxBusy | Previous transfer on going. |
kStatus_InvalidArgument | Invalid argument. |
status_t LPUART_TransferReceiveDMA | ( | LPUART_Type * | base, |
lpuart_dma_handle_t * | handle, | ||
lpuart_transfer_t * | xfer | ||
) |
This function receives data using DMA. This is a non-blocking function, which returns right away. When all data is received, the receive callback function is called.
base | LPUART peripheral base address. |
handle | Pointer to lpuart_dma_handle_t structure. |
xfer | LPUART DMA transfer structure. See lpuart_transfer_t. |
kStatus_Success | if succeed, others failed. |
kStatus_LPUART_RxBusy | Previous transfer on going. |
kStatus_InvalidArgument | Invalid argument. |
void LPUART_TransferAbortSendDMA | ( | LPUART_Type * | base, |
lpuart_dma_handle_t * | handle | ||
) |
This function aborts send data using DMA.
base | LPUART peripheral base address |
handle | Pointer to lpuart_dma_handle_t structure |
void LPUART_TransferAbortReceiveDMA | ( | LPUART_Type * | base, |
lpuart_dma_handle_t * | handle | ||
) |
This function aborts the received data using DMA.
base | LPUART peripheral base address |
handle | Pointer to lpuart_dma_handle_t structure |
status_t LPUART_TransferGetSendCountDMA | ( | LPUART_Type * | base, |
lpuart_dma_handle_t * | handle, | ||
uint32_t * | count | ||
) |
This function gets the number of bytes that have been written to LPUART TX register by DMA.
base | LPUART peripheral base address. |
handle | LPUART handle pointer. |
count | Send bytes count. |
kStatus_NoTransferInProgress | No send in progress. |
kStatus_InvalidArgument | Parameter is invalid. |
kStatus_Success | Get successfully through the parameter count ; |
status_t LPUART_TransferGetReceiveCountDMA | ( | LPUART_Type * | base, |
lpuart_dma_handle_t * | handle, | ||
uint32_t * | count | ||
) |
This function gets the number of bytes that have been received.
base | LPUART peripheral base address. |
handle | LPUART handle pointer. |
count | Receive bytes count. |
kStatus_NoTransferInProgress | No receive in progress. |
kStatus_InvalidArgument | Parameter is invalid. |
kStatus_Success | Get successfully through the parameter count ; |