Kinetis SDK v.2.0 API Reference Manual
Rev. 0
Freescale Semiconductor, Inc.
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Files | |
file | fsl_flexcan_edma.h |
Data Structures | |
struct | flexcan_edma_handle_t |
FlexCAN eDMA handle. More... | |
Typedefs | |
typedef void(* | flexcan_edma_transfer_callback_t )(CAN_Type *base, flexcan_edma_handle_t *handle, status_t status, void *userData) |
FlexCAN transfer callback function. More... | |
eDMA transactional | |
void | FLEXCAN_TransferCreateHandleEDMA (CAN_Type *base, flexcan_edma_handle_t *handle, flexcan_edma_transfer_callback_t callback, void *userData, edma_handle_t *rxFifoEdmaHandle) |
Initializes the FlexCAN handle, which is used in transactional functions. More... | |
status_t | FLEXCAN_TransferReceiveFifoEDMA (CAN_Type *base, flexcan_edma_handle_t *handle, flexcan_fifo_transfer_t *xfer) |
Receives the CAN Message from the Rx FIFO using eDMA. More... | |
void | FLEXCAN_TransferAbortReceiveFifoEDMA (CAN_Type *base, flexcan_edma_handle_t *handle) |
Aborts the receive process which used eDMA. More... | |
struct _flexcan_edma_handle |
Data Fields | |
flexcan_edma_transfer_callback_t | callback |
Callback function. More... | |
void * | userData |
FlexCAN callback function parameter. More... | |
edma_handle_t * | rxFifoEdmaHandle |
The EDMA Rx FIFO channel used. More... | |
volatile uint8_t | rxFifoState |
Rx FIFO transfer state. More... | |
flexcan_edma_transfer_callback_t flexcan_edma_handle_t::callback |
void* flexcan_edma_handle_t::userData |
edma_handle_t* flexcan_edma_handle_t::rxFifoEdmaHandle |
volatile uint8_t flexcan_edma_handle_t::rxFifoState |
typedef void(* flexcan_edma_transfer_callback_t)(CAN_Type *base, flexcan_edma_handle_t *handle, status_t status, void *userData) |
void FLEXCAN_TransferCreateHandleEDMA | ( | CAN_Type * | base, |
flexcan_edma_handle_t * | handle, | ||
flexcan_edma_transfer_callback_t | callback, | ||
void * | userData, | ||
edma_handle_t * | rxFifoEdmaHandle | ||
) |
base | FlexCAN peripheral base address. |
handle | Pointer to flexcan_edma_handle_t structure. |
callback | The callback function. |
userData | The parameter of the callback function. |
rxFifoEdmaHandle | User-requested DMA handle for Rx FIFO DMA transfer. |
status_t FLEXCAN_TransferReceiveFifoEDMA | ( | CAN_Type * | base, |
flexcan_edma_handle_t * | handle, | ||
flexcan_fifo_transfer_t * | xfer | ||
) |
This function receives the CAN Message using eDMA. This is a non-blocking function, which returns right away. After the CAN Message is received, the receive callback function is called.
base | FlexCAN peripheral base address. |
handle | Pointer to flexcan_edma_handle_t structure. |
xfer | FlexCAN Rx FIFO EDMA transfer structure, see flexcan_fifo_transfer_t. |
kStatus_Success | if succeed, others failed. |
kStatus_FLEXCAN_RxFifoBusy | Previous transfer ongoing. |
void FLEXCAN_TransferAbortReceiveFifoEDMA | ( | CAN_Type * | base, |
flexcan_edma_handle_t * | handle | ||
) |
This function aborts the receive process which used eDMA.
base | FlexCAN peripheral base address. |
handle | Pointer to flexcan_edma_handle_t structure. |