![]() |
PDK API Guide for J721E
|
A SPI_Transaction data structure is used with SPI_transfer(). It indicates how many SPI_FrameFormat frames are sent and received from the buffers pointed to txBuf and rxBuf. The arg variable is an user-definable argument which gets passed to the SPI_CallbackFxn when the SPI driver is in SPI_MODE_CALLBACK.
Data Fields | |
size_t | count |
uint64_t | txDmaBuf |
uint64_t | rxDmaBuf |
void * | txBuf |
void * | rxBuf |
void * | arg |
SPI_Status | status |
size_t SPI_Transaction::count |
Number of frames for this transaction
uint64_t SPI_Transaction::txDmaBuf |
Pointer to a buffer with data to be transmitted
uint64_t SPI_Transaction::rxDmaBuf |
Pointer to a buffer to receive data
void* SPI_Transaction::txBuf |
Pointer to a buffer with data to be transmitted
void* SPI_Transaction::rxBuf |
Pointer to a buffer to receive data
void* SPI_Transaction::arg |
Argument to be passed to the callback function
SPI_Status SPI_Transaction::status |
Status code set by SPI_transfer