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    PDK API Guide for J721E
    
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A SPI_Transaction data structure is used with OSPI_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 | 
| void * | txBuf | 
| void * | rxBuf | 
| void * | arg | 
| OSPI_Status | status | 
| size_t OSPI_Transaction::count | 
Number of frames for this transaction
| void* OSPI_Transaction::txBuf | 
void * to a buffer with data to be transmitted
| void* OSPI_Transaction::rxBuf | 
void * to a buffer to receive data
| void* OSPI_Transaction::arg | 
Argument to be passed to the callback function
| OSPI_Status OSPI_Transaction::status | 
Status code set by SPI_transfer