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CC2650MODA: Changing SPI Data Frame to Be Larger than 16 bits & sending MSB instead of LSB first

Alex Beck
Prodigy 30 points
Part Number: CC2650MODA
Other Parts Discussed in Thread: CC2650

I am working with the CC2650MODA and need to communicate with a sensor that requires a data frame on the SPI bus to be 32 bits; however, I only see options on the CC2650 to have the frame be 8 or 16 bits in length before it releases the chip select pin. I need to keep the CS line low to transfer 8 bytes of data. Is this possible or should I use a different GPIO pin to be the CS pin and manually pull it low before the SPI_transfer() call and pull it back high after the SPI_transfer() call? 

Also, the microprocessor is sending the LSB first during the SPI transaction. How do I switch this to be FIFO (i.e. if I want to send the two bytes 0x1234, the chip sends 0x3412 instead of 0x1234). 

Thank you