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RTOS/LAUNCHXL-CC1310: What is the maximum data length for a SPI_Transfer function?

Brian_Martin
Prodigy 220 points
Part Number: LAUNCHXL-CC1310
Other Parts Discussed in Thread: CC1310

Tool/software: TI-RTOS

Hi team,

I used CC1310 as the spi master and tried to send 2048 Bytes to a spi slave. But the data returned was wrong.

If i change the spiTransaction.count to 1000, the procedure works fine.

I noticed the data type of count was  __SIZE_T_TYPE__. Is it 4 bytes long?

If so, the spi should transfer more than 2048 number of bytes.

The question is, what is the maximum data length for one time SPI Transfer?

Thank you.