Compiler: F28075 SPI

Hi Yuanfu Qin,

INT_FLAG is a read only flags. It is cleared when you read the RXBUF register. If you see INT_FLAG as 1 that means there is some Rx data available in the Rx buffer (RXBUF register)

Regards,
Veena

yuanfu,

Are you still facing this issue? Are you using the SPI FIFO? If so, be aware that the SPI_INT flag is not valid when the FIFO is enabled. Use the RXFFSTS bits to determine if there is data available to be read.

-Mark

I haven't solved this problem yet. The current approach is to delay 20 US each time a byte is sent.

i didn't send it with FIFO. Thank you for your answer.

Yuanfu,

Can you share a snippet of your SPI read function? Have you referred to the SPI examples in C2000ware? Reading SPIRXBUF should clear the INT_FLG. Is the overflow flag set?

-Mark

Yuanfu,

If you can describe, what you are trying to do, what debug steps you have tried, and your understanding of how it should work, I can be more effective in helping you resolve this.

-Mark