TMS320F280049: The ISR triggered by SPI INT with FIFO function could not be executed after stop at breakpoint

Hi Expert,

Customer meets an issue when uses breakpoint to debug the ISR triggered by SPI INT.

F280049 is slave and receive the data with FIFO, when set a breakpoint in the ISR loop, there occurs SPI receive FIFO overflow, cause

1. the ISR loop could not be triggered again after removing the breakpoint or clearing the FIFO overflow flag
2. the SPI communication is failed.

Could you please suggest how to debug the ISR triggered by SPI INT to avoid influence the SPI communication?

Thanks!

Best Regards

Rayna