I am able to receive data on the USART1 peripheral on the stm32h753-eval board using the character match and RXNE Interrupts. When I configure USART1 peripheral for FIFO mode, I set RXFTCFG to 1/8th in CR3, I enable the FIFOEN in CR1 and the RXFFIE in CR1, I do not enable RXNE. I then send a bunch of data to the USART and I do not see either RXFT or RXFF assert.
If I do enable RXNE then I continuously cycle the interrupt until RDR is read. No where in this this process do I see RXFT/RXFF assert.
I am not clear on what I am missing.
