F2808 SCI RX FIFO timeout ??

have the same problem.

Have to use a timer to call the RX interrupt service routine.

Thats one way of doing it. I currently have set the interrupt threshold to 1. So that SCI will cause an interrupt for a single byte received.

Yeah，new piccolo F2806x also have same issue. so I don't understand why this stupid design cannot be solved now.

you  know, Cortex-M3 series from TI have FIFO timeout functionality,but C2000 doesn't.

Hello all,

I am sorry that I don't understand. If we only need to receive single byte, why do we need FIFO?

If you want a single byte, I think you don't need FIFO. Just set RXINT, no need to set RXFFINT (this what I implemented in my code). Actually, is there any advantage of using FIFO in this case?

Best regards,

Maria

If you only receive a byte every 20ms, no FIFO will have better performance.

But most of the case you will get 10K bytes per second and package length is not fixed. Then FIFO will reduce interrupts and improve performance.

I think you don't use piccolo fifo uart in real case, in order to solve the timeout of fifo, you have to use extra timer to monitor the fifo level, rx fifo and tx fifo need two extra timers.

So I think the fifo in C2000 is not useful in real case.

This is a very serious problem. Am surprised that a product as mature as a C2000 has UART that does not have a time-out when equipped with FIFO. Sorry to bring an old thread up, but any solution other than switching off FIFO or using timer to regularly checking on the FIFO.

Am switching over to C2000 for the 1st time, and got these kind of weak design.