Hi,
I have two questions about F28335 SCI
First question: I want to use the F28335 SCI FIFO model to send data to PC, but i found that the statement (While (Sciaregs.SCIFFTX.bit.TXFFST! =0);)used to check the FIFO status takes too much time before i write 16 words to the fifo. It is about 800K cpucycles.
I tried a lot and solved the problem by specific a higher Baud rate(38400) at last. But why?
Second question:I write 4 words to SCITXBUF , but I just received 3 or fewer words ,the rest will be received after i write data to SCITCBUF next time.
It seem it a few words are stucke in there , and i have to write something to push them out. what's wrong with it?
Regards
lee