With test, we find that our PYNQ ardunio’s uart could only has 16 bytes,cause the FIFO configuration.
So we search the code in pynq’s dictionary.
And we find a variable XUL_FIFO_SIZE is set to 16.
But the problem is ,the file comment tell us it cann’t be changed, It is a pity. I think it is a important thing.
Could anyone tell me how to configurate it or is it really can’t be changed?"


what is the function of FIFORESET ? IS it a way for us to change it ? How could we use this function in pynq environment?
THank you ,I have try Pynq for a long time. Really learn a lot of things.