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General Discussion / Re: Problem communicating PC and FPGA with UM245R
« on: March 13, 2021, 10:43:01 PM »
Hi, thanks for the reply. I have been using the TN 167 FIFO Basics, in fact, I used its FT_Write and FT_Read examples for my project. I think I narrowed a little bit more my problem, I got an osciloscope and design my example to transmit byte per byte one way (PC-FPGA) or the other (FPGA-PC) in order to see the states of RXF and TXE flags, and they do not behave as expected and as the datasheet and the TN 167 say. The TXE flag is always high (and even with this state there is transmision of data, I do not know how) and in the other example project the RXF flag is always low and the data is transmitted under this conditions. When the change of state occurs (a low for TXE or a high for RXF) the transmision stops inmediately, being impossible to re-startit. I would like to say that I configured the transmision of each byte for these examples every 1 second, so I could be able to see the change of states of both signals. The problem is still there, I do not know why.