Build-A-Burger
Full Member level 1
I have a UART implemented using VHDL on a Spartan 3E and have the RX going to the TX of a PIC24FJ128. The RX from the PIC goes to the TX of the FPGA. I have the baud rate set right but they don't seem to want to talk to each other. They are both at 3.3v so I'm guessing I need either a current limiting resistor or some kind of driver. The FPGA is putting out a test pattern and I can read it on the scope, as well as the output of the PIC but the RX pins of neither want to read the signal for some reason.