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USB can be used, but it needs a lot of software that has to work perfectly before you can transfer data. Doing a physical UART with UART to USB converter is much easier. USB IP also uses much more FPGA resources than a UART if that is an issue.
If you want your project to be about getting USB working, then go for it. If you have something else in mind, use a UART.
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Hi Galfonz,
I got a Pmod USB to UART module in order to transfer the data. I'm connecting the module to the GPIO pins present in the board. I've assigned one pin of the GPIO to Vcc which is connected to the Vcc pin of the pmod module and explicitly mapped 2nd pin of the GPIO to 0 in my code. Also in Qsys I incorporated an UART core and mapped the rxd and txd of the UART core to the other two pins of GPIO in my code which are connected to RXD and TXD pins of the pmod module respectively physically. I have not mentioned any pins explicitly for these in the pin planner. When I'm connecting the pmod module to my system it's showing USB Serial Port( COM5 ) but data transfer is not possible still. Do I need to explicitly mention the pins of the GPIO in the pin planner which are connected to RXD and TXD of the pmod module ?
Thanks,
Swarnava Pramanik.
Honored Contributor
