Serial Link with MicroZed and Carrier Card

Hello,

I am fairly new to FPGAs as I have a lot of experience with Arduinos but very little exposure with the FPGA programming process. I have been tasked with using the MicroZed to control 3 devices and they typically communicate with a computer over a serial (RS-232) link. On the computer I use a SunShell application to send python commands to the devices and I want to basically use the MicroZed to connect to this device with a PMOD port and be able to send it commands serially. Can anyone give me any guidance? Is there any way to use the Linux platform that's already on the MicroZed? Thank you

0 Former Member over 12 years ago

The Zynq device on the MicroZed board has two hardware UARTs, one of which is connected to the USB-UART converter connection. You can route the signals from the second UART to the PL (Programmable Logic) section / to Carrier Card connectors using the EMIO connections. You can add as many AXI UartLite or AXI UART 16550 IP blocks as you need in the PL section. If you need RS232 signals to your devices there are several PMOD style RS232 converters that will work with the MicroZed IO Carrier board, these are the first 2 I found:

http://www.em.avnet.com/en-us/design/drc/Pages/Digilent-Pmod-RS232-Serial-Converter-and-Interface.aspx
http://datasheets.maximintegrated.com/en/ds/MAX3232PMB1.pdf

To use them with Linux you will need to modify the device tree dtb file to include your new UARTs.

-Gary
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