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Forum not able to read UART port using putty
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  • Replies 14 replies
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  • zynq
  • ultra96
  • Path Programmable III
Related

not able to read UART port using putty

manojroy123
manojroy123 over 2 years ago

the usb to JTAG/UART pod is not able to read UART port using puTTY terminal. Not able to figure out what is going on.

image

can anyone help me in solving this problem. the board I am using is Ultra96-v2

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  • manojroy123
    manojroy123 over 2 years ago +2
    The puTTY problem was solved by letting Ultra96 boot run in SD card mode with Linux install in it. After that the puTTY terminal was picking data from UART port of Ultra96-v2 development board.
  • manojroy123
    manojroy123 over 2 years ago in reply to javagoza +1
    thanks for the help puTTY serial port problem was solved
Parents
  • javagoza
    javagoza over 2 years ago

    It is very strange though that a USB device appears to you as COM3 or COM4. Can you put two screenshots of the Ports (COM & LPT) section of your Device Manager with the device connected by USB and with the device disconnected?
    Also set the speed to 115000 bauds instead of 9600 bauds

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  • manojroy123
    manojroy123 over 2 years ago in reply to javagoza

    the speed is set to 115200 bauds

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  • javagoza
    javagoza over 2 years ago in reply to manojroy123

    With the usb plugged try to uninstall the device,

    image

    Then, once uninstalled plug the USB cable in another USB port

    I think you don't need to install any drivers for the FTDI USB-to-UART bridge

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  • manojroy123
    manojroy123 over 2 years ago in reply to javagoza

    only get one data bit as shown in image bellowimage

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  • javagoza
    javagoza over 2 years ago in reply to manojroy123

    Press reset on the board and if you still see strange characters review PuTTY Configuration for com4 as suggested  Gough Lui

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  • javagoza
    javagoza over 2 years ago in reply to javagoza

    If you are testing with putty and the JTAG selected your are not going to see anything until you program the board I think

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  • manojroy123
    manojroy123 over 2 years ago in reply to javagoza

    please check the bellow video. In it, they have shown that you can access UART in JTAG boot mode via puTTY terminal. The SD card already has linux install in it.

    You don't have permission to edit metadata of this video.
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    image

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  • javagoza
    javagoza over 2 years ago in reply to manojroy123

    Yes, what I say is if you haven´t programmed anything that sends data through the uart you  are no going to see anything

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  • javagoza
    javagoza over 2 years ago in reply to javagoza

    Vitis has a built in serial terminal included in its Debug view. Close any putty windows and from Vitis using the search field look for Serial Terminal, create a new one and adjust com and baud rate.

    Then try to program your board.

    In my case I have problems with JTAG if I have connected my Digilent Analog Discovery II that has an Spartan 6. I have always need to disconnect it before programming the minized.

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  • javagoza
    javagoza over 2 years ago in reply to javagoza

    Vitis has a built in serial terminal included in its Debug view. Close any putty windows and from Vitis using the search field look for Serial Terminal, create a new one and adjust com and baud rate.

    Then try to program your board.

    In my case I have problems with JTAG if I have connected my Digilent Analog Discovery II that has an Spartan 6. I have always need to disconnect it before programming the minized.

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  • manojroy123
    manojroy123 over 2 years ago in reply to javagoza

    thanks for the help puTTY serial port problem was solved

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