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Altera_Forum's avatar
Altera_Forum
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13 years ago

GPS Parcer

Hello All,

I am currently working on getting GPS data from my receiver to the FPGA and displaying the sentences using Eclipse. I have done this in the past using NIOS without any issues, however when I tried to do this again, I am running into garbled sentences. Here are some specifics:

  • I am using the RS-232 as my serial device input/output

  • I have a GPS that runs at 9600 baud with one stop bit, 8 bits of data and no parity

  • I have correctly instantiated the RS-232 device within my top level compiled and ran.

  • I have generated the NIOS design with the following warning...

  • warning: system: "no matching role found for uart_rs232:s1:dataavailable (dataavailable)"

  • Eclipse compiles everthing fine, however the data I get back is something like this: >&nÊònÊ2¹NJÒnÊãònÊynÒ>Ê

  • The data does come every second as expected

Any help with this would be appreciated.

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    12 years ago

    As an addition to my work, I have tried using various baud rates with the same result. I am currently trying to write my own interface and see if that might work. I am using a DE2-115 with Quartus II 11.1.