FreeBSD and PPS

Discussion in 'UDOO X86' started by Claus, May 14, 2017.

  1. Claus

    Claus New Member

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    Hi,
    my OS is FreeBSD 11, PPS-Kernel on UdooX86. The NMEA-input is ok. over USB.
    How can I use the pps-interrupts from gps-device with UdooX86 ?

    Best regards
    Claus
     
  2. waltervl

    waltervl UDOOer

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  3. Claus

    Claus New Member

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    I have solved this problem with Ubuntu. FreeBSD has no driver for the UdooX86 Braswell GPIO's .
    thanks
    Claus
     
    waltervl likes this.
  4. waltervl

    waltervl UDOOer

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    That is good to hear. you solved it. Can you tell more what you do with your Udoo X86. What is the purpose of the PPS-Interrupts in your application? And why do you need Braswell GPIO?
     
  5. Claus

    Claus New Member

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    Hi,
    now I have my Adafruit GPS-Breakout with Logic Level Converter - BSS138 connected to Braswell. The input for the NEMA-information is on UART/GPIO18,19 and the PPS-input is on GPIO497.With ntpd and gpsd I have now a stratum 1 clock.
     
  6. waltervl

    waltervl UDOOer

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    Ok good, so you did not use a usb GPS.
     
  7. wolffam320

    wolffam320 New Member

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    I have a similar setup with ntpd and gpsd but I am running into an issue getting the GPIO pin (the one connected to the PPS line) to show up as a device in the device tree.

    Did you end up using this program?: https://github.com/flok99/rpi_gpio_ntpd

    I am running Ubuntu 16.04 on the UDOO x86.
     

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