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
Only if you have a GPS that can deliver 1PPS signal through USB. Most consumer GPS can not. Please read this article, very informative: http://catb.org/gpsd/gpsd-time-service-howto.html
I have solved this problem with Ubuntu. FreeBSD has no driver for the UdooX86 Braswell GPIO's . thanks Claus
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?
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.
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.
