ublox_modm_example

This repository contains a rudimentary modm c++ example driver for the ZED-f9P.

How can I configure the ublox ZED-F9P?

• https://github.com/DroidDrive/ublox_gnss_testbench

How do I use it?

• git submoduel update --init --recursive
• lbuild build
• scons
• connect nucleo-f439zi developer board
• connect ublox ZED-F9P
• scons program

How do I connect the nucleo board?

Connect the following things

• GNSS Antenna on the ZED-F9P
• VCC 5V between ZED-F9P & Nucelo
• VCC 3.3V between ZED-F9P & Nucelo
• GND between ZED-F9P & Nucelo
• UART between ZED-F9P & Nucelo
  • Zed-F9P[RX/MOSI] <---> NucleoF439Zi[CP9, Pin D53 - which is connected to STM32 Pin PD5] [see here]
  • Zed-F9P[TX/MISO] <---> NucleoF439Zi[CP9, Pin D52 - which is connected to STM32 Pin PD6] [see here]

Some more important things?

• the ZED-F9P's default configuration only allows the device to send NMEA messaged via UART1 with a baudrate of 38400
• the ZED-F9P's default configuration only allows the device to send NMEA messaged via USB with a baudrate of 9600 (which is used by the u-center tool in our testbench)
• the driver is waiting for UBXmessages, which are not configured to be outputted by the ZED-F9P, so one has to configure the ZED-f9P first via u-center and enable the required UBX messages