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F9 modules: Configure UBX and NMEA input/output per interface (UART1, UART2, USB, I2C, or SPI)

Updated

Overview

u-blox F9 series modules support multiple interfaces (e.g., UART1, UART2, USB, I2C, or SPI). To get UBX and/or NMEA working on a specific interface, you typically need to:

  1. Enable the protocol for that interface (input/output)

  2. Enable the messages you want and set their rate (per interface)

In u-center: View → Generation 9 Configuration View

 

1) Enable UBX/NMEA input and output (CFG-UARTx)

Go to CFG-UART1 or CFG-UART2:

Also, confirm that the UART settings (especially the baud rate) match those of your host.

2) Enable message output and set rates (CFG-MSGOUT)

Go to CFG-MSGOUT. These keys control what messages are sent and how often, per interface. See the picture for example:

CFG-MSGOIJT _12C _SPI LIAR LIAR use o o o o o o o o xo o xo o xo o xo o xo o xo o xo Oxo

Common behavior:

  • 0 = disabled

  • 1 = enabled (1x every nav solution)

  • 5 = enabled (1x every 5th nav solution)

For more information, access the u-blox website here and after choosing the module you would like to obtain information about, scroll down and find the section "documentation & resources" and download the Integration and interface manuals for a more detailed explanation.

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