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If I don't want to test RF performance through USB, how can I test NRF9160 performance through an external interface

Now it is the nRF9160 DK. I can test the LTE RF performance by transmitting AT commands through USB, but I also hope that I can also connect the nRF9160 through an external interface ,and how to connect and power the hardware to test the LTE RF performance. Thank you.

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  • Yes, my apologies.

    By default, the UART pins are not routed to the header, but to the debugger, which acts as a UART<->USB bridge.

    To route the pins to the header instead, you need to change the firmware on the board controller. You can use the hello_world sample in Zephyr, and change the routing by adding

    CONFIG_BOARD_PCA10090_UART0_VCOM=n
    CONFIG_BOARD_PCA10090_UART0_ARDUINO=y

    I have attached a hex file with the necessary changes. Flash it to the nRF52840 on the nRF91DK (pca10090), and you should be able to use the external interface.

    uart_header.hex

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