Are you using the devkit or custom board for Jetson Nano?
What’s your Jetpack release?
You could refer to the following thread to verify SPI loop back test.
Jetson AGX Xavier Developer Kit CAN commmunication error - #8 by KevinFFF
Hello. I use the devkit board for Jetson Nano. Jetpack related information is shown in the following figure. When browsing other posts, I find that the result from executing the following command seems incorrect. The third line result should be 0, but I have already configured spi using Jetson io. py.
Sorry that I shared the wrong instruction for SPI…, which is for CAN bus.
Please refer to the following thread about the loopback test for SPI on Jetson Nano devkit.
Jetson Nano SPI Bus Not Working - #10 by KevinFFF
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