Jetson Nano SPI reporting 0's on Loopback

Autonomous Machines Jetson & Embedded Systems Jetson Nano
1

Jetpack Version: 4.6.1
4GB Version

Hey all,

I have been trying to get an SPI LED driver running on the Jetson Nano and after testing I have realized that even with SPI1 MOSI (19) and SPI1 MISO (21) shorted and running the spidev_test loopback test it receives all 0s

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I have configured the pinmux through jetson-io.py and even tried to manually configure the GPIO through the device tree and I still can’t get it to work.

Appreciate any help!

3

Hi jwilt9000,

Are you using the devkit or custom board for Jetson Nano?
eMMC or SD module?

Have you referred to the following thread to verify SPI loopback test?
Jetson Nano SPI Bus Not Working - #10 by KevinFFF

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