Nano - Stuck on SPI test, Jetson-io.py doesn't work still

[ShaneCCC]

For unable run jetson-io module please reference to below topic to modify device tree to enable SPI.

About using spi on Jetson NANO

Hello, I can see the spi node. [image] Codes that open and access spi are also executed normally. [image] However, I can’t check the waveform change with the oscilloscope. What’s the problem? Thank you.