I am using a modified spidev_test.c that transfers 31 two-byte messages without a delay. With the same code, I built binaries, one for raspberry pi 4B and the other for Jetson Xavier NX. Both can read the data correctly. But the interval of message is very different: Output from PI [image] …

I found this problem comes from the context switching time of Linux. So I decided to use the SPI hardware delay that spi-tegra114 kernel driver supports. Thank you.

Slow and irregular SPI communication in Jetson Xavier NX developer kit

Robotics & Edge Computing Jetson & Embedded Systems Jetson Xavier NX

kayccc February 7, 2023, 6:27am 13

Sorry for the late response, is this still an issue to support? Thanks

Orin spi transfer interval 20ms

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Slow and irregular SPI communication in Jetson Xavier NX developer kit

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