Some serious wrong with my odrive about SPI read AS5047P encoder

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1

My odrive can’t get valid angle data from AS5047P witch SPI bus. Then, I disconnect SPI wire, and capture the wave with logic analyzer and find this:

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It shouldn’t change the level about MISO, but there arm noise. What’s wrong with the Odrive or my board? Anyone help me, thank you very much.

2

You can try putting resistors (any value between 10 and 100 ohm) in line with the SPI wires, or updating the firmware. There is a fix for this - the SPI pins are configured in “Very fast” (100MHz) mode, but they should be in “fast” (10MHz) mode to avoid this noise.

3

Where can I find the fixed firmware?

  • for me I also noticed that the 3,3V to GND measured at the AS5047P encoder and at the ODrive is only 2,32V. Seems weird to me …