We have upgraded the community system as part of the upgrade a password reset is required for all users before login in.

Using SPI bus with GPIO's as Chip Select

  • Hi I have working half-duplex SPI device from Python following recent patches to the python-SPI code. What are the best-practices/ limitations for using multiple SPI devices with chip-select ? Should I use Onion GPIO's directly as chip select or should I drop in a small mux and use the existing single chip select with the Mux connected to GPIO's to route the CS signal ?

  • administrators

    @Tisham-Dhar assuming you're using the hardware SPI and not bit-banging, I think it would be more straight-forward to use the designated SPI CS1 as the chip select, and then use a mux, with other GPIOs as control signals, to route the CS signal.

    It's very likely possible to use the hardware controller with a GPIO CS signal, but it would likely involve quite a bit more work than the alternative.

    Let me know how it goes!

Log in to reply

Looks like your connection to Community was lost, please wait while we try to reconnect.