2 Replies Latest reply on Nov 22, 2019 8:24 AM by gdstew

    Gertboard Compatibility with Raspberry Pi 4b

    raspman_5984

      Is the Gertboard compatible with the Raspberry Pi 4b? It looks like it could be a great add-on.

      Thanks in advance.

        • Re: Gertboard Compatibility with Raspberry Pi 4b
          clem57

          If memory serves me right there were two versions. If we were taking of the later one, it should. But the raspian Os has had several changes that may inhibit some functions possibly.

          • Re: Gertboard Compatibility with Raspberry Pi 4b
            gdstew

            As far as I know you should be able to use a Gertboard with a RPi 4 using a 26 pin ribbon cable connected to the first 26 pins of the GPIO connector like it was

            done when they originally changed over to the 40 pin connector.  There are differences in GPIO register addresses between 256 MB, 512 MB, and 1 GB (?) RAM

            versions of the earlier RPis, and I believe the RPi 4 has different register addresses than all of the previous versions, that will prevent older software from working

            without changing the addresses in the software first. The register addresses should be the same for the RPi 4 regardless of how much RAM it has. There are also

            a few changes on which physical port pins on the different Broadcom SoCs are connected to the GPIO connector so software written for the earlier RPis will need

            to be adjusted to fix that. There are no differences in the physical interface between the two versions of the Gertboard that I am aware of.

             

            I have one each of both versions of the Gertboard and would be interested in finding out if anyone has modified software or a Gertboard library that has kept up

            with these changes.

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