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Communication through J18

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  • Filip Slezak 0F Filip Slezak 0

    @Eric-Katzfey No worries, and yes that's it. How would you recommend I communicate with that external Teensy board? Can't seem to find easily accessible pins for that.

    Eric KatzfeyE Online
    Eric KatzfeyE Online
    Eric Katzfey
    ModalAI Team
    wrote on last edited by
    #12

    @Filip-Slezak-0 I would go with that expansion board I pointed out and use UART.

    Filip Slezak 0F 1 Reply Last reply
    0
    • Eric KatzfeyE Eric Katzfey

      @Filip-Slezak-0 I would go with that expansion board I pointed out and use UART.

      Filip Slezak 0F Offline
      Filip Slezak 0F Offline
      Filip Slezak 0
      Contributor
      wrote on last edited by
      #13

      @Eric-Katzfey Sorry for the late reply. Unfortunately, I don't see how that could work for us, we already have the m0078 on there and the J2 goes to the wifi dongle, what am I missing in what you're suggesting?

      Eric KatzfeyE 1 Reply Last reply
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      • Filip Slezak 0F Filip Slezak 0

        @Eric-Katzfey Sorry for the late reply. Unfortunately, I don't see how that could work for us, we already have the m0078 on there and the J2 goes to the wifi dongle, what am I missing in what you're suggesting?

        Eric KatzfeyE Online
        Eric KatzfeyE Online
        Eric Katzfey
        ModalAI Team
        wrote on last edited by
        #14

        @Filip-Slezak-0 The board I am suggesting has USB and UART.

        Filip Slezak 0F 1 Reply Last reply
        0
        • Eric KatzfeyE Eric Katzfey

          @Filip-Slezak-0 The board I am suggesting has USB and UART.

          Filip Slezak 0F Offline
          Filip Slezak 0F Offline
          Filip Slezak 0
          Contributor
          wrote on last edited by
          #15

          @Eric-Katzfey So you're thinking switch out the boards, use the UART for the wifi dongle and communicate over USB with the microcontroller?

          Eric KatzfeyE 1 Reply Last reply
          0
          • Filip Slezak 0F Filip Slezak 0

            @Eric-Katzfey So you're thinking switch out the boards, use the UART for the wifi dongle and communicate over USB with the microcontroller?

            Eric KatzfeyE Online
            Eric KatzfeyE Online
            Eric Katzfey
            ModalAI Team
            wrote on last edited by
            #16

            @Filip-Slezak-0 No, keep using USB for the WiFi dongle and use the UART to communicate with the Teensy.

            Filip Slezak 0F 1 Reply Last reply
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            • Eric KatzfeyE Eric Katzfey

              @Filip-Slezak-0 No, keep using USB for the WiFi dongle and use the UART to communicate with the Teensy.

              Filip Slezak 0F Offline
              Filip Slezak 0F Offline
              Filip Slezak 0
              Contributor
              wrote on last edited by
              #17

              @Eric-Katzfey Got it, this is getting clearer. Is it safe to use the Teensy's 3.3V pins? According to this, the Voxl2 comm pins are at 1.8V even though its GPIOs are at 3.3V https://docs.modalai.com/voxl2-linux-user-guide/#devttyhs1---b2b-connector-uart

              Eric KatzfeyE 1 Reply Last reply
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              • Filip Slezak 0F Filip Slezak 0

                @Eric-Katzfey Got it, this is getting clearer. Is it safe to use the Teensy's 3.3V pins? According to this, the Voxl2 comm pins are at 1.8V even though its GPIOs are at 3.3V https://docs.modalai.com/voxl2-linux-user-guide/#devttyhs1---b2b-connector-uart

                Eric KatzfeyE Online
                Eric KatzfeyE Online
                Eric Katzfey
                ModalAI Team
                wrote on last edited by
                #18

                @Filip-Slezak-0 Yes, should be fine. We use that UART to connect with our external flight core boards that have 3.3V rx / tx.

                Filip Slezak 0F 1 Reply Last reply
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                • Eric KatzfeyE Eric Katzfey

                  @Filip-Slezak-0 Yes, should be fine. We use that UART to connect with our external flight core boards that have 3.3V rx / tx.

                  Filip Slezak 0F Offline
                  Filip Slezak 0F Offline
                  Filip Slezak 0
                  Contributor
                  wrote on last edited by
                  #19

                  @Eric-Katzfey Thanks Eric, got it working easily after that using a classic pyserial script. Great help!

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                  • Filip Slezak 0F Offline
                    Filip Slezak 0F Offline
                    Filip Slezak 0
                    Contributor
                    wrote on last edited by
                    #20

                    @Eric-Katzfey Hi again, can we expose another UART port for programming on the Voxl2?

                    Filip Slezak 0F 1 Reply Last reply
                    0
                    • Filip Slezak 0F Filip Slezak 0

                      @Eric-Katzfey Hi again, can we expose another UART port for programming on the Voxl2?

                      Filip Slezak 0F Offline
                      Filip Slezak 0F Offline
                      Filip Slezak 0
                      Contributor
                      wrote on last edited by
                      #21

                      @Filip-Slezak-0 Thinking about ttyHS2 or ttyHS3 maybe shown here https://docs.modalai.com/voxl2-linux-user-guide/#uarts

                      modaltbM 1 Reply Last reply
                      0
                      • Filip Slezak 0F Filip Slezak 0

                        @Filip-Slezak-0 Thinking about ttyHS2 or ttyHS3 maybe shown here https://docs.modalai.com/voxl2-linux-user-guide/#uarts

                        modaltbM Offline
                        modaltbM Offline
                        modaltb
                        ModalAI Team
                        wrote on last edited by
                        #22

                        @Filip-Slezak-0 please see here: https://docs.modalai.com/voxl2-linux-user-guide/#apps-proc, we have ttySH2/ttyHS3 routed to the B2B connectors, but you need a carrier board to pick them up...

                        For example, ttyHS2 goes to our M0090 - 5G Add-On Board J9 Pins 2/3 (Tx/Rx)

                        9f1f7f3b-71fb-44c2-a032-f2bd1acb538a-image.png

                        Filip Slezak 0F 1 Reply Last reply
                        0
                        • modaltbM modaltb

                          @Filip-Slezak-0 please see here: https://docs.modalai.com/voxl2-linux-user-guide/#apps-proc, we have ttySH2/ttyHS3 routed to the B2B connectors, but you need a carrier board to pick them up...

                          For example, ttyHS2 goes to our M0090 - 5G Add-On Board J9 Pins 2/3 (Tx/Rx)

                          9f1f7f3b-71fb-44c2-a032-f2bd1acb538a-image.png

                          Filip Slezak 0F Offline
                          Filip Slezak 0F Offline
                          Filip Slezak 0
                          Contributor
                          wrote on last edited by
                          #23

                          @modaltb Hey, thanks for the quick reply. Unfortunately, none of these work for us since it seems exposing one port prevents us from accessing another (I also can't find a ref to buy the M0130).

                          We found a workaround by having a USB hub on the m0125 instead of going over the native uart.

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