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Atmega 328p memory

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  • dbemowskD Offline
    dbemowskD Offline
    dbemowsk
    wrote on last edited by
    #18

    So looking at a dev board like this one to test things, one thing that I do not see is any analog inputs. I am also wondering about an I2C connection. I am also assuming that the black connector is the programming header.

    Vera Plus running UI7 with MySensors, Sonoffs and 1-Wire devices
    Visit my website for more Bits, Bytes and Ramblings from me: http://dan.bemowski.info/

    NeverDieN 1 Reply Last reply
    0
    • dbemowskD dbemowsk

      So looking at a dev board like this one to test things, one thing that I do not see is any analog inputs. I am also wondering about an I2C connection. I am also assuming that the black connector is the programming header.

      NeverDieN Offline
      NeverDieN Offline
      NeverDie
      Hero Member
      wrote on last edited by NeverDie
      #19

      @dbemowsk Most of the GPIO pins can be assigned to be whatever you want. For instance, only one pin can serve as RESET (pin 21), but it can be re-assigned to work as an analog pin if you prefer to use it that way. Likewise, pins can be re-assigned to serve as I2C if you prefer that. All this gives you more freedom in the trace layouts. i.e. it's a good thing.

      dbemowskD 1 Reply Last reply
      0
      • NeverDieN NeverDie

        @dbemowsk Most of the GPIO pins can be assigned to be whatever you want. For instance, only one pin can serve as RESET (pin 21), but it can be re-assigned to work as an analog pin if you prefer to use it that way. Likewise, pins can be re-assigned to serve as I2C if you prefer that. All this gives you more freedom in the trace layouts. i.e. it's a good thing.

        dbemowskD Offline
        dbemowskD Offline
        dbemowsk
        wrote on last edited by
        #20

        @neverdie So they are not strictly data lines... That is nice. So what you are saying is that if I wire them to the headers on my board, I can just wire the header pins to the closest GPIO lines and then just reference them to what they are in the sketch. Can any of them be SPI bus lines also?

        Vera Plus running UI7 with MySensors, Sonoffs and 1-Wire devices
        Visit my website for more Bits, Bytes and Ramblings from me: http://dan.bemowski.info/

        NeverDieN 1 Reply Last reply
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        • dbemowskD dbemowsk

          @neverdie So they are not strictly data lines... That is nice. So what you are saying is that if I wire them to the headers on my board, I can just wire the header pins to the closest GPIO lines and then just reference them to what they are in the sketch. Can any of them be SPI bus lines also?

          NeverDieN Offline
          NeverDieN Offline
          NeverDie
          Hero Member
          wrote on last edited by NeverDie
          #21

          @dbemowsk There may be some caveats in the datasheet, but basically yes.

          Good luck!

          1 Reply Last reply
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          • dbemowskD Offline
            dbemowskD Offline
            dbemowsk
            wrote on last edited by
            #22

            I figured I could do my testing with one of the dev boards, and if everything works I can just design a board using one of the surface mount modules. Thanks for all the feedback.

            Vera Plus running UI7 with MySensors, Sonoffs and 1-Wire devices
            Visit my website for more Bits, Bytes and Ramblings from me: http://dan.bemowski.info/

            1 Reply Last reply
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            • NeverDieN Offline
              NeverDieN Offline
              NeverDie
              Hero Member
              wrote on last edited by NeverDie
              #23

              For instance, I would suggest not using the NFC pins if you can avoid it. They can be redefined, but they aren't 100% equivalent to the other pins.

              dbemowskD 1 Reply Last reply
              0
              • NeverDieN NeverDie

                For instance, I would suggest not using the NFC pins if you can avoid it. They can be redefined, but they aren't 100% equivalent to the other pins.

                dbemowskD Offline
                dbemowskD Offline
                dbemowsk
                wrote on last edited by
                #24

                @neverdie With the number of pins, I am sure I can avoid some without a problem.

                Vera Plus running UI7 with MySensors, Sonoffs and 1-Wire devices
                Visit my website for more Bits, Bytes and Ramblings from me: http://dan.bemowski.info/

                NeverDieN 1 Reply Last reply
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                • dbemowskD dbemowsk

                  @neverdie With the number of pins, I am sure I can avoid some without a problem.

                  NeverDieN Offline
                  NeverDieN Offline
                  NeverDie
                  Hero Member
                  wrote on last edited by NeverDie
                  #25

                  @dbemowsk That's the spirit! You'll know soon enough if you step on something you shouldn't.

                  1 Reply Last reply
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                  • dbemowskD Offline
                    dbemowskD Offline
                    dbemowsk
                    wrote on last edited by
                    #26

                    WIth a 32 bit processor, 64kB of ram and 512kB of flash, it should have more than enough speed and space for what I want to do. Heck, I could probably fit some onboard sensors like temp and humidity and possibly power monitoring if I can figure out something with my power supply board.

                    Vera Plus running UI7 with MySensors, Sonoffs and 1-Wire devices
                    Visit my website for more Bits, Bytes and Ramblings from me: http://dan.bemowski.info/

                    NeverDieN 1 Reply Last reply
                    0
                    • dbemowskD dbemowsk

                      WIth a 32 bit processor, 64kB of ram and 512kB of flash, it should have more than enough speed and space for what I want to do. Heck, I could probably fit some onboard sensors like temp and humidity and possibly power monitoring if I can figure out something with my power supply board.

                      NeverDieN Offline
                      NeverDieN Offline
                      NeverDie
                      Hero Member
                      wrote on last edited by NeverDie
                      #27

                      @dbemowsk In practical terms, it's even better than that, because the compiled code is more dense.

                      dbemowskD 1 Reply Last reply
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                      • NeverDieN NeverDie

                        @dbemowsk In practical terms, it's even better than that, because the compiled code is more dense.

                        dbemowskD Offline
                        dbemowskD Offline
                        dbemowsk
                        wrote on last edited by
                        #28

                        @neverdie So with all of this, would I need to upgrade my gateway to 2.1 or 2.2? I am currently on 2.0.

                        Vera Plus running UI7 with MySensors, Sonoffs and 1-Wire devices
                        Visit my website for more Bits, Bytes and Ramblings from me: http://dan.bemowski.info/

                        NeverDieN 1 Reply Last reply
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                        • dbemowskD dbemowsk

                          @neverdie So with all of this, would I need to upgrade my gateway to 2.1 or 2.2? I am currently on 2.0.

                          NeverDieN Offline
                          NeverDieN Offline
                          NeverDie
                          Hero Member
                          wrote on last edited by NeverDie
                          #29

                          @dbemowsk Forget those. You need to run the most current developers release. It's the safest choice. Perhaps there's a more precise answer, but....

                          dbemowskD 1 Reply Last reply
                          0
                          • NeverDieN NeverDie

                            @dbemowsk Forget those. You need to run the most current developers release. It's the safest choice. Perhaps there's a more precise answer, but....

                            dbemowskD Offline
                            dbemowskD Offline
                            dbemowsk
                            wrote on last edited by
                            #30

                            @neverdie I always hate upgrading the gateway because it ends up being, do the upgrade and HOPE everything that I have on my network plays well with it. I usually just pull the old pro mini and save it. Then flash a new one with the updated version. That way if I have to fall back I can.

                            Vera Plus running UI7 with MySensors, Sonoffs and 1-Wire devices
                            Visit my website for more Bits, Bytes and Ramblings from me: http://dan.bemowski.info/

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                            • NeverDieN Offline
                              NeverDieN Offline
                              NeverDie
                              Hero Member
                              wrote on last edited by NeverDie
                              #31

                              Or just set up a parallel network to test on until you're comfortable with it. That's what I do. That way you don't drop the ball with whatever currently works. Hardware is cheaper than your time, and you can recycle it endlessly.

                              dbemowskD 1 Reply Last reply
                              1
                              • NeverDieN NeverDie

                                Or just set up a parallel network to test on until you're comfortable with it. That's what I do. That way you don't drop the ball with whatever currently works. Hardware is cheaper than your time, and you can recycle it endlessly.

                                dbemowskD Offline
                                dbemowskD Offline
                                dbemowsk
                                wrote on last edited by
                                #32

                                @neverdie Great idea. I would just need another FTDI adapter and set up another MySensors instance on my Vera. If I have to order the nRF52, I can order an extra FTDI at the same time. Then I can take my time porting over things to the new gateway and phase out the old one as time and resources permit.

                                Vera Plus running UI7 with MySensors, Sonoffs and 1-Wire devices
                                Visit my website for more Bits, Bytes and Ramblings from me: http://dan.bemowski.info/

                                Nca78N 1 Reply Last reply
                                1
                                • dbemowskD Offline
                                  dbemowskD Offline
                                  dbemowsk
                                  wrote on last edited by
                                  #33

                                  This is why I LOVE this forum....

                                  Vera Plus running UI7 with MySensors, Sonoffs and 1-Wire devices
                                  Visit my website for more Bits, Bytes and Ramblings from me: http://dan.bemowski.info/

                                  1 Reply Last reply
                                  1
                                  • NeverDieN Offline
                                    NeverDieN Offline
                                    NeverDie
                                    Hero Member
                                    wrote on last edited by NeverDie
                                    #34

                                    Since you're the "new guy," be sure to document your progress as best you can. That will help other "new guys" follow in your footsteps. The more new guys the better. That's what I did with the Bluetooth Actiion! thread, even though, ironically, it ended up having nothing to do with bluetooth per se. But who knew? Where you end up isn't always the direction you were heading originally.

                                    dbemowskD 1 Reply Last reply
                                    1
                                    • NeverDieN NeverDie

                                      Since you're the "new guy," be sure to document your progress as best you can. That will help other "new guys" follow in your footsteps. The more new guys the better. That's what I did with the Bluetooth Actiion! thread, even though, ironically, it ended up having nothing to do with bluetooth per se. But who knew? Where you end up isn't always the direction you were heading originally.

                                      dbemowskD Offline
                                      dbemowskD Offline
                                      dbemowsk
                                      wrote on last edited by
                                      #35

                                      @neverdie Well, I am not necessarily new to MySensors, but new to this end of it. I can document and post.....

                                      You know I haven't checked out the bluetooth thread, well, because I thought it was about bluetooth. Looks like I have some reading to do.

                                      Vera Plus running UI7 with MySensors, Sonoffs and 1-Wire devices
                                      Visit my website for more Bits, Bytes and Ramblings from me: http://dan.bemowski.info/

                                      1 Reply Last reply
                                      1
                                      • NeverDieN Offline
                                        NeverDieN Offline
                                        NeverDie
                                        Hero Member
                                        wrote on last edited by
                                        #36

                                        It's worth a read. :)

                                        dbemowskD 1 Reply Last reply
                                        1
                                        • NeverDieN NeverDie

                                          It's worth a read. :)

                                          dbemowskD Offline
                                          dbemowskD Offline
                                          dbemowsk
                                          wrote on last edited by
                                          #37

                                          @neverdie Skimming the bluetooth thread is interesting. 1377 posts is a lot to look over though.

                                          Vera Plus running UI7 with MySensors, Sonoffs and 1-Wire devices
                                          Visit my website for more Bits, Bytes and Ramblings from me: http://dan.bemowski.info/

                                          1 Reply Last reply
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