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    [Solved] GPS Unit (AT6558)

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    • lukasmaximusL
      lukasmaximus
      last edited by

      I haven't personally used the gps unit, but as I am aware it communicates via UART which means it should be connected to port C

      M5StickFreaklerM 1 Reply Last reply Reply Quote 0
      • M5StickFreaklerM
        M5StickFreakler @lukasmaximus
        last edited by

        @lukasmaximus said in GPS Unit (AT6558):

        I haven't personally used the gps unit, but as I am aware it communicates via UART which means it should be connected to port C

        It does not work on port C.
        In UIFlow you can switch between Port A, B, and C for the GPS-Unit, so it suggest that all three ports are possible to use.
        But it does not work, neither with A, B nor C.
        I have here M5Stack stuff for over thousand dollar and many, many items are not working well.
        So, I hope there is a solution to get working the GPS unit(s).

        1 Reply Last reply Reply Quote 0
        • ajb2k3A
          ajb2k3
          last edited by

          @M5StickFreakler what firmware are you running on your devices?
          I am checking through items at the moment and finding problems due to the switch to the mainstream micropython branch.

          UIFlow, so easy an adult can learn it!
          If I don't know it, be patient!
          I've ether not learned it or am too drunk to remember it!
          Author of the WIP UIFlow Handbook!
          M5Black, Go, Stick, Core2, and so much more it cant be fit in here!

          M5StickFreaklerM 1 Reply Last reply Reply Quote 0
          • M5StickFreaklerM
            M5StickFreakler @ajb2k3
            last edited by

            @ajb2k3 said in GPS Unit (AT6558):

            @M5StickFreakler what firmware are you running on your devices?
            I am checking through items at the moment and finding problems due to the switch to the mainstream micropython branch.

            Hi ajb2k3

            I have checked it with UIFLOW 1.0.9.1 and following firmwares

            • 1.2.3 --> not supported
            • 1.3.2 --> NOK
            • 1.4.4 --> NOK
            • 1.4.5 --> NOK
            • 1.4.5.1 --> NOK
            • 1.5.0 --> NOK
            • 1.5.1 --> NOK

            Nothing is working. I have tested it on 3 different M5Stack FIRE with 3 different GPS units.
            Each on all ports - nada

            It is very frustrating and time consumpting and costly. I think M5Stack should increase its quality standards. Here in Switzerland, we are used to the fact that products work what they promise and what we pay for.

            Best wished
            Thomas

            1 Reply Last reply Reply Quote 1
            • world101W
              world101
              last edited by world101

              Hint: if you use the forum search feature you can find threads like this that say the M5Stack Fire PSRAM conflicts with port C because they use the same GPIO 16 and 17, which is also the same ports the GPS units and modules use (see the GPS docs). The work around involves cutting a trace and rewiring.

              M5StickFreaklerM 1 Reply Last reply Reply Quote 0
              • M5StickFreaklerM
                M5StickFreakler @world101
                last edited by M5StickFreakler

                @world101 said in GPS Unit (AT6558):

                Hint: if you use the forum search feature you can find threads like this that say the M5Stack Fire PSRAM conflicts with port C because they use the same GPIO 16 and 17, which is also the same ports the GPS units and modules use (see the GPS docs). The work around involves cutting a trace and rewiring.

                Thank you
                But I would like to get a solution from M5Stack withouth cutting wires in all my devices.
                M5Stack sell this GPS units to use 'em on M5Stack devices and does not provide any information that we have to modify the hardware to get running it.
                Also I do not use the GPS Modul, but I use the GPS Unit!

                @m5stack could you provide customers with any official information about the behavior?

                Best regards
                Thomas

                m5stackM 1 Reply Last reply Reply Quote 0
                • m5stackM
                  m5stack @M5StickFreakler
                  last edited by

                  @m5stickfreakler actually , change use PortA is a great solution. the GPS Unit Cold start takes time, (maybe 3~5min). the signal quality very important , so had better use it in the house outside.

                  M5StickFreaklerM 1 Reply Last reply Reply Quote 0
                  • M5StickFreaklerM
                    M5StickFreakler @m5stack
                    last edited by M5StickFreakler

                    @m5stack said in GPS Unit (AT6558):

                    start takes time, (maybe 3~5min). the signal quality very important , so had better use it in the house outside.

                    Thank you very much.
                    Unfortunately it does not work with any port as I have described above.
                    I just receive Quality "NO signal". It can stay for hours outside, nothing changes.
                    Cold start time is 35 seconds as you can see in technical details of m5stack.

                    BUT HERE IS THE BEST:
                    I received today 4 new GPS Units and now it works.
                    My "old" two GPS units are not working.
                    That was it. A lot of waited time

                    m5stackM 1 Reply Last reply Reply Quote 0
                    • m5stackM
                      m5stack @M5StickFreakler
                      last edited by

                      @m5stickfreakler if the "old" GPS has problem, pls contact our store.

                      liemphL 1 Reply Last reply Reply Quote 0
                      • liemphL
                        liemph @m5stack
                        last edited by liemph

                        @m5stack said in [Solved] GPS Unit (AT6558):

                        @m5stickfreakler if the "old" GPS has problem, pls contact our store.

                        I bought a GPS Unit from Aliexpress and it seems old since I faced the same problem with @M5StickFreakler. What store should I contact for this issue?
                        Just now I contacted the M5Store from the Aliexpress homepage.

                        m5stackM 1 Reply Last reply Reply Quote 0
                        • m5stackM
                          m5stack @liemph
                          last edited by

                          @liemph We have not updated the version of the GPS Unit. It may be that the GPS Unit you are using has some quality problems. Please contact the store where you purchased the product

                          1 Reply Last reply Reply Quote 0
                          • vkichlineV
                            vkichline
                            last edited by

                            I bought a GPS unit recently, and have the same problem.
                            I found a simple solution. No need to cut any wires; that's for the Module, not the Unit.

                            • Unplug the GPS unit from Port C.
                            • Stat the M5Stack FIRE.
                            • Plug the GPS Unit back into Port C.

                            Without unplugging the GPS unit I experience 100% failures.
                            With unplugging before power-up: 100% success.

                            The unit is a beauty when working! Acquires 10 satellites in seconds, indoors!
                            The power-up sequence is definitely a drawback, but not a deal breaker.
                            I wonder if it could be solved with a capacitor or some other simple augmentation?

                            liemphL 1 Reply Last reply Reply Quote 0
                            • liemphL
                              liemph @vkichline
                              last edited by

                              @vkichline Could you share the code?

                              1 Reply Last reply Reply Quote 0
                              • vkichlineV
                                vkichline
                                last edited by

                                @liemph; I'd be happy to share my code, but all the GPS-related parts can be found in the product examples here:
                                https://github.com/m5stack/M5Stack/tree/master/examples/Unit/GPS_AT6558
                                The example is pretty complete, but unreadable.

                                The project I'm working on is more display oriented, and most of the code is a nascent control class I'm playing around with for solving general display problems. You're welcome to take what you like from it:
                                https://github.com/vkichline/GPSTest

                                I plan to pursue the display controls in another project, so I won't be updating this one.

                                liemphL 1 Reply Last reply Reply Quote 0
                                • liemphL
                                  liemph @vkichline
                                  last edited by

                                  @vkichline said in [Solved] GPS Unit (AT6558):

                                  @liemph; I'd be happy to share my code, but all the GPS-related parts can be found in the product examples here:
                                  https://github.com/m5stack/M5Stack/tree/master/examples/Unit/GPS_AT6558
                                  The example is pretty complete, but unreadable.

                                  The project I'm working on is more display oriented, and most of the code is a nascent control class I'm playing around with for solving general display problems. You're welcome to take what you like from it:
                                  https://github.com/vkichline/GPSTest

                                  I plan to pursue the display controls in another project, so I won't be updating this one.

                                  Thanks a lot.

                                  A 1 Reply Last reply Reply Quote 0
                                  • A
                                    amn @liemph
                                    last edited by

                                    Hi
                                    work with M5 stack Fire,
                                    the problem is the sensibility, this interface without external antenna is frequent to have disconnection or louse signal inside my home.
                                    corresponding of the price.

                                    amn

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