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    Please allow jtag or jtag over usb on next version

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    • ajb2k3A
      ajb2k3 @repligon
      last edited by

      @repligon you can debug over the usb connection or over UART

      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!

      R 1 Reply Last reply Reply Quote -2
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        Thrasher
        last edited by

        This post is deleted!
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        • ajb2k3A
          ajb2k3 @Thrasher
          last edited by

          @thrasher said in Please allow jtag or jtag over usb on next version:

          As far as I understood from different forums/github, we dont have jtag available because one of the pins is used to work with LCD. This case, it appears to be possible to hardmode m5stack, Im thinking of cutting pcb trace of this pin, add 2 point switch which will either connect it to lcd or work as jtag. With some skill you can even dremel a small hole on the side and put switch there

          Now that sounds like a good plan for an enterprise version of the M5Stick.
          If you have facebook post this on the Official group and PM Jimmy Lau!

          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!

          1 Reply Last reply Reply Quote 0
          • T
            Thrasher
            last edited by

            This post is deleted!
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            • B
              bobolink @Thrasher
              last edited by

              @thrasher But don’t you need the LCD display operating while you use JTAG to debug your code?
              Some kind of demultiplexer hardware added maybe?

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

                @thrasher The M5Stack is aimed at the beginners market and so JTAG is not required, Debug over usb or uart is all we need. JTAG is also a dying standard and getting dropped from alot of hardware. its only certain categories of hardware designers who make use of it now, basically enterprise companies.

                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!

                S 1 Reply Last reply Reply Quote -1
                • T
                  Thrasher
                  last edited by

                  This post is deleted!
                  ajb2k3A 1 Reply Last reply Reply Quote 0
                  • ajb2k3A
                    ajb2k3 @Thrasher
                    last edited by ajb2k3

                    @thrasher Raw micropython is available as standered as UIFlow is built on it. REPL is also available over USB.
                    You can also Used VSCode and Xcode on OSX to program the M5Stack.
                    @lukasmaximus89 made a good video on VScode on youtube.
                    https://www.youtube.com/watch?v=Y9pOWgsNgKk

                    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!

                    T 1 Reply Last reply Reply Quote 0
                    • T
                      Thrasher @ajb2k3
                      last edited by

                      This post is deleted!
                      lukasmaximusL 1 Reply Last reply Reply Quote 0
                      • lukasmaximusL
                        lukasmaximus @Thrasher
                        last edited by

                        @thrasher I struggle to see how your webserver on ap question is in anyway related to jtag. I did already give you quite a lot of pointers to how to make a webserver on the M5Stack AP, please keep that to your other discussion instead of going off topic here.

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                        • T
                          Thrasher @lukasmaximus
                          last edited by

                          @lukasmaximus
                          Thanks, I've deleted all my posts, so if you have enough privelegies on this forum you can purge them

                          1 Reply Last reply Reply Quote 1
                          • R
                            repligon @ajb2k3
                            last edited by

                            @ajb2k3 Are you saying that m5stack has built-in full-fledged debug server that lets you put breakpoints and examine any variables or are you talking about debugging with printf? Because when I was looking for the infro on the first I couldn't find anything.

                            ajb2k3A 1 Reply Last reply Reply Quote 2
                            • ajb2k3A
                              ajb2k3 @repligon
                              last edited by

                              @repligon said in Please allow jtag or jtag over usb on next version:

                              @ajb2k3 Are you saying that m5stack has built-in full-fledged debug server that lets you put breakpoints and examine any variables or are you talking about debugging with printf? Because when I was looking for the infro on the first I couldn't find anything.

                              REPL Explanation

                              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!

                              B 1 Reply Last reply Reply Quote -1
                              • B
                                bobolink @ajb2k3
                                last edited by

                                @ajb2k3 Of course we are talking about two different levels of debugging.

                                The BBC micro is also for beginners but allows both.

                                microbit jlink upgrade

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                                • T
                                  Thrasher
                                  last edited by

                                  I've spotted this interesting article https://www.cnx-software.com/2020/02/12/esp32-jtag-debugging-microsd-card-socket/

                                  But haven't tried it yet

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                                  • S
                                    sgallou @ajb2k3
                                    last edited by

                                    @ajb2k3 But is it possible to debug (put breakpoints, show variables, callstack...) through USB or UART ? How ? Works with VSCode/PlatformIO ?

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

                                      @sgallou said in Please allow jtag or jtag over usb on next version:

                                      @ajb2k3 But is it possible to debug (put breakpoints, show variables, callstack...) through USB or UART ? How ? Works with VSCode/PlatformIO ?

                                      If your asking about REPL then yes it works with VSCode

                                      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!

                                      1 Reply Last reply Reply Quote 0
                                      • B
                                        bobolink @Thrasher
                                        last edited by

                                        @thrasher
                                        As always, GPIO 14 is already in use for the display.

                                        “All the pins other then GPIO14 are availiable, however for some reason it was used for LCD CS on the M5Stack rendering JTAG unuseable.”

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