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    M5stack basic core battery power on issue (ip5306 strange power management)

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    • arzamanA
      arzaman
      last edited by

      Here is a video showing the problem

      when I shut down the M5stack basic core no chance to boot again

      link text

      any idea so far ?

      Davide

      m5-docsM 1 Reply Last reply Reply Quote 0
      • m5-docsM
        m5-docs @arzaman
        last edited by

        @arzaman How about BASIC Core boots only with Type-C USB cable without BASIC bottom?

        M5Stack documentation URL

        https://docs.m5stack.com

        arzamanA 1 Reply Last reply Reply Quote 0
        • arzamanA
          arzaman @m5-docs
          last edited by

          @m5-docs sorry but don't understand the question

          with USB Type C off course the M5 basic core boots regularly...the problem is with the battery power suppy either basic bottom or my custom expansion baord. If I shut down the M5 basic core with double clik and battery power no chance to restart

          Davide

          1 Reply Last reply Reply Quote 0
          • L
            liushasha
            last edited by

            Seems like the battery enters into protection mode after power off. Could you please try to pull out the battery in the bottom and plug in back in to restart the battery and try again.

            arzamanA 1 Reply Last reply Reply Quote 0
            • arzamanA
              arzaman @liushasha
              last edited by

              @liushasha battery has no "protection" circuit ...all is manged by IP5306
              anyway removed and reconnected the LiPo battery (or the core bottom) few times and always same behaviour
              and more over same battery on other M5stack basic core works perfeclty

              Davide

              L 1 Reply Last reply Reply Quote 0
              • L
                liushasha @arzaman
                last edited by

                HI, @arzaman, this IP5306 is i2c version, it can be programmed via the i2c protocol. Since the only problem is just the shutdown operation. the chance that the ic is totally broken on the hardware side is pretty rare. so could it be possible that you have accidentally modified the code? Would you please refresh the firmware by M5burner to exclude the software problem? Thanks

                arzamanA 1 Reply Last reply Reply Quote 0
                • arzamanA
                  arzaman @liushasha
                  last edited by

                  @liushasha maybe you refer to a different Core version (fire ??)
                  My M5stack BASIC core comes with IP5306 that has no I2C interface to ESP32 (should be very very useful to have and move power management to SW level)

                  here the schematic (or at lease what is public) of the power management...now SW no I2C

                  0_1557354344922_93ae07c0-0a4c-4da0-802b-85772e207460-image.png

                  so I assume a "faulty" core (I have two in a lot of 12)

                  Davide

                  m5-docsM 1 Reply Last reply Reply Quote 0
                  • L
                    liushasha
                    last edited by

                    This schematic is wrong, every core is used i2c ip5306.

                    arzamanA 1 Reply Last reply Reply Quote 0
                    • L
                      liushasha
                      last edited by

                      2 out of 12? that's pretty high rate. I thought its 1 out of ten. I from M5Stack by the way. I will help you target the problem, and handle it afterward. I apologized for the bad experience.

                      1 Reply Last reply Reply Quote 0
                      • m5-docsM
                        m5-docs @arzaman
                        last edited by

                        Hello @arzaman, In order to confirm that if the IP5306 is IIC version on all CORE you have. It's better to download the following testing code.

                        https://github.com/m5stack/M5Stack/tree/master/examples/Advanced/I2C_Tester

                        M5Stack documentation URL

                        https://docs.m5stack.com

                        arzamanA 1 Reply Last reply Reply Quote 0
                        • arzamanA
                          arzaman @liushasha
                          last edited by

                          @liushasha said in M5stack basic core battery power on issue (ip5306 strange power management):

                          This schematic is wrong, every core is used i2c ip5306.

                          Really ? I don't know if this is a good or a very bad news...
                          having IP5306 with I2C and enable SW control of power management is nice but knowing that the official schematic where I have based the design of my custom HW and development of SW is not the real one really puzzle me !

                          this is the official schema on github
                          https://github.com/m5stack/M5-Schematic/blob/master/Core/Basic/M5-Core-Schematic(20171206).pdf

                          Is there an updated one ? are there other differences ??

                          I know that M5Stack is not "open source" but without a real schema quite difficult to mange any HW/FW development

                          Davide

                          L 1 Reply Last reply Reply Quote 0
                          • arzamanA
                            arzaman @m5-docs
                            last edited by

                            @m5-docs Thanks for the suggestion... and you are right my core has I2C version of IP5306 ! Sorry if I miss it

                            The bus scan found the IP5306 at address 0x75
                            I upload a simple sketch to monito battery level and it works

                            0_1557394841048_16b57fcb-ad0f-435d-9d35-eca3088a4578-image.png

                            this is good but still don't solve my problem
                            -if I power m5 core with USB all ok
                            -if I disconnect USB using core bottom battery the core stays on and I can do reset with power on again
                            -if I power off (double click) no change to power on again

                            anything now that I can modify in IP5306 register to fix the power on ?

                            Davide

                            m5-docsM 1 Reply Last reply Reply Quote 0
                            • m5-docsM
                              m5-docs @arzaman
                              last edited by

                              @arzaman Really sorry about that. I do not clearly know your problem.

                              "-if I disconnect USB using core bottom battery the core stays on and I can do reset with power on again
                              -if I power off (double click) no change to power on again"

                              M5Stack documentation URL

                              https://docs.m5stack.com

                              arzamanA 1 Reply Last reply Reply Quote 0
                              • L
                                liushasha @arzaman
                                last edited by

                                @arzaman I apologize for the misleading on schematics, it is surely our mistake, we didn't well organize all of the material. We are working on it, will have better material come out soon.

                                arzamanA 1 Reply Last reply Reply Quote 0
                                • arzamanA
                                  arzaman @m5-docs
                                  last edited by

                                  @m5-docs I think we can conclude that is and "HW failure of IP5306" no big issue I can use this core for the lab or for application with no battery

                                  maybe if you can send me a replacement or tell me where to buy the I2C version of IP5306 I can try to replace by myself

                                  thanks for the support anyway

                                  m5-docsM 1 Reply Last reply Reply Quote 0
                                  • m5-docsM
                                    m5-docs @arzaman
                                    last edited by

                                    @arzaman The IP5306 which is iic version is customized. The best way for you is to ask saler for a replacement or ask our saler for a new core or iic version IP5306. Sorry for the inconvenience !

                                    M5Stack documentation URL

                                    https://docs.m5stack.com

                                    1 Reply Last reply Reply Quote 0
                                    • arzamanA
                                      arzaman @liushasha
                                      last edited by

                                      @liushasha no problem...I had an old schema and did not check the note you add to the new one. Your documentation level is quite good and indeed If there is a problem I see there is quite good support on the forum and community ... in a way or another I get the info :-)

                                      most important that now I have more understanding of power management and the fact I can control battery via SW is very important (M5stack is perfect for portable applications battery pwered)

                                      could be VERY USEFUL a sort of translation of IP5306 Chinese data sheet
                                      there are few register that provide info but not able to unerstand the usage !!

                                      from various source I undertand that
                                      0x78 provides battery level (25/50/75/100)
                                      0x71 battery charging level (but not sure)
                                      what about the other registers ? what about control register ??

                                      simple table with register and functions/value will help a lot "non Chinese" speaking people
                                      hope to see soon in the documentation !

                                      thanks

                                      Davide

                                      m5-docsM arzamanA 2 Replies Last reply Reply Quote 0
                                      • m5-docsM
                                        m5-docs @arzaman
                                        last edited by

                                        @arzaman Thanks. Your seriousness really touched me.

                                        M5Stack documentation URL

                                        https://docs.m5stack.com

                                        1 Reply Last reply Reply Quote 0
                                        • arzamanA
                                          arzaman @arzaman
                                          last edited by

                                          I got also documentation for power management

                                          https://docs.m5stack.com/#/en/api/power?id=getbatterylevel

                                          clear and comprehnesive

                                          all ok issue "solved"

                                          Davide

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

                                            @arzaman said in M5stack basic core battery power on issue (ip5306 strange power management):

                                            I got also documentation for power management

                                            https://docs.m5stack.com/#/en/api/power?id=getbatterylevel

                                            clear and comprehnesive

                                            all ok issue "solved"

                                            Davide

                                            If you are getting an understanding of the power management of the IP5306, would you mind helping me write it up for my book please?
                                            You will be credited for the information in the book.

                                            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!

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