Programming Module V4.5

[Solarbot]

Would it be possible to include information on programming the latest V4.5 module which doesn't have an ISP header? Many thanks.

[atanisoft]

I believe it is the same process as the external current shunt with UPDI.

[stuartpittaway]

Hi @Solarbot its an UPDI protocol.

You can program these boards using a simple USB to Serial adapter like the FT232. This is the documentation for it.

https://github.com/SpenceKonde/AVR-Guidance/blob/master/UPDI/jtag2updi.md

[Solarbot]

Hi both, thanks for responding.

I've looked up UPDI programming which seems pretty neat - am I correct in thinking that the V4.5 module cannot therefore be programmed by the DIYBMS controller? If so, may I ask if I need to compile and upload or is there a precompiled version availble? Also, happy to say the ATTINY seems to be avaible once more :-)

[stuartpittaway]

am I correct in thinking that the V4.5 module cannot therefore be programmed by the DIYBMS controller?

Unfortunately - you are correct, it cannot be programmed using the controller.

There is a pre-compiled code in the release
https://github.com/stuartpittaway/diyBMSv4ESP32/releases

Take a look in the modules/HEX folder for these files - use the one for 5K or 10K speed as required.

[Solarbot]

Thanks Stuart, appreciated.

Is there handy guide/workflow showing how to upload the HEX to the V4.5 module including what the 5K and 10K speed refers to :-)

[stuartpittaway]

No guide on this one I'm afraid - use the 5K if you are starting out - it refers to the communication speed between the modules and controller.

Do some google searching on UPDI programming - its quite simple, but a lot do struggle with it.

[Solarbot]

The advantage of working it out for myself is that new stuff gets learnt :-)

Thanks for the pointers 👍

Cheers

[atanisoft]

@stuartpittaway https://github.com/adafruit/Adafruit_AVRProg or https://gitlab.com/bradanlane/portaprog/-/tree/master/ might provide the functionality. I didn't have much luck with Adafruit_AVRProg on a standalone ESP32 setup, but portaprog might be usable. The key will be disabling all other functionality of the BMS during flashing to maximize the time allotted to UART interaction.

[Solarbot]

Hi Stuart, I’m just looking at this again and found BitLuni’s guide to using an Arduino to upload using UPDI along with ATtinyCore by SpenceKonde which looks like a nice option, links below. I haven’t had any luck as yet using your files on github all saved in one folder with the file main.cpp saved as an ‘ino’ file. I don’t have an option to select 2MHZ as the clock speed for the MCU selected as ATTINY841 (no bootloader) and get the compile error below. Am I barking up the wrong tree? I’ve also looked at using an FTDI serial board and XLOADER but there is no option to select ATTINY841 as the MCU. A bit stuck… any pointers much appreciated. Cheers, Cam https://www.youtube.com/watch?v=AL9vK_xMt4E <https://www.youtube.com/watch?v=AL9vK_xMt4E&t=463s> &t=463s https://github.com/SpenceKonde/ATTinyCore/blob/v2.0.0-devThis-is-the-head-submit-PRs-against-this/Installation.md Compile error: In file included from C:\Users\Me\Documents\Arduino\DIYBMS45\main.cpp:46:0: diybms_attiny841.h:18:2: error: #error Processor speed should be 2Mhz #error Processor speed should be 2Mhz ^~~~~ main.cpp:49:2: error: #error Expected DIYBMSBAUD define #error Expected DIYBMSBAUD define ^~~~~ main.cpp:53:2: error: #error Expected SAMPLEAVERAGING define #error Expected SAMPLEAVERAGING define ^~~~~ In file included from C:\Users\Me\Documents\Arduino\DIYBMS45\main.cpp:57:0: defines.h:15:10: fatal error: EmbeddedFiles_Defines.h: No such file or directory #include "EmbeddedFiles_Defines.h" ^~~~~~~~~~~~~~~~~~~~~~~~~ compilation terminated. exit status 1 #error Processor speed should be 2Mhz From: Stuart Pittaway ***@***.***> Sent: Friday, March 24, 2023 10:08 AM To: stuartpittaway/diyBMSv4Code ***@***.***> Cc: Solarbot ***@***.***>; Mention ***@***.***> Subject: Re: [stuartpittaway/diyBMSv4Code] Programming Module V4.5 (Issue #133) No guide on this one I'm afraid - use the 5K if you are starting out - it refers to the communication speed between the modules and controller. Do some google searching on UPDI programming - its quite simple, but a lot do struggle with it. — Reply to this email directly, view it on GitHub <#133 (comment)> , or unsubscribe <https://github.com/notifications/unsubscribe-auth/AX23XXYMZQKW5WM6OHLAX7LW5VW6HANCNFSM6AAAAAAWFLMDVE> . You are receiving this because you were mentioned. <https://github.com/notifications/beacon/AX23XXZJJSOUD6PUNAB3VWTW5VW6HA5CNFSM6AAAAAAWFLMDVGWGG33NNVSW45C7OR4XAZNMJFZXG5LFINXW23LFNZ2KUY3PNVWWK3TUL5UWJTSYLXWNS.gif> Message ID: ***@***.*** ***@***.***> >

[stuartpittaway]

Hi @Solarbot

Use the pre-compiled firmware/code directly from GITHUB Releases.

Additionally, use a simple USB Serial adapter as an UPDI programmer, you don't need anything fancy, diode and couple of resistors. https://github.com/SpenceKonde/AVR-Guidance/blob/master/UPDI/jtag2updi.md#serial-adapter-requirements

After this, AVRDUDE command line tool will program the chips

Alternatively, you can use a spare Arduino Uno like in this guide - https://daumemo.com/diy-updi-usb-programmer-which-can-be-made-with-cheap-hardware/

And finally, another option is to use the Microchip python code...
https://github.com/microchip-pic-avr-tools/pymcuprog

[Solarbot]

Hi Stuart, Perfect, thank you – AVRDUDESS proved to be the key for me in the end. Much appreciated as is all your work – I’m slowly working towards building a battery but at the rate I’m going you will have a whole new ecosystem up and running by then :-) Cheers. From: Stuart Pittaway ***@***.***> Sent: Tuesday, October 17, 2023 9:43 AM To: stuartpittaway/diyBMSv4Code ***@***.***> Cc: Solarbot ***@***.***>; Mention ***@***.***> Subject: Re: [stuartpittaway/diyBMSv4Code] Programming Module V4.5 (Issue #133) Hi @Solarbot <https://github.com/Solarbot> Use the pre-compiled firmware/code directly from GITHUB Releases. Additionally, use a simple USB Serial adapter as an UPDI programmer, you don't need anything fancy, diode and couple of resistors. https://github.com/SpenceKonde/AVR-Guidance/blob/master/UPDI/jtag2updi.md#serial-adapter-requirements After this, AVRDUDE command line tool will program the chips Alternatively, you can use a spare Arduino Uno like in this guide - https://daumemo.com/diy-updi-usb-programmer-which-can-be-made-with-cheap-hardware/ And finally, another option is to use the Microchip python code... https://github.com/microchip-pic-avr-tools/pymcuprog — Reply to this email directly, view it on GitHub <#133 (comment)> , or unsubscribe <https://github.com/notifications/unsubscribe-auth/AX23XX634GBNXN5HGU4DEZ3X7ZAIPAVCNFSM6AAAAAAWFLMDVGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTONRVHE2TANJSGU> . You are receiving this because you were mentioned. <https://github.com/notifications/beacon/AX23XX3DRZ3TV7O6PP2OWEDX7ZAIPA5CNFSM6AAAAAAWFLMDVGWGG33NNVSW45C7OR4XAZNMJFZXG5LFINXW23LFNZ2KUY3PNVWWK3TUL5UWJTTJIJCD2.gif> Message ID: ***@***.*** ***@***.***> >