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G-Pereira / greenmobi-bms

A VESC compatible battery management system
GNU General Public License v3.0
17 stars 2 forks source link

Your LTC6811 SPI interface pinout does not correspond with Vesc FW #1

Closed Kabron287 closed 2 years ago

Kabron287 commented 2 years ago

Hi, there I flash 12s7p\vesc_default.bin from Vesc BMS github to Nucleo-F476 board and find it works. But it doesn't work with LTC6811 board if I use SPI pinout from your schematic. I rewired SPI according Ennoid BMS schematic and now it works with Vesc Tool SW.

Correct pinout is: PA4 - SS PA5 - SCK PA6 - MISO PA7 - MOSI

G-Pereira commented 2 years ago

Hey @Kabron287 ! Thank you for your feedback. I have not crossed that board design when I did my research. That's exactly and I was aiming for on a second iteration of this project. Do you think I can develop this project in a different direction than the Ennoid BMS which would be a good alternative? I don't have any reason to work on a board that will have the exact features of one that already is opensource.

Kabron287 commented 2 years ago

Do you think I can develop this project in a different direction than the Ennoid BMS which would be a good alternative? Of course you can. I guess it'll depend of the level of compatibility with Vesc FW if you do not wish to rewrite official FW or develop your own.

G-Pereira commented 2 years ago

I am aiming for complete compatibility not just because it would require me less work but most importantly so we can centralize efforts and contribute to the project and make it grow which would be better not only for me that I am using it but also for Benjamin, Trampa Boards and all other people using this ecosystem.

Kabron287 commented 2 years ago

So, you have to change pinout, I guess.

G-Pereira commented 2 years ago

I am not sure because I am following the hwconf/hw_rbat.h and you are not using an MCU from the same STM32 line. I am using the STM32L476 at the moment.

Kabron287 commented 2 years ago

Sorry, my board is NUCLEO-L476RG I did not compile the code, just took from /build_all

G-Pereira commented 2 years ago

Ah ok! That makes sense, you would need to compile with the pins I am using. But I will check which SPI pins I will choose. For now I am using the hw_rabat.h just to connect things as I go just to check the amount of pins I have available I will do a careful pin assignment once I am done with all sub circuits.

G-Pereira commented 2 years ago

I've close this for now because it isn't exactly an issue but I would like to continue the conversation on Discord, I've noticed you've joined us there!