Doubt about bluetooth LE and linux systems

[gerardus1995]

Hello, i have been looking for something similar to your ble reader but to store in a local DB i have in my ubuntu system. I have been trying to adapt your app but i can not manage to make it work as i am new to working with BLE devices. Maybe you can help me as i can not manage to make the correct request to my xiaoxiang BMS. I have tried with gatttool and bluetoothctl but can not manage to fetch all the info they are supposed to send. Maybe you can explain me how to make the correct requests/commands to their 0x03 and 0x04 so i can retrieve from linux terminal or from a piece of code all the info you are using. Thank you very much in advance

[neilsheps]

Hi - it’s been 3 or so years since I last looked at my code, and don’t remember how I did it, other than I know it works fine on larger memory Arduino devices  Basically, look hard at how the code assembles a request message to the BMS. I think each request starts with 0x55 or so, then 0x03 or 0x04 then some checksums or something. If this is hard to decipher then I suggest using an android device and the app “ xiaoxiang bms” (that’s what it’s called on iPhone) then turn on HCI snoop logs under developer options and you’ll see the packets and format in there. That’s how I reverse engineered the protocol. Sorry, I can’t help on anything Linux. Not my skill setSent from my iPhoneOn Nov 6, 2024, at 7:32 AM, gerardus1995 ***@***.***> wrote: Hello, i have been looking for something similar to your ble reader but to store in a local DB i have in my ubuntu system. I have been trying to adapt your app but i can not manage to make it work as i am new to working with BLE devices. Maybe you can help me as i can not manage to make the correct request to my xiaoxiang BMS. I have tried with gatttool and bluetoothctl but can not manage to fetch all the info they are supposed to send. Maybe you can explain me how to make the correct requests/commands to their 0x03 and 0x04 so i can retrieve from linux terminal or from a piece of code all the info you are using. Thank you very much in advance —Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>