PySWIM

STM8 SWIM access library, BMS tester

This library is a simple ctypes wrapper for ST's DLLs.

Functions implemented:

• SWIM init
• Read memory
• Write memory

Requirements

• Python 2
• ST-Link

BMS tester

bms_test.py is a tester script for Ninebot/Xiaomi BMSes based on STM8L151K6+BQ769x0.

Functions

• STM8 GPIO regs dump
• BQ raw regs dump
• BQ cell voltages dump
• BQ temperature sensors dump

Howto

Connect ST-Link to BMS and to PC, press start button on the BMS to wake it up, run the script.