ST STSW-L9961BMS User manual

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Quick Start Guide
for
STSW-L9961BMS
Software package for the STEVAL-L99615C kit -
L9961 industrial battery management system

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STSW-L9961BMS Software package

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• Software package specifically designed for the STEVAL-L99615C
kit to demonstrate the capabilities of the L9961 industrial BMS IC
• Includes the L9961 driver component, along with its register map
and related basic APIs
• Application demos exploiting the key-features of the L9961 ICs
• Architecture compatible with STM32Cube Firmware BSP
specification
• Use of a serial communication terminal to output data
• Contains demonstration project released for:
• STM32CubeIDE v.1.13.1
• EWARM (IAR) v. 9.20
• uVision (Keil) v. 5.38
Key topics of the
STSW-L9961BMS Software package

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Main SW functional layers are:
1. Hardware abstraction divided in
•STM32CubeG0 HAL and LL Hardware
Abstraction Layer for the STM32G0
microcontroller
•Board Support Package (BSP) library layer
containing the drivers of:
• the L9961 component device
• the STEVAL-L99615C expansion board
• the NUCLEO-G071RB board
2. Application
•Battery status monitoring demonstrating the
acquisition of voltage, current and temperature
from a battery pack made up of 5 cells
•Coulomb counting mechanism monitoring the
charges flowing through the battery cells
STSW-L9961BMS Software Architecture
STEVAL-L99615C
STM32CubeG0 HAL / LL
Hardware
Hardware
Abstraction
Applications &
demonstration
STM32G071RB L9961
STEVAL-L99615C
BSP
L9961
Component
NUCLEO-G071RB
BSP
Board Support
Package
Battery status monitoring
(voltage, current and temperature) Coulomb counting

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The Board Support Package comprises the following
drivers:
• the L9961 component device, including the register map of the
device, the basic functions to manage registers at bit level, the
write/read functions (single-register and multi-registers), and the APIs
to configure the device and manage its functionalities (i.e. Go-to-
Normal, Change Address, Enable/Disable CRC,…)
• the STEVAL-L99615C expansion board support package that
manages the configurations of the HW peripheral and GPIOs used by
the application
• the NUCLEO-G071RB Nucleo board support package containing a
set of minor functions connected to the microcontroller board
STSW-L9961BMS: BSP drivers

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STSW-L9961BMS
Application Demos

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• The STSW-L9961BMS package contains some
application demos that, when running within the
STEVAL-L99615C, allow for the evaluation of the
features and performances of the L9961
• The Application Demos are:
− App Demo #1 - Battery status monitoring
− App Demo #2 - Coulomb counting
• Each demo is selectable through the project
compiler options and exploits the serial
communication peripheral to return specific output
data
Application Demos

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• Different viewer layouts allow live monitoring of the acquired data and elaborated data. For the viewer
selection, you may use the keyboard 1, 2 and 3 keys or press the Nucleo blue button for a long time.
STSW-L9961BMS output data viewers
VT100 User Interface
data logger
CSV format data logger

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•The Application Demos and their related functions are
fully described in the Application User source and header
files of the project
•The project directory, in the Documentation sub-directory,
contains the STSW-L9961BMS.chm Doxygen file
•The Doxy file enriches the code with relevant information
about STSW-L9961BMS firmware architecture and
functionalities
STSW-L9961BMS Doxy file

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STEVAL-L99615C
Kit Overview