BQEV23K

A project that controls the Texas Instruments (TI) EV2300 hardware interface through C# WPF. Especially written for the BQ40Z80 (2-Series to 7-Series battery pack manager with impedance track gas gauge). It runs a learning cycle or GPC cycle in manual or full automatic mode.

Features

As a side effect it demonstrates:

• Implementation and access of bq80xrw.ocx COM component in C# WPF
• Controlling the EV2300 GPIO pins (relay jig control)
• Read device configuration files in TI .bqz format
• Read and write to BQ40Z80 registers in normal mode and ManufacturerAccessBlock mode
• Reading the entire BQ40Z80 dataflash
• Running the BQ40Z80 learning and GPC cycle
• Implementation and usage of Oxyplot WPF with real time update

Recommended documentation

BQ40Z80 Technical documents

• SLUA848 How to Complete a Successful Learning Cycle for the bq40z80
• SLUA868 bq40z80 Manufacture, Production, and Calibration
• SLUUBT4A bq40z80EVM Li-Ion Battery Pack Manager Evaluation Module
• SLUUBT5 bq40z80 Technical Reference Manual
• SLVA725 Simple Guide to Chemical ID Selection Tool (GPC)

Requirements

• Project written for and tested with custom design BQ40Z80 battery pack management board.
• EV2300 hardware interface (EV2400 not tested, but expected to work).
• External relay jig for fully automated cycle (charger and load control).

Build instructions

Built and tested on Windows7 64bit with Visual Studio 2015.

Dependencies

• Installed EV2300 customer kit (see below).
• NuGet Oxplot.Core and Oxplot.Wpf packages.

Setup of new Visual Studio project with bq80xrw implementation

1. Download EV2300 customer kit
2. Run and install EV2300DevKitSetup.exe
3. Create new C# WPF project in Visual Studio
   • BQEK23K_Demo
   • Add a new a Visual Studio C# Windows Form Control Library project (located in Visual C# => Classic Desktop
     • AxBQEV23K
     • Rename automatically generated UserControl1 into AxBQEV23KControl. Choose Yes in popup dialog.
   • Add Bq80xRW COM control in AxBQEV23KControl
     • In Toolbox, right click => Choose Item => Select COM Components tab => Select checkbox Bq80xRW Control
     • Search Bq80xRW Control in Toolbox (General) and drag it into AxBQEV23KControl, AxBQ80XRWLib and BQ80XRWLib will be added as reference automatically.
     • Build AxBQEV23K
   • Add AxInterop.BQ80XRWLib as reference in BQEV23K
     • In solution explorer, selected References, right click and Add Reference
     • Browse to AxBQEV23K project build folder (bin\Debug or bin\Release)
     • Select AxInterop.BQ80XRWLib.dll and add
   • Add System.Windows.Forms as reference in BQEV23K
   • Add WindowsFormsIntegration as reference in BQEV23K
4. Add new AxBQ80XRWLib.AxBq80xRW class to your project code.

MainWindow.xaml.cs

using System.Windows;

namespace BQEV23K_Demo
{
    public partial class MainWindow : Window
    {
        AxBQ80XRWLib.AxBq80xRW EV23K;
        public MainWindow()
        {
            InitializeComponent();
            AxBQ80XRWLib.AxBq80xRW EV23K;
            System.Windows.Forms.Integration.WindowsFormsHost host = new System.Windows.Forms.Integration.WindowsFormsHost();
            EV23K = new AxBQ80XRWLib.AxBq80xRW();
            host.Child = EV23K;
            MainGrid1.Children.Add(host);
        }
    }
}

MainWindow.xaml

<Window x:Class="BQEV23K_Demo.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:BQEV23K_Demo"
        mc:Ignorable="d"
        Title="MainWindow" Height="350" Width="525">
    <Grid Name="MainGrid1">
        
    </Grid>
</Window>

5. Build project.

Original source

License

Copyright © 2018 Michael Wolf, mictronics.de Distributed under the modified MIT license.

Disclaimer

I'm not an TI employee or part of their product support. This is a pure hobbyist project.