Balancer 5 Click

Balancer 5 Click is an intelligent 2-cell Li-Ion battery charger, system power manager, and a battery fuel gauge Click board™. Balancer 5 Click is based on BQ25887 controller which has some extra features enabling charging without too much hassle.

Click Product page

Click library

• Author : MikroE Team
• Date : Dec 2019.
• Type : I2C type

Software Support

We provide a library for the Balancer5 Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Package can be downloaded/installed directly form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for Balancer5 Click driver.

Standard key functions :

• Config Object Initialization function.

  void balancer5_cfg_setup ( balancer5_cfg_t *cfg );

• Initialization function.

  BALANCER5_RETVAL balancer5_init ( balancer5_t ctx, balancer5_cfg_t cfg );

• Click Default Configuration function.

  void balancer5_default_cfg ( balancer5_t *ctx );

Example key functions :

• This function sets charging status.

  void balancer5_charge ( balancer5_t *ctx, uint8_t state );

Examples Description

This demo performs neccessary initializations, reads ADC values from Click registers and logs it.

The demo application is composed of two sections :

Application Init

Initializes Click and Driver, Checks Device ID, starts charging, reads charge status registers and configures ADC.

void application_init ( void )
{
    log_cfg_t log_cfg;
    balancer5_cfg_t cfg;

    /** 
     * Logger initialization.
     * Default baud rate: 115200
     * Default log level: LOG_LEVEL_DEBUG
     * @note If USB_UART_RX and USB_UART_TX 
     * are defined as HAL_PIN_NC, you will 
     * need to define them manually for log to work. 
     * See @b LOG_MAP_USB_UART macro definition for detailed explanation.
     */
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, "---- Application Init ----" );

    //  Click initialization.

    balancer5_cfg_setup( &cfg );
    BALANCER5_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    balancer5_init( &balancer5, &cfg );

    //  Device ID sanity check

    temp_data = balancer5_check_id( &balancer5 );

    if ( temp_data == BALANCER5_ERROR_ID )
    {
        log_info( &logger, "ID ERROR!!!" );
        for ( ; ; );
    }

    log_info( &logger, "***** ID OK *****" );

    //  Switch charger on

    balancer5_charge( &balancer5, BALANCER5_CHARGE_ON );

    //  Send configuration info to logger

    temp_data = balancer5_read_data( &balancer5, BALANCER5_REG_CHARGER_STATUS_1 );
    charger_status_1_handler( temp_data );

    temp_data = balancer5_read_data( &balancer5, BALANCER5_REG_CHARGER_STATUS_2 );
    charger_status_2_handler( temp_data );

    //  Set default configuration

    balancer5_default_cfg ( &balancer5 );

}

Application Task

Reads ADC values from registers and logs it.

void application_task ( void )
{
    temp_data = balancer5_read_data( &balancer5, BALANCER5_REG_IBUS_ADC1 );
    temp_uint_data = temp_data;
    temp_uint_data <<= 8;
    temp_data = balancer5_read_data( &balancer5, BALANCER5_REG_IBUS_ADC0 );
    temp_uint_data |= temp_data;
    log_printf( &logger, "- IBUS: %umA\r\n", temp_uint_data );

    temp_data = balancer5_read_data( &balancer5, BALANCER5_REG_ICHG_ADC1 ); 
    temp_uint_data = temp_data;
    temp_uint_data <<= 8;
    temp_data = balancer5_read_data( &balancer5, BALANCER5_REG_ICHG_ADC0 );
    temp_uint_data |= temp_data;
    log_printf( &logger, "- ICHG: %umA\r\n", temp_uint_data );

    temp_data = balancer5_read_data( &balancer5, BALANCER5_REG_VBAT_ADC1 );
    temp_uint_data = temp_data;
    temp_uint_data <<= 8;
    temp_data = balancer5_read_data( &balancer5, BALANCER5_REG_VBAT_ADC0 );
    temp_uint_data |= temp_data;
    log_printf( &logger, "- VBAT: %umV\r\n", temp_uint_data );

    temp_data = balancer5_read_data( &balancer5, BALANCER5_REG_VBUS_ADC1 );
    temp_uint_data = temp_data;
    temp_uint_data <<= 8;
    temp_data = balancer5_read_data( &balancer5, BALANCER5_REG_VBUS_ADC0 );
    temp_uint_data |= temp_data;
    log_printf( &logger, "- VBUS: %umV\r\n", temp_uint_data );

    temp_data = balancer5_read_data( &balancer5, BALANCER5_REG_VCELLTOP_ADC1 );
    temp_uint_data = temp_data;
    temp_uint_data <<= 8;
    temp_data = balancer5_read_data( &balancer5, BALANCER5_REG_VCELLTOP_ADC0 );
    temp_uint_data |= temp_data;
    log_printf( &logger, "- VCELLTOP: %umV\r\n", temp_uint_data );

    temp_data = balancer5_read_data( &balancer5, BALANCER5_REG_VCELLBOT_ADC1 );
    temp_uint_data = temp_data;
    temp_uint_data <<= 8;
    temp_data = balancer5_read_data( &balancer5, BALANCER5_REG_VCELLBOT_ADC0 );
    temp_uint_data |= temp_data;
    log_printf( &logger, "- VCELLBOT: %umV\r\n", temp_uint_data );

    temp_data = balancer5_read_data( &balancer5, BALANCER5_REG_TS_ADC1 );
    temp_uint_data = temp_data;
    temp_uint_data <<= 8;
    temp_data = balancer5_read_data( &balancer5, BALANCER5_REG_TS_ADC0 );
    temp_uint_data |= temp_data;
    temp_float_data = temp_uint_data;
    temp_float_data *= 0.098;
    log_printf( &logger, "- TS: %.2f%%\r\n", temp_float_data );

    temp_data = balancer5_read_data( &balancer5, BALANCER5_REG_TDIE_ADC1 );
    temp_uint_data = temp_data;
    temp_uint_data <<= 8;
    temp_data = balancer5_read_data( &balancer5, BALANCER5_REG_TDIE_ADC0 );
    temp_uint_data |= temp_data;
    temp_float_data = temp_uint_data;
    temp_float_data *= 0.5;
    log_printf( &logger, "- TDIE: %.2f%s\r\n", temp_float_data, log_degree );

    log_printf( &logger, "____________________\r\n" );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
}  

Note

Additional functions charger_status_1_handler() and charger_status_2_handler() are used to log charger status 1 and 2.

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.Balancer5

Additional notes and informations

Depending on the development board you are using, you may need USB UART Click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all Mikroelektronika compilers, or any other terminal application of your choice, can be used to read the message.