Library Description

Library provides control over device pins and SPI comuncation. You can read battery capacity level and it provides functions for generic spi transfer function.

Key functions:

• void balancer2_generic_transfer ( uint8_t *tx_buf, uint8_t *rx_buf, uint8_t buf_len ) - Generic fucntion for SPI communication
• float balancer2_get_batttery_lvl ( uint8_t bat_num ) - Get specific battery capcitive lvl
• uint16_t balancer2_read_adc ( uint8_t cmd_byte ) - Read ADC value from SPI

Examples description

The application is composed of three sections :

• System Initialization - Initialization of SPI module and additional pins
• Application Initialization - Sets reference volatage of device, s ets pins for supply and cells to high
• Application Task - Every 2 seconds logs readings of battery mV lvl

void application_task ( )
{
    float battery;
    char demo_str[ 30 ];

    battery = balancer2_get_batttery_lvl( BALANCER2_BATT1 );
    FloatToStr( battery, demo_str );
    mikrobus_logWrite( "Battery 1 : ", _LOG_TEXT );
    mikrobus_logWrite( demo_str, _LOG_TEXT );
    mikrobus_logWrite( " mV", _LOG_LINE );

    battery = balancer2_get_batttery_lvl( BALANCER2_BATT2 );
    FloatToStr( battery, demo_str );
    mikrobus_logWrite( "Battery 2 : ", _LOG_TEXT );
    mikrobus_logWrite( demo_str, _LOG_TEXT );
    mikrobus_logWrite( " mV", _LOG_LINE );

    battery = balancer2_get_batttery_lvl( BALANCER2_BATT_BOTH );
    FloatToStr( battery, demo_str );
    mikrobus_logWrite( "Batteries : ", _LOG_TEXT );
    mikrobus_logWrite( demo_str, _LOG_TEXT );
    mikrobus_logWrite( " mV", _LOG_LINE );

    mikrobus_logWrite( "__________________________________________", _LOG_LINE );

    Delay_ms( 2000 );
}

Other mikroE Libraries used in the example:

• SPI
• UART
• Conversions

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.