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mikroSDK Library

Charger 8 click

Rating:

5

Author: MikroElektronika Team

Last Updated: 2018-12-10

Category: Power supply

Downloaded: 38 times

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Charger 8 Click is an intelligent Li-Ion battery charger, system power manager, and a battery fuel gauge Click board. As a system power distributor, it can supply up to 2A to a connected load.

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mikroSDK Library Blog

Charger 8 click

Charger 8 click

Native view of the Charger 8 Click board.

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Charger 8 click

Charger 8 click

Front and back view of the Charger 8 Click board.

View full image

Library Description

The library initializes and defines the I2C bus driver and drivers that offer a choice for writing data in register/NV memory and reading data from register/NV memory. The library includes function to read the battery diagnostics. The user can set the maximum battery capacity to have a good reading of the current capacity of the battery. The user has a function for enable/ disable device, sets Alert mode and usb suspand mode.

Key functions:

  • void charger8_enable(uint8_t enable) - Functions for enable or disable device.
  • float charger8_getCurrent() - Functions for reading the current charging battery.
  • float charger8_getVoltage() - Functions for reading the voltage of the battery.
  • void charger8_reset() - General reset procedure.

Examples description

The application is composed of the three sections :

  • System Initialization - Initializes I2C module and sets CS pin, RST pin and PWM pin as OUTPUT and INT pin as INPUT.
  • Application Initialization - Initialization driver init, enable moduele and default configuration, disable ALERT and USB suspand mode and sets max battery capacity.
  • Application Task - (code snippet) - Reads battery diagnostics and this data logs to USBUART every 1500 ms.

Note: The user can charge a battery internally over mikroBUS or externally by supplying the VIN connectors with 5V. For more precise diagnosis and easier tracking of the charging battery status you can set its capacity - e.g. if you have a 2000mAh battery you can use the "charger8_setMaxBatteryCapacity()" function and pass the parameter for 2000mAh, by doing this you make the readings more precise. In the example we used only some possibilities of the diagnostics like temperature of the chip during charging, charging current, current battery voltage, current battery capacity and how much the battery is charged in percentage. In case of changing the battery to a different one, it is neccessary to reset the device and set the battery's maximum capacity.

void applicationTask()
{
    float Temperature;
    float Current;
    float Voltage;
    uint8_t SOC;
    uint16_t Capacity;
    char demoText[50];
    
    mikrobus_logWrite(" - Battery diagnostics - ", _LOG_LINE);
    /* Temperature */
    Temperature = charger8_getTemperature();
    FloatToStr(Temperature, demoText);
    mikrobus_logWrite(" - Temperature : ", _LOG_TEXT);
    mikrobus_logWrite(demoText, _LOG_TEXT);
    mikrobus_logWrite(" C ", _LOG_LINE);
    /* Current */
    Current = charger8_getCurrent();
    FloatToStr(Current, demoText);
    mikrobus_logWrite(" - Current : ", _LOG_TEXT);
    mikrobus_logWrite(demoText, _LOG_TEXT);
    mikrobus_logWrite(" mA ", _LOG_LINE);
    /* Voltage */
    Voltage = charger8_getVoltage();
    FloatToStr(Voltage, demoText);
    mikrobus_logWrite(" - Voltage : ", _LOG_TEXT);
    mikrobus_logWrite(demoText, _LOG_TEXT);
    mikrobus_logWrite(" mV ", _LOG_LINE);
    /* Capacity */
    Capacity = charger8_getCapacity();
    IntToStr(Capacity, demoText);
    mikrobus_logWrite(" - Capacity : ", _LOG_TEXT);
    mikrobus_logWrite(demoText, _LOG_TEXT);
    mikrobus_logWrite(" mAh ", _LOG_LINE);
    /* SOC */
    SOC = charger8_getSOC();
    IntToStr(SOC, demoText);
    mikrobus_logWrite(" - SOC : ", _LOG_TEXT);
    mikrobus_logWrite(demoText, _LOG_TEXT);
    mikrobus_logWrite(" % ", _LOG_LINE);
    
    mikrobus_logWrite(" -------------------------- ", _LOG_LINE);
    Delay_ms( 1500 );
}

Other mikroE Libraries used in the example:

  • I2C
  • 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.

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