Library Description

The library covers all the necessary functions to control eFuse 2 Click board™. Library performs a standard I2C interface communication.

Key functions:

• float *min_voltage, float *max_voltage ) - Set operating voltage function.
• void efuse2_set_operating_current ( float current ) - Set operating current function.
• void efuse2_operating_mode ( uint8_t mode ) - Set operating mode function.

Examples description

The application is composed of three sections :

• System Initialization - Initializes I2C, set RST pin as an output, set INT pin as input and start to write log.
• Application Initialization - Initialization driver enables - I2C, AD5175: enable write, set the normal operating mode and operating current to the 1,2 A; AD5241: set operating voltage to the 12,0 V; display diagnostic states and temperature.
• Application Task - (code snippet) This is an example that demonstrate the use of the eFuse 2 Click board™. eFuse 2 Click board™ uses USB UART log to display operating voltage, OVLO, UVLO and current limit condition. This firmware provides the functions to set the operating voltage and current limiting conditions in order to provide the threshold of the fault conditions. When one of the fault conditions is met, the microcontroller is notified via INT pin which is checked by the app to initiate a shutdown mode. All data logs write on USB UART changes every 2000 milliseconds.

void application_task ( )
{
    if ( efuse2_get_fault( ) == EFUSE2_FAULT )
    {
        efuse2_operating_mode( EFUSE2_AD5175_SHUTDOWN_MODE );
        Delay_ms( 1000 );

        mikrobus_logWrite( "        Shutdown Mode        ", _LOG_LINE );
        mikrobus_logWrite( "-----------------------------", _LOG_LINE );
        for ( ; ; );
    }

    FloatToStr( op_voltage, log_text );
    mikrobus_logWrite( " Oper. Voltage : ", _LOG_TEXT );
    mikrobus_logWrite( log_text, _LOG_TEXT );
    mikrobus_logWrite( " V", _LOG_LINE );

    FloatToStr( min_voltage, log_text );
    mikrobus_logWrite( " Undervoltage  : ", _LOG_TEXT );
    mikrobus_logWrite( log_text, _LOG_TEXT );
    mikrobus_logWrite( " V", _LOG_LINE );

    FloatToStr( max_voltage, log_text );
    mikrobus_logWrite( " Overvoltage   : ", _LOG_TEXT );
    mikrobus_logWrite( log_text, _LOG_TEXT );
    mikrobus_logWrite( " V", _LOG_LINE );

    FloatToStr( op_current, log_text );
    mikrobus_logWrite( " Current Limit : ", _LOG_TEXT );
    mikrobus_logWrite( log_text, _LOG_TEXT );
    mikrobus_logWrite( " A", _LOG_LINE );
    mikrobus_logWrite( "-----------------------------", _LOG_LINE );
    Delay_ms( 2000 );
}

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.