Library Description

The library initializes and defines the SPI bus driver. The library includes function for enable or disable buck device. The user also has the function for read voltage on the input and output terminal.

Key functions:

• void buck12_control(uint8_t ctrl) - Function for enable or disable device.
• float buck12_getVoltage(uint8_t selectVolt) - Function for get Voltage.

Examples description

The application is composed of three sections :

• System Initialization - Initializes SPI module and sets CS pin and RST pin as OUTPUT.
• Application Initialization - Initialization driver init and BUCK enabled.
• Application Task - Reads the voltage in [mV] at the input and output terminals. This data logs to the USBUART every 2 sec.

Note: Voltage on VIN terminal must be between 2.5V and 18V. When the BUCK is enabled - the voltage on the VOUT terminal is about 3.3V..

void applicationTask()
{
    char demoText[ 20 ];
    float Voltage;

    Voltage = buck12_getVoltage(_BUCK12_INPUT_VOLTAGE);
    
    FloatToStr(Voltage, demoText);
    mikrobus_logWrite("* VIN : ", _LOG_TEXT);
    mikrobus_logWrite(demoText, _LOG_TEXT);
    mikrobus_logWrite(" mV", _LOG_LINE);
    
    Voltage = buck12_getVoltage(_BUCK12_OUTPUT_VOLTAGE);

    FloatToStr(Voltage, demoText);
    mikrobus_logWrite("* VOUT : ", _LOG_TEXT);
    mikrobus_logWrite(demoText, _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.