Library Description

The library covers all the necessary functions to control Peltier Click board. Peltier Click communicates with the target board through the RST, CS, PWM and INT pins. This library offers functions for detecting the states of PWM and INT pins and for seting or clearing RST and CS pins.

Key functions:

• void peltier_enableLdo2(); - Function is used to enable 3.3V output.
• void peltier_enableLdo1(); - Function is used to enable 1.8V output.
• uint8_t peltier_batteryCharge(); - Function is used to check ongoing battery charge flag pin.

Examples description

The application is composed of three sections :

• System Initialization - Initializes GPIO and LOG structures, sets RST and CS pins as output and PWM and INT pins as input.
• Application Initialization - Initializes GPIO driver, disables both 1.8V and 3.3V outputs and starts write log.
• Application Task - (code snippet) This example demonstrates the use of Peltier Click board by first enableing 1.8V output, second by enableing 3.3V output, then enabling both outputs and finally disabling both outputs in 5 seconds intervals.

void applicationTask()
{
    mikrobus_logWrite( "   1.8V output    ", _LOG_LINE );
    mikrobus_logWrite( "------------------", _LOG_LINE );
    peltier_enableLdo1();
    peltier_disableLdo2();
    Delay_ms( 5000 );
    
    mikrobus_logWrite( "   3.3V output    ", _LOG_LINE );
    mikrobus_logWrite( "------------------", _LOG_LINE );
    peltier_disableLdo1();
    peltier_enableLdo2();
    Delay_ms( 5000 );
    
    mikrobus_logWrite( "   Both outputs   ", _LOG_LINE );
    mikrobus_logWrite( "------------------", _LOG_LINE );
    peltier_enableLdo1();
    peltier_enableLdo2();
    Delay_ms( 5000 );
    
    mikrobus_logWrite( " Disable  outputs ", _LOG_LINE );
    mikrobus_logWrite( "------------------", _LOG_LINE );
    peltier_disableLdo1();
    peltier_disableLdo2();
    Delay_ms( 5000 );
}

Other mikroE Libraries used in the example:

• UART

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.