LED DRIVER Click

LED driver Click carries the MCP1662 high-voltage step-up voltage driver from Microchip. The Click is designed to run on either 3.3V or 5V power supply. It communicates with the target microcontroller over PWM pin on the mikroBUS™ line

Click Product page

Click library

• Author : Nikola Peric
• Date : Feb 2022.
• Type : PWM type

Software Support

We provide a library for the LedDriver Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Package can be downloaded/installed directly form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for LedDriver Click driver.

Standard key functions :

• Config Object Initialization function.

  void leddriver_cfg_setup ( leddriver_cfg_t *cfg );

• Initialization function.

  LEDDRIVER_RETVAL leddriver_init ( leddriver_t ctx, leddriver_cfg_t cfg );

Example key functions :

Examples Description

This library contains API for the LED Driver Click driver. This application controls the brightness.

The demo application is composed of two sections :

Application Init

PWM initialization set PWM duty cycle and PWM frequency and start PWM.

void application_init ( void )
{
    log_cfg_t log_cfg;
    leddriver_cfg_t cfg;

    /** 
     * Logger initialization.
     * Default baud rate: 115200
     * Default log level: LOG_LEVEL_DEBUG
     * @note If USB_UART_RX and USB_UART_TX 
     * are defined as HAL_PIN_NC, you will 
     * need to define them manually for log to work. 
     * See @b LOG_MAP_USB_UART macro definition for detailed explanation.
     */
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, "---- Application Init ----" );

    //  Click initialization.

    leddriver_cfg_setup( &cfg );
    LEDDRIVER_MAP_MIKROBUS( cfg, MIKROBUS_1 );

    if ( LEDDRIVER_OK != leddriver_init( &leddriver, &cfg ) )
    {
        log_info( &logger, "---- Init Error ----" );
        log_info( &logger, "---- Run program again ----" );

        for ( ; ; );
    }

    log_info( &logger, "---- Init Done ----\r\n" );
    leddriver_set_duty_cycle ( &leddriver, 0.0 );
    leddriver_pwm_start( &leddriver );
    Delay_ms ( 100 );
    log_info( &logger, "---- Application Task ----\r\n" );
}

Application Task

This is an example that demonstrates the use of the LED Driver Click board. LED Driver Click communicates with register via PWM interface. This example shows the automatic control halogen bulb light intensity, the first intensity of light is rising and then the intensity of light is falling. Results are being sent to the Usart Terminal where you can track their changes.

void application_task ( void ) 
{
    static int8_t duty_cnt = 1;
    static int8_t duty_inc = 1;
    float duty = duty_cnt / 10.0;

    leddriver_set_duty_cycle ( &leddriver, duty );
    log_printf( &logger, "> Duty: %d%%\r\n", ( uint16_t )( duty_cnt * 10 ) );

    Delay_ms ( 100 );

    if ( 10 == duty_cnt ) 
    {
        duty_inc = -1;
    }
    else if ( 0 == duty_cnt ) 
    {
        duty_inc = 1;
    }
    duty_cnt += duty_inc;

}  

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.LedDriver

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.