leddriver11

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LED Driver 11 Click

LED Driver 11 Click demo application is developed using the NECTO Studio, ensuring compatibility with mikroSDK's open-source libraries and tools. Designed for plug-and-play implementation and testing, the demo is fully compatible with all development, starter, and mikromedia boards featuring a mikroBUS™ socket.

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Click Library

• Author : Stefan Filipovic
• Date : Jul 2021.
• Type : I2C type

Software Support

Example Description

This example demonstrates the use of LED Driver 11 Click board.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.LEDDriver11

Example Key Functions

• leddriver11_cfg_setup Config Object Initialization function.

void leddriver11_cfg_setup ( leddriver11_cfg_t *cfg );

• leddriver11_init Initialization function.

err_t leddriver11_init ( leddriver11_t *ctx, leddriver11_cfg_t *cfg );

• leddriver11_default_cfg Click Default Configuration function.

err_t leddriver11_default_cfg ( leddriver11_t *ctx );

• leddriver11_pwm_start This function starts the PWM moudle output.

err_t leddriver11_pwm_start ( leddriver11_t *ctx );

• leddriver11_set_current This function sets the LEDs current via a 12-bit DAC module.

err_t leddriver11_set_current ( leddriver11_t *ctx, uint16_t curr );

• leddriver11_set_duty_cycle This function sets the PWM duty cycle in percentages ( Range[ 0..1 ] ).

err_t leddriver11_set_duty_cycle ( leddriver11_t *ctx, float duty_cycle );

Application Init

Initializes the driver and executes the Click default configuration which starts the PWM module and sets the LEDs current to minimum.

void application_init ( void )
{
    log_cfg_t log_cfg;                  /**< Logger config object. */
    leddriver11_cfg_t leddriver11_cfg;  /**< Click config object. */

    /** 
     * 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.
    leddriver11_cfg_setup( &leddriver11_cfg );
    LEDDRIVER11_MAP_MIKROBUS( leddriver11_cfg, MIKROBUS_POSITION_LEDDRIVER11 );
    err_t init_flag = leddriver11_init( &leddriver11, &leddriver11_cfg );
    if ( I2C_MASTER_ERROR == init_flag ) 
    {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    }

    leddriver11_default_cfg ( &leddriver11 );
    log_printf( &logger, " Dimming the LEDs light...\r\n" );
}

Application Task

Controls the LEDs brightness by changing the PWM duty cycle. The PWM duty cycle percentage will be logged on the USB UART.

void application_task ( void )
{
    static int16_t duty_cnt = 1;
    static int8_t duty_inc = 1;
    float duty = duty_cnt / 10.0;
    
    leddriver11_set_duty_cycle ( &leddriver11, duty );
    log_printf( &logger, "> Duty: %u%%\r\n", ( uint16_t )( duty_cnt * 10 ) );
    
    Delay_ms ( 500 );
    
    if ( 10 == duty_cnt ) 
    {
        duty_inc = -1;
    }
    else if ( 0 == duty_cnt ) 
    {
        duty_inc = 1;
    }
    duty_cnt += duty_inc;
}

Application Output

This Click board can be interfaced and monitored in two ways:

• Application Output - Use the "Application Output" window in Debug mode for real-time data monitoring. Set it up properly by following this tutorial.
• UART Terminal - Monitor data via the UART Terminal using a USB to UART converter. For detailed instructions, check out this tutorial.

Additional Notes and Information

The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.

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