MCP1664 click

MCP1664 click contains 4 high-power white LEDs. It carries the MCP1664, a high-voltage step-up LED driver from Microchip.

click Product page

Click library

• Author : MikroE Team
• Date : Jan 2020.
• Type : PWM type

Software Support

We provide a library for the Mcp1664 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 Mcp1664 Click driver.

Standard key functions :

• Config Object Initialization function.

  void mcp1664_cfg_setup ( mcp1664_cfg_t *cfg );

• Initialization function.

  MCP1664_RETVAL mcp1664_init ( mcp1664_t ctx, mcp1664_cfg_t cfg );

Example key functions :

• Start PWM module.

  void mcp1664_pwm_start ( mcp1664_t *ctx );

• Stop PWM module.

  void mcp1664_pwm_stop ( mcp1664_t *ctx );

Examples Description

This application turn on and turn off white LEDs.

The demo application is composed of two sections :

Application Init

Enables GPIO and PWM, sets the frequency and duty cycle and enables PWM.

void application_init ( void )
{
    log_cfg_t log_cfg;
    mcp1664_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.

    mcp1664_cfg_setup( &cfg );
    MCP1664_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    mcp1664_init( &mcp1664, &cfg );

    mcp1664_set_duty_cycle( &mcp1664, duty_cycle );
    mcp1664_pwm_start( &mcp1664 );
    Delay_ms ( 1000 );
    log_printf( &logger, "------------------ \r\n" );
    log_printf( &logger, "  MCP1664  Click   \r\n" );
    log_printf( &logger, "------------------ \r\n" );
    Delay_ms ( 100 );
}

Application Task

This is a example which demonstrates the use of MCP1664 Click board. It shows how to enable the device and gradualy increase the duty cycle.

void application_task ( void )
{
    //  Task implementation.

    if ( duty_cycle > mcp1664.pwm_period )
    {
        duty_cycle = 5000;
    }

    mcp1664_set_duty_cycle ( &mcp1664, duty_cycle );
    duty_cycle += 50;
    Delay_100ms();

    log_printf( &logger,  "  Duty cycle is : %d  \r\n", duty_cycle );
} 

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.Mcp1664

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.