DC Motor 15 click

DC Motor 15 Click is a compact add-on board that contains a motor driver with current sense and regulation. This board features the DRV8874, an integrated motor driver with N-channel H-bridge, charge pump, current sensing, and adjustment from Texas Instruments.

click Product page

Click library

• Author : Stefan Filipovic
• Date : Jun 2021.
• Type : ADC type

Software Support

We provide a library for the DCMotor15 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 from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for DCMotor15 Click driver.

Standard key functions :

• dcmotor15_cfg_setup Config Object Initialization function.

  void dcmotor15_cfg_setup ( dcmotor15_cfg_t *cfg );

• dcmotor15_init Initialization function.

  DCMOTOR15_RETVAL dcmotor15_init ( dcmotor15_t *ctx, dcmotor15_cfg_t *cfg );

• dcmotor15_default_cfg Click Default Configuration function.

  void dcmotor15_default_cfg ( dcmotor15_t *ctx );

Example key functions :

• dcmotor15_forward This function drives the motor forward.

  void dcmotor15_forward ( dcmotor15_t *ctx );

• dcmotor15_reverse This function drives the motor in reverse.

  void dcmotor15_reverse ( dcmotor15_t *ctx );

• dcmotor15_get_current This function reads the motor current consumption by performing analog to digital read of IPR pin.

  float dcmotor15_get_current ( dcmotor15_t *ctx, uint16_t num_of_conv );

Example Description

This example demonstrates the use of DC Motor 15 click board.

The demo application is composed of two sections :

Application Init

Initializes the driver and makes an initial log.

void application_init ( void )
{
    log_cfg_t log_cfg;              /**< Logger config object. */
    dcmotor15_cfg_t dcmotor15_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 );
    Delay_ms ( 100 );
    log_info( &logger, " Application Init " );

    // Click initialization.

    dcmotor15_cfg_setup( &dcmotor15_cfg );
    DCMOTOR15_MAP_MIKROBUS( dcmotor15_cfg, MIKROBUS_1 );
    if ( ADC_ERROR == dcmotor15_init( &dcmotor15, &dcmotor15_cfg ) )
    {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    }
    dcmotor15_default_cfg ( &dcmotor15 );
    log_info( &logger, " Application Task " );
}

Application Task

Drives the motor in the forward direction for 5 seconds, then pulls brake for 2 seconds, and after that drives it in the reverse direction for 5 seconds, and finally, disconnects the motor for 2 seconds. It will also calculates and displays the motor current consumption. Each step will be logged on the USB UART where you can track the program flow.

void application_task ( void )
{
    log_printf( &logger, " The motor turns forward! \r\n" );
    dcmotor15_forward( &dcmotor15 );
    display_current ( &dcmotor15, RUN_PERIOD );
    log_printf( &logger, " Pull brake! \r\n" );
    dcmotor15_brake( &dcmotor15 );
    display_current ( &dcmotor15, IDLE_PERIOD );
    log_printf( &logger, " The motor turns in reverse! \r\n" );
    dcmotor15_reverse( &dcmotor15 );
    display_current ( &dcmotor15, RUN_PERIOD );
    log_printf( &logger, " The motor is disconnected (High-Z)!  \r\n" );
    dcmotor15_stop( &dcmotor15 );
    display_current ( &dcmotor15, IDLE_PERIOD );
}

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.DCMotor15

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. UART terminal is available in all MikroElektronika compilers.