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Servo Click

Servo 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.

Click Library

  • Author : MikroE Team
  • Date : Jan 2020.
  • Type : I2C type

Software Support

Example Description

This app shows how the servo motor can be controled by the Click board.

Example Libraries

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.Servo

Example Key Functions

  • servo_cfg_setup Config Object Initialization function.
void servo_cfg_setup ( servo_cfg_t *cfg );
  • servo_init Initialization function.
err_t servo_init ( servo_t *ctx, servo_cfg_t *cfg );
  • servo_default_cfg Click Default Configuration function.
void servo_default_cfg ( servo_t *ctx );
  • servo_set_vref This function settings Vref of Servo Clicks.
void servo_set_vref ( servo_t *ctx, uint16_t v_ref );
  • servo_set_position This function sets position.
void servo_set_position ( servo_t *ctx, uint8_t motor, uint8_t position );
  • setvo_get_current This function reads the current value of Servo Click witch motor spends.
uint16_t setvo_get_current ( servo_t *ctx, uint8_t channel );

Application Init

Initializes device.

void application_init ( void )
{
    log_cfg_t log_cfg;
    servo_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.

    servo_cfg_setup( &cfg );
    SERVO_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    servo_init( &servo, &cfg );
    
    servo_default_cfg( &servo );
}

Application Task

The servo motor at CH1 rotate in clockwise and counter clockwise directions.

void application_task ( void )
{
    log_printf( &logger, "<<< Counter clockwise >>>\r\n" );
    Delay_1sec( );
    
    for ( cnt = servo.min_pos; cnt <= servo.max_pos; cnt++ )
    {
        servo_set_position( &servo, SERVO_MOTOR_1, cnt );
        log_printf( &logger, "Position : %u \r\n", ( uint16_t ) cnt );
        Delay_10ms( );
    }
    
    log_printf( &logger, "-----------------------------\r\n" );
    
    log_printf( &logger, "<<< Clockwise >>>\r\n" );
    Delay_1sec( );
    
    for ( cnt = servo.max_pos; cnt >= servo.min_pos; cnt-- )
    {
        servo_set_position( &servo, SERVO_MOTOR_1, cnt );
        log_printf( &logger, "Position : %u \r\n", ( uint16_t ) cnt );
        Delay_10ms( );
    }
}

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.