scanner

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Scanner Click

Scanner 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 : MikroE Team
• Date : Jun 2020.
• Type : GPIO type

Software Support

Example Description

This example reads data from Scanner Clicks.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Scanner

Example Key Functions

• scanner_cfg_setup Config Object Initialization function.

void scanner_cfg_setup ( scanner_cfg_t *cfg );

• scanner_init Initialization function.

err_t scanner_init ( scanner_t *ctx, scanner_cfg_t *cfg );

• scanner_clock Pulse function.

void scanner_clock ( scanner_t *ctx );

• scanner_serial_write_reg Write function.

void scanner_serial_write_reg ( scanner_t *ctx, uint8_t reg_adr, uint8_t write_data );

• scanner_read_pixel Read pixels.

void scanner_read_pixel ( scanner_t *ctx, uint8_t *pixel_data );

Application Init

Initializes the driver and starts up the module.

void application_init ( void )
{
    log_cfg_t log_cfg;
    scanner_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, "--->>> APP INIT <<<---\r\n" );

    //  Click initialization.

    scanner_cfg_setup( &cfg );
    SCANNER_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    scanner_init( &scanner, &cfg );

    Delay_ms ( 300 );

    scanner_startup( &scanner );
    Delay_ms ( 100 );
    
    scanner_serial_write_reg( &scanner, SCANNER_REG_MODE, SCANNER_DATA_NORMAL_MODE );
    
    for ( uint8_t data_cnt = 0; data_cnt < 3; )
    {
        scanner_serial_write_reg( &scanner, SCANNER_REG_OFFSET_LEFT + ( 2 * data_cnt ), 25 );
        data_cnt++;
        scanner_serial_write_reg( &scanner, SCANNER_REG_GAIN_LEFT + ( 2 * data_cnt ), 25 );
        data_cnt++;
    }
    log_printf( &logger, "--->>> APP TASK <<<--- \r\n" );
}

Application Task

Reads the array of 102 pixels and displays the results on the USB UART as frequently as possible.

void application_task ( void )
{
    uint8_t pixels[ 102 ];
    scanner_read_pixel( &scanner, pixels );
    
    log_printf( &logger, "left center right\r\n" );
    for ( uint8_t cnt = 0; cnt < 34; cnt++ )
    {
        log_printf( &logger, " %u   %u   %u \r\n", ( uint16_t ) pixels[ cnt ], 
                                                   ( uint16_t ) pixels[ cnt + 34 ], 
                                                   ( uint16_t ) pixels[ cnt + 68 ] );
    }
    log_printf( &logger, "----------------\r\n" );
}

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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