mcp2003b

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MCP2003B Click

MCP2003B 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 : Feb 2024.
• Type : UART type

Software Support

Example Description

This example demonstrates the use of an MCP2003B Click board by showing the communication between the two Click board configured as a receiver and transmitter.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.MCP2003B

Example Key Functions

• mcp2003b_cfg_setup Config Object Initialization function.

void mcp2003b_cfg_setup ( mcp2003b_cfg_t *cfg );

• mcp2003b_init Initialization function.

err_t mcp2003b_init ( mcp2003b_t *ctx, mcp2003b_cfg_t *cfg );

• mcp2003b_generic_write This function writes a desired number of data bytes by using UART serial interface.

err_t mcp2003b_generic_write ( mcp2003b_t *ctx, uint8_t *data_in, uint16_t len );

• mcp2003b_generic_read This function reads a desired number of data bytes by using UART serial interface.

err_t mcp2003b_generic_read ( mcp2003b_t *ctx, uint8_t *data_out, uint16_t len );

• mcp2003b_set_cs_pin This function sets the chip select (CS) pin logic state.

void mcp2003b_set_cs_pin ( mcp2003b_t *ctx, uint8_t state );

Application Init

Initializes the driver and logger and displays the selected application mode.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    mcp2003b_cfg_t mcp2003b_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.
    mcp2003b_cfg_setup( &mcp2003b_cfg );
    MCP2003B_MAP_MIKROBUS( mcp2003b_cfg, MIKROBUS_1 );
    if ( UART_ERROR == mcp2003b_init( &mcp2003b, &mcp2003b_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
#ifdef DEMO_APP_TRANSMITTER
    log_printf( &logger, " Application Mode: Transmitter\r\n" );
#else
    log_printf( &logger, " Application Mode: Receiver\r\n" );
#endif
    log_info( &logger, " Application Task " );
}

Application Task

Depending on the selected mode, it reads all the received data or sends the desired message every 3 seconds.

void application_task ( void )
{
#ifdef DEMO_APP_TRANSMITTER
    mcp2003b_generic_write( &mcp2003b, DEMO_TEXT_MESSAGE, strlen( DEMO_TEXT_MESSAGE ) );
    log_printf( &logger, "%s", ( char * ) DEMO_TEXT_MESSAGE );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 ); 
#else
    uint8_t rx_data = 0;
    if ( mcp2003b_generic_read( &mcp2003b, &rx_data, 1 ) > 0 )
    {
        log_printf( &logger, "%c", rx_data );
    }
#endif
}

Note

The Click boards should be connected as follows: VBB->VBB, LBUS->LBUS, GND->GND. The communication power supply voltage provided on VBB pin should be in range from 5.5V to 30V.

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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