mcp2517fd

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MCP2517FD Click

MCP2517FD 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 : Oct 2021.
• Type : SPI type

Software Support

Example Description

This example demonstrates the use of an MCP2517FD Click board by showing the communication between the two Click boards configured as a receiver and transmitter.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.MCP2517FD

Example Key Functions

• mcp2517fd_cfg_setup Config Object Initialization function.

void mcp2517fd_cfg_setup ( mcp2517fd_cfg_t *cfg );

• mcp2517fd_init Initialization function.

err_t mcp2517fd_init ( mcp2517fd_t *ctx, mcp2517fd_cfg_t *cfg );

• mcp2517fd_default_cfg Click Default Configuration function.

err_t mcp2517fd_default_cfg ( mcp2517fd_t *ctx );

• mcp2517fd_transmit_message Transmits the desired message and checks is message successfully sent.

err_t mcp2517fd_transmit_message ( mcp2517fd_t *ctx, uint8_t *data_in, uint16_t data_len );

• mcp2517fd_receive_message Receives the message and checks is message successfully received.

err_t mcp2517fd_receive_message ( mcp2517fd_t *ctx, uint8_t *data_out, uint16_t *data_len );

• mcp2517fd_reset Function for reset using generic transfer

err_t mcp2517fd_reset ( mcp2517fd_t *ctx );

Application Init

Initializes the driver and logger, performs the Click default configuration and displays the selected application mode.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    mcp2517fd_cfg_t mcp2517fd_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.
    mcp2517fd_cfg_setup( &mcp2517fd_cfg );
    MCP2517FD_MAP_MIKROBUS( mcp2517fd_cfg, MIKROBUS_1 );
    if ( SPI_MASTER_ERROR == mcp2517fd_init( &mcp2517fd, &mcp2517fd_cfg ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    if ( MCP2517FD_ERROR == mcp2517fd_default_cfg ( &mcp2517fd ) )
    {
        log_error( &logger, " Default configuration." );
        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 sends a desired message using CAN protocol or reads all the received data and displays them on the USB UART.

void application_task ( void )
{
#ifdef DEMO_APP_TRANSMITTER
    if ( MCP2517FD_OK == mcp2517fd_transmit_message( &mcp2517fd, DEMO_TEXT_MESSAGE, strlen( DEMO_TEXT_MESSAGE ) ) )
    {
        log_printf( &logger, " The message \"%s\" has been sent!\r\n", ( char * ) DEMO_TEXT_MESSAGE );
    }
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
#else
    uint8_t data_buf[ 256 ] = { 0 };
    uint16_t data_len = 0;
    if ( MCP2517FD_OK == mcp2517fd_receive_message( &mcp2517fd, data_buf, &data_len ) )
    {
        log_printf( &logger, " A new message has received: \"" );
        for ( uint16_t cnt = 0; cnt < data_len; cnt++ )
        {
            log_printf( &logger, "%c", data_buf[ cnt ] );
        }
        log_printf( &logger, "\"\r\n" );
    }
#endif
}

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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