MCP2517FD click

MCP2517FD click is a complete CAN solution which carries the MCP2517FD CAN FD controller and ATA6563 high-speed CAN transceiver from Microchip, as well as a DB9 9-pin connector.

click Product page

Click library

• Author : Mikroe Team
• Date : Oct 2021.
• Type : SPI type

Software Support

We provide a library for the MCP2517FD 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 MCP2517FD Click driver.

Standard 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 );

Example key functions :

• 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 );

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.

The demo application is composed of two sections :

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
}

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.MCP2517FD

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. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.