CAN FD 7 Click

CAN FD 7 Click is a compact add-on board that contains a CAN transceiver that supports both CAN and CAN FD protocols. This board features the TCAN1462, an automotive fault-protected CAN FD transceiver from Texas Instruments. It is a high-speed Controller Area Network (CAN) transceiver that meets the ISO 11898-2:2016 high-speed CAN specification and the CiA 601-4 signal improvement capability (SIC) specification.

Click Product page

Click library

• Author : Stefan Ilic
• Date : Sep 2023.
• Type : UART type

Software Support

We provide a library for the CAN FD 7 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 CAN FD 7 Click driver.

Standard key functions :

• canfd7_cfg_setup Config Object Initialization function.

  void canfd7_cfg_setup ( canfd7_cfg_t *cfg );

• canfd7_init Initialization function.

  err_t canfd7_init ( canfd7_t *ctx, canfd7_cfg_t *cfg );

• canfd7_default_cfg Click Default Configuration function.

  void canfd7_default_cfg ( canfd7_t *ctx );

Example key functions :

• canfd7_generic_write CAN FD 7 data writing function.

  err_t canfd7_generic_write ( canfd7_t *ctx, uint8_t *data_in, uint16_t len ) 

• canfd7_generic_read CAN FD 7 data reading function.

  err_t canfd7_generic_read ( canfd7_t *ctx, uint8_t *data_out, uint16_t len );

• canfd7_set_stb_pin CAN FD 7 set STB pin function.

  void canfd7_set_stb_pin ( canfd7_t *ctx, uint8_t pin_state );

Example Description

This example writes and reads and processes data from CAN FD 7 Click. The library also includes a function for selection of the output polarity.

The demo application is composed of two sections :

Application Init

Initializes the driver and performs the Click default configuration.

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    canfd7_cfg_t canfd7_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.
    canfd7_cfg_setup( &canfd7_cfg );
    CANFD7_MAP_MIKROBUS( canfd7_cfg, MIKROBUS_1 );
    if ( UART_ERROR == canfd7_init( &canfd7, &canfd7_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    canfd7_default_cfg ( &canfd7 );

#ifdef DEMO_APP_TRANSMITTER
    log_info( &logger, "---- Transmitter mode ----" );
#else
    log_info( &logger, "---- Receiver mode ----" );
#endif 

    log_info( &logger, " Application Task " );
}

Application Task

This example contains Transmitter/Receiver task depending on uncommented code. Receiver logs each received byte to the UART for data logging, while the transmitter sends messages every 2 seconds.

void application_task ( void ) 
{
#ifdef DEMO_APP_TRANSMITTER
    canfd7_generic_write( &canfd7, TX_MESSAGE, strlen( TX_MESSAGE ) );
    log_info( &logger, "---- Data sent ----" );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
#else
    canfd7_process( &canfd7 );
#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.CANFD7

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. UART terminal is available in all MikroElektronika compilers.