CAN FD 2 click

CAN FD 2 Click is a HS CAN transceiver add on board, suitable for evaluation of TLE9255W CAN network transceiver from Infineon.

click Product page

Click library

• Author : MikroE Team
• Date : Jun 2020.
• Type : UART type

Software Support

We provide a library for the CanFd2 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 form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for CanFd2 Click driver.

Standard key functions :

• canfd2_cfg_setup Config Object Initialization function.

  void canfd2_cfg_setup ( canfd2_cfg_t *cfg );

• canfd2_init Initialization function.

  err_t canfd2_init ( canfd2_t *ctx, canfd2_cfg_t *cfg );

Example key functions :

• canfd2_generic_read Generic read function.

  int32_t canfd2_generic_read ( canfd2_t *ctx, uint8_t *data_buf, uint16_t max_len );

• canfd2_write_data Generic write the byte of data function

  void canfd2_write_data ( canfd2_t *ctx, uint8_t reg_addr, uint8_t write_data );

• canfd2_get_mode Get operating mode function

  uint8_t canfd2_get_mode ( canfd2_t *ctx );

Examples Description

This example reads and processes data from CAN FD 2 clicks.

The demo application is composed of two sections :

Application Init

Initializes the driver and configures the click board for the selected mode.

void application_init ( void )
{
    log_cfg_t log_cfg;
    canfd2_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, "---- Application Init ----" );

    //  Click initialization.

    canfd2_cfg_setup( &cfg );
    CANFD2_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    canfd2_init( &canfd2, &cfg );

    CANFD2_SET_DATA_SAMPLE_EDGE;
    Delay_ms ( 100 );

#ifdef DEMO_APP_TRANSMITTER
    canfd2_set_mode( &canfd2, CANFD2_OP_MODE_NORMAL );
    if ( CANFD2_OP_MODE_NORMAL == canfd2_get_mode ( &canfd2 ) )
    {
        log_info( &logger, "--- TRANSMITTER MODE ---" );
    }
    else
    {
        log_info( &logger, "--- ERROR ---" );
        log_printf( &logger, "Please restart your system.\r\n" );
        for ( ; ; );
    }
#else
    canfd2_set_mode( &canfd2, CANFD2_OP_MODE_RECEIVE_ONLY );
    if ( CANFD2_OP_MODE_RECEIVE_ONLY == canfd2_get_mode ( &canfd2 ) )
    {
        log_info( &logger, "--- RECEIVER MODE ---" );
    }
    else
    {
        log_info( &logger, "--- ERROR ---" );
        log_printf( &logger, "Please restart your system.\r\n" );
        for ( ; ; );
    }
#endif
    Delay_ms ( 100 );
}

Application Task

Depending on the selected mode, it reads all the received data or sends the desired message every 2 seconds.

void application_task ( void )
{
#ifdef DEMO_APP_TRANSMITTER
    canfd2_generic_write( &canfd2, DEMO_TEXT_MESSAGE, strlen ( DEMO_TEXT_MESSAGE ) );
    log_info( &logger, "--- The message is sent ---" );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
#else
    canfd2_process( &canfd2 );
    if ( app_buf_len > 0 ) 
    {
        Delay_ms ( 100 );
        canfd2_process ( &canfd2 );
        log_printf( &logger, "Received data: %s", app_buf );
        canfd2_clear_app_buf( );
    }
#endif
}

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.CanFd2

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.