canfd2

---

CAN FD 2 Click

CAN FD 2 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.

---

Click Library

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

Software Support

Example Description

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

Example Libraries

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

Example 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 );

• 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 );

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
}

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.

---