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\mainpage Main Page

CAN FD4 Click

The CAN FD 4 Click is a Click board™ that features the NCV7344D10R2G, a Controller Area Network (CAN) transceiver, from ON Semiconductor.

Click Product page

Click library

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

Software Support

We provide a library for the CanFd4 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 compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for CanFd4 Click driver.

Standard key functions :

  • Config Object Initialization function.

void canfd4_cfg_setup ( canfd4_cfg_t *cfg );

  • Initialization function.

CANFD4_RETVAL canfd4_init ( canfd4_t *ctx, canfd4_cfg_t *cfg );

Example key functions :

  • Generic write function.

void canfd4_generic_write ( canfd4_t *ctx, char *data_buf, uint16_t len );

  • Set mode function.

void canfd4_set_dev_mode ( canfd4_t *ctx, uint8_t mode );

  • Generic read function.

int32_t canfd4_generic_read ( canfd4_t *ctx, char *data_buf, uint16_t max_len );

Examples Description

This example reads and processes data from CAN FD 4 clicks.

The demo application is composed of two sections :

Application Init

Initializes the driver and enables the Click board.

void application_init ( void )
{
    log_cfg_t log_cfg;
    canfd4_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.

    canfd4_cfg_setup( &cfg );
    CANFD4_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    canfd4_init( &canfd4, &cfg );

    canfd4_set_dev_mode ( &canfd4, CANFD4_NORMAL_MODE );
    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_RECEIVER
    canfd4_process( );
#endif
#ifdef DEMO_APP_TRANSMITTER
    canfd4_generic_write( &canfd4, TEXT_TO_SEND, 8 );
    log_info( &logger, "--- The message is sent ---" );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
#endif 
}

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

Other mikroE Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.CanFd4

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.