canfd

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CAN FD Click

CAN FD Click is a add-on board based on TLE9252V CAN network transceiver, designed for HS CAN networks up to 5 Mbit/s in automotive and industrial applications.

Click Product page

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Click library

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

Software Support

We provide a library for the CanFd 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 CanFd Click driver.

Standard key functions :

• Config Object Initialization function.

void canfd_cfg_setup ( canfd_cfg_t *cfg );

• Initialization function.

CANFD_RETVAL canfd_init ( canfd_t *ctx, canfd_cfg_t *cfg );

Example key functions :

• Generic write function.

void canfd_generic_write ( canfd_t *ctx, char *data_buf, uint16_t len );

• Generic read function.

int32_t canfd_generic_read ( canfd_t *ctx, char *data_buf, uint16_t max_len );

• Operation mode.

void canfd_set_operating_mode ( canfd_t *ctx, uint8_t op_mode );

Examples Description

This example reads and processes data from CAN FD 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;
    canfd_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.

    canfd_cfg_setup( &cfg );
    CANFD_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    canfd_init( &canfd, &cfg );

    Delay_ms ( 500 );

#ifdef DEMO_APP_RECEIVER
    canfd_set_operating_mode( &canfd, CANFD_OPERATING_MODE_RECEIVE );
    log_info( &logger, "--- RECEIVER MODE ---" );
#endif
#ifdef DEMO_APP_TRANSMITTER
    canfd_set_operating_mode( &canfd, CANFD_OPERATING_MODE_NORMAL );
    log_info( &logger, "--- TRANSMITTER MODE ---" );
#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_RECEIVER
    canfd_process( );
#endif
#ifdef DEMO_APP_TRANSMITTER
    canfd_generic_write( &canfd, 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 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.CanFd

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.

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