canlinsbc

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CAN-LIN SBC Click

CAN-LIN SBC 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.

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Click Library

• Author : Stefan Filipovic
• Date : Jan 2025.
• Type : SPI type

Software Support

Example Description

This example demonstrates the use of an CAN-LIN SBC Click board by showing the communication between the two Click boards.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.CANLINSBC

Example Key Functions

• canlinsbc_cfg_setup Config Object Initialization function.

  void canlinsbc_cfg_setup ( canlinsbc_cfg_t *cfg );

• canlinsbc_init Initialization function.

  err_t canlinsbc_init ( canlinsbc_t *ctx, canlinsbc_cfg_t *cfg );

• canlinsbc_default_cfg Click Default Configuration function.

  err_t canlinsbc_default_cfg ( canlinsbc_t *ctx );

• canlinsbc_generic_write This function writes a specified number of bytes to the CAN LIN SBC device using UART communication.

  err_t canlinsbc_generic_write ( canlinsbc_t *ctx, uint8_t *data_in, uint16_t len );

• canlinsbc_generic_read This function reads a specified number of bytes from the CAN LIN SBC device using UART communication.

  err_t canlinsbc_generic_read ( canlinsbc_t *ctx, uint8_t *data_out, uint16_t len );

Application Init

Initializes the driver and logger, and performs the Click default configuration.

void application_init ( void )
{
    log_cfg_t log_cfg;  
    canlinsbc_cfg_t canlinsbc_cfg;  

    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, " Application Init " );
 
    // Click initialization.
    canlinsbc_cfg_setup( &canlinsbc_cfg );
    CANLINSBC_MAP_MIKROBUS( canlinsbc_cfg, MIKROBUS_1 );
    if ( SPI_MASTER_ERROR == canlinsbc_init( &canlinsbc, &canlinsbc_cfg ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    if ( CANLINSBC_ERROR == canlinsbc_default_cfg ( &canlinsbc ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }
 
#ifdef DEMO_APP_TRANSMITTER
    log_printf( &logger, " Application Mode: Transmitter\r\n" );
#else
    log_printf( &logger, " Application Mode: Receiver\r\n" );
#endif
 
    log_info( &logger, " Application Task " );
}

Application Task

Depending on the selected application mode, it reads all the received data or sends the desired message once per second.

void application_task ( void )
{
#ifdef DEMO_APP_TRANSMITTER
    canlinsbc_generic_write( &canlinsbc, DEMO_TEXT_MESSAGE, strlen( DEMO_TEXT_MESSAGE ) );
    log_printf( &logger, "%s", ( char * ) DEMO_TEXT_MESSAGE );
    Delay_ms( 1000 );
#else
    uint8_t rx_data = 0;
    if ( canlinsbc_generic_read( &canlinsbc, &rx_data, 1 ) > 0 )
    {
        log_printf( &logger, "%c", rx_data );
    }
#endif
}

Note

Ensure the two Click boards are connected properly using an RS232 cable and a 12V external power supply is provided to the VEXT pin.

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.

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