Library Description

The library covers all the necessary functions to control CAN Isolator Click board.

Key functions:

• void canisolator_writeByte(uint8_t input) - Write Single Byte.
• uint8_t canisolator_readByte() - Read Single Byte.
• uint8_t canisolator_byteReady() - Check for new byte received.

Examples description

The application is composed of the three sections :

• System Initialization - Initializes UART and LOG structures and start to write log.
• Application Initialization - Initialization driver enables - UART, also write log.
• Application Task - Checks if new data byte has received in RX buffer ( ready for reading ), and if ready than reads one byte from RX buffer. In the second case, the application task writes message data via UART. Results are being sent to the Usart Terminal where you can track their changes.

void applicationTask()
{
    char tmp;
    uint8_t rdyFlag;

// RECEIVER - UART polling 
    rdyFlag = canisolator_byteReady();

    if (1 == rdyFlag)
    {
        tmp = canisolator_readByte();
        mikrobus_logWrite( &tmp, _LOG_BYTE );
    }

// TRANSMITER - TX each 2 sec
/*  
    for (tmp = 0; tmp < 9; tmp++)
    {
        canisolator_writeByte( MESSAGE_DATA[tmp] );
        mikrobus_logWrite( "MESSAGE SENT", _LOG_LINE );
    }

    Delay_ms(2000);
*/
}

Other mikroE Libraries used in the example:

• UART​

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.