Library Description

Defines and initializes driver's UART bus. Declares and defines driver's functions for sending and receiving data bytes, also for checking if data byte ready for reading.

Key functions:

• void fiberopt_writeByte(uint8_t input) - Writes sinle byte.
• uint8_t fiberopt_readByte() - Read received byte.
• uint8_t fiberopt_byteReady() - Checks is there a new byte received.

Examples description

The application is composed of three sections :

• System Initialization - Initializes UART and LOG structures.
• Application Initialization - Initalizes UART driver and makes an initial log.
• Application Task - Example can either check if new data byte is received in rx buffer (ready for reading), if ready than reads one byte from rx buffer and displays on USART terminal, or transmit message every 2 seconds.

void applicationTask()
{
    char tmp;
    uint8_t rdyFlag;

    // RECEIVER - UART polling

    rdyFlag = fiberopt_byteReady();

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

    // TRANSMITER - TX each 2 sec
    /*
    for (tmp = 0; tmp < 9; tmp++)
    {
        fiberopt_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.