Library Description

This library carries functions for data transmission and reception alongside with functions for individual control of each GPIO pin found on RS232 2 click.

Key functions

uint8_t rs232_2_readByte()- Reads received byte

void rs232_2_writeByte(uint8_t input)- Sends byte

uint8_t rs232_2_byteReady()-Checks for received byte

Examples Description

The application is composed of three sections :

• System Initialization - Intializes RST, CS, PWM pin as OUTPUT and INT, AN pin as INPUT and UART module Application Initialization - Driver initialization
• Application Task - (code snippet) - Checks if new data byte has been received in RX buffer (ready for reading),
  and if ready than reads one byte from the RX buffer. In second case aplication task writes message data via UART.

void applicationTask()
{
    uint8_t tmp;
    char rec;
    uint8_t rdyFlag;
// RECEIVER - UART polling 

    rdyFlag = rs232_2_byteReady();

    if (1 == rdyFlag)
    {
        rec = rs232_2_readByte();
        mikrobus_logWrite( &rec, _LOG_BYTE );
    }

// TRANSMITER - TX each 2 sec
/*  
    for (tmp = 0; tmp < 9; tmp++)
    {
        rs232_2_writeByte( MESSAGE_DATA[tmp] );
        mikrobus_logWrite( "MESSAGE SENT", _LOG_LINE );
    }

    Delay_ms(2000);
*/
}

MikroElektronika Libraries used in the example:

• UART