Library Description

The library covers all the necessary functions to control RN4870Click board.

Key functions:

• void rn4870_writeByte( uint8_t input ) - Write Single Byte.
• uint8_t rn4870_readByte() - Check for new byte received.
• uint8_t rn4870_byteReady() - Read Single Byte.

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 - This is an example which demonstrates the use of RN4870 Click board. If 'MASTER' - connects to 'SLAVE', sends message and disconnects. If 'SLAVE' - waits for connect request and message from 'MASTER' and LOGs received a message. Results are being sent to the Usart Terminal where you can track their changes.

void applicationTask()
{
    if ( devType == _RN4870_DEVICETYPE_MASTER )
    {
        rn4870_connect( &RN4678_ADDR_SLAVE1[ 0 ] );
        rn4870_send( _RN4678_MTYPE_MSG, _RN4678_DTYPE_STRING, _RN4678_ID_SLAVE, &MESSAGE_DATA[ 0 ] );
        mikrobus_logWrite( "    Message Send    ", _LOG_LINE );
        rn4870_disconnect();
    }
    else if ( devType == _RN4870_DEVICETYPE_SLAVE )
    {
        msgFlag = rn4870_read( &MESSAGE_DATA[ 0 ] );

        if ( msgFlag == 1 )
        {
            mikrobus_logWrite( logText, _LOG_LINE );
        }
    }
}

Other mikroE Libraries used in the example:

• UART
• Conversion

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.