rn4871

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RN4871 Click

RN4871 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 : MikroE Team
• Date : jun 2020.
• Type : UART GSM/IOT type

Software Support

Example Description

This example reads and processes data from RN4871 Clicks.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Rn4871

Example Key Functions

• rn4871_cfg_setup Config Object Initialization function.

void rn4871_cfg_setup ( rn4871_cfg_t *cfg );

• rn4871_init Initialization function.

err_t rn4871_init ( rn4871_t *ctx, rn4871_cfg_t *cfg );

• rn4871_read This function gets message from 'void rn4871_receive function if flag was set. This function replaces '*' (character with end of string) with '0x00' and stores received message to process_buffer.

uint8_t rn4871_read ( rn4871_t *ctx, uint8_t *process_buffer );

• rn4871_receive The function receives character by waits for '#' - character to start parsing message, waits for '*' - character to stop parsing message and sets flag if whole and properly formated message is received.

void rn4871_receive ( rn4871_t *ctx, char tmp );

• rn4871_connect The function connects to slave device with desired register address by secures the connection and entering data stream mode.

void rn4871_connect ( rn4871_t *ctx, char *p_addr );

Application Init

Initializes UART driver. Initializes device and parser.

void application_init ( void )
{
    log_cfg_t log_cfg;
    rn4871_cfg_t cfg;

    /** 
     * Logger initialization.
     * Default baud rate: 115200
     * Default log level: LOG_LEVEL_DEBUG
     * @note If USB_UART_RX and USB_UART_TX 
     * are defined as HAL_PIN_NC, you will 
     * need to define them manually for log to work. 
     * See @b LOG_MAP_USB_UART macro definition for detailed explanation.
     */
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, "---- Application Init ----" );

    //  Click initialization.

    rn4871_cfg_setup( &cfg );
    RN4871_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    rn4871_init( &rn4871, &cfg );

    dev_type = RN4871_DEVICETYPE_MASTER;

    if ( dev_type == RN4871_DEVICETYPE_MASTER )
    {
        rn4871_initialize( &rn4871, &RN4871_ADDR_MASTER[ 0 ] );
    }
    else if ( dev_type == RN4871_DEVICETYPE_SLAVE )
    {
        rn4871_initialize( &rn4871, &RN4871_ADDR_SLAVE[ 0 ] );
        ptr = &receive_buffer[ 7 ];
    }

    memset( &rn4871.device_buffer, 0, 255 );
    log_printf( &logger, " >>> app init done <<<  \r\n" );
}

Application Task

If 'MASTER' - connects to 'SLAVE', sends message and disconnects. If 'SLAVE' - waits for connect request and message from 'MASTER' and LOGs received message.

void application_task ( void )
{
    rn4871_process(  );
    if ( dev_type == RN4871_DEVICETYPE_MASTER )
    {
        rn4871_connect( &rn4871, &RN4871_ADDR_SLAVE[ 0 ] );
        log_printf( &logger, ">>> sending data  <<<\r\n" );
        rn4871_send( &rn4871, RN4871_MTYPE_MSG, RN4871_DTYPE_STRING, RN4871_ID_MASTER, &message_payload[ 0 ] );
        rn4871_disconnect( &rn4871 );
    }
    else if ( dev_type == RN4871_DEVICETYPE_SLAVE )
    {
        msg_flag = rn4871_read( &rn4871, &receive_buffer[ 0 ] );

        if ( msg_flag == 1 )
        {
            log_printf( &logger, ">>> data received <<<\r\n" );
            log_printf( &logger, ">>> data : " );
            log_printf( &logger, "%s\r\n", ptr );     
        }
    }
}

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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