rs232

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RS232 Click

RS232 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 : Apr 2020.
• Type : UART GPS/GNSS type

Software Support

Example Description

This example reads and processes data from RS232 Clicks.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Rs232

Example Key Functions

• rs232_cfg_setup Config Object Initialization function.

void rs232_cfg_setup ( rs232_cfg_t *cfg );

• rs232_init Initialization function.

err_t rs232_init ( rs232_t *ctx, rs232_cfg_t *cfg );

• rs232_generic_write Generic write function.

void rs232_generic_write ( rs232_t *ctx, char *data_buf, uint16_t len );

• rs232_generic_read Generic read function.

int32_t rs232_generic_read ( rs232_t *ctx, char *data_buf, uint16_t max_len );

Application Init

Initializes driver.

void application_init ( void )
{
    log_cfg_t log_cfg;
    rs232_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.

    rs232_cfg_setup( &cfg );
    RS232_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    rs232_init( &rs232, &cfg );
    
    Delay_ms ( 100 );
#ifdef RS232_RECEIVER
    log_printf( &logger, " ** RS232 Receiver **\r\n" );
#endif
    
#ifdef RS232_TRANSMITTER
    log_printf( &logger, " ** RS232 Transmitter **\r\n" );
#endif
}

Application Task

Depending on the selected mode (receiver/transmitter) this function reads/sends an appropriate message. All data is displayed on USB UART.

void application_task ( void )
{
#ifdef RS232_RECEIVER
    rsp_size = rs232_generic_read( &rs232, uart_rx_buffer, PROCESS_RX_BUFFER_SIZE );

    if ( rsp_size == strlen( message ) )
    {  
        log_printf( &logger, "Message received: %s", uart_rx_buffer );
        log_printf( &logger, "\r\n-------------------------\r\n" );
        memset( uart_rx_buffer, 0, rsp_size );
    }  
    Delay_ms ( 100 );
#endif
    
#ifdef RS232_TRANSMITTER
    rs232_generic_write( &rs232, message, strlen( message ) );
    log_printf( &logger, "Message sent: %s", message );
    log_printf( &logger, "\r\n-------------------------\r\n" );
    Delay_ms ( 1000 );
#endif   
}

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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