使用 SP3221E 和 ATmega328P 构建可靠的串行通信系统

/*!
 * @file main.c
 * @brief RS232 3 Click Example.
 *
 * # Description
 * This example demonstrates the use of an RS232 3 click board by showing
 * the communication between the two click board configured as a receiver and transmitter.
 *
 * The demo application is composed of two sections :
 *
 * ## Application Init
 * Initializes the driver and logger and displays the selected application mode.
 *
 * ## Application Task
 * Depending on the selected mode, it reads all the received data or 
 * sends the desired message every 3 seconds.
 * 
 * @author Stefan Filipovic
 *
 */

#include "board.h"
#include "log.h"
#include "rs2323.h"

// Comment out the line below in order to switch the application mode to receiver
#define DEMO_APP_TRANSMITTER

#define DEMO_TEXT_MESSAGE           "MikroE - RS232 3 click board\r\n"

static rs2323_t rs2323;
static log_t logger;

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    rs2323_cfg_t rs2323_cfg;  /**< Click config object. */

    /** 
     * 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.
    rs2323_cfg_setup( &rs2323_cfg );
    RS2323_MAP_MIKROBUS( rs2323_cfg, MIKROBUS_1 );
    if ( UART_ERROR == rs2323_init( &rs2323, &rs2323_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
#ifdef DEMO_APP_TRANSMITTER
    log_printf( &logger, " Application Mode: Transmitter\r\n" );
#else
    log_printf( &logger, " Application Mode: Receiver\r\n" );
#endif   
    log_info( &logger, " Application Task " );
}

void application_task ( void ) 
{
#ifdef DEMO_APP_TRANSMITTER
    rs2323_generic_write( &rs2323, DEMO_TEXT_MESSAGE, strlen( DEMO_TEXT_MESSAGE ) );
    log_printf( &logger, "%s", ( char * ) DEMO_TEXT_MESSAGE );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 ); 
#else
    uint8_t rx_data;
    if ( rs2323_generic_read( &rs2323, &rx_data, 1 ) > 0 )
    {
        log_printf( &logger, "%c", rx_data );
    }
#endif
}

int main ( void ) 
{
    /* Do not remove this line or clock might not be set correctly. */
    #ifdef PREINIT_SUPPORTED
    preinit();
    #endif
    
    application_init( );
    
    for ( ; ; ) 
    {
        application_task( );
    }

    return 0;
}

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