rs4856

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RS485 6 Click

RS485 6 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 RS485 6 Clicks.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Rs4856

Example Key Functions

• rs4856_cfg_setup Config Object Initialization function.

void rs4856_cfg_setup ( rs4856_cfg_t *cfg );

• rs4856_init Initialization function.

err_t rs4856_init ( rs4856_t *ctx, rs4856_cfg_t *cfg );

• rs4856_generic_read Generic read function.

uint16_t rs4856_generic_read ( rs4856_t *ctx, char *data_buf, uint16_t max_len );

• rs4856_re_pin_set Sets RE pin to high or low state.

void rs4856_re_pin_set ( rs4856_t *ctx,  uint8_t pin_state );

• rs4856_de_pin_set Sets DE pin to high or low state.

void rs4856_de_pin_set ( rs4856_t *ctx,  uint8_t pin_state );

Application Init

Initializes driver.

void application_init ( void )
{
    log_cfg_t log_cfg;
    rs4856_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.

    rs4856_cfg_setup( &cfg );
    RS4856_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    rs4856_init( &rs4856, &cfg );

#ifdef DEMO_APP_RECEIVER
    rs4856_re_pin_set( &rs4856, RS4856_PIN_STATE_LOW );
    rs4856_de_pin_set( &rs4856, RS4856_PIN_STATE_LOW );
#endif

#ifdef DEMO_APP_TRANSMITER
    rs4856_re_pin_set( &rs4856, RS4856_PIN_STATE_HIGH );
    rs4856_de_pin_set( &rs4856, RS4856_PIN_STATE_HIGH );
#endif  
    log_info( &logger, " Start sending info" );  
}

Application Task

Reads the received data.

void application_task ( void )
{
#ifdef DEMO_APP_RECEIVER
    rs4856_process( );
#endif    
    
#ifdef DEMO_APP_TRANSMITER
    rs4856_send_command( &rs4856, TEXT_TO_SEND );
    rs4856_process( );
    Delay_ms ( 1000 );
    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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