printer

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Printer Click

Printer 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 : Stefan Filipovic
• Date : Oct 2024.
• Type : UART type

Software Support

Example Description

This example demonstrates the use of Printer Click board by providing user interaction with a thermal printer, allowing the user to check paper status, display commands, and execute various printing tasks based on user commands through a UART interface.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Printer

Example Key Functions

• printer_cfg_setup Config Object Initialization function.

  void printer_cfg_setup ( printer_cfg_t *cfg );

• printer_init Initialization function.

  err_t printer_init ( printer_t *ctx, printer_cfg_t *cfg );

• printer_default_cfg Click Default Configuration function.

  err_t printer_default_cfg ( printer_t *ctx );

• printer_get_status This function reads the paper status and temperature of the printer and stores results in ctx->status string buffer.

  err_t printer_get_status ( printer_t *ctx );

• printer_get_fw_info This function reads the firmware information of the printer and stores results in ctx->fw_info string buffer.

  err_t printer_get_fw_info ( printer_t *ctx );

• printer_print_string_lf This function prints a string message with line feed.

  err_t printer_print_string_lf ( printer_t *ctx, char *data_in );

Application Init

Initializes the driver, performs the Click default configuration, and displays the list of supported commands on the USB UART.

void application_init ( void )
{
    log_cfg_t log_cfg;  
    printer_cfg_t printer_cfg;  

    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, " Application Init " );
 
    // Click initialization.
    printer_cfg_setup( &printer_cfg );
    PRINTER_MAP_MIKROBUS( printer_cfg, MIKROBUS_POSITION_PRINTER );
    if ( UART_ERROR == printer_init( &printer, &printer_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    if ( PRINTER_ERROR == printer_default_cfg ( &printer ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }
 
    printer_display_commands ( );
    log_info( &logger, " Application Task " );
}

Application Task

Checks the paper status and processes user commands.

void application_task ( void )
{
    uint8_t command = 0;
    printer_check_paper ( &printer );
    if ( 1 == log_read ( &logger, &command, 1 ) ) 
    {
        printer_parse_command ( &printer, command );
    }
}

Note

The default printer head type is set to LTP02-245-13.

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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