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  • LED display internal API
    =======================================
    
    This README describes the LED display API.
    
    The API is defined by the include file include/led-display.h
    
    The first step in to define CONFIG_CMD_DISPLAY in the board config file.
    Then you need to provide the following functions to access LED display:
    
    void display_set(int cmd);
    
    This function should control the state of the LED display. Argument is
    an ORed combination of the following values:
     DISPLAY_CLEAR	-- clear the display
     DISPLAY_HOME	-- set the position to the beginning of display
    
    int display_putc(char c);
    
    This function should display it's parameter on the LED display in the
    current position. Returns the displayed character on success or -1 in
    case of failure.
    
    With this functions defined 'display' command will display it's
    arguments on the LED display (or clear the display if called without
    arguments).