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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
- DISPLAY_MARK -- enable mark (decimal point), if implemented
- 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).
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