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Ilya Yanok7f0d2412010-09-09 23:03:32 +02001LED display internal API
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4This README describes the LED display API.
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6The API is defined by the include file include/led-display.h
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8The first step in to define CONFIG_CMD_DISPLAY in the board config file.
9Then you need to provide the following functions to access LED display:
10
11void display_set(int cmd);
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13This function should control the state of the LED display. Argument is
14an ORed combination of the following values:
15 DISPLAY_CLEAR -- clear the display
16 DISPLAY_HOME -- set the position to the beginning of display
Ilya Yanok7f0d2412010-09-09 23:03:32 +020017
18int display_putc(char c);
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20This function should display it's parameter on the LED display in the
21current position. Returns the displayed character on success or -1 in
22case of failure.
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24With this functions defined 'display' command will display it's
25arguments on the LED display (or clear the display if called without
26arguments).