39 lines
1.1 KiB
C
39 lines
1.1 KiB
C
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// Basic support for ADB keyboard
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#ifndef ADB_BLARGG_H
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#define ADB_BLARGG_H
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#include <stdint.h>
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#include <stdbool.h>
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// Sets up ADB bus. Doesn't send anything to keyboard.
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void adb_host_init( void );
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// Receives key press event from keyboard.
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// 0xKKFF: one key changed state
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// 0xKKKK: two keys changed state
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enum { adb_host_nothing = 0 }; // no keys changed state
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enum { adb_host_error = 0xFFFE }; // receive error
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uint16_t adb_host_kbd_recv( void );
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// Current state of keyboard modifiers and a few other keys
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// Returns adb_host_nothing if keyboard didn't respond.
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// Returns adb_host_error if error receiving.
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uint16_t adb_host_kbd_modifiers( void );
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// Sends command and two bytes of data to keyboard
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void adb_host_listen( uint8_t cmd, uint8_t data_h, uint8_t data_l );
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// Sets keyboard LEDs. Note that bits are inverted here, so 1 means off, 0 means on.
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void adb_host_kbd_led( uint8_t led );
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// State of power switch (false = pressed), or true if unsupported
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bool adb_host_psw( void );
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// Legacy support
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#define ADB_POWER 0x7F
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#define ADB_CAPS 0x39
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#endif
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