/**************************************************************************** * include/nuttx/input/kbd_codec.h * Serialize and marshaling keyboard data and events * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. The * ASF licenses this file to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance with the * License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. * ****************************************************************************/ #ifndef __INCLUDE_NUTTX_INPUT_KBD_CODEC_H #define __INCLUDE_NUTTX_INPUT_KBD_CODEC_H /**************************************************************************** * Included Files ****************************************************************************/ #include #include /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ /**************************************************************************** * Public Types ****************************************************************************/ /* These are the special keyboard commands recognized by the CODEC. */ enum kbd_keycode_e { KEYCODE_NORMAL = 0, /* Not a special keycode */ /* Delete and Backspace keycodes (in case they may be different than the * ASCII BKSP and DEL values. */ KEYCODE_FWDDEL, /* DELete (forward delete) */ KEYCODE_BACKDEL, /* Backspace (backward delete) */ /* Cursor movement */ KEYCODE_HOME, /* Home */ KEYCODE_END, /* End */ KEYCODE_LEFT, /* Left arrow */ KEYCODE_RIGHT, /* Right arrow */ KEYCODE_UP, /* Up arrow */ KEYCODE_DOWN, /* Down arrow */ KEYCODE_PAGEUP, /* Page up */ KEYCODE_PAGEDOWN, /* Page down */ /* Edit commands */ KEYCODE_INSERT, /* Insert */ KEYCODE_AGAIN, /* Again */ KEYCODE_UNDO, /* Undo */ KEYCODE_REDO, /* Redo */ KEYCODE_CUT, /* Cut */ KEYCODE_COPY, /* Copy */ KEYCODE_PASTE, /* Paste */ KEYCODE_FIND, /* Find */ /* Selection codes */ KEYCODE_ENTER, /* Enter */ KEYCODE_SELECT, /* Select */ KEYCODE_EXECUTE, /* Execute */ /* Keyboard modes */ KEYCODE_CAPSLOCK, /* Caps Lock */ KEYCODE_SCROLLLOCK, /* Scroll Lock */ KEYCODE_NUMLOCK, /* Keypad Num Lock and Clear */ KEYCODE_LCAPSLOCK, /* Locking Caps Lock */ KEYCODE_LNUMLOCK, /* Locking Num Lock */ KEYCODE_LSCROLLLOCK, /* Locking Scroll Lock */ /* Misc control codes */ KEYCODE_POWER, /* Power */ KEYCODE_HELP, /* Help */ KEYCODE_MENU, /* Menu */ KEYCODE_STOP, /* Stop */ KEYCODE_PAUSE, /* Pause */ KEYCODE_BREAK, /* Break */ KEYCODE_CANCEL, /* Cancel */ KEYCODE_PRTSCRN, /* PrintScreen */ KEYCODE_SYSREQ, /* SysReq/Attention */ /* Audio */ KEYCODE_MUTE, /* Mute */ KEYCODE_VOLUP, /* Volume Up */ KEYCODE_VOLDOWN, /* Volume Down */ /* Telephone */ KEYCODE_ANSWER, /* Answer (phone) */ KEYCODE_HANGUP, /* Hang-up (phone) */ /* Calculator */ KEYCODE_CLEAR, /* Clear */ KEYCODE_CLEARENTRY, /* Clear entry */ KEYCODE_NEGATE, /* +/- */ KEYCODE_MEMSTORE, /* Memory store */ KEYCODE_MEMCLEAR, /* Memory clear */ KEYCODE_MEMRECALL, /* Memory recall */ KEYCODE_MEMADD, /* Memory add */ KEYCODE_MEMSUB, /* Memory subtract */ KEYCODE_MEMMUL, /* Memory multiply */ KEYCODE_MEMDIV, /* Memory divide */ KEYCODE_BINARY, /* Binary mode */ KEYCODE_OCTAL, /* Octal mode */ KEYCODE_DECIMAL, /* Decimal mode */ KEYCODE_HEXADECIMAL, /* Hexadecimal mode */ /* Languages */ KEYCODE_LANG1, /* LANG1 */ KEYCODE_LANG2, /* LANG2 */ KEYCODE_LANG3, /* LANG3 */ KEYCODE_LANG4, /* LANG4 */ KEYCODE_LANG5, /* LANG5 */ KEYCODE_LANG6, /* LANG6 */ KEYCODE_LANG7, /* LANG7 */ KEYCODE_LANG8, /* LANG8 */ /* Context-specific function keys */ KEYCODE_F1, /* Function key 1 */ KEYCODE_F2, /* Function key 2 */ KEYCODE_F3, /* Function key 3 */ KEYCODE_F4, /* Function key 4 */ KEYCODE_F5, /* Function key 5 */ KEYCODE_F6, /* Function key 6 */ KEYCODE_F7, /* Function key 7 */ KEYCODE_F8, /* Function key 8 */ KEYCODE_F9, /* Function key 9 */ KEYCODE_F10, /* Function key 10 */ KEYCODE_F11, /* Function key 11 */ KEYCODE_F12, /* Function key 12 */ KEYCODE_F13, /* Function key 13 */ KEYCODE_F14, /* Function key 14 */ KEYCODE_F15, /* Function key 15 */ KEYCODE_F16, /* Function key 16 */ KEYCODE_F17, /* Function key 17 */ KEYCODE_F18, /* Function key 18 */ KEYCODE_F19, /* Function key 19 */ KEYCODE_F20, /* Function key 20 */ KEYCODE_F21, /* Function key 21 */ KEYCODE_F22, /* Function key 22 */ KEYCODE_F23, /* Function key 23 */ KEYCODE_F24 /* Function key 24 */ }; #define FIRST_KEYCODE KEYCODE_FWDDEL #define LAST_KEYCODE KEYCODE_F24 /* kbd_decode() return values */ #define KBD_PRESS 0 /* Key press event */ #define KBD_RELEASE 1 /* Key release event */ #define KBD_SPECPRESS 2 /* Special key press event */ #define KBD_SPECREL 3 /* Special key release event */ #define KBD_ERROR EOF /* Error or end-of-file */ /**************************************************************************** * Public Types ****************************************************************************/ struct kbd_getstate_s { uint8_t nch; /* Number of characters in the buffer */ uint8_t ndx; /* Index to next character in the buffer */ uint8_t buf[4]; /* Buffer of ungotten data */ }; /**************************************************************************** * Public Function Prototypes ****************************************************************************/ #ifdef CONFIG_LIBC_KBDCODEC #ifdef __cplusplus extern "C" { #endif /**************************************************************************** * The following functions are intended for use by "producer", keyboard * or keypad drivers to encode information into driver buffers. ****************************************************************************/ /**************************************************************************** * Name: kbd_press * * Description: * Indicates a normal key press event. Put one byte of normal keyboard * data into the output stream. * * Input Parameters: * ch - The character to be added to the output stream. * stream - An instance of lib_outstream_s to do the low-level put * operation. * * Returned Value: * None * ****************************************************************************/ #define kbd_press(ch, stream) lib_stream_putc(stream, ch) /**************************************************************************** * Name: kbd_release * * Description: * Encode the release of a normal key. * * Input Parameters: * ch - The character associated with the key that was releared. * stream - An instance of lib_outstream_s to do the low-level put * operation. * * Returned Value: * None * ****************************************************************************/ void kbd_release(uint8_t ch, FAR struct lib_outstream_s *stream); /**************************************************************************** * Name: kbd_specpress * * Description: * Denotes a special key press event. Put one special keyboard command * into the output stream. * * Input Parameters: * keycode - The command to be added to the output stream. * stream - An instance of lib_outstream_s to do the low-level put * operation. * * Returned Value: * None * ****************************************************************************/ void kbd_specpress(enum kbd_keycode_e keycode, FAR struct lib_outstream_s *stream); /**************************************************************************** * Name: kbd_specrel * * Description: * Denotes a special key release event. Put one special keyboard * command into the output stream. * * Input Parameters: * keycode - The command to be added to the output stream. * stream - An instance of lib_outstream_s to do the low-level put * operation. * * Returned Value: * None * ****************************************************************************/ void kbd_specrel(enum kbd_keycode_e keycode, FAR struct lib_outstream_s *stream); /**************************************************************************** * The following functions are intended for use by "consumer" applications * to remove and decode information from the driver provided buffer. ****************************************************************************/ /**************************************************************************** * Name: kbd_decode * * Description: * Get one byte of data or special command from the driver provided input * buffer. * * Input Parameters: * stream - An instance of lib_instream_s to do the low-level get * operation. * pch - The location to save the returned value. This may be * either a normal, character code or a special command from enum * kbd_keycode_e * state - A user provided buffer to support parsing. This structure * should be cleared the first time that kbd_decode is called. * * Returned Value: * * KBD_PRESS - Indicates the successful receipt of normal, keyboard data. * This corresponds to a keypress event. The returned value in pch is a * simple byte of text or control data corresponding to the pressed key. * KBD_RELEASE - Indicates a key release event. The returned value in pch * is the byte of text or control data corresponding to the released key. * KBD_SPECPRESS - Indicates the successful receipt of a special keyboard * command. The returned value in pch is a value from enum kbd_getstate_s. * KBD_SPECREL - Indicates a special key release event. The returned value * in pch is a value from enum kbd_getstate_s. * EOF - An error has getting the next character (reported by the stream). * Normally indicates the end of file. * ****************************************************************************/ int kbd_decode(FAR struct lib_instream_s *stream, FAR struct kbd_getstate_s *state, FAR uint8_t *pch); #ifdef __cplusplus } #endif #endif /* CONFIG_LIBC_KBDCODEC */ #endif /* __INCLUDE_NUTTX_INPUT_KBD_CODEC_H */