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git.gir.st - tmk_keyboard.git/blob - protocol/pjrc/usb_keyboard.c
1 /* USB Keyboard Plus Debug Channel Example for Teensy USB Development Board
2 * http://www.pjrc.com/teensy/usb_keyboard.html
3 * Copyright (c) 2009 PJRC.COM, LLC
5 * Permission is hereby granted, free of charge, to any person obtaining a copy
6 * of this software and associated documentation files (the "Software"), to deal
7 * in the Software without restriction, including without limitation the rights
8 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 * copies of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 #include <avr/interrupt.h>
25 #include <avr/pgmspace.h>
27 #include "usb_keyboard.h"
34 // protocol setting from the host. We use exactly the same report
35 // either way, so this variable only stores the setting since we
36 // are required to be able to report which setting is in use.
37 uint8_t usb_keyboard_protocol
=1;
39 // the idle configuration, how often we send the report to the
40 // host (ms * 4) even when it hasn't changed
41 // Windows and Linux set 0 while OS X sets 6(24ms) by SET_IDLE request.
42 uint8_t usb_keyboard_idle_config
=125;
44 // count until idle timeout
45 uint8_t usb_keyboard_idle_count
=0;
47 // 1=num lock, 2=caps lock, 4=scroll lock, 8=compose, 16=kana
48 volatile uint8_t usb_keyboard_leds
=0;
51 static inline int8_t send_report(report_keyboard_t
*report
, uint8_t endpoint
, uint8_t keys_start
, uint8_t keys_end
);
54 int8_t usb_keyboard_send_report(report_keyboard_t
*report
)
60 result
= send_report(report
, KBD2_ENDPOINT
, 0, KBD2_SIZE
);
64 if (usb_keyboard_protocol
)
65 result
= send_report(report
, KBD_ENDPOINT
, 0, KBD_SIZE
);
67 result
= send_report(report
, KBD_ENDPOINT
, 0, 6);
70 if (result
) return result
;
71 usb_keyboard_idle_count
= 0;
72 usb_keyboard_print_report(report
);
76 void usb_keyboard_print_report(report_keyboard_t
*report
)
78 if (!debug_keyboard
) return;
80 for (int i
= 0; i
< REPORT_KEYS
; i
++) { phex(report
->keys
[i
]); print(" "); }
81 print(" mods: "); phex(report
->mods
); print("\n");
85 static inline int8_t send_report(report_keyboard_t
*report
, uint8_t endpoint
, uint8_t keys_start
, uint8_t keys_end
)
87 uint8_t intr_state
, timeout
;
89 if (!usb_configured()) return -1;
93 timeout
= UDFNUML
+ 50;
95 // are we ready to transmit?
96 if (UEINTX
& (1<<RWAL
)) break;
98 // has the USB gone offline?
99 if (!usb_configured()) return -1;
100 // have we waited too long?
101 if (UDFNUML
== timeout
) return -1;
102 // get ready to try checking again
107 for (uint8_t i
= keys_start
; i
< keys_end
; i
++) {
108 UEDATX
= report
->raw
[i
];