1 #include <avr/interrupt.h>
2 #include <avr/pgmspace.h>
3 #include "usb_keycodes.h"
4 #include "usb_keyboard.h"
10 static usb_keyboard_report_t _report0
= { {0,0,0,0,0,0}, 0 };
11 static usb_keyboard_report_t _report1
= { {0,0,0,0,0,0}, 0 };
12 usb_keyboard_report_t
*usb_keyboard_report
= &_report0
;
13 usb_keyboard_report_t
*usb_keyboard_report_back
= &_report1
;
15 // protocol setting from the host. We use exactly the same report
16 // either way, so this variable only stores the setting since we
17 // are required to be able to report which setting is in use.
18 uint8_t usb_keyboard_protocol
=1;
20 // the idle configuration, how often we send the report to the
21 // host (ms * 4) even when it hasn't changed
22 uint8_t usb_keyboard_idle_config
=125;
24 // count until idle timeout
25 uint8_t usb_keyboard_idle_count
=0;
27 // 1=num lock, 2=caps lock, 4=scroll lock, 8=compose, 16=kana
28 volatile uint8_t usb_keyboard_leds
=0;
31 int8_t usb_keyboard_send(void)
33 return usb_keyboard_send_report(usb_keyboard_report
);
37 int8_t usb_keyboard_send_report(usb_keyboard_report_t
*report
)
39 uint8_t i
, intr_state
, timeout
;
41 if (!usb_configured()) return -1;
44 UENUM
= KEYBOARD_ENDPOINT
;
45 timeout
= UDFNUML
+ 50;
47 // are we ready to transmit?
48 if (UEINTX
& (1<<RWAL
)) break;
50 // has the USB gone offline?
51 if (!usb_configured()) return -1;
52 // have we waited too long?
53 if (UDFNUML
== timeout
) return -1;
54 // get ready to try checking again
57 UENUM
= KEYBOARD_ENDPOINT
;
59 UEDATX
= report
->mods
;
62 UEDATX
= report
->keys
[i
];
65 usb_keyboard_idle_count
= 0;
68 report
->is_sent
=true;
70 usb_keyboard_print_report(report
);
74 void usb_keyboard_swap_report(void) {
75 usb_keyboard_report_t
*tmp
= usb_keyboard_report_back
;
76 usb_keyboard_report_back
= usb_keyboard_report
;
77 usb_keyboard_report
= tmp
;
80 void usb_keyboard_clear_report(void) {
81 usb_keyboard_clear_keys();
82 usb_keyboard_clear_mods();
83 usb_keyboard_report
->is_sent
= false;
86 void usb_keyboard_clear_keys(void) {
87 for (int i
= 0; i
< 6; i
++) usb_keyboard_report
->keys
[i
] = 0;
90 void usb_keyboard_clear_mods(void)
92 usb_keyboard_report
->mods
= 0;
95 void usb_keyboard_add_code(uint8_t code
)
98 usb_keyboard_add_mod(code
);
100 usb_keyboard_add_key(code
);
104 void usb_keyboard_add_key(uint8_t code
)
106 for (int i
= 0; i
< 6; i
++) {
107 if (!usb_keyboard_report
->keys
[i
]) {
108 usb_keyboard_report
->keys
[i
] = code
;
114 void usb_keyboard_set_keys(uint8_t keys
[6])
116 for (int i
= 0; i
< 6; i
++)
117 usb_keyboard_report
->keys
[i
] = keys
[i
];
120 void usb_keyboard_set_mods(uint8_t mods
)
122 usb_keyboard_report
->mods
= mods
;
125 void usb_keyboard_add_mod(uint8_t code
)
127 usb_keyboard_report
->mods
|= MOD_BIT(code
);
130 void usb_keyboard_del_code(uint8_t code
)
133 usb_keyboard_del_mod(code
);
135 usb_keyboard_del_key(code
);
139 void usb_keyboard_del_key(uint8_t code
)
141 for (int i
= 0; i
< 6; i
++) {
142 if (usb_keyboard_report
->keys
[i
] == code
) {
143 usb_keyboard_report
->keys
[i
] = KB_NO
;
149 void usb_keyboard_del_mod(uint8_t code
)
151 usb_keyboard_report
->mods
&= ~MOD_BIT(code
);
154 bool usb_keyboard_is_sent(void)
156 return usb_keyboard_report
->is_sent
;
159 bool usb_keyboard_has_key(void)
162 for (int i
= 0; i
< 6; i
++) keys
|= usb_keyboard_report
->keys
[i
];
163 return keys
? true : false;
166 bool usb_keyboard_has_mod(void)
168 return usb_keyboard_report
->mods
? true : false;
171 void usb_keyboard_print_report(usb_keyboard_report_t
*report
)
173 if (!debug_keyboard
) return;
175 for (int i
= 0; i
< 6; i
++) { phex(report
->keys
[i
]); print(" "); }
176 print(" mods: "); phex(report
->mods
); print("\n");