1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
#include "WProgram.h"
#include "keys.h"
// [esc] [ ~ ] [ 1 ] [ 2 ] [ 3 ] [ 4 ] [ 5 ] [ 6 ] [ 7 ] [ 8 ] [ 9 ] [ 0 ] [ - ] [ + ]
// [ \ ] [ / ] [ q ] [ w ] [ f ] [ p ] [ g ] [ j ] [ l ] [ u ] [ y ] [ ; ] [ [ ] [ ] ]
// [ shift ] [ a ] [ r ] [ s ] [ t ] [ d ] [ tab ] [ h ] [ n ] [ e ] [ i ] [ o ] [ shift ]
// [control] [ z ] [ x ] [ c ] [ v ] [ b ] [ bkspc ] [ k ] [ m ] [ , ] [ . ] [ ' ] [control]
// [ meta ] [ ] [ layout] [ alt ] [ ret ] [ space ] [layout ] [ altgr ] [ meta ]
uint8_t keymap[3][7][15] = {
{ // qwerty
{K_ESC, K_TILDE, K_1, K_2, K_3, K_4, K_5, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, K_6, K_7, K_8, K_9, K_0, K_MINUS, K_EQUAL},
{K_BSLASH, K_SLASH, K_Q, K_W, K_E, K_R, K_T, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, K_Y, K_U, K_I, K_O, K_P, K_LBRACE, K_RBRACE},
{0, 0, K_A, K_S, K_D, K_F, K_G, K_TAB, K_H, K_J, K_K, K_L, K_SCOL, 0, 0},
{0, 0, K_Z, K_X, K_C, K_V, K_B, K_BSPC, K_N, K_M, K_COMMA, K_DOT, K_QUOTE, 0, 0},
{0, 0, 0, 0, 0, 0, 0, K_RET, K_SPC, 0, 0, 0, 0, 0, 0}
},
{ // mostly functional keys
// ESC, DEL, and F*
{K_ESC, K_DEL, K_F1, K_F2, K_F3, K_F4, K_F5, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, K_F6, K_F7, K_F8, K_F9, K_F10, K_F11, K_F12},
// nothing for now
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
// hjkl-style navigation keys
{0, 0, 0, K_HOME, K_PGUP, K_PGDN, K_END, K_TAB, K_LEFT, K_DOWN, K_UP, K_RIGHT, 0, 0, 0},
// nothing for now
{0, 0, 0, 0, 0, 0, 0, K_BSPC,0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, K_RET, K_SPC, 0, 0, 0, 0, 0, 0}
},
{ // colemak
{K_ESC, K_TILDE, K_1, K_2, K_3, K_4, K_5, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, K_6, K_7, K_8, K_9, K_0, K_MINUS, K_EQUAL},
{K_BSLASH, K_SLASH, K_Q, K_W, K_F, K_P, K_G, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, K_J, K_L, K_U, K_Y, K_SCOL, K_LBRACE, K_RBRACE},
{0, 0, K_A, K_R, K_S, K_T, K_D, K_TAB, K_H, K_N, K_E, K_I, K_O, 0, 0},
{0, 0, K_Z, K_X, K_C, K_V, K_B, K_BSPC, K_K, K_M, K_COMMA, K_DOT, K_QUOTE, 0, 0},
{0, 0, 0, 0, 0, 0, 0, K_RET, K_SPC, 0, 0, 0, 0, 0, 0}
}
};
uint8_t p[7][15]; // pressed keys
uint8_t prev_keys[6] = {0,0,0,0,0,0}, prev_modifiers = 0;
uint8_t layout = 0;
uint8_t layout_state = 0;
int type () {
uint8_t i, j, ret = 0, k = 0, send = 0, cur_layout = layout;
// Set modifiers
keyboard_modifier_keys =
p[5][1] // left ctrl
| (p[4][1] << 1) // left shift
| (p[6][6] << 2) // left alt
| (p[6][1] << 3) // left "gui"
| (p[5][14] << 4) // right ctrl
| (p[4][14] << 5) // right shift
| (p[6][12] << 6) // right alt
| (p[6][14] << 7) // right "gui"
;
// Handle layout keys
if (p[6][5] && p[6][10]) {
if (layout_state == 0) {
// Cycle through layouts. Perhaps should track the order in
// which Fn keys are pressed, to determine the direction.
layout = (layout + 1) % 3;
cur_layout = layout;
layout_state = 1;
}
} else if (p[6][5] || p[6][10]) {
// Set the functional layout temporary
cur_layout = 1;
} else {
layout_state = 0;
}
// Fill keyboard_keys
for (i = 0; i < 7; i++){
for (j = 0; j < 15; j++){
if (p[i][j] && k < 6) {
if (keymap[layout][i][j]) {
keyboard_keys[k] = keymap[cur_layout][i][j];
k++;
}
}
}
}
while (k < 6) {
keyboard_keys[k] = 0;
k++;
}
// Compare it to the previously sent keys, send if they differ
for (k = 0; k < 6; k++)
if (prev_keys[k] != keyboard_keys[k])
send = 1;
if (prev_modifiers != keyboard_modifier_keys)
send = 1;
if (send)
ret = usb_keyboard_send();
prev_modifiers = keyboard_modifier_keys;
for (k = 0; k < 6; k++)
prev_keys[k] = keyboard_keys[k];
return ret;
}
extern "C" int main(void) {
uint8_t i = 0, j = 0, s = 0;
uint8_t row_pins[7] = {2, 23, 9, 17, 13, 12, 11};
uint8_t col_pins[15] = {10, 8, 7, 3, 4, 5, 6, 14, 20, 21, 22, 19, 18, 16, 15};
for (i=0; i < 7; i ++) {
pinMode(row_pins[i], OUTPUT);
digitalWriteFast(row_pins[i], LOW);
}
for (i=0; i < 15; i ++) {
pinMode(col_pins[i], INPUT_PULLDOWN);
}
while (1) {
for (i = 0; i < 7; i++) {
digitalWriteFast(row_pins[i], HIGH);
for (j = ((i == 1 || i == 3) ? 8 : 0);
j < ((i == 0 || i == 2) ? 7 : 15);
j++)
{
s = digitalReadFast(col_pins[j]);
p[i][j] = s;
}
digitalWriteFast(row_pins[i], LOW);
}
type();
delay(5);
}
}
|
