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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
/* Copyright 2021 Drashna Jael're
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include QMK_KEYBOARD_H
#include "rgb_functions.h"
#ifdef RGBLIGHT_ENABLE
# include "ws2812.h"
# include <avr/interrupt.h>
# include <avr/io.h>
# include <util/delay.h>
# define pinmask(pin) (_BV((pin)&0xF))
/*
* Forward declare internal functions
*
* The functions take a byte-array and send to the data output as WS2812 bitstream.
* The length is the number of bytes to send - three per LED.
*/
static inline void ws2812_sendarray_mask(uint8_t *data, uint16_t datlen, uint8_t masklo, uint8_t maskhi);
/*
This routine writes an array of bytes with RGB values to the Dataout pin
using the fast 800kHz clockless WS2811/2812 protocol.
*/
// Timing in ns
# define w_zeropulse 350
# define w_onepulse 900
# define w_totalperiod 1250
// Fixed cycles used by the inner loop
# define w_fixedlow 2
# define w_fixedhigh 4
# define w_fixedtotal 8
// Insert NOPs to match the timing, if possible
# define w_zerocycles (((F_CPU / 1000) * w_zeropulse) / 1000000)
# define w_onecycles (((F_CPU / 1000) * w_onepulse + 500000) / 1000000)
# define w_totalcycles (((F_CPU / 1000) * w_totalperiod + 500000) / 1000000)
// w1_nops - nops between rising edge and falling edge - low
# if w_zerocycles >= w_fixedlow
# define w1_nops (w_zerocycles - w_fixedlow)
# else
# define w1_nops 0
# endif
// w2_nops - nops between fe low and fe high
# if w_onecycles >= (w_fixedhigh + w1_nops)
# define w2_nops (w_onecycles - w_fixedhigh - w1_nops)
# else
# define w2_nops 0
# endif
// w3_nops - nops to complete loop
# if w_totalcycles >= (w_fixedtotal + w1_nops + w2_nops)
# define w3_nops (w_totalcycles - w_fixedtotal - w1_nops - w2_nops)
# else
# define w3_nops 0
# endif
// The only critical timing parameter is the minimum pulse length of the "0"
// Warn or throw error if this timing can not be met with current F_CPU settings.
# define w_lowtime ((w1_nops + w_fixedlow) * 1000000) / (F_CPU / 1000)
# if w_lowtime > 550
# error "Light_ws2812: Sorry, the clock speed is too low. Did you set F_CPU correctly?"
# elif w_lowtime > 450
# warning "Light_ws2812: The timing is critical and may only work on WS2812B, not on WS2812(S)."
# warning "Please consider a higher clockspeed, if possible"
# endif
# define w_nop1 "nop \n\t"
# define w_nop2 "rjmp .+0 \n\t"
# define w_nop4 w_nop2 w_nop2
# define w_nop8 w_nop4 w_nop4
# define w_nop16 w_nop8 w_nop8
static inline void ws2812_sendarray_mask(uint8_t *data, uint16_t datlen, uint8_t masklo, uint8_t maskhi) {
uint8_t curbyte, ctr, sreg_prev;
sreg_prev = SREG;
cli();
while (datlen--) {
curbyte = (*data++);
asm volatile(" ldi %0,8 \n\t"
"loop%=: \n\t"
" out %2,%3 \n\t" // '1' [01] '0' [01] - re
# if (w1_nops & 1)
w_nop1
# endif
# if (w1_nops & 2)
w_nop2
# endif
# if (w1_nops & 4)
w_nop4
# endif
# if (w1_nops & 8)
w_nop8
# endif
# if (w1_nops & 16)
w_nop16
# endif
" sbrs %1,7 \n\t" // '1' [03] '0' [02]
" out %2,%4 \n\t" // '1' [--] '0' [03] - fe-low
" lsl %1 \n\t" // '1' [04] '0' [04]
# if (w2_nops & 1)
w_nop1
# endif
# if (w2_nops & 2)
w_nop2
# endif
# if (w2_nops & 4)
w_nop4
# endif
# if (w2_nops & 8)
w_nop8
# endif
# if (w2_nops & 16)
w_nop16
# endif
" out %2,%4 \n\t" // '1' [+1] '0' [+1] - fe-high
# if (w3_nops & 1)
w_nop1
# endif
# if (w3_nops & 2)
w_nop2
# endif
# if (w3_nops & 4)
w_nop4
# endif
# if (w3_nops & 8)
w_nop8
# endif
# if (w3_nops & 16)
w_nop16
# endif
" dec %0 \n\t" // '1' [+2] '0' [+2]
" brne loop%=\n\t" // '1' [+3] '0' [+4]
: "=&d"(ctr)
: "r"(curbyte), "I"(_SFR_IO_ADDR(PORTx_ADDRESS(RGBLIGHT_DI_PIN))), "r"(maskhi), "r"(masklo));
}
SREG = sreg_prev;
}
void rgblight_call_driver(LED_TYPE *start_led, uint8_t num_leds) {
DDRx_ADDRESS(RGBLIGHT_DI_PIN) |= pinmask(RGBLIGHT_DI_PIN);
uint8_t masklo = ~(pinmask(RGBLIGHT_DI_PIN)) & PORTx_ADDRESS(RGBLIGHT_DI_PIN);
uint8_t maskhi = pinmask(RGBLIGHT_DI_PIN) | PORTx_ADDRESS(RGBLIGHT_DI_PIN);
ws2812_sendarray_mask((uint8_t *)start_led, num_leds * sizeof(LED_TYPE), masklo, maskhi);
_delay_us(WS2812_TRST_US);
}
#endif
#ifdef RGB_MATRIX_ENABLE
bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
if (!process_record_user(keycode, record)) { return false; }
if (record->event.pressed) {
switch(keycode) {
case RGB_MATRIX_TOGGLE: // toggle rgb matrix
rgb_matrix_toggle();
return false;
case RGB_MATRIX_MODE_INC:
rgb_matrix_step();
return false;
case RGB_MATRIX_MODE_DEC:
rgb_matrix_step_reverse();
return false;
case RGB_MATRIX_HUE_INC:
rgb_matrix_increase_hue();
return false;
case RGB_MATRIX_HUE_DEC:
rgb_matrix_decrease_hue();
return false;
case RGB_MATRIX_SAT_INC:
rgb_matrix_increase_sat();
return false;
case RGB_MATRIX_SAT_DEC:
rgb_matrix_decrease_sat();
return false;
case RGB_MATRIX_VAL_INC:
rgb_matrix_increase_val();
return false;
case RGB_MATRIX_VAL_DEC:
rgb_matrix_decrease_val();
return false;
default:
break;
}
}
return true;
}
#endif
|
