-
Notifications
You must be signed in to change notification settings - Fork 10
/
Copy pathled_setup.h
146 lines (119 loc) · 4.6 KB
/
led_setup.h
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
#define ROWS 8 // NeoPixel LED strand is connected to this pin
#define COLS 32 // NeoPixel LED strand is connected to this pin
#define LED_PIN 22 // NeoPixel LED strand is connected to this pin
#define SAMPLES 128 // Length of buffer for dynamic level adjustment
#define BRIGHTNESS 32
#include <Adafruit_GFX.h>
#include <Adafruit_NeoMatrix.h>
#include <Adafruit_NeoPixel.h>
Adafruit_NeoMatrix matrix = Adafruit_NeoMatrix(COLS, ROWS, LED_PIN,
NEO_MATRIX_TOP + NEO_MATRIX_RIGHT + NEO_MATRIX_COLUMNS + NEO_MATRIX_ZIGZAG,
NEO_GRB + NEO_KHZ800);
byte volCount = 0;
int
vol[6][SAMPLES],
minLvlAvg[6],
maxLvlAvg[6],
minLvl[6],
maxLvl[6],
height[6];
/*
Input a value 0 to 255 to get a color value.
The colors are a transition r - g - b - back to r.
*/
uint32_t Wheel(byte WheelPos) {
if(WheelPos < 85) {
return matrix.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
} else if(WheelPos < 170) {
WheelPos -= 85;
return matrix.Color(255 - WheelPos * 3, 0, WheelPos * 3);
} else {
WheelPos -= 170;
return matrix.Color(0, WheelPos * 3, 255 - WheelPos * 3);
}
}
// uint32_t colors[6] = {
// Wheel(180),
// Wheel(150),
// Wheel(210),
// Wheel(230),
// Wheel(120),
// Wheel(80)
// };
void led_setup() {
for( uint8_t i = 0; i<6; i++ ){
minLvlAvg[i] = 0; // For dynamic adjustment of graph low & high
maxLvlAvg[i] = 16;
}
matrix.begin();
matrix.setBrightness(BRIGHTNESS);
matrix.fillScreen(matrix.Color(0, 0, 0));
matrix.show();
}
void led_show(uint16_t * buckets, uint8_t log_level){
if(log_level==1){
char s[100];
sprintf(s," %05d %05d %05d %05d %05d %05d", buckets[0], buckets[1], buckets[2], buckets[3], buckets[4], buckets[5]);
SerialUSB.print(s);
}
matrix.fillScreen(matrix.Color(0, 0, 0));
for (uint8_t i = 0; i < 6; i++) { // For each of the 6 useful octave bins
// Calculate bar height based on dynamic min/max levels (fixed point):
height[i] = ROWS * ( buckets[i] - minLvlAvg[i] ) / (long)( maxLvlAvg[i] - minLvlAvg[i] );
if(height[i] < 0L) height[i] = 0; // Clip output
else if(height[i] > ROWS) height[i] = ROWS;
vol[i][volCount] = buckets[i]; // Save sample for dynamic leveling
// Get volume range of prior frames
minLvl[i] = maxLvl[i] = vol[i][0];
for(uint8_t j=1; j<SAMPLES; j++) {
if(vol[i][j] < minLvl[i]) minLvl[i] = vol[i][j];
else if(vol[i][j] > maxLvl[i]) maxLvl[i] = vol[i][j];
}
if((maxLvl[i] - minLvl[i]) < ROWS) maxLvl[i] = minLvl[i] + ROWS;
minLvlAvg[i] = (minLvlAvg[i] * 63 + minLvl[i]) >> 6; // Dampen min/max levels
maxLvlAvg[i] = (maxLvlAvg[i] * 63 + maxLvl[i]) >> 6; // (fake rolling average)
for(uint8_t y = 0; y < ROWS ; y++){
if( y < height[i] ){
// matrix.drawPixel(5*i+1,y,colors[i]);
// matrix.drawPixel(5*i+2,y,colors[i]);
// matrix.drawPixel(5*i+3,y,colors[i]);
// matrix.drawPixel(5*i+4,y,colors[i]);
// matrix.drawPixel(5*i+5,y,colors[i]);
matrix.drawPixel(5*i+1,y,Wheel(map(5*i,0,32,210,100)));
matrix.drawPixel(5*i+2,y,Wheel(map(5*i,0,32,210,100)));
matrix.drawPixel(5*i+3,y,Wheel(map(5*i,0,32,210,100)));
matrix.drawPixel(5*i+4,y,Wheel(map(5*i,0,32,210,100)));
matrix.drawPixel(5*i+5,y,Wheel(map(5*i,0,32,210,100)));
}
}
}
if(++volCount >= SAMPLES) volCount = 0; // Advance/rollover sample counter
matrix.show();
}
void led_show_32(uint16_t * buckets, uint8_t log_level){
matrix.fillScreen(matrix.Color(0, 0, 0));
for (uint8_t i = 0; i < 32; i++) {
// Calculate bar height based on dynamic min/max levels (fixed point):
height[i] = ROWS * ( buckets[i] - minLvlAvg[i] ) / (long)( maxLvlAvg[i] - minLvlAvg[i] );
if(height[i] < 0L) height[i] = 0; // Clip output
else if(height[i] > ROWS) height[i] = ROWS;
vol[i][volCount] = buckets[i]; // Save sample for dynamic leveling
// Get volume range of prior frames
minLvl[i] = maxLvl[i] = vol[i][0];
for(uint8_t j=1; j<SAMPLES; j++) {
if(vol[i][j] < minLvl[i]) minLvl[i] = vol[i][j];
else if(vol[i][j] > maxLvl[i]) maxLvl[i] = vol[i][j];
}
if((maxLvl[i] - minLvl[i]) < ROWS) maxLvl[i] = minLvl[i] + ROWS;
minLvlAvg[i] = (minLvlAvg[i] * 63 + minLvl[i]) >> 6; // Dampen min/max levels
maxLvlAvg[i] = (maxLvlAvg[i] * 63 + maxLvl[i]) >> 6; // (fake rolling average)
for(uint8_t y = 0; y < ROWS ; y++){
if( y < height[i] ){
//matrix.drawPixel(i,y,matrix.Color(200, 0, 255));
matrix.drawPixel(i,y,Wheel(map(i,0,32,210,100)));
}
}
}
if(++volCount >= SAMPLES) volCount = 0; // Advance/rollover sample counter
matrix.show();
}