iotsaRGBWSensor/iotsaRGBWSensorMod.cpp at master · cwi-dis/iotsaRGBWSensor · GitHub

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
#include "iotsa.h"
#include "iotsaRGBWSensorMod.h"
#include "iotsaConfigFile.h"
#include "Wire.h"
#include "veml6040.h"

VEML6040 sensor;

// VEML6040 I2C pins. App-only, single consumer -- no need for build_opt.h /
// build_flags; override at build time if a board wires it differently.
#ifndef IOTSA_VEML_SDA
#define IOTSA_VEML_SDA 19
#endif
#ifndef IOTSA_VEML_SCL
#define IOTSA_VEML_SCL 23
#endif

void IotsaRGBWSensorMod::configLoad() {
  IotsaConfigFileLoad cf("/config/rgbwsensor.cfg");
  cf.get("integrationInterval", integrationInterval, 320);
  _setInterval();
}

void IotsaRGBWSensorMod::configSave() {
  IotsaConfigFileSave cf("/config/rgbwsensor.cfg");
  cf.put("integrationInterval", integrationInterval);
  _setInterval();
}

void
IotsaRGBWSensorMod::webHandler() {
  iotsaController.extendCurrentMode();
  bool anyChanged = false;
  if( api.webService->server->hasArg("integrationInterval")) {
    if (needsAuthentication()) return;
    String sInterval = api.webService->server->arg("integrationInterval");
    integrationInterval = sInterval.toInt();
    anyChanged = true;
  }
  if (anyChanged) configSave();
  String message = "<html><head><title>RGBW sensor module</title></head><body><h1>RGBW sensor module</h1>";
  _measure();
  if (error) {
    message += "<p><em>Error: VEML6040 sensor not detected</em></p>";
  }
  message += "<h2>Sensor Configuration</h2>";
  message += "<form method='get'>Integration interval (ms): <input name='integrationInterval' value='";
  message += String(integrationInterval);
  message += "'><input type='submit' value='Configure'></form>";
  message += "<h2>Sensor Reading</h2>";
  message += "<form method='get'><input type='submit' value='Refresh'></form>";

  if (r > 0.99 || g > 0.99 || b > 0.99) {
    message += "<p><em>Note:</em> Color channel over-exposed, decrease interval for better color results.</p>";
  } else
  if (r < 0.33 && g < 0.33 && b < 0.33) {
    message += "<p><em>Note:</em> Increasing interval may give better color results.</p>";
  } else
  if (w > 0.99) {
    message += "<p><em>Note:</em> W channel over-exposed. May mean lots of IR light.</p>";
  }

  message += "<p>RGBW counts: R=" + String(raw_r) + ", G=" + String(raw_g) + ", B=" + String(raw_b) + ", W=" + String(raw_w) + "<br>";
  message += "RGB intensities: R=" + String(r) + ", G=" + String(g) + ", B=" + String(b) + "<br>";
  uint32_t hexColor = ((int)(r*255) << 16) | ((int)(g*255) << 8) | ((int)(b*255));

  message += "Color 0x" + String(hexColor, 16)+ ": <svg width='40' height='40'><rect width='40' height='40' style='fill:#" + String(hexColor, HEX) + ";stroke-width:2;stroke:rgb(0,0,0)' /></svg>";
  float maxRGB = max(r, max(g, b));
  if (maxRGB == 0) maxRGB = 1;
  hexColor = ((int)(r/maxRGB*255) << 16) | ((int)(g/maxRGB*255) << 8) | ((int)(b/maxRGB*255));
  message += "Hue 0x" + String(hexColor, 16) + ": <svg width='40' height='40'><rect width='40' height='40' style='fill:#" + String(hexColor, HEX) + ";stroke-width:2;stroke:rgb(0,0,0)' /></svg><br>";

  message += "White intensity: W=" + String(w) + "<br>";
  message += "Color temperature: CCT=" + String(cct) + "<br>";
  message += "Ambient light level: " + String(lux) + "lux<br>";
  message += "(Integration interval: "+ String(integrationInterval) + "ms)";
  api.webService->server->send(200, "text/html", message);
}

String IotsaRGBWSensorMod::info() {
  iotsaController.extendCurrentMode();
  String message = "<p>Built with RGBW sensor module. See <a href=\"/rgbw\">/rgbw</a>, or <a href=\"/api/rgbw\">/api/rgbw</a> for REST API.</p>";
  return message;
}

void IotsaRGBWSensorMod::setup() {
  Wire.begin(IOTSA_VEML_SDA, IOTSA_VEML_SCL);
  if(sensor.begin()) {
    configLoad();
    error = false;
    IFDEBUG IotsaSerial.println("VEML6040 sensor attached");
  } else {
    error = true;
    IFDEBUG IotsaSerial.println("VEML6040 sensor not found");
  }
}

void IotsaRGBWSensorMod::_setInterval() {
  uint8_t conf;
  if (integrationInterval <= 40) {
    integrationInterval = 40;
    conf = VEML6040_IT_40MS + VEML6040_AF_AUTO + VEML6040_SD_ENABLE;
  } else
  if (integrationInterval <= 80) {
    integrationInterval = 80;
    conf = VEML6040_IT_80MS + VEML6040_AF_AUTO + VEML6040_SD_ENABLE;
  } else
  if (integrationInterval <= 160) {
    integrationInterval = 160;
    conf = VEML6040_IT_160MS + VEML6040_AF_AUTO + VEML6040_SD_ENABLE;
  } else
  if (integrationInterval <= 320) {
    integrationInterval = 320;
    conf = VEML6040_IT_320MS + VEML6040_AF_AUTO + VEML6040_SD_ENABLE;
  } else
  if (integrationInterval <= 640) {
    integrationInterval = 640;
    conf = VEML6040_IT_640MS + VEML6040_AF_AUTO + VEML6040_SD_ENABLE;
  } else {
    integrationInterval = 1280;
    conf = VEML6040_IT_1280MS + VEML6040_AF_AUTO + VEML6040_SD_ENABLE;
  }
  sensor.setConfiguration(conf);
  nextReadingAvailable = millis() + oldIntegrationInterval + integrationInterval + 1;
  oldIntegrationInterval = integrationInterval;
}

bool IotsaRGBWSensorMod::getHandler(const char *path, JsonObject& reply) {
  iotsaController.extendCurrentMode();
  _measure();
  if (error) {
    reply["error"] = "no sensor";
    return true;
  }
  reply["raw_r"] = raw_r;
  reply["raw_g"] = raw_g;
  reply["raw_b"] = raw_b;
  reply["raw_w"] = raw_w;
  reply["r"] = r;
  reply["g"] = g;
  reply["b"] = b;
  reply["w"] = w;
  reply["cct"] = cct;
  reply["lux"] = lux;
  reply["integrationInterval"] = integrationInterval;
  return true;
}

bool IotsaRGBWSensorMod::putHandler(const char *path, const JsonVariant& request, JsonObject& reply) {
  iotsaController.extendCurrentMode();
  bool anyChanged = false;
  JsonObject reqObj = request.as<JsonObject>();
  if (getFromRequest<int>(reqObj, "integrationInterval", integrationInterval)) {
    anyChanged = true;
  }
  if (anyChanged) configSave();
  return anyChanged;
}

void IotsaRGBWSensorMod::lateSetup() {
  name = "rgbw";
  api.setup("rgbw", true, true);
}

void IotsaRGBWSensorMod::_measure() {
  if (error) return;
  uint32_t now = millis();
  if (now < nextReadingAvailable) delay(nextReadingAvailable-now);
  raw_r = sensor.getRed();
  raw_g = sensor.getGreen();
  raw_b = sensor.getBlue();
  raw_w = sensor.getWhite();
  r = (float)raw_r/raw_w;
  g = (float)raw_g/raw_w;
  b = (float)raw_b/raw_w;
  w = (float)raw_w/65536.0;
  cct = (float)sensor.getCCT();
  lux = sensor.getAmbientLight();
  nextReadingAvailable = millis() + integrationInterval;
  IFDEBUG IotsaSerial.printf("raw_r=%d raw_g=%d raw_b=%d raw_w=%d r=%f g=%f b=%f w=%f cct=%f lux=%f\n", raw_r, raw_g, raw_b, raw_w, r, g, b, w, cct, lux);
}

void IotsaRGBWSensorMod::loop() {
}