Seeed Grove - Page 6

7/23/22, 9:41 PM
Grove - Chainable RGB LED - Seeed Wiki
https://wiki.seeedstudio.com/Grove-Chainable_RGB_LED/
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21
22 return sum>>5;
23 }
24
25 float getTemp() // get temperature
26 {
27 float temperature = 0.0;
28 float resistance = 0.0;
29 int B = 3975; //B value of the thermistor
30
31 int a = getAnalog();
32
33 resistance = (float)(1023-a)*10000/a; //get the r
34 temperature = 1/(log(resistance/10000)/B+1/298.15
35 return temperature;
36 }
37
38 void ledLight(int dta) // light led
39 {
40
41 dta = dta/4; // 0 - 255
42
43 int colorR = dta;
44 int colorG = 255-dta;
45 int colorB = 0;
46
47 leds.setColorRGB(0, colorR, colorG, colorB);
48 }
49
50 void setup()
51 {
52 Serial.begin(38400);
53 cout << "hello world !" << endl;
54 }
55
56 void loop()
57 {
58 float temp = getTemp();
59 int nTemp = temp*100;
60
61 nTemp = nTemp > TEMPUP*100 ? TEMPUP*100 : (nTemp