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7/23/22, 9:41 PM Grove - Chainable RGB LED - Seeed Wiki
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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