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device.ino
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#include <Adafruit_NeoPixel.h>
int pinLED = 6;
Adafruit_NeoPixel strip = Adafruit_NeoPixel(12, pinLED, NEO_GRB + NEO_KHZ800);
#include <SimpleDHT.h>
int pinDHT11 = 4;
SimpleDHT11 dht11;
int pinPIR = 2;
String receivedData;
char serialEndByte = '\n';
int colorMode = 0;
bool dhtMode = false;
bool secureMode = false;
void colorWipe(uint32_t c, uint8_t wait) {
for(uint16_t i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, c);
strip.show();
delay(wait);
}
}
void getCurrentPIR(){
int val = digitalRead(pinPIR);
if(val == 1){
Serial.print("{\"detection\":\"");
Serial.print((int)val);
Serial.println("\"}");
}
delay(1000);
}
void getCurrentDHT(){
byte temperature = 0;
byte humidity = 0;
if (dht11.read(pinDHT11, &temperature, &humidity, NULL)) {
Serial.println("Read DHT11 failed.");
return;
}
Serial.print("{\"temper\":\"");
Serial.print((int)temperature);
Serial.print("\",\"humid\":\"");
Serial.print((int)humidity);
Serial.println("\"}");
delay(1000);
}
void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
Serial.println("Hello IoT Testbed");
pinMode(pinPIR,INPUT);
strip.begin();
strip.show(); // Initialize all pixels to 'off'
}
void loop() {
// put your main code here, to run repeatedly:
if( Serial.available() > 0 ) {
char character = Serial.read();
if (character == serialEndByte) {
Serial.print("Received: ");
Serial.println(receivedData);
receivedData.trim();
int colonPosition = receivedData.indexOf(':');
String key = receivedData.substring(0,colonPosition);
int value = receivedData.substring(colonPosition+1).toInt();
if( key.equals("led") ) {
if( value == 0) {
colorWipe(strip.Color(0, 0, 0), 50); // Off
Serial.print("{\"led\":\"");
Serial.print((int)0);
Serial.println("\"}");
}
else if(value == 1) {
colorWipe(strip.Color(64, 64, 64), 50); // WHITE
Serial.print("{\"led\":\"");
Serial.print((int)1);
Serial.println("\"}");
}
else if(value == 2) {
colorWipe(strip.Color(0, 0, 128), 50); // BLUE
Serial.print("{\"led\":\"");
Serial.print((int)2);
Serial.println("\"}");
}
else if(value == 3) {
colorWipe(strip.Color(0, 128, 0), 50); // GREEN
Serial.print("{\"led\":\"");
Serial.print((int)3);
Serial.println("\"}");
}
else if(value == 4) {
colorWipe(strip.Color(128, 0, 0), 50); // RED
Serial.print("{\"led\":\"");
Serial.print((int)4);
Serial.println("\"}");
}
else{
Serial.print("{\"error\":\"unknow led value\"}");
}
}
else if( key.equals("dht") ) {
if( value == 1 ) {
dhtMode = true;
Serial.print("{\"dht\":\"");
Serial.print(1);
Serial.println("\"}");
}
else if( value == 0 ) {
dhtMode = false;
Serial.print("{\"dht\":\"");
Serial.print(0);
Serial.println("\"}");
}
else{
Serial.print("{\"error\":\"unknown dhtmode Value\"}");
}
}
else if( key.equals("secure") ){
if( value == 1 ) {
secureMode = true;
Serial.print("{\"secure\":\"");
Serial.print(1);
Serial.println("\"}");
}
else if( value == 0 ) {
secureMode=false;
Serial.print("{\"secure\":\"");
Serial.print(0);
Serial.println("\"}");
}
else{
Serial.print("{\"error\":\"unknow secure value\"}");
}
}
else{
Serial.print("{\"error\":\"unknow cmd\"}");
}
receivedData = "";
} else {
receivedData.concat(character); // Add the received character to the receive buffer
}
}
if(secureMode){
getCurrentPIR();
}
if(dhtMode){
getCurrentDHT();
}
}