main.cpp

00001 #include "mbed.h"
00002 #include "DHT/DHT.h"
00003 #include <string>
00004 
00005 using namespace std;
00006 
00007 DHT sensor(A2,DHT22); 
00008 Serial pc(SERIAL_TX,SERIAL_RX);
00009 Serial xbee(A0,A1);
00010 
00011 void getTemperatueHumidity(){
00012     int err;
00013     pc.printf("\r\nStarting to gather temperature and humidity......\n");
00014     pc.printf("\r\n******************\r\n");
00015     wait(1); // wait 1 second for device stable status
00016     while (1) {
00017  
00018         err = sensor.readData();
00019         if (err == 0) {
00020             pc.printf("Temperature is %4.2f C \r\n",sensor.ReadTemperature(CELCIUS));
00021             pc.printf("Temperature is %4.2f F \r\n",sensor.ReadTemperature(FARENHEIT));
00022             pc.printf("Temperature is %4.2f K \r\n",sensor.ReadTemperature(KELVIN));
00023             pc.printf("Humidity is %4.2f \r\n",sensor.ReadHumidity());
00024      
00025             xbee.printf("Temperature is %4.2f C \r\n",sensor.ReadTemperature(CELCIUS));
00026             xbee.printf("Temperature is %4.2f F \r\n",sensor.ReadTemperature(FARENHEIT));
00027             xbee.printf("Temperature is %4.2f K \r\n",sensor.ReadTemperature(KELVIN));
00028             xbee.printf("Humidity is %4.2f \r\n",sensor.ReadHumidity());
00029      
00030             return;
00031         } else {
00032             pc.printf("\r\nErr %i \n",err);
00033             xbee.printf("\r\nErr %i \n",err);
00034         }
00035         wait(5);
00036     }
00037 }
00038 
00039 void printInit(){
00040      xbee.printf("Awaiting User Command....\n");
00041 }
00042 
00043 int main() {
00044    
00045     char a;
00046     printInit();
00047     while(1){
00048         a = xbee.getc();        
00049         if(a == 'T'){
00050             getTemperatueHumidity();
00051             a = NULL; 
00052             printInit();     
00053         }
00054         
00055         if( a == 'G'){
00056             //GPS function
00057             a = NULL;
00058             printInit();    
00059         }      
00060     }
00061 }
00062