main.cpp

00001 #include "mbed.h"
00002 #include "rtos.h"
00003 #include "hts221.h"
00004 #include "LPS25H.h"
00005 Serial pc(USBTX, USBRX);
00006 
00007 
00008 #define N 10
00009 DigitalOut myled(D7);
00010 Ticker t;
00011 I2C i2c2(I2C_SDA, I2C_SCL);
00012 
00013 float tempCelsius = 25.50;
00014 float humi = 55;
00015 int humiMax = 100; 
00016 char cmd=0;
00017 float tempArray[N];
00018 float humArray[N];
00019 float pressArray[N];
00020 uint32_t seconds = 0, minutes=0, hours=0; 
00021 static float nextTEMPsample, nextHUMsample, nextPRESSsample;
00022 
00023 static int indexOfOldest = (N-1);
00024 
00025 LPS25H barometer(i2c2, LPS25H_V_CHIP_ADDR);
00026 HTS221 humidity(I2C_SDA, I2C_SCL);
00027 
00028 
00029 void adcISR();
00030 
00031 
00032 
00033 typedef struct {
00034       
00035       float tempVal ;
00036       float humVal;
00037       float pressVal;
00038     }message_t;
00039     
00040 Mail<message_t, 10> mail_box;
00041 
00042 void adcISR()
00043 {
00044        message_t *message = mail_box.alloc();
00045        message->tempVal = tempCelsius;
00046        message->humVal = humi;
00047        message->pressVal = barometer.pressure();
00048        myled=1;
00049        mail_box.put(message);
00050        //Thread::wait(1000);
00051        
00052 }
00053 void thread1 (void const* arg)
00054 {
00055          
00056          pc.baud(115200);
00057          pc.printf("Temperature,Humidity,Pressure\n\n");
00058    while(1) 
00059    {  
00060         
00061          osEvent evt = mail_box.get();
00062         if (evt.status == osEventMail) 
00063         { 
00064             for (unsigned int n=(N-1); n>0; n--) 
00065            { 
00066              tempArray[n]= tempArray[n-1];
00067              humArray[n]= humArray[n-1];
00068              pressArray[n]= pressArray[n-1];
00069            }
00070              message_t *message = (message_t*)evt.value.p;
00071              tempArray[0]= message->tempVal;
00072              humArray[0] = message->humVal;
00073              pressArray[0]= message->pressVal;
00074              for (unsigned int n=0; n<N; n++)
00075               {
00076                  pc.printf("the element of %d is %4.2f\n\r ",n,tempArray[n]);
00077                  wait(1.0);
00078               }
00079             
00080             // pc.printf("%4.2f,%3.1f,%6.1f\n\r", tempArray[N/2], humArray[N/2], pressArray[N/2]);
00081              
00082              mail_box.free(message); 
00083        }
00084     }    
00085 }
00086  char answer;
00087 int main(void)
00088   { 
00089   
00090     puts("Loading... \n\n");
00091     Thread thread(thread1);
00092     t.attach(&adcISR,15);
00093     
00094     while(1) 
00095     {
00096        
00097       
00098            
00099        humidity.init();
00100        humidity.calib();
00101        humidity.ReadTempHumi(&tempCelsius, &humi);
00102        barometer.get();
00103        barometer.pressure();
00104        barometer.temperature();
00105        sleep();
00106        Thread::wait(200); // 200 ms NB 'Thread::wait(int d);' !!! d is in milliseconds! 
00107        myled = 0; // LED is OFF
00108        Thread::wait(100); // 100 ms
00109         
00110        
00111       
00112      
00113     }
00114       
00115   }
00116   
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