main.cpp

00001 #include "mbed.h"
00002 #include "HEPTA_EPS.h"
00003 #include "HEPTA_CDH.h"
00004 #include "HEPTA_SENSOR.h"
00005 #include "HEPTA_COM.h"
00006 #include "LPS.h" //library for pressure sensor
00007 
00008 HEPTA_CDH cdh(PB_5, PB_4, PB_3, PA_8, "sd");
00009 HEPTA_EPS eps(PA_0,PA_4);
00010 HEPTA_SENSOR sensor(PA_7,PB_7,PB_6,0xD0);
00011 HEPTA_COM com(PA_9,PA_10,9600);
00012 DigitalOut condition(PB_1);
00013 DigitalOut analog_switch(PA_3);
00014 Serial sat(USBTX,USBRX, 9600);
00015 I2C i2c(PB_7, PB_6);     //i2c for pressure sensor
00016 LPS ps(i2c);
00017 DigitalOut sp1(PA_1);    //DigitalOut for buzzer
00018 Timer sattime;           
00019 Ticker hk;
00020 Ticker sound;
00021 int flag = 0;            //condition flag
00022 float batvol, temp;      //voltage, temperature 
00023 int rcmd=0,cmdflag=0;    //command variable
00024 int i, count;
00025 float pressure = 0.0, altitude = 0.0;
00026 float ax,ay,az,gx,gy,gz;
00027 int s = 0;
00028 
00029 #define mC 261.626
00030 #define mD 293.665
00031 #define mE 329.628
00032 #define mF 349.228
00033 #define mG 391.995
00034 #define mA 440.000
00035 #define mB 493.883
00036 float mm[]={mC*4,mD*4,mE*4,mF*4,mG*4,mA*4,mB*4,mC*8};   //timbre
00037 
00038 // 
00039 void tick(void)
00040 {
00041     sp1.write(s);
00042     s=!s;
00043 }
00044 
00045 // downlink HK dsta function
00046 void hk_sensing() {
00047     com.printf("HEPTASAT::Time = %.4f [s], batvol = %.4f [V], temp = %.4f [deg C], altitude = %.4f [m]\r\n",sattime.read(),batvol,temp,altitude);
00048     com.printf("        ::ax = %.4f, ay = %.4f, az = %.4f, gx = %.4f, gy = %.4f, gz = %.4f\r\n",ax,ay,az,gx,gy,gz);   
00049     
00050 }
00051 
00052 int main()
00053 {
00054     sat.printf("From Sat : Nominal Operation\r\n");
00055     com.printf("From Sat : Nominal Operation\r\n");
00056     sattime.start();         // start sat timer
00057     eps.turn_on_regulator(); //turn on 3.3V conveter  
00058     analog_switch = 1;       //turn on analog switch (transceiver mode)
00059     
00060     // check saving to SD card
00061     mkdir("/sd/mydir", 0777);
00062     FILE *fp = fopen("/sd/mydir/sdtest.csv", "w");
00063     if(fp == NULL) {
00064         error("Could not open file for write\r\n");
00065     }
00066     fclose(fp);
00067     
00068     // setting the pressure sensor 
00069         // initialize the pressure sensor 
00070     if (!ps.init()){
00071         printf("Failed to autodetect pressure sensor!\r\n");
00072         while (1);
00073     }
00074     ps.init();
00075     ps.enableDefault();
00076     
00077     while(1){
00078         com.initialize();        // communication system initialize
00079         FILE *fp = fopen("/sd/mydir/sdtest.csv", "a");
00080         hk.attach(&hk_sensing, 1.0); // Start the Ticker
00081         for(count=0; count<10; count++){
00082             condition = !condition;                 // LED blinking
00083             eps.vol(&batvol);                       // Get battery voltage
00084             sensor.temp_sense(&temp);               // Get temperature
00085             sensor.sen_acc(&ax,&ay,&az);            // Get acceleration
00086             sensor.sen_gyro(&gx,&gy,&gz);           // Get gyro
00087             pressure = ps.readPressureMillibars();  // Get pressure
00088             altitude = ps.pressureToAltitudeMeters(pressure);   // Get altitude
00089             // add HK data to file
00090             fprintf(fp,"%f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f\r\n",sattime.read(),batvol,temp,pressure,altitude,ax,ay,az,gx,gy,gz);
00091             wait_ms(100);
00092         }
00093         fclose(fp);     // save the file
00094         if(sattime > 300){
00095             //sound on
00096             for(i=0;i < sizeof(mm)/sizeof(mm[0]);i++) {
00097                 sound.attach(&tick,1.0/mm[i]/2.0);  
00098                 wait(0.5f);
00099             }
00100             sound.detach();
00101         }
00102     }
00103 }