Diff: main_programs/main.cpp

Revision:

0:960b355eaa84

Child:

2:a079de4fd5b9

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main_programs/main.cpp	Fri Aug 20 11:18:40 2010 +0000
@@ -0,0 +1,150 @@
+#include "mbed.h"
+#include "TextLCD.h"
+#include "Counter.h"
+#include "LIS302.h"
+#include "Servo.h"
+#include "MSCFileSystem.h"
+
+Servo myservo(p21);
+LIS302 acc (p5,p6,p7,p8);
+DigitalIn on(p20);
+DigitalOut LIS302(LIS302);
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+DigitalOut led3(LED3);
+DigitalOut led4(LED4);
+#define TICK_PERIOD 0.5
+MSCFileSystem fs("fs");
+Counter counter(p18);
+
+
+Ticker tick;
+
+Timer timer;
+volatile int tick_active = 0;
+
+void dotick (void) {
+    tick_active = 1;
+
+}
+float samples [2] = {0};
+int index2 = 0;
+int start = 1;
+
+char FileName[20]; // this is where we store the file name
+
+int rpm_counter=0;
+int main() {
+
+    float samples [1] = {0};
+    int index = 0;
+    int flipped_right = 1;
+    int flipped_left = 1;
+
+    TextLCD lcd(p24, p25, p26, p27, p28, p29, p30);
+    // read the current time, and con convert it to a DD/MM/YYYY HH:MM:SS structure
+    time_t seconds = time(NULL);
+    struct tm *t = localtime(&seconds);
+
+    // use the time to make a new file name
+    // file name is /fs/ddmmHHMM.csv
+    // Note we have to add one to the month as it is represented as 0-11 rather than 1-12 :-(
+    sprintf(FileName,"/fs/%02d%02d%02d%02d.csv",t->tm_mday,1+(t->tm_mon),t->tm_hour,t->tm_min);
+    FILE *fp = fopen(FileName,"w");
+
+
+
+    fprintf(fp, "RPM,X,Y,Z\n");//this part prints the columns headers
+
+    fclose(fp);
+
+    tick.attach(dotick,0.5);
+
+    while (1) {
+        while (tick_active == 0) {}
+        rpm_counter = counter.read();
+        counter.reset();
+
+        tick_active = 0;
+        samples[index2] = 120*rpm_counter;
+        index2++;
+        if (index2 >= 2) {
+            index2 = 0;
+        }
+        int i;
+        start = 1;
+        for (i=0; i<2; i++) {
+            if (samples[i] <60) {
+                start = 0;
+            }
+        }
+        if (on) {
+            led2 = 1;
+        }
+        if (!on) {
+            led2 = 0;
+        }
+        if (start) {
+            led3 = 1;
+        }
+        if (!start) {
+            led3 = 0;   // the leds are only to check the program is doing what i want it to!
+        }
+
+        if (start&&on)
+            FILE *fp = fopen(FileName,"a");
+        timer.start ();
+        while (start&&on) {       //if the light gate reads over 60RPM and the swich is on then it will enter this loop
+
+            while (tick_active == 0) {}
+
+            rpm_counter = counter.read();
+            counter.reset();
+
+
+            fprintf(fp,"%d,%.2f,%.2f,%.2f\n",60*rpm_counter,acc.x(),acc.y(),acc.z());  //the data colected is saved in the file that was opend
+            led1 = !led1;
+            tick_active = 0;
+
+
+            samples[index] = acc.y();
+            index++;
+            if (index >= 1) {
+                index = 0;
+            }
+            int i;
+
+            flipped_right = 1;
+            flipped_left =1;
+
+            for (i=0; i<1; i++) {
+                if (samples[i] >= -0.8) {
+                    flipped_left = 0;
+                }
+
+                if (samples[i] <= 0.8) {
+                    flipped_right = 0;         //the bit abouve is an array that is looking to see if the accelerometer is reading between 0.8 and -0.8
+
+
+
+
+                }
+
+                if (flipped_left||flipped_right||!on) {
+                    // if the accelerometer is not reading between 0.8 and -0.8 on the y.acc or the swich is off the following will happen
+
+
+                    myservo = 1; // 1. the servo will turn to turn off the engine
+
+                    timer.stop();  // 2. the timer will stop
+
+                    fprintf(fp,"this run lasted %f seconds \n", timer.read()); // 3. the timer time will be printed to the file
+                    fprintf(fp,"off,off,off,off");
+                    fclose(fp); // and last the file will be closed
+                    led1 = 0;
+                    led4 = 1;
+                }
+            }
+        }
+    }
+}