Diff: main.cpp

Revision:

5:d432702334a9

Parent:

3:a7f02754bc99

--- a/main.cpp	Tue Nov 07 13:24:50 2017 +0000
+++ b/main.cpp	Fri Nov 17 03:21:26 2017 +0000
@@ -7,6 +7,7 @@
 #include "MMA8452Q.h"           //acceleromater library
 #include "uLCD_4DGL.h"          //LCD library
 #include "bouncing_ball.h"      //new ball phyics library
+#include "SDFileSystem.h"
 
 #define UPDATE_TIME_S 0.02
 #define START_X_1 10
@@ -18,8 +19,46 @@
 
 #define DEBUG_MODE 0
 
-//Function prototype for color selection function:
+// Variables for SD file system code
+FILE *file;
+float voltage_in;
+float degrees_c;
+int n = 0;
+int c;
+
+// Define Tickers/timers
+Ticker flipper1; 
+Ticker flipper2;
+Timer timestamp;
+Timer debounce;                 // debounce timer for Record external interrupt
+Timer debounce2;                // debounce timer for LCDshow ecternal interrupt
+
+//internal leds
+DigitalOut myled2(LED2);
+DigitalOut myled4(LED4);
+
+//Function prototype for color selection and Ticker updates
 int get_LCD_color(int color_integer);
+void LCD_update(void);          // LCD screen update function prototype
+void BALL_update(void);         // Ball update function prototype
+void recording(void);           // Recording function prototype
+void display(void);             // Display LCD screen function Prototype
+void flip2() {                  // flip 2 function
+ myled2 = !myled2;
+}
+
+// Temperature Analog input (pin 15)
+AnalogIn ain(p15);
+
+// External Interrupt inputs
+InterruptIn record(p18);
+InterruptIn LCDshow(p17);
+
+// SD card (SPI pins)
+SDFileSystem sd(p5, p6, p7, p8, "sd");
+
+//Define Serial Terminal
+Serial pc(USBTX, USBRX);
 
 // Graphic LCD - TX, RX, and RES pins
 uLCD_4DGL uLCD(p9,p10,p11);     //initialize a driver object for an LCD connected on pins 9-11
@@ -32,11 +71,16 @@
 
 int main()
 {
+    // led for ball update
+    myled2 = 0;
+    myled4 = 0;
+    flipper2.attach(&flip2, .02);
+    
     // Initialize uLCD
     uLCD.baudrate(115200);
     uLCD.background_color(BLACK);
-    uLCD.cls();
-
+    uLCD.cls();  
+    
     // Initialize accelerometer
     accel.init();
 
@@ -47,11 +91,30 @@
     //Set ball radius and color:
     ball1.set_param(RADIUS_1,0); //color is unimportant
     ball2.set_param(RADIUS_2,1); //just making sure the colors are different
-
+    
+    // Start Timers and Tickers
+        debounce.start();
+        debounce2.start();
+    
+    flipper2.attach(&BALL_update, 0.02); // update ball position @ 50hz
+    flipper1.attach(&LCD_update, 0.0909); // update LCD screen @ 11hz
+    
+    //hardwareinterrupt
+    record.rise(&recording);
+    LCDshow.rise(&display);
+            
     /* Make the balls "fall" in direction of accelerometer by forcing the ball objects
      to update themselves at regular intervals, and te drawing the locations reported
      by the ball objects on the LCD screen: */
     while (1) {  //execute 'forever'
+    }
+    }
+        // Functions:
+        void display()
+}
+        void LCD_update()  {   // LCD screen update function
+    
+    
         // Draw circles in the x and y positions stored by the ball objects:
         uLCD.filled_circle(ball1.posx, ball1.posy, ball1.radius, get_LCD_color(ball1.color));
         uLCD.filled_circle(ball2.posx, ball2.posy, ball2.radius, get_LCD_color(ball2.color));
@@ -63,25 +126,73 @@
         uLCD.filled_circle(ball1.posx, ball1.posy, ball1.radius, BLACK);
         uLCD.filled_circle(ball2.posx, ball2.posy, ball2.radius, BLACK);
 
+    }
+        void BALL_update()      // BALL position update function
+    {
+
         // Force the objects 'ball1' and 'ball2' to update their stored positions
         // and velocities:
         ball1.update(UPDATE_TIME_S,accel);
         ball2.update(UPDATE_TIME_S,accel);
 
-        if (DEBUG_MODE) {
-            //If compiled with DEBUG_MODE flag raised, print values to screen.
-            uLCD.locate(0,4);
-            uLCD.printf("X: %d.1\nY: %.1d",ball1.posx,ball1.posy);
+        myled2=!myled2;
+        
+        // Potential way of counting updates
+                n = n + 1;   
+                
+        void recording() { 
+        
+    if (debounce.read_ms()>200)    // only allow function if debounce timer   
+        // Resets and starts time stamp timer
+            timestamp.reset();
+            timestamp.start();
+        // Turn onboard LED on
+            myled4 = 1;
+            
+    // Open file for writing
+    file = fopen("/sd/temp_data.txt", "w");
+    if ( file == NULL ) {
+        error("ERROR: Could not open file for writing!\n\r");
+        return -1;
+    }
 
-            uLCD.locate(0,6);
-            uLCD.printf("VX: %f.1\nVY: %.1f",ball1.speedx,ball1.speedy);
+    // Tell the user we need to wait while we collect some data
+    pc.printf("\nCollecting data (Do not remove SD Card!) ...\n\r");        
+               
+         // Collect temperatures with timestamps every second
+    for(i = 0; i < 10; i++) {
+        voltage_in = ain * 3.3;
+        degrees_c = (voltage_in - 0.5) * 100.0;
+        fprintf(file, "%2.2fs: %3.1f deg C\n\r", timer.read(), degrees_c);
+        wait(1);
+    }
 
-            uLCD.locate(0,10);
-            uLCD.printf("AX: %f.1\nAY: %.1f\nAZ: %0.1f",accel.readX(),accel.readY(),accel.readZ());
-        }
+    // Close file and re-open it for reading
+    fclose(file);
+    file = fopen("/sd/temp_data.txt", "r");
+    if ( file == NULL ) {
+        error("ERROR: Could not open file for reading!\n\r");
+        return -1;
     }
+
+    // Print results to console
+    pc.printf("Temperature data:\n\r");
+    while(1) {
+       c = fgetc(file);
+       if ( c == EOF ) {
+           break;
+       }
+       pc.putc(c);
+    }
+
+    // Close the file and finish
+    fclose(file);
+    pc.printf("Done! Safe to remove SD card\n\r");
+
+    return 0;
 }
 
+
 //Interpret LCD colors.
 int get_LCD_color(int color_integer)
 {