Diff: main.cpp

Revision:

0:8c9202ca7351

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Feb 11 22:29:34 2014 +0000
@@ -0,0 +1,192 @@
+/*
+ * Allen Wild
+ * Joseph Guinta
+ *
+ * ECE 4180 Lab 2
+ */
+ 
+#include "mbed.h"
+#include "rtos.h"
+#include "HMC6352.h"
+#include "EthernetInterface.h"
+#include "uLCD_4DGL.h"
+#include "SDFileSystem.h"
+#include "Speaker.h"
+#include "wave_player.h"
+#include "Servo.h"
+
+#define ANALOG_OUT_PIN p18
+#define ANALOG_IN p19
+#define SOUND_WAVFILE        "/sd/wavfiles/coolsound.wav"
+#define PWM_PIN p0
+
+void part1Function(void);
+void part2Function(void);
+void part4Function(void);
+void part5Function(void);
+void part6Function(void);
+void part7Function(void);
+void part8Function(void);
+
+//Part 1 - Analog
+float Analog_out_data[40];
+AnalogOut a_out_signal(ANALOG_OUT_PIN);
+AnalogIn a_in(ANALOG_IN);
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+DigitalOut led3(LED3);
+DigitalOut led4(LED4);
+
+//Part 2 and 3 - I2C and Serial
+HMC6352 compass(p9, p10);
+Serial pc(USBTX, USBRX);
+
+
+//Part 4 - Ethernet
+EthernetInterface eth;
+
+
+//Part 5 - servo position control
+PwmOut servo(p21);
+
+//Part 6 - Color LCD
+uLCD_4DGL uLCD(p28, p27, p29); 
+
+// Part 7  - SD
+SDFileSystem sd(p5, p6, p7, p8, "sd"); 
+//Part 8 - Speaker
+AnalogOut DACout(p18);
+wave_player waver(&DACout);
+int main() {
+   part1Function(); //Analog
+   part2Function();
+   part4Function(); //Ethernet
+   part5Function(); //servo
+   part6Function(); //Color LCD
+   part7Function(); //SD
+   part8Function(); //Sound
+}
+
+
+    
+void part1Function(void) {
+     int i = 0;
+    //precompute sine wave values
+    for( i=0; i<40; i++) {
+        Analog_out_data[i]=((1.0 + sin((float(i)/40.0*6.28318530717959)))/2.0);   // scale the sine wave from 0.0 to 1.0     
+    } 
+    
+    
+    //part 1 while loop - consider making each part a separate function (easy to call and comment out)
+    while (true) {
+        
+        //is this what he means by 2 complete cycles for each iteration of the loop??
+        for (i = 0; i < 40; i++) { //cycle 1
+            a_out_signal = Analog_out_data[i];
+            wait(.1);
+        }   
+         for (i = 0; i < 40; i++) { //cycle 2
+            a_out_signal = Analog_out_data[i];
+            wait(.1);
+        }  
+        
+        //As the voltage passes a threshold, turn on another LED
+        led1 = (a_in > 0.2) ? 1 : 0;
+        led2 = (a_in > 0.4) ? 1 : 0;
+        led3 = (a_in > 0.6) ? 1 : 0;
+        led4 = (a_in > 0.8) ? 1 : 0;
+        
+        wait(0.3);
+     }   
+        
+}//end of part1
+    
+void part2Function(void) {
+    compass.setOpMode(2, 1, 20); //continuous mode, set/reset, 20Hz
+   
+    while (1) {
+ 
+        wait(0.1);
+ 
+        pc.printf("Compass reading: %f\n", compass.sample() / 10.0); //Compass.sample() returns value from 0 -3599.xxx or something like that, so divide by 10 to get 0-360 degrees
+ 
+    }  
+} //end part 2
+
+
+void part4Function(void) { //Code taken from http://mbed.org/handbook/Ethernet-Interface
+    eth.init(); //Use DHCP
+    eth.connect();
+    pc.printf("IP Address is %s\n", eth.getIPAddress());
+    
+    TCPSocketConnection sock;
+    sock.connect("mbed.org", 80);
+    
+    char http_cmd[] = "GET /media/uploads/mbed_official/hello.txt HTTP/1.0\n\n";
+    sock.send_all(http_cmd, sizeof(http_cmd)-1);
+    
+    char buffer[300];
+    int ret;
+    while (true) {
+        ret = sock.receive(buffer, sizeof(buffer)-1);
+        if (ret <= 0)
+            break;
+        buffer[ret] = '\0';
+        pc.printf("Received %d chars from server:\n%s\n", ret, buffer);
+    }
+      
+    sock.close();
+    
+    eth.disconnect();
+    while(1) {}
+} //end part 4
+
+void part5Function(void) {
+    servo.period_ms(20);        //20ms period
+    while (1) {
+        for(float offset=0.0; offset<0.001; offset+=0.0001) {
+            servo.pulsewidth_ms(1 + offset); // servo position determined by a pulsewidth between 1-2ms
+            wait(0.2);
+        }
+    }
+    
+} //end part 5
+
+void part6Function(void) {
+    uLCD.printf("\nHello World!\n");
+} //end part 6
+
+void part7Function(void) { 
+
+
+    mkdir("/sd/mydir", 0777);
+    
+    FILE *fp = fopen("/sd/mydir/hellosd.txt", "w");
+    if(fp == NULL) {
+        error("Could not open file for write\n");
+    }
+    fprintf(fp, "Hello SD file world");
+    fclose(fp); 
+    
+    fp = fopen("/sd/mydir/hellosd.txt", "r"); //open file, read string and write to pc through usb virtual com port
+    if(fp == NULL) {
+        error("Could not open file for read\n");
+    }
+     char mystring [100]; //allocate space for string
+    if ( fgets (mystring , 100 , fp) != NULL )  //read in line
+         pc.printf("%s\n",mystring); //can i do this? i haven't done c in so long
+    fclose(fp);
+} //end part 7
+
+void part8Function(void) {
+    
+     //open wav file
+    FILE *wave_file;
+    wave_file = fopen(SOUND_WAVFILE, "r");
+    
+    //play wav file
+    waver.play(wave_file);
+    
+    //close wav file
+   fclose(wave_file);
+}//end part 8
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