Diff: main.cpp

Revision:

0:812790893086

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Nov 23 20:18:59 2011 +0000
@@ -0,0 +1,177 @@
+#include "mbed.h"
+
+Serial pc(USBTX, USBRX); // tx, rx
+
+// Variables for Heartbeat and Status
+Ticker heartbeat;
+bool heartbeatflag=false;
+
+PwmOut K1(LED1);
+PwmOut K2(LED2);
+PwmOut K3(LED3);
+PwmOut K4(LED4);
+
+void show_menu() {
+    pc.printf("0: Exit\n\r");
+    pc.printf("1: Show Menu\n\r");    
+    pc.printf("2: Start KITT\n\r"); 
+    pc.printf("3: Stop KITT\n\r");     
+    pc.printf("\n\r");                
+}
+
+
+#define KITT_PERIOD 0.010 
+#define KITT_OFF    0.00
+#define KITT_20     (KITT_PERIOD / 15.0)
+#define KITT_50     (KITT_PERIOD /  5.0)
+#define KITT_MAX    (KITT_PERIOD)
+
+// Heartbeat monitor
+void pulse() {
+  static int kitt_state=0;
+  
+  if (!heartbeatflag) {
+    K1.pulsewidth(KITT_OFF); // K1 Off
+    K2.pulsewidth(KITT_OFF); // K2 Off
+    K3.pulsewidth(KITT_OFF); // K3 Off
+    K4.pulsewidth(KITT_OFF); // K4 Off         
+  }
+  else {             
+
+    switch (kitt_state) {
+      case 0: 
+               //  1000
+               K1.pulsewidth(KITT_MAX); // K1 On
+               K2.pulsewidth(KITT_20);  // K2 Decay
+               K3.pulsewidth(KITT_OFF); // K3 Off
+               K4.pulsewidth(KITT_OFF); // K4 Off         
+               
+               kitt_state++;
+               break;
+      case 1:
+               //  0100     
+               K1.pulsewidth(KITT_50);  // K1 Decay
+               K2.pulsewidth(KITT_MAX); // K2 On
+               K3.pulsewidth(KITT_OFF); // K3 Off
+               K4.pulsewidth(KITT_OFF); // K4 Off         
+                           
+               kitt_state++;
+               break;            
+      case 2:
+               //  0010         
+               K1.pulsewidth(KITT_20);  // K1 Decay
+               K2.pulsewidth(KITT_50);  // K2 Decay
+               K3.pulsewidth(KITT_MAX); // K3 On
+               K4.pulsewidth(KITT_OFF); // K4 Off         
+                           
+               kitt_state++;
+               break;                          
+      case 3:
+               //  0001             
+               K1.pulsewidth(KITT_OFF); // K1 Off
+               K2.pulsewidth(KITT_20);  // K2 Decay
+               K3.pulsewidth(KITT_50);  // K3 Decay
+               K4.pulsewidth(KITT_MAX); // K4 On         
+                           
+               kitt_state++;
+               break;                         
+      case 4:                 
+               //  0001                          
+               K1.pulsewidth(KITT_OFF); // K1 Off
+               K2.pulsewidth(KITT_OFF); // K2 Off
+               K3.pulsewidth(KITT_20);  // K3 Decay
+               K4.pulsewidth(KITT_MAX); // K4 On         
+                           
+               kitt_state++;
+               break;             
+      case 5:
+               //  0010
+               K1.pulsewidth(KITT_OFF); // K1 Off
+               K2.pulsewidth(KITT_OFF); // K2 Off
+               K3.pulsewidth(KITT_MAX); // K3 On
+               K4.pulsewidth(KITT_50);  // K4 Decay         
+                           
+               kitt_state++;
+               break;             
+      case 6:             
+               //  0100
+               K1.pulsewidth(KITT_OFF); // K1 Off
+               K2.pulsewidth(KITT_MAX); // K2 On
+               K3.pulsewidth(KITT_50);  // K3 Decay
+               K4.pulsewidth(KITT_20);  // K4 Decay         
+                           
+               kitt_state++;
+               break;             
+      case 7:             
+               //  1000             
+               K1.pulsewidth(KITT_MAX); // K1 On
+               K2.pulsewidth(KITT_50);  // K2 Decay
+               K3.pulsewidth(KITT_20);  // K3 Decay
+               K4.pulsewidth(KITT_OFF); // K4 Off         
+                           
+               kitt_state = 0;
+               break;            
+
+    } //switch
+  } //if              
+                                          
+}
+
+
+void heartbeat_start() {
+  heartbeat.attach(&pulse, 0.1);
+  
+  K1.period(KITT_PERIOD);          // KITT LEDs period
+
+  heartbeatflag = true;
+}
+
+void heartbeat_stop() {
+  heartbeat.detach();
+  heartbeatflag = false;
+}
+
+
+int main() {
+
+  bool running=true;
+  char command;
+    pc.printf("Hello World!\n\r");
+
+    heartbeat_start();
+
+    show_menu();
+               
+    while(running) {
+          
+       if(pc.readable()) {
+         command = pc.getc();       
+         pc.printf("command= %c \n\r", command);         
+
+         switch (command) {
+          case '0' :
+                     pc.printf("Done\n\r");                    
+                     running = false;  
+                     break;
+          
+          case '1' :
+                     show_menu();
+                     break;
+                    
+          case '2' :
+                     pc.printf("Start\n\r");          
+                     heartbeatflag = true;                     
+                     break;
+
+          case '3' :
+                     pc.printf("Stop\n\r");          
+                     heartbeatflag = false;                                          
+                     
+                     break;
+                    
+         } //switch
+     } // if   
+   } //while 
+
+   pc.printf("Bye World!\n\r");                          
+}