Diff: main.cpp

Revision:

0:2fda8809cd0e

Child:

1:5cf36d70a7d2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed May 25 02:33:27 2011 +0000
@@ -0,0 +1,102 @@
+#include "mbed.h"
+// EasyVR Speech Recognition and Speech Synthesis Demo
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+DigitalOut led3(LED3);
+DigitalOut led4(LED4);
+Serial device(p13, p14);  // tx, rx
+Serial pc(USBTX,USBRX); //USB virtual com port can be used to watch VR command responses
+
+// Function to play a sound file on speaker
+void speak(int num) {
+    device.putc('w');
+    // small delay is needed between characters
+    wait(.001);
+    device.putc('A' + num/10);
+    wait(.001);
+    device.putc('A' + num%10);
+    wait(.001);
+    device.putc('P');
+    while (device.getc()!='o') {}
+    wait(.25);
+}
+
+int main() {
+    char rchar=0;
+    char echar=0;
+    led1=0;
+    led2=0;
+    led3=0;
+    led4=0;
+// wake up EasyVR
+    device.putc('b');
+    while (device.getc()!='o') {
+        device.putc('b');
+        wait(0.1);
+    }
+    // play reset message
+    speak(3);
+// Use SD recogniton and wait for password (mbed)
+    while (rchar!='A') {
+        wait(.001);
+        device.putc('d');
+// a small delay is needed when sending EasyVR several characters
+        wait(.001);
+        device.putc('B');
+        while (device.readable()!=0) {}
+        rchar=device.getc();
+        pc.putc(rchar);
+        // word recognized
+        if (rchar=='r') {
+            wait(.001);
+            device.putc(' ');
+            rchar=device.getc();
+            pc.putc(rchar);
+        // error
+        } else if (rchar=='e') {
+            wait(.001);
+            device.putc(' ');
+            rchar=device.getc();
+            device.putc(' ');
+            rchar=device.getc();
+        }
+    }
+// voice ack for password
+    speak(5);
+    wait(1);
+// loop forever waiting for number commands
+    while (1) {
+    // voice prompt for input - don't prompt after a timeout or error
+        if ((rchar!='t')&&(rchar!='e')) speak(1);
+        wait(.002);
+    // SI recog of numbers 0..10
+        device.putc('i');
+        wait(.001);
+        device.putc('D');
+        while (device.readable()!=0) {}
+        rchar=device.getc();
+        pc.putc(rchar);
+    // number was recognized
+        if (rchar=='s') {
+            wait(.001);
+            device.putc(' ');
+            rchar=device.getc();
+            pc.putc(rchar);
+            if (rchar=='B') led1 = !led1;
+            if (rchar=='C') led2 = !led2;
+            if (rchar=='D') led3 = !led3;
+            if (rchar=='E') led4 = !led4;
+            // voice ack
+            speak(2);
+    // recognition error
+        } else if (rchar=='e') {
+            wait(.001);
+            device.putc(' ');
+            echar=device.getc();
+            device.putc(' ');
+            echar=device.getc();
+            // prompt user to restate command
+            speak(4);
+        }
+    }
+}