Diff: main.cpp

Revision:

0:7b5c57924414

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Mar 11 20:20:42 2015 +0000
@@ -0,0 +1,244 @@
+/**
+ * XBee Example Test
+ * A test application that demonstrates the ability
+ * of transmitting serial data via an XBee module with
+ * an mbed microprocesor.
+ * By: Vlad Cazan
+ * Date: Tuesday, September 29th 2009
+ */
+
+#include "mbed.h"
+#include <string>
+#include "MODSERIAL.h"
+
+Serial xbee1(p9, p10); //Creates a variable for serial comunication through pin 9 and 10
+MODSERIAL xbee(p9,p10);
+DigitalOut rst1(p11); //Digital reset for the XBee, 200ns for reset
+DigitalOut myled(LED3);//Create variable for Led 3 on the mbed
+DigitalOut myled2(LED4);//Create variable for Led 4 on the mbed
+int char_count;
+Serial pc(USBTX, USBRX);//Opens up serial communication through the USB port via the computer
+char c;
+PinName _tx = p9;
+PinName _rx = p10;
+
+int ConfigMode()
+{
+    int a;
+    Serial DATA(_tx,_rx);
+    wait(2);
+    DATA.printf("+++");
+    while (a != 75) {
+        if (DATA.readable()) {
+            a = DATA.getc();
+        }
+    }
+    wait(1);
+    printf("Configuration Complete!\n");
+    return 1;
+}
+
+int GetSerial(int *serial_no)
+{
+    int sh1,sh2,sh3,sl1,sl2,sl3,sl4;
+    Serial DATA(_tx,_rx);
+    wait_ms(50);
+    DATA.printf("ATSL \r");
+    DATA.scanf ("%2x%2x%2x%2x",&sl1,&sl2,&sl3,&sl4);
+    wait_ms(500);
+    DATA.printf("ATSH \r");
+    DATA.scanf ("%2x%2x%2x",&sh1,&sh2,&sh3);
+ 
+    serial_no[0] = sh1;
+    serial_no[1] = sh2;
+    serial_no[2] = sh3;
+    serial_no[3] = sl1;
+    serial_no[4] = sl2;
+    serial_no[5] = sl3;
+    serial_no[6] = sl4;
+ 
+    return 1;
+}
+
+int SetKey(char* key)
+{
+    Serial DATA(_tx,_rx);
+    DATA.printf("ATEE 0 \r");
+ 
+    DATA.scanf ("%*s");
+    wait_ms(1);
+    DATA.printf("ATKY %s \r",key);
+    DATA.scanf ("%*s");
+    return 1;
+}
+
+int SetPanId(int pan_id)
+{
+    Serial DATA(_tx,_rx);
+    wait_ms(5);
+    DATA.printf("ATID %i\r",pan_id);
+    DATA.scanf ("%*s");
+    return 1;
+}
+
+int WriteSettings()
+{
+    Serial DATA(_tx,_rx);
+    wait_ms(5);
+    DATA.printf("ATWR \r");
+    DATA.scanf ("%*s");
+    return 1;
+}
+
+int ExitConfigMode()
+{
+    Serial DATA(_tx,_rx);
+    wait_ms(5);
+    DATA.printf("ATCN \r");
+    DATA.scanf ("%*s");
+    return 1;
+}
+
+void Reset()
+{
+    rst1 = 0;
+    wait_ms(10);
+    rst1 = 1;
+    wait_ms(1);
+}
+
+int read_sentence(char* input){
+
+    char tmp;
+    while(!pc.readable());
+    tmp = pc.getc();
+    pc.putc(tmp);
+    int counter = 0;
+    while(tmp != '\n'){
+        input[counter] = tmp;
+        if(pc.readable()){
+            tmp = pc.getc();
+            pc.putc(tmp);
+            counter++;
+        } 
+    }
+    
+    pc.printf("\n");
+    return counter-1;
+}
+
+int read_xbee_sentence(char* input){
+    char tmp;
+    while(!xbee1.readable());
+    tmp = xbee1.getc();
+    int counter = 0;
+    while(tmp != '\n'){
+        input[counter] = tmp;
+        if(xbee1.readable()){
+            tmp = xbee1.getc();
+            counter++;
+        } 
+    }
+    return counter;
+}
+
+int main() {
+    rst1 = 0; //Set reset pin to 0
+    myled = 0;//Set LED3 to 0
+    myled2= 0;//Set LED4 to 0
+    wait_ms(1);//Wait at least one millisecond
+    rst1 = 1;//Set reset pin to 1
+    wait_ms(1);//Wait another millisecond
+    pc.printf("Student Machine\n");
+    int device_serial[8];
+    char security_key[] = {'h','e','l','l','o','m','o','b'};
+    int pan_id = 5;
+    ConfigMode();
+    GetSerial(device_serial);
+    SetKey(security_key);
+    SetPanId(pan_id);
+    WriteSettings();
+    ExitConfigMode();
+    Reset();
+    char name[255];
+    char id[255];
+    pc.printf("Your Serial No: %d\n",device_serial);
+    pc.printf("Please enter your name: \n");
+    char_count = read_sentence(name);
+    char set_name[char_count];
+    for(int i = 0;i < char_count; i++){
+      set_name[i] = name[i];    
+    }
+    pc.printf("Please enter your ID: \n");
+    char_count = read_sentence(id);
+    char set_id[char_count];
+    for(int i = 0;i < char_count; i++){
+      set_id[i] = id[i];    
+    }
+    pc.printf("Polling for available assessments!\n");
+    string t;
+    bool assessment_available = false;
+    pc.printf("AA-\n");
+    xbee1.printf("AA-\n");
+    while(!assessment_available){
+       wait(3);
+       if(xbee1.readable()){
+          char poll[30];
+          read_xbee_sentence(poll);
+          t = string(poll);
+        }
+        if(t.find("Available") != -1){
+          assessment_available = true;   
+        }else{
+            xbee1.printf("AA-\n");
+        }
+    }
+    pc.printf("A new assessment is available\n");
+    pc.printf("Connecting to the Teacher Machine\n");
+    pc.printf("%d\n",device_serial);
+    pc.printf("C-%d\n",device_serial);
+    xbee1.printf("C-%d\n",device_serial);
+    wait(2);
+    string serialKey = "";
+    for(int j = 0; j < 8; j++){
+      serialKey += device_serial[j];   
+    }    
+    while(true){
+      if(xbee1.readable()){
+         string input;
+         char sentence_store[255];
+         char_count = read_xbee_sentence(sentence_store);
+         char set_sentence_store[char_count];
+         for(int i = 0; i < char_count; i++){
+            set_sentence_store[i] = sentence_store[i];   
+         }        
+         input = string(set_sentence_store);
+         pc.printf("\n");
+         if(input.find("NReq-") != -1){
+            pc.printf("Name requested by the teacher machine. Sending your name in response\n");
+            pc.printf("NRes-%d-%s\n",device_serial,set_name);
+            xbee1.printf("NRes-%d-%s\n",device_serial,set_name);
+         }else if(input.find("IDReq-" + string(set_name)) != -1){
+            pc.printf("ID number has been requested by the teacher machine. Sending your ID number in response\n");
+            pc.printf("IDRes-%d-%s",device_serial,set_id); 
+            xbee1.printf("IDRes-%s\n",set_id);  
+         }else if(input.find("QC-") != -1){
+            int second_dash = input.find_last_of("-");
+            string question_count = input.substr(second_dash+1,input.length()-1);
+            int q_count = atoi (question_count.c_str());
+            pc.printf("The # of questions in this assessment is %d\n",q_count);
+            xbee1.printf("QA-\n");
+            char answer_store[q_count];
+            char c[10];
+            pc.printf("Please enter your answers below\n\n");
+            for(int i = 0; i < q_count; i++){
+               pc.printf("Question %d - ",i+1);
+               read_sentence(c);
+               answer_store[i] = c[0];
+            }
+            xbee1.printf("ANS-%s\n",answer_store);
+         }
+         
+       }   
+    }
+}
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