Diff: Wifly.cpp

Revision:

19:cf1a7a5cc8d6

Parent:

18:88a26cd00ba3

--- a/Wifly.cpp	Mon Feb 20 16:08:42 2012 +0000
+++ b/Wifly.cpp	Wed May 09 11:46:39 2012 +0000
@@ -20,10 +20,6 @@
     reset();
 }
 
-
-
-
-
 Wifly::Wifly(   PinName tx, PinName rx, PinName _reset, char * ssid, char * ip, char * netmask, int channel, int baudrate):
         wifi(tx, rx), reset_pin(_reset) {
     wifi.baud(baudrate);
@@ -37,7 +33,6 @@
     reset();
 }
 
-
 void Wifly::handler_rx(void) {
 
     //read the character
@@ -50,15 +45,13 @@
     rx.call();
 }
 
-void Wifly::attach_rx(bool null) {
-    if (!null)
+void Wifly::attach_rx(bool callback) {
+    if (!callback)
         wifi.attach(NULL);
     else
         wifi.attach(this, &Wifly::handler_rx);
 }
 
-
-
 bool Wifly::send(char * str, char * ACK, char * res) {
     char read;
     size_t found = string::npos;
@@ -69,9 +62,8 @@
     printf("will send: %s\r\n",str);
 #endif
 
-
     attach_rx(false);
-    if (!strcmp(ACK, "NO")) {
+    if (!ACK || !strcmp(ACK, "NO")) {
         wifi.printf("%s", str);
     } else {
         //We flush the buffer
@@ -115,7 +107,7 @@
         return true;
     }
 
-    //the user wants the result from the command (ACK == "NO", res != NULL)
+    //the user wants the result from the command (ACK == NULL, res != NULL)
     if ( res != NULL) {
         int i = 0;
         Timer timeout;
@@ -123,6 +115,7 @@
         while (1) {
             if (timeout.read() > 3) {
                 read = NULL;
+                attach_rx(true);
                 return false;
             } else {
                 if (tmr.read_ms() > 500) {
@@ -130,18 +123,28 @@
 #ifdef DEBUG
                     printf("user str: %s\r\n", res);
 #endif
-                    attach_rx(true);
-                    return true;
+                    break;
                 }
                 if (wifi.readable()) {
                     tmr.start();
                     read = wifi.getc();
+
+                    // wa have detected an end of response
+                    if (read == '<') {
+                        res[i] = 0;
+                        break;
+                    }
+
+                    // we drop \r and \n
                     if ( read != '\r' && read != '\n') {
                         res[i++] = read;
                     }
                 }
             }
         }
+#ifdef DEBUG
+        //printf("user str: %s\r\n", res);
+#endif
     }
     attach_rx(true);
     return true;
@@ -156,14 +159,17 @@
 #ifdef DEBUG
             printf("join: cannot enter in cmd mode\r\n");
 #endif
-            send("a\r\n");
+            // send fake command otherwise exit() will fail as $$$exit\r will be sent
+            // this is because there is no \ê at the end of $$$
+            send("a\r");
             wait(0.2);
             exit();
             if (!cmdMode())
                 return false;
         }
 
-        if (!send("get w\r", "NO", cmd)) {
+        // to get all wlan parameters
+        if (!send("get w\r", NULL, cmd)) {
 #ifdef DEBUG
             printf("join: cannot get wlan settings\r\n");
 #endif
@@ -171,12 +177,15 @@
             return false;
         }
 
+        // if the wlan parameters are already known, we just connect without resending all commands
         if ((string(cmd).find(ssid) != string::npos) && (string(cmd).find(phrase) != string::npos) ) {
 #ifdef DEBUG
             printf("ssid found && phrase found\r\n");
 #endif
-            while (1) {
-                send("show c\r", "NO", cmd);
+            Timer tmr;
+            tmr.start();
+            while (tmr.read() < 2) {
+                send("show c\r", NULL, cmd);
 #ifdef DEBUG
                 printf("join: state of conn: %s\r\n", cmd);
 #endif
@@ -184,11 +193,13 @@
                     exit();
                     return true;
                 }
-                wait(1);
+                wait(0.2);
             }
         }
 
+#ifdef DEBUG
         printf("getw: %s\r\n", cmd);
+#endif
 
         // ssid
         sprintf(cmd, "set w s %s\r", ssid);
@@ -251,7 +262,6 @@
                 exit();
                 return false;
             }
-
         }
 
         //key step
@@ -298,9 +308,6 @@
         }
         exit();
 
-        wait(0.1);
-        flush();
-
 #ifdef DEBUG
         printf("\r\nssid: %s\r\nphrase: %s\r\nsecurity: %s\r\n\r\n", this->ssid, this->phrase, (wpa) ? "WPA" : "WEP");
 #endif
@@ -397,15 +404,10 @@
             return false;
         }
 
-        flush();
-
-        send("reboot\r", "NO");
+        send("reboot\r", NULL);
 #ifdef DEBUG
         printf("\r\ncreating an adhoc\r\nnetwork: %s\r\nip: %s\r\nnetmask: %s\r\nchannel: %d\r\n\r\n", ssid, ip, netmask, channel);
 #endif
-
-        wait(0.1);
-        flush();
         return true;
     } else {
 #ifdef DEBUG
@@ -463,6 +465,7 @@
 
 
 bool Wifly::exit() {
+    flush();
     return send("exit\r", "EXIT");
 }