Diff: GSMLibrary.cpp

Revision:

2:8352ad91f2ee

Parent:

0:41904adca656

Child:

6:3ccc86304c2c

--- a/GSMLibrary.cpp	Thu Mar 05 20:51:04 2015 +0000
+++ b/GSMLibrary.cpp	Thu Mar 05 21:24:31 2015 +0000
@@ -1,7 +1,10 @@
 #include "GSMLibrary.h"
 #include "gsmqueue.h"
+#include <string.h>
 
-
+#define TIME_CONST 1
+#define SECONDS_TIMEOUT 10
+#define TIMEOUTLIMIT TIME_CONST //$change check with main code this will set up condition fior timeout.
 
 //definition for AT comands
 #define AT_OK "AT"
@@ -29,48 +32,51 @@
 
 char correct = 0;
 char send = 0;
-char timeout = 0;
+char timeout_count = 0;
 char received = 0;
+char timeout_limit = TIMEOUTLIMIT;
 
 void gsm_tick(){
-    //pre action
-    switch(gsm_current_state){
-        case GSM_INITIALIZE:
-            correct = 0;
-            timeout = 0;
-            received = 0;
-            break;
-        case GSM_AT_OK:
-            break;
-        case GSM_AT_CSQ:
-            break;
-        case GSM_AT_CREG:
-            break;
-        case GSM_AT_CMGF:
-            break;
-        case GSM_AT_CMGS:
-            break;
-        case GSM_AT_SENDSMS:
-            break;
-        case GSM_SUCCESS:
-            break;
-    }        
     
     //post action
     switch(gsm_current_state){
+        //when send flag is on , send AT_OK message to gsm.
         case GSM_INITIALIZE:
-            if(send){
+            pc.printf("gsm_initilize state\r\n");//&debug
+            correct = 0;
+            timeout_count = 0;
+            received = 0;
+            if(send){ //send first at_ok message
+                 resetGSMIdleBit();
+                 pc.printf("sending AT_OK\r\n");//&debug
                  gsm.puts(AT_OK);
                  gsm.puts("\r\n"); 
-                gsm_current_state = GSM_AT_OK;
+                 gsm_current_state = GSM_AT_OK;
             }
             else
                 gsm_current_state = GSM_INITIALIZE;
             break;
+         // check for repsonse to AT and if correct send AT+CSQ message   
         case GSM_AT_OK:
+        timeout_count++;
+        pc.printf("inside AT_OK state\r\n");//&debug
+            if(getGSMIdleBit()){
+                printQueue(); //$debug 
+                if(findInQueue(AT_OK)){
+                    timeout_count = 0;
+                    resetGSMIdleBit();
+                    pc.printf("sending AT_CSQ\r\n");//&debug
+                    gsm.puts(AT_CSQ);
+                    gsm.puts("\r\n"); 
+                    gsm_current_state = GSM_AT_CSQ;
+                }
+                else
+                    gsm_current_state = GSM_INITIALIZE;
+            }
+            if(timeout_count >= timeout_limit)
+                gsm_current_state = GSM_INITIALIZE;
+            break;
             
-            gsm_current_state = GSM_AT_CSQ;
-            break;
         case GSM_AT_CSQ:
             gsm_current_state = GSM_AT_CREG;
             break;