u-blox / C027_Support

support library for C027 helper functions for Buffer Pipes, Buffered Serial Port (rtos capable) and GPS parsing. It includes modem APIs for USSD, SMS and Sockets.

Dependents:   HTTPClient_Cellular_HelloWorld Cellular_HelloMQTT MbedSmartRestMain Car_Bon_car_module ... more

This library is intended to be used with u-blox products such as the C027 or a shield with u-blox cellular and GPS modules like the cellular and positioning shield from Embedded Artist.

For 2G/GSM and 3G/UMTS you need to:

  • have a SIM card and know its PIN number
  • need to know you network operators APN setting These setting should be passed to the connect or init and join functions. You can also extend the APN database in MDMAPN.h.

For CDMA products you need to make sure that you have provisioned and activated the modem with either Sprint or Verizon.

Diff: MDM.cpp

Revision:
62:a02f026bdd7c
Parent:
61:eafa56058398
Child:
65:dd94f920a762
--- a/MDM.cpp	Tue May 13 08:57:04 2014 +0000
+++ b/MDM.cpp	Tue May 13 13:54:05 2014 +0000
@@ -9,6 +9,7 @@
 #define MAX_SIZE        256  // max expected messages
 // some helper 
 #define ISSOCKET(s)     (((s) >= 0) && ((s) < (sizeof(_sockets)/sizeof(*_sockets))))
+#define WAIT_MS(ms)     wait_ms(ms) // you may choose to use Thread::wait(ms)
 
 #ifdef DEBUG
 void dump(const char* buf, int len)
@@ -191,7 +192,7 @@
             }
         }
         // relax a bit
-        wait_ms(10); 
+        WAIT_MS(10); 
     }
     while (timer.read_ms() < timeout_ms);
     timer.stop();
@@ -237,7 +238,7 @@
         if ((netStatus.reg == REG_DENIED) || (i == 0))
             break;;
         i --;
-        wait_ms(1000);
+        WAIT_MS(1000);
     }
     if (dump) dumpNetStatus(&netStatus);
     if ((netStatus.reg == REG_DENIED) || (i == 0))
@@ -252,6 +253,8 @@
 bool MDMParser::init(const char* simpin, DevStatus* status)
 {
     int i = 5;
+    // we should wait some time before 
+    WAIT_MS(1000);
     while (i--) {
         // check interface and disable local echo
         sendFormated("AT\r\n");
@@ -272,7 +275,7 @@
     sendFormated("AT+IPR=115200\r\n");
     if (RESP_OK != waitFinalResp())
         return false;
-    wait_ms(40);
+    WAIT_MS(40);
     // identify the module 
     sendFormated("ATI\r\n");
     if (RESP_OK != waitFinalResp(_cbATI, &_dev.dev))
@@ -323,6 +326,7 @@
         for (int i = 0; (i < 5) && (_dev.sim != SIM_READY); i++) {
             sendFormated("AT+CPIN?\r\n");
             int ret = waitFinalResp(_cbCPIN, &_dev.sim);
+            // having an error here is ok (sim may still be initializing)
             if ((RESP_OK != ret) && (RESP_ERROR != ret))
                 return false;
             // Enter PIN if needed
@@ -334,8 +338,9 @@
                 sendFormated("AT+CPIN=%s\r\n", simpin);
                 if (RESP_OK != waitFinalResp(_cbCPIN, &_dev.sim))
                     return false;
-            } else if (_dev.sim != SIM_READY)
-                wait_ms(1000);
+            } else if (_dev.sim != SIM_READY) {
+                WAIT_MS(1000);
+            }
         }
         if (_dev.sim != SIM_READY)
             return false;
@@ -773,7 +778,7 @@
         sendFormated("AT+USOWR=%d,%d\r\n",socket,len);
         if (RESP_PROMPT != waitFinalResp())
             return SOCKET_ERROR;
-        wait_ms(50);
+        WAIT_MS(50);
         send(buf, len);
         if (RESP_OK != waitFinalResp()) 
             return SOCKET_ERROR;
@@ -788,7 +793,7 @@
         sendFormated("AT+USOWR=%d,\"" IPSTR "\",%d,%d\r\n",socket,IPNUM(ip),port,len);
         if (RESP_PROMPT != waitFinalResp())
             return SOCKET_ERROR;
-        wait_ms(50);
+        WAIT_MS(50);
         send(buf, len);
         if (RESP_OK != waitFinalResp()) 
             return SOCKET_ERROR;