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:
35:9275215a3a5b
Parent:
33:fb8fb5021b09
Child:
36:c4df7bcf9b6e
--- a/MDM.cpp	Wed Apr 09 14:25:41 2014 +0000
+++ b/MDM.cpp	Thu Apr 10 13:05:45 2014 +0000
@@ -4,7 +4,7 @@
 #include "MDM.h"
 
 #define TRACE           (0)?:printf
-//#define DEBUG         // enable this for AT command debugging
+#define DEBUG         // enable this for AT command debugging
 #define PROFILE         "0"   // this is the psd profile used
 #define MAX_SIZE        256  // max expected messages
 // some helper 
@@ -40,7 +40,7 @@
 {
     memset(&_dev, 0, sizeof(_dev));
     memset(&_net, 0, sizeof(_net));
-    _ip      = NOIP;
+    _ip        = NOIP;
     memset(_sockets, 0, sizeof(_sockets));
 }
 
@@ -78,6 +78,7 @@
             int len = LENGTH(ret);
             int type = TYPE(ret);
             const char* s = (type == TYPE_UNKNOWN)? YEL("UNK") : 
+                            (type == TYPE_TEXT)   ? MAG("TXT") : 
                             (type == TYPE_OK   )  ? GRE("OK ") : 
                             (type == TYPE_ERROR)  ? RED("ERR") : 
                             (type == TYPE_PLUS)   ? CYA(" + ") : 
@@ -179,7 +180,7 @@
 
 int MDMParser::_cbString(int type, const char* buf, int len, char* str)
 {
-    if (str && (type == TYPE_UNKNOWN)) {
+    if (str && (type == TYPE_TEXT)) {
         if (sscanf(buf, "\r\n%s\r\n", str) == 1)
             /*nothing*/;
     }
@@ -188,7 +189,7 @@
 
 int MDMParser::_cbInt(int type, const char* buf, int len, int* val)
 {
-    if (val && (type == TYPE_UNKNOWN)) {
+    if (val && (type == TYPE_TEXT)) {
         if (sscanf(buf, "\r\n%d\r\n", val) == 1)
             /*nothing*/;
     }
@@ -199,12 +200,15 @@
 
 bool MDMParser::init(const char* pin, DevStatus* status)
 {
-    for(int i = 0; i < 5; i++) {
+    int i = 5;
+    while (i--) {
         // check interface and disable local echo
         sendFormated("AT\r\n");
         if(OK == waitFinalResp())
             break;
     }
+    if (i == 0)
+        return false;
     // echo off
     sendFormated("AT E0\r\n");
     if(OK != waitFinalResp())
@@ -226,10 +230,6 @@
         return false;
     // device specific init
     if (_dev.dev == DEV_LISA_C200) {
-        // disable flow control
-        sendFormated("AT+IFC=0,0\r\n");
-        if (OK != waitFinalResp())
-            return false;
         // get the manufacturer
         sendFormated("AT+GMI\r\n");
         if (OK != waitFinalResp(_cbString, _dev.manu))
@@ -247,20 +247,13 @@
         if (OK != waitFinalResp(_cbString, _dev.meid))
             return false;
     } else {
-        // disable flow control
-        sendFormated("AT&K0\r\n");
-        if (OK != waitFinalResp())
-            return false;
-        // enable power saving
-        sendFormated("AT+UPSV=1\r\n");
-        if (OK != waitFinalResp())
-            return false;
-        // enable the network identification feature 
         if (_dev.dev == DEV_LISA_U200) {
+            // enable the network identification feature 
             sendFormated("AT+UGPIOC=20,2\r\n");
             if (OK != waitFinalResp())
                 return false;
         } else {
+            // enable the network identification feature 
             sendFormated("AT+UGPIOC=16,2\r\n");
             if (OK != waitFinalResp())
                 return false;
@@ -324,6 +317,14 @@
     sendFormated("AT+CIMI\r\n");
     if (OK != waitFinalResp(_cbString, _dev.imsi))
         return false;
+    // enable power saving
+    if (_dev.lpm != LPM_DISABLED) {
+         // enable power saving (requires flow control, cts at least)
+        sendFormated("AT+UPSV=1\r\n");
+        if (OK != waitFinalResp())
+            return false;  
+        _dev.lpm = LPM_ACTIVE;
+    }
     if (status)
         memcpy(status, &_dev, sizeof(DevStatus));
     return true; 
@@ -331,7 +332,7 @@
 
 int MDMParser::_cbATI(int type, const char* buf, int len, Dev* dev)
 {
-    if ((type == TYPE_UNKNOWN) && dev) {
+    if ((type == TYPE_TEXT) && dev) {
         if (strstr(buf, "SARA-G350")) {
             *dev = DEV_SARA_G350;
             /*TRACE("Identified Device: SARA-G350 2G\\n")*/;
@@ -857,7 +858,7 @@
         if (type == TYPE_PLUS) {
             if (sscanf(buf, "\r\n+CMGR: \"%*[^\"]\",\"%[^\"]", param->num) == 1) {
             }
-        } else if ((type == TYPE_UNKNOWN) && (buf[len-2] == '\r') && (buf[len-1] == '\n')) {
+        } else if ((type == TYPE_TEXT) && (buf[len-2] == '\r') && (buf[len-1] == '\n')) {
             memcpy(param->buf, buf, len-2);
             param->buf[len-2] = '\0';
         }
@@ -912,6 +913,10 @@
         }
     }
     if (!end)                               return o; // no termination
+    // at least any char
+    if (++o > len)                      return WAIT;
+    pipe->next();
+    // check the end     
     int x = 0;
     while (end[x]) {
         if (++o > len)                      return WAIT;
@@ -988,6 +993,7 @@
             { "\r\n+",                  "\r\n",             TYPE_PLUS       },
             { "\r\n@",                  NULL,               TYPE_PROMPT     }, // Sockets
             { "\r\n>",                  NULL,               TYPE_PROMPT     }, // SMS
+            { "\r\n",                   "\r\n",             TYPE_TEXT       },
         };
         for (int i = 0; i < sizeof(lutF)/sizeof(*lutF); i ++) {
             pipe->set(unkn);
@@ -1022,22 +1028,26 @@
 
 MDMSerial::MDMSerial(PinName tx /*= MDMTXD*/, PinName rx /*= MDMRXD*/, 
             int baudrate /*= MDMBAUD*/,
-#if DEVICE_SERIAL_FC
             PinName rts /*= MDMRTS*/, PinName cts /*= MDMCTS*/, 
-#endif
             int rxSize /*= 256*/, int txSize /*= 128*/) : 
-#if DEVICE_SERIAL_FC
-            SerialPipe(tx, rx, rts, cts, rxSize, txSize)
-#else
-            SerialPipe(tx, rx, rxSize, txSize)
-#endif
+            SerialPipe(tx, rx, rxSize, txSize) 
 {
     baud(baudrate);
+    // have it fix low 
+#if DEVICE_SERIAL_FC
+    if ((rts != NC) || (cts != NC))
+    {
+        Flow flow = (cts == NC) ? RTS :
+                    (rts == NC) ? CTS : RTSCTS ;
+        set_flow_control(flow, rts, cts);
+        if (cts != NC) _dev.lpm = LPM_ENABLED;
+    }
+#endif
 }
 
 int MDMSerial::_send(const void* buf, int len)   
 { 
-    return put((const char*)buf, len, true/*=blocking*/); 
+    return put((const char*)buf, len, true/*=blocking*/);
 }
 
 int MDMSerial::getLine(char* buffer, int length)
@@ -1054,4 +1064,4 @@
 MDMUsb::MDMUsb(void)                             { }
 int MDMUsb::_send(const void* buf, int len)      { return len; }
 int MDMUsb::getLine(char* buffer, int length)    { return NOT_FOUND; }
-#endif
\ No newline at end of file
+#endif