C027_Support - support library for C027 helper functions for Buf…

u-blox » Code » 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:: 103:197fa7920ad8
Parent:: 102:fb982ff9da82
Child:: 104:c64ba749a422

--- a/MDM.cpp	Thu Jul 03 18:44:32 2014 +0000
+++ b/MDM.cpp	Thu Jul 03 21:00:22 2014 +0000
@@ -7,8 +7,10 @@
                 
 #define PROFILE         "0"   //!< this is the psd profile used
 #define MAX_SIZE        128   //!< max expected messages
+// num sockets
+#define MAXSOCKET     (sizeof(_sockets)/sizeof(*_sockets))
 //! test if it is a socket
-#define ISSOCKET(s)     (((s) >= 0) && ((s) < (sizeof(_sockets)/sizeof(*_sockets))))
+#define ISSOCKET(s)     (((s) >= 0) && ((s) < MAXSOCKET) && (_sockets[s].handle != SOCKET_ERROR))
 //! check for timeout
 #define TIMEOUT(t, ms)  ((ms != TIMEOUT_BLOCKING) && (ms < t.read_ms())) 
 //! registration ok check helper
@@ -86,6 +88,8 @@
     _ip        = NOIP;
     _init      = false;
     memset(_sockets, 0, sizeof(_sockets));
+    for (int socket = 0; socket < MAXSOCKET; socket ++)
+        _sockets[socket].handle = SOCKET_ERROR;
 #ifdef MDM_DEBUG
     _debugLevel = 1;
     _debugTime.start();
@@ -152,21 +156,24 @@
                     TRACE("New SMS at index %d\r\n", a);
                 // Socket Specific Command ---------------------------------
                 // +UUSORD: <socket>,<length>
-                } else if ((sscanf(cmd, "UUSORD: %d,%d", &a, &b) == 2) && 
-                    ISSOCKET(a) /*&& (_sockets[a].state == SOCK_CONNECTED)*/) {
-                    TRACE("Socket %d: %d bytes pending\r\n", a, b);
-                    _sockets[a].pending = b;
+                } else if ((sscanf(cmd, "UUSORD: %d,%d", &a, &b) == 2)) {
+                    int socket = _findSocket(a);
+                    TRACE("Socket %d: handle %d has %d bytes pending\r\n", socket, a, b);
+                    if (socket != SOCKET_ERROR)
+                        _sockets[socket].pending = b;
                 // +UUSORF: <socket>,<length>
-                } else if ((sscanf(cmd, "UUSORF: %d,%d", &a, &b) == 2) && 
-                    ISSOCKET(a) /*&& (_sockets[a].state == SOCK_CONNECTED)*/) {
-                    TRACE("Socket %d: %d bytes pending\r\n", a, b);
-                    _sockets[a].pending = b;
+                } else if ((sscanf(cmd, "UUSORF: %d,%d", &a, &b) == 2)) {
+                    int socket = _findSocket(a);
+                    TRACE("Socket %d: handle %d has %d bytes pending\r\n", socket, a, b);
+                    if (socket != SOCKET_ERROR)
+                        _sockets[socket].pending = b;
                 // +UUSOCL: <socket>
-                } else if ((sscanf(cmd, "UUSOCL: %d", &a) == 1) && 
-                    ISSOCKET(a) && (_sockets[a].state == SOCK_CONNECTED)) {
-                    TRACE("Socket %d: closed by remote host\r\n", a);
-                    _sockets[a].state = SOCK_CREATED/*=CLOSED*/;
-                }                
+                } else if ((sscanf(cmd, "UUSOCL: %d", &a) == 1)) {
+                    int socket = _findSocket(a);
+                    TRACE("Socket %d: handle %d closed by remote host\r\n", socket, a);
+                    if ((socket != SOCKET_ERROR) && _sockets[socket].connected)
+                        _sockets[socket].connected = false;
+                }
                 if (_dev.dev == DEV_LISA_C200) {
                     // CDMA Specific -------------------------------------------
                     // +CREG: <n><SID>,<NID>,<stat>
@@ -872,37 +879,42 @@
 // ----------------------------------------------------------------
 // sockets
 
-int MDMParser::_cbUSOCR(int type, const char* buf, int len, int* socket)
+int MDMParser::_cbUSOCR(int type, const char* buf, int len, int* handle)
 {
-    if ((type == TYPE_PLUS) && socket) {
+    if ((type == TYPE_PLUS) && handle) {
         const char* p = strstr(buf,"+USOCR: "); 
         if (p)
-            *socket = atoi(p+8);
+            *handle = atoi(p+8);
     }
     return WAIT;
 }
 
 int MDMParser::socketSocket(IpProtocol ipproto, int port)
 {
-    int socket = SOCKET_ERROR;
+    int socket;
     LOCK();
+    // find an free socket
+    socket = _findSocket();
     TRACE("socketSocket(%d)\r\n", ipproto);
-    if ((ipproto == IPPROTO_UDP) && (port == -1)){
-        sendFormated("AT+USOCR=17\r\n");
-    } else if (ipproto == IPPROTO_UDP){
-        sendFormated("AT+USOCR=17,%d\r\n", port);
-    } else /*(ipproto == IPPROTO_TCP)*/ {
-        sendFormated("AT+USOCR=6\r\n");
-    } 
-    if (RESP_OK != waitFinalResp(_cbUSOCR, &socket))
-        socket = SOCKET_ERROR;
-    else if (!ISSOCKET(socket) || (_sockets[socket].state != SOCK_FREE))
-        socket = SOCKET_ERROR;
     if (socket != SOCKET_ERROR) {
-        // successfull
-        _sockets[socket].state = SOCK_CREATED;
-        _sockets[socket].pending = 0;
-        _sockets[socket].timeout_ms = TIMEOUT_BLOCKING;
+        if ((ipproto == IPPROTO_UDP) && (port == -1)){
+            sendFormated("AT+USOCR=17\r\n");
+        } else if (ipproto == IPPROTO_UDP){
+            sendFormated("AT+USOCR=17,%d\r\n", port);
+        } else /*(ipproto == IPPROTO_TCP)*/ {
+            sendFormated("AT+USOCR=6\r\n");
+        } 
+        int handle = SOCKET_ERROR;
+        if ((RESP_OK == waitFinalResp(_cbUSOCR, &handle)) && 
+            (handle != SOCKET_ERROR)) {
+            TRACE("Socket %d: handle %d was created\r\n", socket, handle);
+            _sockets[socket].handle     = handle;
+            _sockets[socket].timeout_ms = TIMEOUT_BLOCKING;
+            _sockets[socket].connected  = false;
+            _sockets[socket].pending    = 0;
+        }
+        else
+            socket = SOCKET_ERROR;
     }
     UNLOCK();
     return socket;
@@ -916,11 +928,11 @@
     // connect to socket
     bool ok = false; 
     LOCK();
-    if (ISSOCKET(socket) && (_sockets[socket].state == SOCK_CREATED)) {
+    if (ISSOCKET(socket) && (!_sockets[socket].connected)) {
         TRACE("socketConnect(%d,%s,%d)\r\n", socket,host,port);
-        sendFormated("AT+USOCO=%d,\"" IPSTR "\",%d\r\n", socket, IPNUM(ip), port);
+        sendFormated("AT+USOCO=%d,\"" IPSTR "\",%d\r\n", _sockets[socket].handle, IPNUM(ip), port);
         if (RESP_OK == waitFinalResp())
-            ok = _sockets[socket].state = SOCK_CONNECTED;
+            ok = _sockets[socket].connected = true;
     }
     UNLOCK();
     return ok;
@@ -931,8 +943,7 @@
     bool ok = false;
     LOCK();
     TRACE("socketIsConnected(%d)\r\n", socket);
-    ok = ISSOCKET(socket) && 
-         _sockets[socket].state == SOCK_CONNECTED;
+    ok = ISSOCKET(socket) && _sockets[socket].connected;
     UNLOCK();
     return ok;
 }
@@ -941,7 +952,7 @@
 {
     bool ok = false;
     LOCK();
-    TRACE("socketSetBlocking(%d,%d)\r\n", socket, timeout_ms);
+    TRACE("socketSetBlocking(%d,%d)\r\n", socket,timeout_ms);
     if (ISSOCKET(socket)) {
         _sockets[socket].timeout_ms = timeout_ms;
         ok = true;
@@ -954,11 +965,11 @@
 {
     bool ok = false;
     LOCK();
-    if (ISSOCKET(socket) && (_sockets[socket].state == SOCK_CONNECTED)) {
+    if (ISSOCKET(socket) && _sockets[socket].connected) {
         TRACE("socketClose(%d)\r\n", socket);
-        sendFormated("AT+USOCL=%d\r\n", socket);
+        sendFormated("AT+USOCL=%d\r\n", _sockets[socket].handle);
         if (RESP_OK == waitFinalResp()) {
-            _sockets[socket].state = SOCK_CREATED;
+            _sockets[socket].connected = false;
             ok = true;
         }
     }
@@ -972,9 +983,12 @@
     socketClose(socket);
     bool ok = true;
     LOCK();
-    if (ISSOCKET(socket) && (_sockets[socket].state == SOCK_CREATED)) {
-        TRACE("socketFree(%d)\r\n", socket);
-        _sockets[socket].state = SOCK_FREE;
+    if (ISSOCKET(socket)) {
+        TRACE("socketFree(%d)\r\n",  socket);
+        _sockets[socket].handle     = SOCKET_ERROR;
+        _sockets[socket].timeout_ms = TIMEOUT_BLOCKING;
+        _sockets[socket].connected  = false;
+        _sockets[socket].pending    = 0;
         ok = true;
     }
     UNLOCK();
@@ -993,12 +1007,14 @@
             blk = cnt;
         bool ok = false;
         LOCK();
-        sendFormated("AT+USOWR=%d,%d\r\n",socket,blk);
-        if (RESP_PROMPT == waitFinalResp()) {
-            wait_ms(50);
-            send(buf, blk);
-            if (RESP_OK == waitFinalResp()) 
-                ok = true;
+        if (ISSOCKET(socket)) {
+            sendFormated("AT+USOWR=%d,%d\r\n",_sockets[socket].handle,blk);
+            if (RESP_PROMPT == waitFinalResp()) {
+                wait_ms(50);
+                send(buf, blk);
+                if (RESP_OK == waitFinalResp()) 
+                    ok = true;
+            }
         }
         UNLOCK();
         if (!ok) 
@@ -1011,7 +1027,7 @@
 
 int MDMParser::socketSendTo(int socket, IP ip, int port, const char * buf, int len)
 {
-    TRACE("socketSendTo(%d," IPSTR ",%d,,%d)\r\n", socket, IPNUM(ip),port,len);
+    TRACE("socketSendTo(%d," IPSTR ",%d,,%d)\r\n", socket,IPNUM(ip),port,len);
     int cnt = len;
     while (cnt > 0) {
         int blk = USO_MAX_WRITE;
@@ -1019,12 +1035,14 @@
             blk = cnt;
         bool ok = false;
         LOCK();
-        sendFormated("AT+USOST=%d,\"" IPSTR "\",%d,%d\r\n",socket,IPNUM(ip),port,blk);
-        if (RESP_PROMPT == waitFinalResp()) {
-            wait_ms(50);
-            send(buf, blk);
-            if (RESP_OK == waitFinalResp())
-                ok = true;
+        if (ISSOCKET(socket)) {
+            sendFormated("AT+USOST=%d,\"" IPSTR "\",%d,%d\r\n",_sockets[socket].handle,IPNUM(ip),port,blk);
+            if (RESP_PROMPT == waitFinalResp()) {
+                wait_ms(50);
+                send(buf, blk);
+                if (RESP_OK == waitFinalResp())
+                    ok = true;
+            }
         }
         UNLOCK();
         if (!ok)
@@ -1039,11 +1057,11 @@
 {
     int pending = SOCKET_ERROR;
     LOCK();
-    if (ISSOCKET(socket) && (_sockets[socket].state == SOCK_CONNECTED)) {
+    if (ISSOCKET(socket) && _sockets[socket].connected) {
         TRACE("socketReadable(%d)\r\n", socket);
         // allow to receive unsolicited commands 
         waitFinalResp(NULL, NULL, 0);
-        if (_sockets[socket].state == SOCK_CONNECTED)
+        if (_sockets[socket].connected)
            pending = _sockets[socket].pending; 
     }
     UNLOCK();
@@ -1077,11 +1095,11 @@
         bool ok = false;        
         LOCK();
         if (ISSOCKET(socket)) {
-            if (_sockets[socket].state == SOCK_CONNECTED) {
+            if (_sockets[socket].connected) {
                 if (_sockets[socket].pending < blk)
                     blk = _sockets[socket].pending;
                 if (blk > 0) {
-                    sendFormated("AT+USORD=%d,%d\r\n",socket, blk);
+                    sendFormated("AT+USORD=%d,%d\r\n",_sockets[socket].handle, blk);
                     if (RESP_OK == waitFinalResp(_cbUSORD, buf)) {
                         _sockets[socket].pending -= blk;
                         len -= blk;
@@ -1095,7 +1113,7 @@
                     len = 0;
                     ok = true;
                 }
-            } else if (_sockets[socket].state == SOCK_CREATED) {
+            } else {
                 len = 0;
                 ok = true;
             }
@@ -1140,7 +1158,7 @@
             if (_sockets[socket].pending < blk)
                 blk = _sockets[socket].pending;
             if (blk > 0) {
-                sendFormated("AT+USORF=%d,%d\r\n",socket, blk);
+                sendFormated("AT+USORF=%d,%d\r\n",_sockets[socket].handle, blk);
                 USORFparam param;
                 param.buf = buf;
                 if (RESP_OK == waitFinalResp(_cbUSORF, &param)) {
@@ -1169,6 +1187,14 @@
     return cnt;
 }
 
+int MDMParser::_findSocket(int handle) {
+    for (int socket = 0; socket < MAXSOCKET; socket ++) {
+        if (_sockets[socket].handle == handle)
+            return socket;
+    }
+    return SOCKET_ERROR;
+}
+
 // ----------------------------------------------------------------
 
 int MDMParser::_cbCMGL(int type, const char* buf, int len, CMGLparam* param)

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Type:	Library
Created:	20 Oct 2013
Imports:	1419
Forks:	16
Commits:	140
Dependents:	34
Dependencies:	0
Followers:	138

The code in this repository is Apache licensed.

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u-blox / EA Cellular and Positioning Shield

Diff: MDM.cpp

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