No PSD profile-type commands for LTE-M/NB-IoT

library.json

@@ -1,6 +1,6 @@
 {
   "name": "TinyGSM",
-  "version": "0.4.6",
+  "version": "0.4.7",
   "description": "A small Arduino library for GPRS modules, that just works. Includes examples for Blynk, MQTT, File Download, and Web Client. Supports many GSM and wifi modules with AT command interfaces.",
   "keywords": "GSM, AT commands, AT, SIM800, SIM900, A6, A7, M590, ESP8266, SIM800A, SIM800C, SIM800L, SIM800H, SIM808, SIM868, SIM900A, SIM900D, SIM908, SIM968, M95, MC60, MC60E, BG96, ublox",
   "authors":

library.properties

@@ -1,5 +1,5 @@
 name=TinyGSM
-version=0.4.6
+version=0.4.7
 author=Volodymyr Shymanskyy
 maintainer=Volodymyr Shymanskyy
 sentence=A small Arduino library for GPRS modules, that just works.

src/TinyGsmClientUBLOX.h

@@ -201,6 +201,7 @@ public:
     : TinyGsmModem(stream), stream(stream)
   {
     memset(sockets, 0, sizeof(sockets));
+    isCatM_NBIoT = false;
   }
 
   /*
@@ -215,7 +216,19 @@ public:
     if (waitResponse() != 1) {
       return false;
     }
-    DBG(GF("### Modem:"), getModemName());
+
+#ifdef TINY_GSM_DEBUG
+    sendAT(GF("+CMEE=2"));  // turn on verbose error codes
+#else
+    sendAT(GF("+CMEE=0"));  // turn off error codes
+#endif
+    waitResponse();
+
+    String name = getModemName();
+    DBG(GF("### Modem:"), name);
+    if (name.startsWith("u-blox SARA-R") or name.startsWith("u-blox SARA-N")) {
+      isCatM_NBIoT = true;
+    }
     int ret = getSimStatus();
     if (ret != SIM_READY && pin != NULL && strlen(pin) > 0) {
       simUnlock(pin);
@@ -230,7 +243,6 @@ public:
       return "u-blox Cellular Modem";
     }
     res1.replace(GSM_NL "OK" GSM_NL, "");
-    res1.replace(GSM_NL, " ");
     res1.trim();
 
     sendAT(GF("+GMM"));
@@ -239,7 +251,6 @@ public:
       return "u-blox Cellular Modem";
     }
     res2.replace(GSM_NL "OK" GSM_NL, "");
-    res2.replace(GSM_NL, " ");
     res2.trim();
 
     return res1 + String(' ') + res2;
@@ -440,14 +451,34 @@ public:
       return false;
     }
 
-    // NOTE:  Setting up the PSD profile/PDP context with the UPSD commands
+    // Using CGDCONT sets up an "external" PCP context, i.e. a data connection
-    // sets up an "internal" PDP context, i.e. a data connection using the
+    // using the external IP stack (e.g. Windows dial up) and PPP link over the
-    // internal IP stack and related AT commands for sockets.
+    // serial interface.  This is the only command set supported by the LTE-M
+    // and LTE NB-IoT modules (SARA-R4x, SARA-N4X, SARA-N2x)
 
-    // Using CGDCONT would set up an "external" PCP context, i.e. a data
+    // Setting up the PSD profile/PDP context with the UPSD commands sets up an
-    // connection using the external IP stack (e.g. Windows dial up) and PPP
+    // "internal" PDP context, i.e. a data connection using the internal IP
-    // link over the serial interface.
+    // stack and related AT commands for sockets. This is what we're using for
+    // all of the other modules.
 
+    if (isCatM_NBIoT) {
+      if (user && strlen(user) > 0) {
+        sendAT(GF("+CGAUTH=1,0,\""), user, GF("\",\""), pwd, '"');  // Set the authentication
+        waitResponse();
+      }
+
+      sendAT(GF("+CGDCONT=1,\"IP\",\""), apn, '"');  // Define the PDP context
+      waitResponse();
+
+      sendAT(GF("+CGACT=1,1"));  // activate PDP profile/context 1
+      if (waitResponse(150000L) != 1) {
+        return false;
+      }
+
+      return true;
+    }
+
+    else {
       sendAT(GF("+UPSD=0,1,\""), apn, '"');  // Set APN for PSD profile 0
       waitResponse();
 
@@ -463,14 +494,6 @@ public:
       sendAT(GF("+UPSD=0,7,\"0.0.0.0\"")); // Dynamic IP on PSD profile 0
       waitResponse();
 
-    // LTE modules do not support UPSDA and UPSND commands, even for "internal" contexts
-    if (getModemName().startsWith(GF("SARA-R")) or getModemName().startsWith(GF("SARA-N")))
-      sendAT(GF("+CGACT=0,1"));  // activate PDP profile/context 0
-      if (waitResponse(150000L) != 1) {
-        return false;
-      }
-
-    else {
       sendAT(GF("+UPSDA=0,3")); // Activate the PDP context associated with profile 0
       if (waitResponse(360000L) != 1) {
         return false;
@@ -481,20 +504,20 @@ public:
         return false;
       }
       waitResponse();
-      return true;
-    }
 
       return true;
     }
+  }
 
   bool gprsDisconnect() {
 
-    // LTE modules do not support UPSDA and UPSND commands, even for "internal" contexts
+    // LTE-M and NB-IoT modules do not support UPSx commands
-    if (getModemName().startsWith(GF("SARA-R")) or getModemName().startsWith(GF("SARA-N")))
+    if (isCatM_NBIoT) {
-      sendAT(GF("+CGACT=0,0"));  // activate PDP profile/context 0
+      sendAT(GF("+CGACT=1,0"));  // Deactivate PDP context 0
       if (waitResponse(40000L) != 1) {
         return false;
       }
+    }
 
     else {
       sendAT(GF("+UPSDA=0,4"));  // Deactivate the PDP context associated with profile 0
@@ -527,14 +550,14 @@ public:
    */
 
   String getLocalIP() {
-    // LTE modules do not support UPSDA and UPSND commands, even for "internal" contexts
+    // LTE-M and NB-IoT modules do not support UPSx commands
-    if (getModemName().startsWith(GF("SARA-R")) or getModemName().startsWith(GF("SARA-N"))) {
+    if (isCatM_NBIoT) {
-      sendAT(GF("+CGPADDR?"));
+      sendAT(GF("+CGPADDR"));
       if (waitResponse(GF(GSM_NL "+CGPADDR:")) != 1) {
         return "";
       }
-      streamSkipUntil('\"');  // Skip context id
+      streamSkipUntil(',');  // Skip context id
-      String res = stream.readStringUntil('\"');
+      String res = stream.readStringUntil('\r');
       if (waitResponse() != 1) {
         return "";
       }
@@ -815,6 +838,7 @@ public:
 
 protected:
   GsmClient*    sockets[TINY_GSM_MUX_COUNT];
+  bool          isCatM_NBIoT;
 };
 
 #endif