Merge pull request #98 from EnviroDIY/master

XBee updates, other tweeks

library.json

@@ -16,7 +16,7 @@
   },
   "homepage": "https://github.com/vshymanskyy/TinyGSM",
   "export": {
-    "exclude": [ "extras", "tools" ]
+    "exclude": [ "extras/*", "tools/*" ]
   },
   "frameworks": [ "arduino", "energia", "wiringpi" ],
   "platforms": "*",

src/TinyGsmClientA6.h

@@ -126,7 +126,7 @@ public:
         continue;
       }
       // TODO: Read directly into user buffer?
-      if (!rx.size()) {
+      if (!rx.size() && sock_connected) {
         at->maintain();
         //break;
       }
@@ -361,7 +361,7 @@ public:
       if (isNetworkConnected()) {
         return true;
       }
-      delay(500);
+      delay(250);
     }
     return false;
   }
@@ -710,7 +710,7 @@ public:
             sockets[mux]->rx.put(stream.read());
           }
           if (len_orig > sockets[mux]->available()) { // TODO
-            DBG(GSM_NL, "### Fewer characters received than expected: ", sockets[mux]->available(), " vs ", len_orig);
+            DBG("### Fewer characters received than expected: ", sockets[mux]->available(), " vs ", len_orig);
           }
           data = "";
         } else if (data.endsWith(GF("+TCPCLOSED:"))) {

src/TinyGsmClientESP8266.h

@@ -12,7 +12,7 @@
 //#define TINY_GSM_DEBUG Serial
 
 #if !defined(TINY_GSM_RX_BUFFER)
-  #define TINY_GSM_RX_BUFFER 256
+  #define TINY_GSM_RX_BUFFER 512
 #endif
 
 #define TINY_GSM_MUX_COUNT 5
@@ -108,7 +108,7 @@ public:
         continue;
       }
       // TODO: Read directly into user buffer?
-      if (!rx.size()) {
+      if (!rx.size() && sock_connected) {
         at->maintain();
         //break;
       }
@@ -185,7 +185,7 @@ public:
     if (!testAT()) {
       return false;
     }
-    sendAT(GF("E0"));
+    sendAT(GF("E0"));   // Echo Off
     if (waitResponse() != 1) {
       return false;
     }
@@ -209,9 +209,7 @@ public:
   }
 
   void maintain() {
-    //while (stream.available()) {
       waitResponse(10, NULL, NULL);
-    //}
   }
 
   bool factoryDefault() {
@@ -270,13 +268,25 @@ public:
     streamSkipUntil(',');  // Skip BSSID/MAC address
     streamSkipUntil(',');  // Skip Chanel number
     int res2 = stream.parseInt();  // Read RSSI
-    DBG(res2);
-    waitResponse();
+    waitResponse();  // Returns an OK after the value
     return res2;
   }
 
   bool isNetworkConnected() {
-    return true; // TODO
+    sendAT(GF("+CIPSTATUS"));
+    int res1 = waitResponse(3000, GF("STATUS:"));
+    int res2 = 0;
+    if (res1 == 1) {
+      res2 = waitResponse(GFP(GSM_ERROR), GF("2"), GF("3"), GF("4"), GF("5"));
+    }
+    // <stat> status of ESP8266 station interface
+    // 2 : ESP8266 station connected to an AP and has obtained IP
+    // 3 : ESP8266 station created a TCP or UDP transmission
+    // 4 : the TCP or UDP transmission of ESP8266 station disconnected (but AP is connected)
+    // 5 : ESP8266 station did NOT connect to an AP
+    waitResponse();  // Returns an OK after the status
+    if (res2 == 2 || res2 == 3 || res2 == 4) return true;
+    else return false;
   }
 
   bool waitForNetwork(unsigned long timeout = 60000L) {
@@ -285,14 +295,12 @@ public:
       int res1 = waitResponse(3000, GF("busy p..."), GF("STATUS:"));
       if (res1 == 2) {
         int res2 = waitResponse(GFP(GSM_ERROR), GF("2"), GF("3"), GF("4"), GF("5"));
-        if (res2 == 2 || res2 == 3 || res2 == 4) return true;
+        if (res2 == 2 || res2 == 3 || res2 == 4) {
+            waitResponse();
+            return true;
          }
-      // <stat> status of ESP8266 station interface
-      // 2 : ESP8266 station connected to an AP and has obtained IP
-      // 3 : ESP8266 station created a TCP or UDP transmission
-      // 4 : the TCP or UDP transmission of ESP8266 station disconnected (but AP is connected)
-      // 5 : ESP8266 station did NOT connect to an AP
-      delay(1000);
+        }
+      delay(250);
     }
     return false;
   }
@@ -322,7 +330,9 @@ public:
 
   bool networkDisconnect() {
     sendAT(GF("+CWQAP"));
-    return waitResponse(10000L) == 1;
+    bool retVal = waitResponse(10000L) == 1;
+    waitResponse(GF("WIFI DISCONNECT"));
+    return retVal;
   }
 
   String getLocalIP() {
@@ -332,7 +342,6 @@ public:
       return "";
     }
     String res2 = stream.readStringUntil('"');
-    DBG(res2);
     waitResponse();
     return res2;
   }
@@ -349,11 +358,12 @@ protected:
       waitResponse();
     }
     sendAT(GF("+CIPSTART="), mux, ',', ssl ? GF("\"SSL") : GF("\"TCP"), GF("\",\""), host, GF("\","), port, GF(","), TINY_GSM_TCP_KEEP_ALIVE);
+    // TODO: Check mux
     int rsp = waitResponse(75000L,
                            GFP(GSM_OK),
                            GFP(GSM_ERROR),
-                           GF(GSM_NL "ALREADY CONNECT" GSM_NL));
-    waitResponse(100, GF("1,CONNECT")); // TODO
+                           GF("ALREADY CONNECT"));
+    // if (rsp == 3) waitResponse();  // May return "ERROR" after the "ALREADY CONNECT"
     return (1 == rsp);
   }
 
@@ -364,7 +374,7 @@ protected:
     }
     stream.write((uint8_t*)buff, len);
     stream.flush();
-    if (waitResponse(GF(GSM_NL "SEND OK" GSM_NL)) != 1) {
+    if (waitResponse(10000L, GF(GSM_NL "SEND OK" GSM_NL)) != 1) {
       return -1;
     }
     return len;
@@ -372,9 +382,19 @@ protected:
 
   bool modemGetConnected(uint8_t mux) {
     sendAT(GF("+CIPSTATUS="), mux);
-    int res = waitResponse(GF(",\"CONNECTED\""), GF(",\"CLOSED\""), GF(",\"CLOSING\""), GF(",\"INITIAL\""));
-    waitResponse();
-    return 1 == res;
+    int res1 = waitResponse(3000, GF("STATUS:"));
+    int res2;
+    if (res1 == 1) {
+      res2 = waitResponse(GFP(GSM_ERROR), GF("2"), GF("3"), GF("4"), GF("5"));
+    }
+    // <stat> status of ESP8266 station interface
+    // 2 : ESP8266 station connected to an AP and has obtained IP
+    // 3 : ESP8266 station created a TCP or UDP transmission
+    // 4 : the TCP or UDP transmission of ESP8266 station disconnected (but AP is connected)
+    // 5 : ESP8266 station did NOT connect to an AP
+    waitResponse();  // Returns an OK after the status
+    if (res2 == 2 || res2 == 3 || res2 == 4) return true;
+    else return false;
   }
 
 public:
@@ -458,12 +478,18 @@ public:
             sockets[mux]->rx.put(stream.read());
           }
           if (len_orig > sockets[mux]->available()) { // TODO
-            DBG(GSM_NL, "### Fewer characters received than expected: ", sockets[mux]->available(), " vs ", len_orig);
+            DBG("### Fewer characters received than expected: ", sockets[mux]->available(), " vs ", len_orig);
           }
           data = "";
-          return index;
-        } else if (data.endsWith(GF(GSM_NL "1,CLOSED" GSM_NL))) { //TODO: use mux
-          sockets[1]->sock_connected = false;
+        } else if (data.endsWith(GF("CLOSED"))) {
+          int muxStart = max(0,data.lastIndexOf(GSM_NL, data.length()-8));
+          int coma = data.indexOf(',', muxStart);
+          int mux = data.substring(muxStart, coma).toInt();
+          if (mux >= 0 && mux < TINY_GSM_MUX_COUNT && sockets[mux]) {
+            sockets[mux]->sock_connected = false;
+          }
+          data = "";
+          DBG("### Closed: ", mux);
         }
       }
     } while (millis() - startMillis < timeout);

src/TinyGsmClientM590.h

@@ -123,7 +123,7 @@ public:
         continue;
       }
       // TODO: Read directly into user buffer?
-      if (!rx.size()) {
+      if (!rx.size() && sock_connected) {
         at->maintain();
         //break;
       }
@@ -367,7 +367,7 @@ public:
       if (isNetworkConnected()) {
         return true;
       }
-      delay(500);
+      delay(250);
     }
     return false;
   }
@@ -655,7 +655,7 @@ public:
             sockets[mux]->rx.put(stream.read());
           }
           if (len_orig > sockets[mux]->available()) { // TODO
-            DBG(GSM_NL, "### Fewer characters received than expected: ", sockets[mux]->available(), " vs ", len_orig);
+            DBG("### Fewer characters received than expected: ", sockets[mux]->available(), " vs ", len_orig);
           }
           data = "";
         } else if (data.endsWith(GF("+TCPCLOSE:"))) {

src/TinyGsmClientSIM800.h

@@ -126,7 +126,7 @@ public:
     TINY_GSM_YIELD();
     at->maintain();
     size_t cnt = 0;
-    while (cnt < size) {
+    while (cnt < size && sock_connected) {
       size_t chunk = TinyGsmMin(size-cnt, rx.size());
       if (chunk > 0) {
         rx.get(buf, chunk);
@@ -432,7 +432,7 @@ public:
       if (isNetworkConnected()) {
         return true;
       }
-      delay(500);
+      delay(250);
     }
     return false;
   }
@@ -443,71 +443,82 @@ public:
   bool gprsConnect(const char* apn, const char* user, const char* pwd) {
     gprsDisconnect();
 
-    sendAT(GF("+SAPBR=3,1,\"Contype\",\"GPRS\""));
+    // Set the Bearer for the IP
+    sendAT(GF("+SAPBR=3,1,\"Contype\",\"GPRS\""));  // Set the connection type to GPRS
     waitResponse();
 
-    sendAT(GF("+SAPBR=3,1,\"APN\",\""), apn, '"');
+    sendAT(GF("+SAPBR=3,1,\"APN\",\""), apn, '"');  // Set the APN
     waitResponse();
 
     if (user && strlen(user) > 0) {
-      sendAT(GF("+SAPBR=3,1,\"USER\",\""), user, '"');
+      sendAT(GF("+SAPBR=3,1,\"USER\",\""), user, '"');  // Set the user name
       waitResponse();
     }
     if (pwd && strlen(pwd) > 0) {
-      sendAT(GF("+SAPBR=3,1,\"PWD\",\""), pwd, '"');
+      sendAT(GF("+SAPBR=3,1,\"PWD\",\""), pwd, '"');  // Set the password
       waitResponse();
     }
 
+    // Define the PDP context
     sendAT(GF("+CGDCONT=1,\"IP\",\""), apn, '"');
     waitResponse();
 
+    // Activate the PDP context
     sendAT(GF("+CGACT=1,1"));
     waitResponse(60000L);
 
-    // Open a GPRS context
+    // Open the definied GPRS bearer context
     sendAT(GF("+SAPBR=1,1"));
     waitResponse(85000L);
-    // Query the GPRS context
+    // Query the GPRS bearer context status
     sendAT(GF("+SAPBR=2,1"));
     if (waitResponse(30000L) != 1)
       return false;
 
+    // Attach to GPRS
     sendAT(GF("+CGATT=1"));
     if (waitResponse(60000L) != 1)
       return false;
 
     // TODO: wait AT+CGATT?
 
+    // Set to multi-IP
     sendAT(GF("+CIPMUX=1"));
     if (waitResponse() != 1) {
       return false;
     }
 
+    // Put in "quick send" mode (thus no extra "Send OK")
     sendAT(GF("+CIPQSEND=1"));
     if (waitResponse() != 1) {
       return false;
     }
 
+    // Set to get data manually
     sendAT(GF("+CIPRXGET=1"));
     if (waitResponse() != 1) {
       return false;
     }
 
+    // Start Task and Set APN, USER NAME, PASSWORD
     sendAT(GF("+CSTT=\""), apn, GF("\",\""), user, GF("\",\""), pwd, GF("\""));
     if (waitResponse(60000L) != 1) {
       return false;
     }
 
+    // Bring Up Wireless Connection with GPRS or CSD
     sendAT(GF("+CIICR"));
     if (waitResponse(60000L) != 1) {
       return false;
     }
 
+    // Get Local IP Address, only assigned after connection
     sendAT(GF("+CIFSR;E0"));
     if (waitResponse(10000L) != 1) {
       return false;
     }
 
+    // Configure Domain Name Server (DNS)
     sendAT(GF("+CDNSCFG=\"8.8.8.8\",\"8.8.4.4\""));
     if (waitResponse() != 1) {
       return false;
@@ -517,11 +528,11 @@ public:
   }
 
   bool gprsDisconnect() {
-    sendAT(GF("+CIPSHUT"));
+    sendAT(GF("+CIPSHUT"));  // Shut the TCP/IP connection
     if (waitResponse(60000L) != 1)
       return false;
 
-    sendAT(GF("+CGATT=0"));
+    sendAT(GF("+CGATT=0"));  // Deactivate the bearer context
     if (waitResponse(60000L) != 1)
       return false;
 

src/TinyGsmClientU201.h

@@ -372,7 +372,7 @@ public:
       if (isNetworkConnected()) {
         return true;
       }
-      delay(500);
+      delay(250);
     }
     return false;
   }

src/TinyGsmClientXBee.h

@@ -74,7 +74,7 @@ public:
   virtual int connect(const char *host, uint16_t port) {
     at->streamClear();  // Empty anything remaining in the buffer;
     at->commandMode();
-    sock_connected = at->modemConnect(host, port, mux);
+    sock_connected = at->modemConnect(host, port, mux, false);
     at->writeChanges();
     at->exitCommand();
     return sock_connected;
@@ -83,7 +83,7 @@ public:
   virtual int connect(IPAddress ip, uint16_t port) {
     at->streamClear();  // Empty anything remaining in the buffer;
     at->commandMode();
-    sock_connected = at->modemConnect(ip, port, mux);
+    sock_connected = at->modemConnect(ip, port, mux, false);
     at->writeChanges();
     at->exitCommand();
     return sock_connected;
@@ -92,13 +92,13 @@ public:
   // This is a hack to shut the socket by setting the timeout to zero and
   //  then sending an empty line to the server.
   virtual void stop() {
+    at->streamClear();  // Empty anything remaining in the buffer;
     at->commandMode();
     at->sendAT(GF("TM0"));  // Set socket timeout to 0;
     at->waitResponse();
     at->writeChanges();
     at->exitCommand();
     at->modemSend("", 1, mux);
-    at->streamClear();  // Empty anything remaining in the buffer;
     at->commandMode();
     at->sendAT(GF("TM64"));  // Set socket timeout back to 10seconds;
     at->waitResponse();
@@ -124,7 +124,8 @@ public:
   }
 
   virtual int read(uint8_t *buf, size_t size) {
-    return available();
+    TINY_GSM_YIELD();
+    return at->stream.readBytes(buf, size);
   }
 
   virtual int read() {
@@ -155,6 +156,35 @@ private:
   bool          sock_connected;
 };
 
+class GsmClientSecure : public GsmClient
+{
+public:
+  GsmClientSecure() {}
+
+  GsmClientSecure(TinyGsm& modem, uint8_t mux = 1)
+    : GsmClient(modem, mux)
+  {}
+
+public:
+  virtual int connect(const char *host, uint16_t port) {
+    at->streamClear();  // Empty anything remaining in the buffer;
+    at->commandMode();
+    sock_connected = at->modemConnect(host, port, mux, true);
+    at->writeChanges();
+    at->exitCommand();
+    return sock_connected;
+  }
+
+  virtual int connect(IPAddress ip, uint16_t port) {
+    at->streamClear();  // Empty anything remaining in the buffer;
+    at->commandMode();
+    sock_connected = at->modemConnect(ip, port, mux, true);
+    at->writeChanges();
+    at->exitCommand();
+    return sock_connected;
+  }
+};
+
 public:
 
   TinyGsm(Stream& stream)
@@ -190,7 +220,18 @@ public:
     return true;
   }
 
-  bool testAT(unsigned long timeout = 10000L) {  // not supported
+  bool testAT(unsigned long timeout = 10000L) {
+    for (unsigned long start = millis(); millis() - start < timeout; ) {
+      if (commandMode())
+      {
+          sendAT();
+          if (waitResponse(200) == 1) {
+              return true;
+          }
+          exitCommand();
+      }
+      delay(100);
+    }
     return false;
   }
 
@@ -205,6 +246,11 @@ public:
     return ret_val;
   }
 
+  bool hasSSL() {
+    if (beeType == S6B) return false;
+    else return true;
+  }
+
   /*
    * Power functions
    */
@@ -230,8 +276,10 @@ public:
     commandMode();
     sendAT(GF("SM"),1);
     waitResponse();
+    if (beeType == S6B) {
         sendAT(GF("SO"),200);
         waitResponse();
+    }
     writeChanges();
     exitCommand();
   }
@@ -272,8 +320,7 @@ public:
 
   RegStatus getRegistrationStatus() {
     commandMode();
-    if (beeType == S6B) sendAT(GF("AI"));
-    else sendAT(GF("CI"));
+    sendAT(GF("AI"));
     // wait for the response
     unsigned long startMillis = millis();
     while (!stream.available() && millis() - startMillis < 1000) {};
@@ -290,7 +337,7 @@ public:
             res == GF("40") || res == GF("41") || res == GF("42"))
       return REG_SEARCHING;
 
-    else if(res == GF("24"))
+    else if(res == GF("24") || res == GF("25") || res == GF("27"))
       return REG_DENIED;
 
     else return REG_UNKNOWN;
@@ -314,34 +361,31 @@ public:
   int getSignalQuality() {
     commandMode();
     if (beeType == S6B) sendAT(GF("LM"));  // ask for the "link margin" - the dB above sensitivity
-    else sendAT(GF("DB"));  // ask for the cell strenght in dBm
+    else sendAT(GF("DB"));  // ask for the cell strength in dBm
     // wait for the response
     unsigned long startMillis = millis();
     while (!stream.available() && millis() - startMillis < 1000) {};
     char buf[2] = {0};  // Set up buffer for response
     buf[0] = streamRead();
     buf[1] = streamRead();
-    DBG(buf[0], buf[1], "\n");
+    // DBG(buf[0], buf[1], "\n");
     exitCommand();
     int intr = strtol(buf, 0, 16);
     if (beeType == S6B) return -93 + intr;  // the maximum sensitivity is -93dBm
     else return -1*intr; // need to convert to negative number
   }
 
+  bool isNetworkConnected() {
+    RegStatus s = getRegistrationStatus();
+    return (s == REG_OK_HOME || s == REG_OK_ROAMING);
+  }
+
   bool waitForNetwork(unsigned long timeout = 60000L) {
     for (unsigned long start = millis(); millis() - start < timeout; ) {
-      commandMode();
-      if (beeType == S6B) sendAT(GF("AI"));
-      else sendAT(GF("CI"));
-      // wait for the response
-      unsigned long startMillis = millis();
-      while (!stream.available() && millis() - startMillis < 1000) {};
-      String res = streamReadUntil('\r');  // Does not send an OK, just the result
-      exitCommand();
-      if (res == GF("0")) {
+      if (isNetworkConnected()) {
         return true;
       }
-      delay(1000);
+      delay(250);
     }
     return false;
   }
@@ -439,7 +483,7 @@ fail:
 
 private:
 
-  int modemConnect(const char* host, uint16_t port, uint8_t mux = 0) {
+  int modemConnect(const char* host, uint16_t port, uint8_t mux = 0, bool ssl = false) {
     sendAT(GF("LA"), host);
     String strIP; strIP.reserve(16);
     // wait for the response
@@ -447,10 +491,10 @@ private:
     while (stream.available() < 8 && millis() - startMillis < 30000) {};
     strIP = streamReadUntil('\r');  // read result
     IPAddress ip = TinyGsmIpFromString(strIP);
-    return modemConnect(ip, port);
+    return modemConnect(ip, port, mux, ssl);
   }
 
-  int modemConnect(IPAddress ip, uint16_t port, uint8_t mux = 0) {
+  int modemConnect(IPAddress ip, uint16_t port, uint8_t mux = 0, bool ssl = false) {
     String host; host.reserve(16);
     host += ip[0];
     host += ".";
@@ -459,8 +503,13 @@ private:
     host += ip[2];
     host += ".";
     host += ip[3];
+    if (ssl) {
+      sendAT(GF("IP"), 4);  // Put in TCP mode
+      waitResponse();
+    } else {
       sendAT(GF("IP"), 1);  // Put in TCP mode
       waitResponse();
+    }
     sendAT(GF("DL"), host);  // Set the "Destination Address Low"
     waitResponse();
     sendAT(GF("DE"), String(port, HEX));  // Set the destination port
@@ -476,8 +525,7 @@ private:
 
   bool modemGetConnected(uint8_t mux = 0) {
     commandMode();
-    if (beeType == S6B) sendAT(GF("AI"));
-    else sendAT(GF("CI"));
+    sendAT(GF("AI"));
     int res = waitResponse(GF("0"));
     exitCommand();
     return 1 == res;
@@ -504,9 +552,7 @@ public:
     TINY_GSM_YIELD();
     String return_string = stream.readStringUntil(c);
     return_string.trim();
-    if (String(c) == GSM_NL) {
-      DBG(return_string, "\r\n");
-    } else DBG(return_string, c);
+    // DBG(return_string, c);
     return return_string;
   }
 
@@ -517,7 +563,7 @@ public:
   bool commandMode(void) {
     delay(guardTime);  // cannot send anything for 1 second before entering command mode
     streamWrite(GF("+++"));  // enter command mode
-    DBG("\r\n+++\r\n");
+    // DBG("\r\n+++\r\n");
     return 1 == waitResponse(guardTime*2);
   }
 
@@ -594,7 +640,7 @@ finish:
       data.replace(GSM_NL GSM_NL, GSM_NL);
       data.replace(GSM_NL, "\r\n    ");
       if (data.length()) {
-        DBG("<<< ", data, "\r\n");
+        // DBG("<<< ", data);
       }
     }
     return index;

tools/AT_Spy/AT_Spy.ino

@@ -0,0 +1,45 @@
+/**************************************************************
+ *
+ * This script just listens in on the communication between an Arduino and the
+ * modem.
+ *
+ * TinyGSM Getting Started guide:
+ *   http://tiny.cc/tiny-gsm-readme
+ *
+ **************************************************************/
+
+// Set the baud rate between the modem and the board
+#define BAUD_RATE 9600
+
+// Set serial printing out the communication
+#define SPY Serial
+
+// Set serial for input from modem
+#define MODEM_TX Serial1
+
+// Set serial for AT commands (to the module)
+// Use Hardware Serial on Mega, Leonardo, Micro
+// #define BOARD_TX Serial1
+
+// or AltSoftware
+#include <AltSoftSerial.h>
+AltSoftSerial BOARD_TX;
+
+
+void setup() {
+  // Set console baud rate
+  SPY.begin(57600);
+  MODEM_TX.begin(BAUD_RATE);
+  BOARD_TX.begin(BAUD_RATE);
+  delay(5000);
+}
+
+void loop()
+{
+    while (MODEM_TX.available()) {
+      SPY.write(MODEM_TX.read());
+    }
+    while (BOARD_TX.available()) {
+      SPY.write(BOARD_TX.read());
+    }
+}