Fixed XBee mux array compiler warning, updated readme

README.md

@@ -10,8 +10,8 @@ A small Arduino library for GSM modules, that just works.
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-If you like **TinyGSM** - give it a star, or fork it and contribute! 
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+If you like **TinyGSM** - give it a star, or fork it and contribute!
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@@ -35,29 +35,29 @@ TinyGSM also pulls data gently from the modem (whenever possible), so it can ope
 
 ## Features
 
-Feature \ Modem              | SIM800 | SIM8x8 | A6/A7/A20 | M590 | ESP8266
----                          | ---    | ---    | ---       | ---  | ---
+Feature \ Modem              | SIM800 | SIM8x8 | A6/A7/A20 | M590 | ESP8266 | XBee
+---                          | ---    | ---    | ---       | ---  | ---     |
 **Data connections**
-TCP (HTTP, MQTT, Blynk, ...) | ✔      | ✔      | ✔         | ✔    | ✔
-UDP                          |        |        |           |      | 
-SSL/TLS (HTTPS)              | ✔¹     | ✔¹     | 🅧        | 🅧   | ◌
+TCP (HTTP, MQTT, Blynk, ...) | ✔      | ✔      | ✔         | ✔    | ✔       | ✔
+UDP                          |        |        |           |      |         | ◌
+SSL/TLS (HTTPS)              | ✔¹     | ✔¹     | 🅧        | 🅧   | ◌       |
 **USSD**
-Sending USSD requests        | ✔      | ✔      | ✔         | ✔    | 
-Decoding 7,8,16-bit response | ✔      | ✔      | ✔         | ✔    | 
+Sending USSD requests        | ✔      | ✔      | ✔         | ✔    |         |
+Decoding 7,8,16-bit response | ✔      | ✔      | ✔         | ✔    |         |
 **SMS**
-Sending                      | ✔      | ✔      | ✔         | ✔    | 
-Sending Unicode              | ✔      | ✔      | ◌         | 🅧   | 
-Reading                      |        |        |           |      | 
-Incoming message event       |        |        |           | ?    | 
+Sending                      | ✔      | ✔      | ✔         | ✔    |         | ✔
+Sending Unicode              | ✔      | ✔      | ◌         | 🅧   |         |
+Reading                      |        |        |           |      |         |
+Incoming message event       |        |        |           | ?    |         |
 **Calls**
-Dial, hangup                 | ✔      | ✔      | ✔         | 🅧   | 
-Receiving calls              | ✔      | ✔      | ✔         | 🅧   | 
-Incoming event (RING)        | ◌      | ◌      | ◌         | 🅧   | 
-DTMF sending                 | ◌      | ◌      | ◌         | 🅧   | 
-DTMF decoding                | ◌      | ◌      | 🅧        | 🅧   | 
+Dial, hangup                 | ✔      | ✔      | ✔         | 🅧   |         | 🅧
+Receiving calls              | ✔      | ✔      | ✔         | 🅧   |         | 🅧
+Incoming event (RING)        | ◌      | ◌      | ◌         | 🅧   |         | 🅧
+DTMF sending                 | ◌      | ◌      | ◌         | 🅧   |         | 🅧
+DTMF decoding                | ◌      | ◌      | 🅧        | 🅧   |         | 🅧
 **Location**
-GSM location service         | ✔      | ✔      | 🅧        | 🅧   | 
-GPS/GNSS                     | 🅧     | ✔²     | ◌¹        | 🅧   | 
+GSM location service         | ✔      | ✔      | 🅧        | 🅧   |         | 🅧
+GPS/GNSS                     | 🅧     | ✔²     | ◌¹        | 🅧   |         | 🅧
 
 ✔ - implemented  ◌ - planned  🅧 - not available for this modem  
 ¹ - only some device models or firmware revisions have this feature  
@@ -70,6 +70,7 @@ GPS/GNSS                     | 🅧     | ✔²     | ◌¹        | 🅧   |
 - [x] AI-Thinker A6, A6C, A7
 - [x] Neoway M590
 - [x] ESP8266 (AT commands interface, similar to GSM modems)
+- [x] Digi XBee WiFi and Cellular (using XBee command mode)
 
 ### Supported modules
 - [x] GPRSbee

TinyGsmClientXBee.h

@@ -15,6 +15,8 @@
   #define TINY_GSM_RX_BUFFER 256
 #endif
 
+#define TINY_GSM_MUX_COUNT 1  // Multi-plexing isn't supported using command mode
+
 #include <TinyGsmCommon.h>
 
 #define GSM_NL "\r"
@@ -59,11 +61,11 @@ class GsmClient : public Client
 public:
   GsmClient() {}
 
-  GsmClient(TinyGsm& modem, uint8_t mux = 1) {
+  GsmClient(TinyGsm& modem, uint8_t mux = 0) {
     init(&modem, mux);
   }
 
-  bool init(TinyGsm* modem, uint8_t mux = 1) {
+  bool init(TinyGsm* modem, uint8_t mux = 0) {
     this->at = modem;
     this->mux = mux;
     sock_connected = false;
@@ -438,7 +440,7 @@ public:
 
 
 private:
-  int modemConnect(const char* host, uint16_t port, uint8_t mux = 1) {
+  int modemConnect(const char* host, uint16_t port, uint8_t mux = 0) {
     sendAT(GF("LA"), host);
     String strIP; strIP.reserve(16);
     // wait for the response
@@ -460,7 +462,7 @@ private:
     return modemConnect(res, port);
   }
 
-  int modemConnect(IPAddress ip, uint16_t port, uint8_t mux = 1) {
+  int modemConnect(IPAddress ip, uint16_t port, uint8_t mux = 0) {
     String host; host.reserve(16);
     host += ip[0];
     host += ".";
@@ -478,13 +480,13 @@ private:
     return rsp;
   }
 
-  int modemSend(const void* buff, size_t len, uint8_t mux = 1) {
+  int modemSend(const void* buff, size_t len, uint8_t mux = 0) {
     stream.write((uint8_t*)buff, len);
     stream.flush();
     return len;
   }
 
-  bool modemGetConnected(uint8_t mux = 1) {
+  bool modemGetConnected(uint8_t mux = 0) {
     commandMode();
     if (beeType == S6B) sendAT(GF("AI"));
     else sendAT(GF("CI"));
@@ -625,9 +627,7 @@ private:
   int           guardTime;
   XBeeType      beeType;
   Stream&       stream;
-  GsmClient*    sockets[1];
+  GsmClient*    sockets[TINY_GSM_MUX_COUNT];
 };
 
-typedef TinyGsm::GsmClient TinyGsmClient;
-
 #endif