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TinyGSM/src/TinyGsmClientXBee.h

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/**
* @file TinyGsmClientXBee.h
* @author Volodymyr Shymanskyy
* @license LGPL-3.0
* @copyright Copyright (c) 2016 Volodymyr Shymanskyy, XBee module by Sara Damiano
* @date Nov 2016
*/
#ifndef TinyGsmClientXBee_h
#define TinyGsmClientXBee_h
//#pragma message("TinyGSM: TinyGsmClientXBee")
//#define TINY_GSM_DEBUG Serial
// XBee's do not support multi-plexing in transparent/command mode
// The much more complicated API mode is needed for multi-plexing
#define TINY_GSM_MUX_COUNT 1
// XBee's have a default guard time of 1 second (1000ms, 10 extra for safety here)
#define TINY_GSM_XBEE_GUARD_TIME 1010
#include <TinyGsmCommon.h>
#define GSM_NL "\r"
static const char GSM_OK[] TINY_GSM_PROGMEM = "OK" GSM_NL;
static const char GSM_ERROR[] TINY_GSM_PROGMEM = "ERROR" GSM_NL;
enum SimStatus {
SIM_ERROR = 0,
SIM_READY = 1,
SIM_LOCKED = 2,
};
enum RegStatus {
REG_OK = 0,
REG_UNREGISTERED = 1,
REG_SEARCHING = 2,
REG_DENIED = 3,
REG_UNKNOWN = 4,
};
// These are responses to the HS command to get "hardware series"
enum XBeeType {
XBEE_UNKNOWN = 0,
XBEE_S6B_WIFI = 0x601, // Digi XBee® Wi-Fi
XBEE_LTE1_VZN = 0xB01, // Digi XBee® Cellular LTE Cat 1
XBEE_3G = 0xB02, // Digi XBee® Cellular 3G
XBEE3_LTE1_ATT = 0xB06, // Digi XBee3™ Cellular LTE CAT 1
XBEE3_LTEM_ATT = 0xB08, // Digi XBee3™ Cellular LTE-M
XBEE3_LTENB = 3, // Digi XBee3™ Cellular NB-IoT -- HS unknown to SRGD
};
class TinyGsmXBee : public TinyGsmModem
{
public:
class GsmClient : public Client
{
friend class TinyGsmXBee;
// typedef TinyGsmFifo<uint8_t, TINY_GSM_RX_BUFFER> RxFifo;
public:
GsmClient() {}
GsmClient(TinyGsmXBee& modem, uint8_t mux = 0) {
init(&modem, mux);
}
bool init(TinyGsmXBee* modem, uint8_t mux = 0) {
this->at = modem;
this->mux = mux;
sock_connected = false;
at->sockets[mux] = this;
return true;
}
public:
// NOTE: The XBee saves all paramter information in flash. When you turn it
// on it immediately begins to re-connect to whatever was last connected to.
// All the modemConnect() function does is tell it the paramters to put into
// flash. The connection itself happens automatically after that.
// Because everything is saved, it is possible (or likely) that you will be
// connected even if you haven't "made" any connection
virtual int connect(const char *host, uint16_t port) {
at->streamClear(); // Empty anything in the buffer before starting
if (at->commandMode()) { // Don't try if we didn't successfully get into command mode
sock_connected = at->modemConnect(host, port, mux, false);
at->writeChanges();
at->exitCommand();
}
// After setting connection information, check if we're actually connected
sock_connected = at->modemGetConnected();
return sock_connected;
}
virtual int connect(IPAddress ip, uint16_t port) {
at->streamClear(); // Empty anything in the buffer before starting
if (at->commandMode()) { // Don't try if we didn't successfully get into command mode
sock_connected = at->modemConnect(ip, port, mux, false);
at->writeChanges();
at->exitCommand();
}
// After setting connection information, check if we're actually connected
sock_connected = at->modemGetConnected();
return sock_connected;
}
// 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 in the buffer
at->commandMode();
at->sendAT(GF("TM0")); // Set socket timeout to 0;
// Per documentation: If you change the TM value while in Transparent Mode,
// the current connection is immediately closed.
// NOTE: Above applies to all cellular models, uncertain if it applies
// to the WiFi models.
at->waitResponse();
at->writeChanges();
at->sendAT(GF("TM64")); // Set socket timeout back to 10 seconds;
at->waitResponse();
at->writeChanges();
at->exitCommand();
at->streamClear(); // Empty anything remaining in the buffer
// sock_connected = false;
// Note: because settings are saved in flash, the XBEE may immediately attempt to reconnect
}
virtual size_t write(const uint8_t *buf, size_t size) {
TINY_GSM_YIELD();
return at->modemSend(buf, size, mux);
}
virtual size_t write(uint8_t c) {
return write(&c, 1);
}
virtual size_t write(const char *str) {
if (str == NULL) return 0;
return write((const uint8_t *)str, strlen(str));
}
virtual int available() {
TINY_GSM_YIELD();
return at->stream.available();
/*
if (!rx.size() || at->stream.available()) {
at->maintain();
}
return at->stream.available() + rx.size();
*/
}
virtual int read(uint8_t *buf, size_t size) {
TINY_GSM_YIELD();
return at->stream.readBytes((char *)buf, size);
/*
size_t cnt = 0;
uint32_t _startMillis = millis();
while (cnt < size && millis() - _startMillis < _timeout) {
size_t chunk = TinyGsmMin(size-cnt, rx.size());
if (chunk > 0) {
rx.get(buf, chunk);
buf += chunk;
cnt += chunk;
continue;
}
// TODO: Read directly into user buffer?
if (!rx.size() || at->stream.available()) {
at->maintain();
}
}
return cnt;
*/
}
virtual int read() {
TINY_GSM_YIELD();
return at->stream.read();
/*
uint8_t c;
if (read(&c, 1) == 1) {
return c;
}
return -1;
*/
}
virtual int peek() { return at->stream.peek(); }
virtual void flush() { at->stream.flush(); }
virtual uint8_t connected() {
if (available()) {
return true;
}
sock_connected = at->modemGetConnected();
return sock_connected;
}
virtual operator bool() { return connected(); }
/*
* Extended API
*/
String remoteIP() TINY_GSM_ATTR_NOT_IMPLEMENTED;
private:
TinyGsmXBee* at;
uint8_t mux;
bool sock_connected;
// RxFifo rx;
};
class GsmClientSecure : public GsmClient
{
public:
GsmClientSecure() {}
GsmClientSecure(TinyGsmXBee& modem, uint8_t mux = 0)
: GsmClient(modem, mux)
{}
public:
virtual int connect(const char *host, uint16_t port) {
at->streamClear(); // Empty anything in the buffer before starting
if (at->commandMode()) { // Don't try if we didn't successfully get into command mode
sock_connected = at->modemConnect(host, port, mux, true);
at->writeChanges();
at->exitCommand();
}
// After setting connection information, check if we're actually connected
sock_connected = at->modemGetConnected();
return sock_connected;
}
virtual int connect(IPAddress ip, uint16_t port) {
at->streamClear(); // Empty anything in the buffer before starting
if (at->commandMode()) { // Don't try if we didn't successfully get into command mode
sock_connected = at->modemConnect(ip, port, mux, true);
at->writeChanges();
at->exitCommand();
}
// After setting connection information, check if we're actually connected
sock_connected = at->modemGetConnected();
return sock_connected;
}
};
public:
TinyGsmXBee(Stream& stream)
: TinyGsmModem(stream), stream(stream)
{
beeType = XBEE_UNKNOWN; // Start not knowing what kind of bee it is
guardTime = TINY_GSM_XBEE_GUARD_TIME; // Start with the default guard time of 1 second
resetPin = -1;
ipAddr = IPAddress(0,0,0,0);
host = "";
memset(sockets, 0, sizeof(sockets));
}
TinyGsmXBee(Stream& stream, int8_t resetPin)
: TinyGsmModem(stream), stream(stream)
{
beeType = XBEE_UNKNOWN; // Start not knowing what kind of bee it is
guardTime = TINY_GSM_XBEE_GUARD_TIME; // Start with the default guard time of 1 second
this->resetPin = resetPin;
ipAddr = IPAddress(0,0,0,0);
host = "";
memset(sockets, 0, sizeof(sockets));
}
/*
* Basic functions
*/
bool init(const char* pin = NULL) {
if (resetPin >= 0) {
pinMode(resetPin, OUTPUT);
digitalWrite(resetPin, HIGH);
}
if (!commandMode(10)) return false; // Try up to 10 times for the init
sendAT(GF("AP0")); // Put in transparent mode
bool ret_val = waitResponse() == 1;
ret_val &= writeChanges();
sendAT(GF("GT64")); // shorten the guard time to 100ms
ret_val &= waitResponse();
ret_val &= writeChanges();
if (ret_val) guardTime = 110;
getSeries(); // Get the "Hardware Series";
exitCommand();
return ret_val;
}
String getModemName() {
return getBeeName();
}
void setBaud(unsigned long baud) {
if (!commandMode()) return;
switch(baud)
{
case 2400: sendAT(GF("BD1")); break;
case 4800: sendAT(GF("BD2")); break;
case 9600: sendAT(GF("BD3")); break;
case 19200: sendAT(GF("BD4")); break;
case 38400: sendAT(GF("BD5")); break;
case 57600: sendAT(GF("BD6")); break;
case 115200: sendAT(GF("BD7")); break;
case 230400: sendAT(GF("BD8")); break;
case 460800: sendAT(GF("BD9")); break;
case 921600: sendAT(GF("BDA")); break;
default: {
DBG(GF("Specified baud rate is unsupported! Setting to 9600 baud."));
sendAT(GF("BD3")); // Set to default of 9600
break;
}
}
waitResponse();
writeChanges();
exitCommand();
}
bool testAT(unsigned long timeout = 10000L) {
for (unsigned long start = millis(); millis() - start < timeout; ) {
if (commandMode())
{
sendAT();
if (waitResponse(200) == 1) {
exitCommand();
return true;
}
}
delay(100);
}
return false;
}
void maintain() {
// this only happens OUTSIDE command mode, so if we're getting characters
// they should be data received from the TCP connection
// TINY_GSM_YIELD();
// while (stream.available()) {
// char c = stream.read();
// if (c > 0) sockets[0]->rx.put(c);
// }
}
bool factoryDefault() {
if (!commandMode()) return false; // Return immediately
sendAT(GF("RE"));
bool ret_val = waitResponse() == 1;
ret_val &= writeChanges();
exitCommand();
// Make sure the guard time for the modem object is set back to default
// otherwise communication would fail after the reset
guardTime = 1010;
return ret_val;
}
String getModemInfo() {
String modemInf = "";
if (!commandMode()) return modemInf; // Try up to 10 times for the init
sendAT(GF("HS")); // Get the "Hardware Series"
modemInf += readResponseString();
exitCommand();
return modemInf;
}
bool hasSSL() {
if (beeType == XBEE_S6B_WIFI) return false;
else return true;
}
bool hasWifi() {
if (beeType == XBEE_S6B_WIFI) return true;
else return false;
}
bool hasGPRS() {
if (beeType == XBEE_S6B_WIFI) return false;
else return true;
}
XBeeType getBeeType() {
return beeType;
}
String getBeeName() {
switch (beeType){
case XBEE_S6B_WIFI: return "Digi XBee® Wi-Fi";
case XBEE_LTE1_VZN: return "Digi XBee® Cellular LTE Cat 1";
case XBEE_3G: return "Digi XBee® Cellular 3G";
case XBEE3_LTE1_ATT: return "Digi XBee3™ Cellular LTE CAT 1";
case XBEE3_LTEM_ATT: return "Digi XBee3™ Cellular LTE-M";
case XBEE3_LTENB: return "Digi XBee3™ Cellular NB-IoT";
default: return "Digi XBee®";
}
}
/*
* Power functions
*/
// The XBee's have a bad habit of getting into an unresponsive funk
// This uses the board's hardware reset pin to force it to reset
void pinReset() {
if (resetPin >= 0) {
digitalWrite(resetPin, LOW);
delay(1);
digitalWrite(resetPin, HIGH);
}
}
bool restart() {
if (!commandMode()) return false; // Return immediately
if (beeType == XBEE_UNKNOWN) getSeries(); // how we restart depends on this
if (beeType != XBEE_S6B_WIFI) {
sendAT(GF("AM1")); // Digi suggests putting cellular modules into airplane mode before restarting
// This allows the sockets and connections to close cleanly
if (waitResponse() != 1) return exitAndFail();
if (!writeChanges()) return exitAndFail();
}
sendAT(GF("FR"));
if (waitResponse() != 1) return exitAndFail();
if (beeType == XBEE_S6B_WIFI) delay(2000); // Wifi module actually resets about 2 seconds later
else delay(100); // cellular modules wait 100ms before reset happes
// Wait until reboot complete and responds to command mode call again
for (unsigned long start = millis(); millis() - start < 60000L; ) {
if (commandMode(1)) break;
delay(250); // wait a litle before trying again
}
if (beeType != XBEE_S6B_WIFI) {
sendAT(GF("AM0")); // Turn off airplane mode
if (waitResponse() != 1) return exitAndFail();
if (!writeChanges()) return exitAndFail();
}
exitCommand();
return true;
}
void setupPinSleep(bool maintainAssociation = false) {
if (!commandMode()) return; // Return immediately
if (beeType == XBEE_UNKNOWN) getSeries(); // Command depends on series
sendAT(GF("SM"),1); // Pin sleep
waitResponse();
if (beeType == XBEE_S6B_WIFI && !maintainAssociation) {
sendAT(GF("SO"),200); // For lowest power, dissassociated deep sleep
waitResponse();
}
else if (!maintainAssociation){
sendAT(GF("SO"),1); // For supported cellular modules, maintain association
// Not supported by all modules, will return "ERROR"
waitResponse();
}
writeChanges();
exitCommand();
}
bool poweroff() { // Not supported
return false;
}
bool radioOff() TINY_GSM_ATTR_NOT_IMPLEMENTED;
bool sleepEnable(bool enable = true) TINY_GSM_ATTR_NOT_IMPLEMENTED;
/*
* SIM card functions
*/
bool simUnlock(const char *pin) { // Not supported
return false;
}
String getSimCCID() {
if (!commandMode()) return ""; // Return immediately
sendAT(GF("S#"));
String res = readResponseString();
exitCommand();
return res;
}
String getIMEI() {
if (!commandMode()) return ""; // Return immediately
sendAT(GF("IM"));
String res = readResponseString();
exitCommand();
return res;
}
SimStatus getSimStatus(unsigned long timeout = 10000L) {
return SIM_READY; // unsupported
}
RegStatus getRegistrationStatus() {
if (!commandMode()) return REG_UNKNOWN; // Return immediately
if (beeType == XBEE_UNKNOWN) getSeries(); // Need to know the bee type to interpret response
sendAT(GF("AI"));
int16_t intRes = readResponseInt();
RegStatus stat = REG_UNKNOWN;
switch (beeType){
case XBEE_S6B_WIFI: {
if(intRes == 0x00) // 0x00 Successfully joined an access point, established IP addresses and IP listening sockets
stat = REG_OK;
else if(intRes == 0x01) // 0x01 Wi-Fi transceiver initialization in progress.
stat = REG_SEARCHING;
else if(intRes == 0x02) // 0x02 Wi-Fi transceiver initialized, but not yet scanning for access point.
stat = REG_SEARCHING;
else if(intRes == 0x13) { // 0x13 Disconnecting from access point.
restart(); // Restart the device; the S6B tends to get stuck "disconnecting"
stat = REG_UNREGISTERED;
}
else if(intRes == 0x23) // 0x23 SSID not configured.
stat = REG_UNREGISTERED;
else if(intRes == 0x24) // 0x24 Encryption key invalid (either NULL or invalid length for WEP).
stat = REG_DENIED;
else if(intRes == 0x27) // 0x27 SSID was found, but join failed.
stat = REG_DENIED;
else if(intRes == 0x40) // 0x40 Waiting for WPA or WPA2 Authentication.
stat = REG_SEARCHING;
else if(intRes == 0x41) // 0x41 Device joined a network and is waiting for IP configuration to complete
stat = REG_SEARCHING;
else if(intRes == 0x42) // 0x42 Device is joined, IP is configured, and listening sockets are being set up.
stat = REG_SEARCHING;
else if(intRes == 0xFF) // 0xFF Device is currently scanning for the configured SSID.
stat = REG_SEARCHING;
else stat = REG_UNKNOWN;
break;
}
default: {
if(intRes == 0x00) // 0x00 Connected to the Internet.
stat = REG_OK;
else if(intRes == 0x22) // 0x22 Registering to cellular network.
stat = REG_SEARCHING;
else if(intRes == 0x23) // 0x23 Connecting to the Internet.
stat = REG_SEARCHING;
else if(intRes == 0x24) // 0x24 The cellular component is missing, corrupt, or otherwise in error.
stat = REG_UNKNOWN;
else if(intRes == 0x25) // 0x25 Cellular network registration denied.
stat = REG_DENIED;
else if(intRes == 0x2A) { // 0x2A Airplane mode.
sendAT(GF("AM0")); // Turn off airplane mode
waitResponse();
writeChanges();
stat = REG_UNKNOWN;
}
else if(intRes == 0x2B) { // 0x2B USB Direct active.
stat = REG_UNKNOWN;
}
else if(intRes == 0x2C) // 0x2C Cellular component is in PSM (power save mode).
stat = REG_UNKNOWN;
else if(intRes == 0x2F) { // 0x2F Bypass mode active.
sendAT(GF("AP0")); // Set back to transparent mode
waitResponse();
writeChanges();
stat = REG_UNKNOWN;
}
else if(intRes == 0xFF) // 0xFF Initializing.
stat = REG_SEARCHING;
else stat = REG_UNKNOWN;
break;
}
}
exitCommand();
return stat;
}
String getOperator() {
if (!commandMode()) return ""; // Return immediately
sendAT(GF("MN"));
String res = readResponseString();
exitCommand();
return res;
}
/*
* Generic network functions
*/
int16_t getSignalQuality() {
if (!commandMode()) return 0; // Return immediately
if (beeType == XBEE_UNKNOWN) getSeries(); // Need to know what type of bee so we know how to ask
if (beeType == XBEE_S6B_WIFI) sendAT(GF("LM")); // ask for the "link margin" - the dB above sensitivity
else sendAT(GF("DB")); // ask for the cell strength in dBm
int16_t intRes = readResponseInt();
exitCommand();
if (beeType == XBEE3_LTEM_ATT && intRes == 105) intRes = 0; // tends to reply with "69" when signal is unknown
if (beeType == XBEE_S6B_WIFI) return -93 + intRes; // the maximum sensitivity is -93dBm
else return -1*intRes; // need to convert to negative number
}
bool isNetworkConnected() {
RegStatus s = getRegistrationStatus();
return (s == REG_OK);
}
bool waitForNetwork(unsigned long timeout = 60000L) {
for (unsigned long start = millis(); millis() - start < timeout; ) {
if (isNetworkConnected()) {
return true;
}
delay(250); // per Neil H. - more stable with delay
}
return false;
}
/*
* WiFi functions
*/
bool networkConnect(const char* ssid, const char* pwd) {
if (!commandMode()) return false; // return immediately
//nh For no pwd don't set setscurity or pwd
if (NULL == ssid ) return exitAndFail();
if (NULL != pwd)
{
sendAT(GF("EE"), 2); // Set security to WPA2
if (waitResponse() != 1) return exitAndFail();
sendAT(GF("PK"), pwd);
} else {
sendAT(GF("EE"), 0); // Set No security
}
if (waitResponse() != 1) return exitAndFail();
sendAT(GF("ID"), ssid);
if (waitResponse() != 1) return exitAndFail();
if (!writeChanges()) return exitAndFail();
exitCommand();
return true;
}
bool networkDisconnect() {
if (!commandMode()) return false; // return immediately
sendAT(GF("NR0")); // Do a network reset in order to disconnect
// NOTE: On wifi modules, using a network reset will not
// allow the same ssid to re-join without rebooting the module.
int8_t res = (1 == waitResponse(5000));
writeChanges();
exitCommand();
return res;
}
/*
* IP Address functions
*/
String getLocalIP() {
if (!commandMode()) return ""; // Return immediately
sendAT(GF("MY"));
String IPaddr; IPaddr.reserve(16);
// wait for the response - this response can be very slow
IPaddr = readResponseString(30000);
exitCommand();
IPaddr.trim();
return IPaddr;
}
/*
* GPRS functions
*/
bool gprsConnect(const char* apn, const char* user = NULL, const char* pwd = NULL) {
if (!commandMode()) return false; // Return immediately
sendAT(GF("AN"), apn); // Set the APN
waitResponse();
writeChanges();
exitCommand();
return true;
}
bool gprsDisconnect() {
if (!commandMode()) return false; // return immediately
sendAT(GF("AM1")); // Cheating and disconnecting by turning on airplane mode
int8_t res = (1 == waitResponse(5000));
writeChanges();
sendAT(GF("AM0")); // Airplane mode off
waitResponse(5000);
writeChanges();
exitCommand();
return res;
}
bool isGprsConnected() {
return isNetworkConnected();
}
/*
* Messaging functions
*/
String sendUSSD(const String& code) TINY_GSM_ATTR_NOT_IMPLEMENTED;
bool sendSMS(const String& number, const String& text) {
if (!commandMode()) return false; // Return immediately
sendAT(GF("IP"), 2); // Put in text messaging mode
if (waitResponse() !=1) return exitAndFail();
sendAT(GF("PH"), number); // Set the phone number
if (waitResponse() !=1) return exitAndFail();
sendAT(GF("TDD")); // Set the text delimiter to the standard 0x0D (carriage return)
if (waitResponse() !=1) return exitAndFail();
if (!writeChanges()) return exitAndFail();
exitCommand();
streamWrite(text);
stream.write((char)0x0D); // close off with the carriage return
return true;
}
/*
* Location functions
*/
String getGsmLocation() TINY_GSM_ATTR_NOT_AVAILABLE;
/*
* Battery functions
*/
uint16_t getBattVoltage() TINY_GSM_ATTR_NOT_AVAILABLE;
int8_t getBattPercent() TINY_GSM_ATTR_NOT_AVAILABLE;
/*
* Client related functions
*/
protected:
IPAddress getHostIP(const char* host) {
String strIP; strIP.reserve(16);
unsigned long startMillis = millis();
bool gotIP = false;
// XBee's require a numeric IP address for connection, but do provide the
// functionality to look up the IP address from a fully qualified domain name
while (!gotIP && (millis() - startMillis < 45000L)) // the lookup can take a while
{
sendAT(GF("LA"), host);
while (stream.available() < 4 && (millis() - startMillis < 45000L)) {}; // wait for any response
strIP = stream.readStringUntil('\r'); // read result
strIP.trim();
if (!strIP.endsWith(GF("ERROR"))) gotIP = true;
delay(2500); // wait a bit before trying again
}
if (gotIP) { // No reason to continue if we don't know the IP address
return TinyGsmIpFromString(strIP);
}
else return IPAddress(0,0,0,0);
}
bool modemConnect(const char* host, uint16_t port, uint8_t mux = 0, bool ssl = false) {
// If requested host is the same as the previous one and we already
// have a valid IP address, we don't have to do anything.
if (this->host == String(host) && ipAddr != IPAddress(0,0,0,0)) {
return true;
}
// Otherwise, set the new host and mark the IP as invalid
this->host = String(host);
ipAddr == getHostIP(host); // This will return 0.0.0.0 if lookup fails
// If we now have a valid IP address, use it to connect
if (ipAddr != IPAddress(0,0,0,0)) { // Only re-set connection information if we have an IP address
return modemConnect(ipAddr, port, mux, ssl);
}
else return false;
}
bool modemConnect(IPAddress ip, uint16_t port, uint8_t mux = 0, bool ssl = false) {
ipAddr = ip; // Set the newly requested IP address
bool success = true;
String host; host.reserve(16);
host += ip[0];
host += ".";
host += ip[1];
host += ".";
host += ip[2];
host += ".";
host += ip[3];
if (ssl) {
sendAT(GF("IP"), 4); // Put in SSL over TCP communication mode
success &= (1 == waitResponse());
} else {
sendAT(GF("IP"), 1); // Put in TCP mode
success &= (1 == waitResponse());
}
sendAT(GF("DL"), host); // Set the "Destination Address Low"
success &= (1 == waitResponse());
sendAT(GF("DE"), String(port, HEX)); // Set the destination port
success &= (1 == waitResponse());
return success;
}
int16_t modemSend(const void* buff, size_t len, uint8_t mux = 0) {
stream.write((uint8_t*)buff, len);
stream.flush();
return len;
}
bool modemGetConnected() {
if (!commandMode()) return false; // Return immediately
// If the IP address is 0, it's not valid so we can't be connected
if (ipAddr == IPAddress(0,0,0,0)) return false;
// Verify that we're connected to the *right* IP address
// We might be connected - but to the wrong thing
// NOTE: In transparent mode, there is only one connection possible - no multiplex
String strIP; strIP.reserve(16);
sendAT(GF("DL"));
strIP = stream.readStringUntil('\r'); // read result
if (TinyGsmIpFromString(strIP) != ipAddr) return exitAndFail();
if (beeType == XBEE_UNKNOWN) getSeries(); // Need to know the bee type to interpret response
switch (beeType){ // The wifi be can only say if it's connected to the netowrk
case XBEE_S6B_WIFI: {
RegStatus s = getRegistrationStatus();
if (s != REG_OK) {
sockets[0]->sock_connected = false;
}
return (s == REG_OK); // if it's connected, we hope the sockets are too
}
default: {
sendAT(GF("CI"));
int16_t intRes = readResponseInt();
exitCommand();
if (intRes != 0) {
sockets[0]->sock_connected = false;
}
return (0 == intRes);
}
}
}
public:
/*
Utilities
*/
void streamClear(void) {
while (stream.available()) {
stream.read();
TINY_GSM_YIELD();
}
}
template<typename... Args>
void sendAT(Args... cmd) {
streamWrite("AT", cmd..., GSM_NL);
stream.flush();
TINY_GSM_YIELD();
//DBG("### AT:", cmd...);
}
// TODO: Optimize this!
// NOTE: This function is used while INSIDE command mode, so we're only
// waiting for requested responses. The XBee has no unsoliliced responses
// (URC's) when in command mode.
uint8_t waitResponse(uint32_t timeout, String& data,
GsmConstStr r1=GFP(GSM_OK), GsmConstStr r2=GFP(GSM_ERROR),
GsmConstStr r3=NULL, GsmConstStr r4=NULL, GsmConstStr r5=NULL)
{
/*String r1s(r1); r1s.trim();
String r2s(r2); r2s.trim();
String r3s(r3); r3s.trim();
String r4s(r4); r4s.trim();
String r5s(r5); r5s.trim();
DBG("### ..:", r1s, ",", r2s, ",", r3s, ",", r4s, ",", r5s);*/
data.reserve(16); // Should never be getting much here for the XBee
int8_t index = 0;
unsigned long startMillis = millis();
do {
TINY_GSM_YIELD();
while (stream.available() > 0) {
int a = stream.read();
if (a <= 0) continue; // Skip 0x00 bytes, just in case
data += (char)a;
if (r1 && data.endsWith(r1)) {
index = 1;
goto finish;
} else if (r2 && data.endsWith(r2)) {
index = 2;
goto finish;
} else if (r3 && data.endsWith(r3)) {
index = 3;
goto finish;
} else if (r4 && data.endsWith(r4)) {
index = 4;
goto finish;
} else if (r5 && data.endsWith(r5)) {
index = 5;
goto finish;
}
}
} while (millis() - startMillis < timeout);
finish:
if (!index) {
data.trim();
data.replace(GSM_NL GSM_NL, GSM_NL);
data.replace(GSM_NL, "\r\n ");
if (data.length()) {
DBG("### Unhandled:", data, "\r\n");
} else {
DBG("### NO RESPONSE FROM MODEM!\r\n");
}
} else {
data.trim();
data.replace(GSM_NL GSM_NL, GSM_NL);
data.replace(GSM_NL, "\r\n ");
if (data.length()) {
}
}
//DBG('<', index, '>');
return index;
}
uint8_t waitResponse(uint32_t timeout,
GsmConstStr r1=GFP(GSM_OK), GsmConstStr r2=GFP(GSM_ERROR),
GsmConstStr r3=NULL, GsmConstStr r4=NULL, GsmConstStr r5=NULL)
{
String data;
return waitResponse(timeout, data, r1, r2, r3, r4, r5);
}
uint8_t waitResponse(GsmConstStr r1=GFP(GSM_OK), GsmConstStr r2=GFP(GSM_ERROR),
GsmConstStr r3=NULL, GsmConstStr r4=NULL, GsmConstStr r5=NULL)
{
return waitResponse(1000, r1, r2, r3, r4, r5);
}
bool commandMode(uint8_t retries = 3) {
uint8_t triesMade = 0;
bool success = false;
streamClear(); // Empty everything in the buffer before starting
while (!success and triesMade < retries) {
// Cannot send anything for 1 "guard time" before entering command mode
// Default guard time is 1s, but the init fxn decreases it to 250 ms
delay(guardTime);
streamWrite(GF("+++")); // enter command mode
int res = waitResponse(guardTime*2);
success = (1 == res);
if (0 == res && triesMade > 2) {
pinReset(); // if it's unresponsive, reset
delay(100); // a short delay to allow it to come back up TODO-optimize this
}
triesMade ++;
}
return success;
}
bool writeChanges(void) {
sendAT(GF("WR")); // Write changes to flash
if (1 != waitResponse()) return false;
sendAT(GF("AC")); // Apply changes
if (1 != waitResponse()) return false;
return true;
}
void exitCommand(void) {
sendAT(GF("CN")); // Exit command mode
waitResponse();
}
bool exitAndFail(void) {
exitCommand(); // Exit command mode
return false;
}
void getSeries(void) {
sendAT(GF("HS")); // Get the "Hardware Series";
int16_t intRes = readResponseInt();
beeType = (XBeeType)intRes;
DBG(GF("### Modem: "), getModemName());
}
String readResponseString(uint32_t timeout = 1000) {
TINY_GSM_YIELD();
unsigned long startMillis = millis();
while (!stream.available() && millis() - startMillis < timeout) {};
String res = stream.readStringUntil('\r'); // lines end with carriage returns
res.trim();
return res;
}
int16_t readResponseInt(uint32_t timeout = 1000) {
String res = readResponseString(timeout); // it just works better reading a string first
char buf[5] = {0,};
res.toCharArray(buf, 5);
int16_t intRes = strtol(buf, 0, 16);
return intRes;
}
public:
Stream& stream;
protected:
int16_t guardTime;
int8_t resetPin;
XBeeType beeType;
IPAddress ipAddr;
String host;
GsmClient* sockets[TINY_GSM_MUX_COUNT];
};
#endif
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