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TinyGSM_Senseright/src/TinyGsmClientESP8266.h

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/**
* @file TinyGsmClientESP8266.h
* @author Volodymyr Shymanskyy
* @license LGPL-3.0
* @copyright Copyright (c) 2016 Volodymyr Shymanskyy
* @date Nov 2016
*/
#ifndef TinyGsmClientESP8266_h
#define TinyGsmClientESP8266_h
//#pragma message("TinyGSM: TinyGsmClientESP8266")
//#define TINY_GSM_DEBUG Serial
#if !defined(TINY_GSM_RX_BUFFER)
#define TINY_GSM_RX_BUFFER 512
#endif
#define TINY_GSM_MUX_COUNT 5
#include <TinyGsmCommon.h>
#define GSM_NL "\r\n"
static const char GSM_OK[] TINY_GSM_PROGMEM = "OK" GSM_NL;
static const char GSM_ERROR[] TINY_GSM_PROGMEM = "ERROR" GSM_NL;
static unsigned TINY_GSM_TCP_KEEP_ALIVE = 120;
// <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
// 5 : ESP8266 station did NOT connect to an AP
enum RegStatus {
REG_OK_IP = 2,
REG_OK_TCP = 3,
REG_OK_NO_TCP = 4,
REG_DENIED = 5,
REG_UNKNOWN = 6,
};
class TinyGsmESP8266
{
public:
class GsmClient : public Client
{
friend class TinyGsmESP8266;
typedef TinyGsmFifo<uint8_t, TINY_GSM_RX_BUFFER> RxFifo;
public:
GsmClient() {}
GsmClient(TinyGsmESP8266& modem, uint8_t mux = 1) {
init(&modem, mux);
}
virtual ~GsmClient(){}
bool init(TinyGsmESP8266* modem, uint8_t mux = 1) {
this->at = modem;
this->mux = mux;
sock_connected = false;
at->sockets[mux] = this;
return true;
}
public:
virtual int connect(const char *host, uint16_t port, int timeout_s) {
stop();
TINY_GSM_YIELD();
rx.clear();
sock_connected = at->modemConnect(host, port, mux, false, timeout_s);
return sock_connected;
}
TINY_GSM_CLIENT_CONNECT_OVERLOADS()
virtual void stop(uint32_t maxWaitMs) {
TINY_GSM_YIELD();
at->sendAT(GF("+CIPCLOSE="), mux);
sock_connected = false;
at->waitResponse(maxWaitMs);
rx.clear();
}
virtual void stop() { stop(5000L); }
TINY_GSM_CLIENT_WRITE()
TINY_GSM_CLIENT_AVAILABLE_NO_MODEM_FIFO()
TINY_GSM_CLIENT_READ_NO_MODEM_FIFO()
TINY_GSM_CLIENT_PEEK_FLUSH_CONNECTED()
/*
* Extended API
*/
String remoteIP() TINY_GSM_ATTR_NOT_IMPLEMENTED;
private:
TinyGsmESP8266* at;
uint8_t mux;
bool sock_connected;
RxFifo rx;
};
class GsmClientSecure : public GsmClient
{
public:
GsmClientSecure() {}
GsmClientSecure(TinyGsmESP8266& modem, uint8_t mux = 1)
: GsmClient(modem, mux)
{}
virtual ~GsmClientSecure() {}
public:
virtual int connect(const char *host, uint16_t port, int timeout_s) {
stop();
TINY_GSM_YIELD();
rx.clear();
sock_connected = at->modemConnect(host, port, mux, true, timeout_s);
return sock_connected;
}
};
public:
TinyGsmESP8266(Stream& stream)
: stream(stream)
{
memset(sockets, 0, sizeof(sockets));
}
virtual ~TinyGsmESP8266() {}
/*
* Basic functions
*/
bool begin(const char* pin = NULL) {
return init(pin);
}
bool init(const char* pin = NULL) {
DBG(GF("### TinyGSM Version:"), TINYGSM_VERSION);
if (!testAT()) {
return false;
}
if (pin && strlen(pin) > 0) {
DBG("ESP8266 modules do not use an unlock pin!");
}
sendAT(GF("E0")); // Echo Off
if (waitResponse() != 1) {
return false;
}
sendAT(GF("+CIPMUX=1")); // Enable Multiple Connections
if (waitResponse() != 1) {
return false;
}
sendAT(GF("+CWMODE_CUR=1")); // Put into "station" mode
if (waitResponse() != 1) {
return false;
}
DBG(GF("### Modem:"), getModemName());
return true;
}
String getModemName() {
return "ESP8266";
}
void setBaud(unsigned long baud) {
sendAT(GF("+UART_CUR="), baud, "8,1,0,0");
}
TINY_GSM_MODEM_TEST_AT()
TINY_GSM_MODEM_MAINTAIN_LISTEN()
bool factoryDefault() {
sendAT(GF("+RESTORE"));
return waitResponse() == 1;
}
String getModemInfo() {
sendAT(GF("+GMR"));
String res;
if (waitResponse(1000L, res) != 1) {
return "";
}
res.replace(GSM_NL "OK" GSM_NL, "");
res.replace(GSM_NL, " ");
res.trim();
return res;
}
bool hasSSL() {
return true;
}
bool hasWifi() {
return true;
}
bool hasGPRS() {
return false;
}
/*
* Power functions
*/
bool restart() {
if (!testAT()) {
return false;
}
sendAT(GF("+RST"));
if (waitResponse(10000L) != 1) {
return false;
}
if (waitResponse(10000L, GF(GSM_NL "ready" GSM_NL)) != 1) {
return false;
}
delay(500);
return init();
}
bool poweroff() {
sendAT(GF("+GSLP=0")); // Power down indefinitely - until manually reset!
return waitResponse() == 1;
}
bool radioOff() TINY_GSM_ATTR_NOT_IMPLEMENTED;
bool sleepEnable(bool enable = true) TINY_GSM_ATTR_NOT_IMPLEMENTED;
/*
* SIM card functions
*/
RegStatus getRegistrationStatus() {
sendAT(GF("+CIPSTATUS"));
if (waitResponse(3000, GF("STATUS:")) != 1) return REG_UNKNOWN;
int status =
waitResponse(GFP(GSM_ERROR), GF("2"), GF("3"), GF("4"), GF("5"));
waitResponse(); // Returns an OK after the status
return (RegStatus)status;
}
/*
* Generic network functions
*/
int16_t getSignalQuality() {
sendAT(GF("+CWJAP_CUR?"));
int res1 = waitResponse(GF("No AP"), GF("+CWJAP_CUR:"));
if (res1 != 2) {
waitResponse();
return 0;
}
streamSkipUntil(','); // Skip SSID
streamSkipUntil(','); // Skip BSSID/MAC address
streamSkipUntil(','); // Skip Chanel number
int res2 = stream.parseInt(); // Read RSSI
waitResponse(); // Returns an OK after the value
return res2;
}
bool isNetworkConnected() {
RegStatus s = getRegistrationStatus();
if (s == REG_OK_IP || s == REG_OK_TCP) {
// with these, we're definitely connected
return true;
}
else if (s == REG_OK_NO_TCP) {
// with this, we may or may not be connected
if (getLocalIP() == "") {
return false;
}
else {
return true;
}
}
else {
return false;
}
}
TINY_GSM_MODEM_WAIT_FOR_NETWORK()
/*
* WiFi functions
*/
bool networkConnect(const char* ssid, const char* pwd) {
sendAT(GF("+CWJAP_CUR=\""), ssid, GF("\",\""), pwd, GF("\""));
if (waitResponse(30000L, GFP(GSM_OK), GF(GSM_NL "FAIL" GSM_NL)) != 1) {
return false;
}
return true;
}
bool networkDisconnect() {
sendAT(GF("+CWQAP"));
bool retVal = waitResponse(10000L) == 1;
waitResponse(GF("WIFI DISCONNECT"));
return retVal;
}
/*
* IP Address functions
*/
String getLocalIP() {
sendAT(GF("+CIPSTA_CUR??"));
int res1 = waitResponse(GF("ERROR"), GF("+CWJAP_CUR:"));
if (res1 != 2) {
return "";
}
String res2 = stream.readStringUntil('"');
waitResponse();
return res2;
}
IPAddress localIP() {
return TinyGsmIpFromString(getLocalIP());
}
/*
* Battery & temperature functions
*/
// Use: float vBatt = modem.getBattVoltage() / 1000.0;
uint16_t getBattVoltage() TINY_GSM_ATTR_NOT_AVAILABLE;
int8_t getBattPercent() TINY_GSM_ATTR_NOT_AVAILABLE;
uint8_t getBattChargeState() TINY_GSM_ATTR_NOT_AVAILABLE;
bool getBattStats(uint8_t &chargeState, int8_t &percent, uint16_t &milliVolts) TINY_GSM_ATTR_NOT_AVAILABLE;
float getTemperature() TINY_GSM_ATTR_NOT_AVAILABLE;
/*
* Client related functions
*/
protected:
bool modemConnect(const char* host, uint16_t port, uint8_t mux,
bool ssl = false, int timeout_s = 75)
{
uint32_t timeout_ms = ((uint32_t)timeout_s)*1000;
if (ssl) {
sendAT(GF("+CIPSSLSIZE=4096"));
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(timeout_ms,
GFP(GSM_OK),
GFP(GSM_ERROR),
GF("ALREADY CONNECT"));
// if (rsp == 3) waitResponse(); // May return "ERROR" after the "ALREADY CONNECT"
return (1 == rsp);
}
int16_t modemSend(const void* buff, size_t len, uint8_t mux) {
sendAT(GF("+CIPSEND="), mux, ',', len);
if (waitResponse(GF(">")) != 1) {
return 0;
}
stream.write((uint8_t*)buff, len);
stream.flush();
if (waitResponse(10000L, GF(GSM_NL "SEND OK" GSM_NL)) != 1) {
return 0;
}
return len;
}
bool modemGetConnected(uint8_t mux) {
sendAT(GF("+CIPSTATUS"));
if (waitResponse(3000, GF("STATUS:")) != 1) return REG_UNKNOWN;
int status =
waitResponse(GFP(GSM_ERROR), GF("2"), GF("3"), GF("4"), GF("5"));
if (status != 3) {
// if the status is anything but 3, there are no connections open
waitResponse(); // Returns an OK after the status
for (int muxNo = 0; muxNo < TINY_GSM_MUX_COUNT; muxNo++) {
sockets[muxNo]->sock_connected = false;
}
return false;
}
bool verified_connections[TINY_GSM_MUX_COUNT] = {0, 0, 0, 0, 0};
for (int muxNo = 0; muxNo < TINY_GSM_MUX_COUNT; muxNo++) {
uint8_t has_status = waitResponse(GF("+CIPSTATUS:"), GFP(GSM_OK), GFP(GSM_ERROR));
if (has_status == 1) {
size_t returned_mux = stream.readStringUntil(',').toInt();
streamSkipUntil(','); // Skip mux
streamSkipUntil(','); // Skip type
streamSkipUntil(','); // Skip remote IP
streamSkipUntil(','); // Skip remote port
streamSkipUntil(','); // Skip local port
streamSkipUntil('\n'); // Skip client/server type
verified_connections[returned_mux] = 1;
}
if (has_status == 2) break; // once we get to the ok, stop
}
for (int muxNo = 0; muxNo < TINY_GSM_MUX_COUNT; muxNo++) {
sockets[muxNo]->sock_connected = verified_connections[muxNo];
}
return verified_connections[mux];
}
public:
/*
Utilities
*/
TINY_GSM_MODEM_STREAM_UTILITIES()
// TODO: Optimize this!
uint8_t waitResponse(uint32_t timeout_ms, 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(64);
int index = 0;
unsigned long startMillis = millis();
do {
TINY_GSM_YIELD();
while (stream.available() > 0) {
TINY_GSM_YIELD();
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;
} else if (data.endsWith(GF("+IPD,"))) {
int mux = stream.readStringUntil(',').toInt();
int len = stream.readStringUntil(':').toInt();
int len_orig = len;
if (len > sockets[mux]->rx.free()) {
DBG("### Buffer overflow: ", len, "received vs", sockets[mux]->rx.free(), "available");
} else {
DBG("### Got Data: ", len, "on", mux);
}
while (len--) {
TINY_GSM_MODEM_STREAM_TO_MUX_FIFO_WITH_DOUBLE_TIMEOUT
}
if (len_orig > sockets[mux]->available()) { // TODO
DBG("### Fewer characters received than expected: ", sockets[mux]->available(), " vs ", len_orig);
}
data = "";
} 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_ms);
finish:
if (!index) {
data.trim();
if (data.length()) {
DBG("### Unhandled:", data);
}
data = "";
}
//data.replace(GSM_NL, "/");
//DBG('<', index, '>', data);
return index;
}
uint8_t waitResponse(uint32_t timeout_ms,
GsmConstStr r1=GFP(GSM_OK), GsmConstStr r2=GFP(GSM_ERROR),
GsmConstStr r3=NULL, GsmConstStr r4=NULL, GsmConstStr r5=NULL)
{
String data;
return waitResponse(timeout_ms, 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);
}
public:
Stream& stream;
protected:
GsmClient* sockets[TINY_GSM_MUX_COUNT];
};
#endif