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https://github.com/KevinMidboe/TinyGSM.git
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Volodymyr Shymanskyy
374
TinyGsmClientESP8266.h
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374
TinyGsmClientESP8266.h
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/**
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* @file TinyWiFiClientESP8266.h
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* @author Volodymyr Shymanskyy
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* @license LGPL-3.0
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* @copyright Copyright (c) 2016 Volodymyr Shymanskyy
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* @date Nov 2016
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*/
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#ifndef TinyWiFiClientESP8266_h
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#define TinyWiFiClientESP8266_h
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//#define TINY_GSM_DEBUG Serial
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#if !defined(TINY_GSM_RX_BUFFER)
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#define TINY_GSM_RX_BUFFER 256
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#endif
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#include <TinyGsmCommon.h>
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#define GSM_NL "\r\n"
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static const char GSM_OK[] TINY_GSM_PROGMEM = "OK" GSM_NL;
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static const char GSM_ERROR[] TINY_GSM_PROGMEM = "ERROR" GSM_NL;
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class TinyGsm
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{
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public:
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TinyGsm(Stream& stream)
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: stream(stream)
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{}
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public:
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class GsmClient : public Client
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{
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friend class TinyGsm;
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typedef TinyGsmFifo<uint8_t, TINY_GSM_RX_BUFFER> RxFifo;
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public:
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GsmClient() {}
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GsmClient(TinyGsm& modem, uint8_t mux = 1) {
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init(&modem, mux);
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}
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bool init(TinyGsm* modem, uint8_t mux = 1) {
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this->at = modem;
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this->mux = mux;
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sock_connected = false;
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at->sockets[mux] = this;
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return true;
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}
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public:
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virtual int connect(const char *host, uint16_t port) {
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TINY_GSM_YIELD();
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rx.clear();
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sock_connected = at->modemConnect(host, port, mux);
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return sock_connected;
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}
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virtual int connect(IPAddress ip, uint16_t port) {
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String host; host.reserve(16);
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host += ip[0];
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host += ".";
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host += ip[1];
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host += ".";
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host += ip[2];
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host += ".";
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host += ip[3];
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return connect(host.c_str(), port);
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}
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virtual void stop() {
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TINY_GSM_YIELD();
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at->sendAT(GF("+CIPCLOSE="), mux);
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sock_connected = false;
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at->waitResponse();
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}
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virtual size_t write(const uint8_t *buf, size_t size) {
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TINY_GSM_YIELD();
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//at->maintain();
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return at->modemSend(buf, size, mux);
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}
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virtual size_t write(uint8_t c) {
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return write(&c, 1);
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}
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virtual int available() {
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TINY_GSM_YIELD();
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if (!rx.size()) {
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at->maintain();
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}
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return rx.size();
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}
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virtual int read(uint8_t *buf, size_t size) {
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TINY_GSM_YIELD();
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size_t cnt = 0;
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while (cnt < size) {
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size_t chunk = TinyGsmMin(size-cnt, rx.size());
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if (chunk > 0) {
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rx.get(buf, chunk);
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buf += chunk;
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cnt += chunk;
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continue;
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}
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// TODO: Read directly into user buffer?
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if (!rx.size()) {
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at->maintain();
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//break;
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}
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}
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return cnt;
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}
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virtual int read() {
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uint8_t c;
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if (read(&c, 1) == 1) {
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return c;
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}
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return -1;
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}
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virtual int peek() { return -1; } //TODO
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virtual void flush() { at->stream.flush(); }
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virtual uint8_t connected() {
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if (available()) {
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return true;
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}
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return sock_connected;
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}
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virtual operator bool() { return connected(); }
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private:
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TinyGsm* at;
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uint8_t mux;
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bool sock_connected;
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RxFifo rx;
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};
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public:
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/*
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* Basic functions
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*/
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bool begin() {
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return init();
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}
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bool init() {
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if (!autoBaud()) {
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return false;
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}
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return true;
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}
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bool autoBaud(unsigned long timeout = 10000L) {
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for (unsigned long start = millis(); millis() - start < timeout; ) {
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sendAT(GF("E0"));
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if (waitResponse(200) == 1) {
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delay(100);
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return true;
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}
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delay(100);
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}
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return false;
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}
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void maintain() {
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//while (stream.available()) {
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waitResponse(10, NULL, NULL);
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//}
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}
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bool factoryDefault() {
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sendAT(GF("+RESTORE"));
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return waitResponse() == 1;
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}
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/*
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* Power functions
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*/
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bool restart() {
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if (!autoBaud()) {
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return false;
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}
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sendAT(GF("+RST"));
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if (waitResponse(10000L) != 1) {
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return false;
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}
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if (waitResponse(10000L, GF(GSM_NL "ready" GSM_NL)) != 1) {
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return false;
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}
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delay(500);
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return autoBaud();
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}
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bool waitForNetwork(unsigned long timeout = 60000L) {
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return true;
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}
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/*
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* WiFi functions
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*/
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bool networkConnect(const char* ssid, const char* pwd) {
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sendAT(GF("+CIPMUX=1"));
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if (waitResponse() != 1) {
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return false;
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}
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sendAT(GF("+CWMODE_CUR=1"));
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if (waitResponse() != 1) {
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return false;
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}
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sendAT(GF("+CWJAP_CUR=\""), ssid, GF("\",\""), pwd, GF("\""));
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if (waitResponse(30000L, GFP(GSM_OK), GF(GSM_NL "FAIL" GSM_NL)) != 1) {
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return false;
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}
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return true;
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}
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bool networkDisconnect() {
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sendAT(GF("+CWQAP"));
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return waitResponse(10000L) == 1;
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}
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private:
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int modemConnect(const char* host, uint16_t port, uint8_t mux) {
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sendAT(GF("+CIPSTART="), mux, ',', GF("\"TCP"), GF("\",\""), host, GF("\","), port, GF(",120"));
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int rsp = waitResponse(75000L,
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GFP(GSM_OK),
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GFP(GSM_ERROR),
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GF(GSM_NL "ALREADY CONNECT" GSM_NL));
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return (1 == rsp);
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}
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int modemSend(const void* buff, size_t len, uint8_t mux) {
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sendAT(GF("+CIPSEND="), mux, ',', len);
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if (waitResponse(GF(">")) != 1) {
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return -1;
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}
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stream.write((uint8_t*)buff, len);
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if (waitResponse(GF(GSM_NL "SEND OK" GSM_NL)) != 1) {
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return -1;
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}
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return len;
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}
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bool modemGetConnected(uint8_t mux) {
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sendAT(GF("+CIPSTATUS="), mux);
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int res = waitResponse(GF(",\"CONNECTED\""), GF(",\"CLOSED\""), GF(",\"CLOSING\""), GF(",\"INITIAL\""));
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waitResponse();
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return 1 == res;
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}
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/* Utilities */
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template<typename T>
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void streamWrite(T last) {
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stream.print(last);
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}
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template<typename T, typename... Args>
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void streamWrite(T head, Args... tail) {
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stream.print(head);
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streamWrite(tail...);
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}
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int streamRead() { return stream.read(); }
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template<typename... Args>
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void sendAT(Args... cmd) {
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streamWrite("AT", cmd..., GSM_NL);
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stream.flush();
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TINY_GSM_YIELD();
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//DBG("### AT:", cmd...);
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}
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// TODO: Optimize this!
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uint8_t waitResponse(uint32_t timeout, String& data,
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GsmConstStr r1=GFP(GSM_OK), GsmConstStr r2=GFP(GSM_ERROR),
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GsmConstStr r3=NULL, GsmConstStr r4=NULL, GsmConstStr r5=NULL)
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{
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/*String r1s(r1); r1s.trim();
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String r2s(r2); r2s.trim();
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String r3s(r3); r3s.trim();
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String r4s(r4); r4s.trim();
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String r5s(r5); r5s.trim();
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DBG("### ..:", r1s, ",", r2s, ",", r3s, ",", r4s, ",", r5s);*/
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data.reserve(64);
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int index = 0;
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unsigned long startMillis = millis();
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do {
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TINY_GSM_YIELD();
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while (stream.available() > 0) {
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int a = streamRead();
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if (a <= 0) continue; // Skip 0x00 bytes, just in case
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data += (char)a;
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if (r1 && data.endsWith(r1)) {
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index = 1;
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goto finish;
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} else if (r2 && data.endsWith(r2)) {
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index = 2;
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goto finish;
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} else if (r3 && data.endsWith(r3)) {
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index = 3;
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goto finish;
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} else if (r4 && data.endsWith(r4)) {
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index = 4;
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goto finish;
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} else if (r5 && data.endsWith(r5)) {
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index = 5;
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goto finish;
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} else if (data.endsWith(GF(GSM_NL "+IPD,"))) {
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int mux = stream.readStringUntil(',').toInt();
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int len = stream.readStringUntil(':').toInt();
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if (len > sockets[mux]->rx.free()) {
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DBG("### Buffer overflow: ", len, "->", sockets[mux]->rx.free());
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} else {
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DBG("### Got: ", len, "->", sockets[mux]->rx.free());
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}
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while (len--) {
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while (!stream.available()) {}
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sockets[mux]->rx.put(stream.read());
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}
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data = "";
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return index;
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} else if (data.endsWith(GF(GSM_NL "1,CLOSED" GSM_NL))) { //TODO: use mux
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sockets[1]->sock_connected = false;
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data = "";
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}
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}
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} while (millis() - startMillis < timeout);
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finish:
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if (!index) {
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data.trim();
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if (data.length()) {
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DBG("### Unhandled:", data);
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}
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data = "";
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}
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return index;
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}
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uint8_t waitResponse(uint32_t timeout,
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GsmConstStr r1=GFP(GSM_OK), GsmConstStr r2=GFP(GSM_ERROR),
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GsmConstStr r3=NULL, GsmConstStr r4=NULL, GsmConstStr r5=NULL)
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{
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String data;
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return waitResponse(timeout, data, r1, r2, r3, r4, r5);
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}
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uint8_t waitResponse(GsmConstStr r1=GFP(GSM_OK), GsmConstStr r2=GFP(GSM_ERROR),
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GsmConstStr r3=NULL, GsmConstStr r4=NULL, GsmConstStr r5=NULL)
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{
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return waitResponse(1000, r1, r2, r3, r4, r5);
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}
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private:
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Stream& stream;
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GsmClient* sockets[5];
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};
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typedef TinyGsm::GsmClient TinyGsmClient;
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#endif
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