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438 lines
10 KiB
438 lines
10 KiB
/**
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* @file TinyGsmClient.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 TinyGsmClient_h
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#define TinyGsmClient_h
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#if defined(SPARK) || defined(PARTICLE)
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#include "Particle.h"
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#elif defined(ARDUINO)
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#if ARDUINO >= 100
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#include "Arduino.h"
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#else
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#include "WProgram.h"
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#endif
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#endif
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#include <Client.h>
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#include <TinyGsmFifo.h>
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#if defined(__AVR__)
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#define GSM_PROGMEM PROGMEM
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typedef const __FlashStringHelper* GsmConstStr;
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#define FP(x) (reinterpret_cast<GsmConstStr>(x))
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#else
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#define GSM_PROGMEM
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typedef const char* GsmConstStr;
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#define FP(x) x
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#undef F
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#define F(x) x
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#endif
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//#define GSM_USE_HEX
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#define GSM_RX_BUFFER 64
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#define GSM_NL "\r\n"
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static constexpr char GSM_OK[] GSM_PROGMEM = "OK" GSM_NL;
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static constexpr char GSM_ERROR[] GSM_PROGMEM = "ERROR" GSM_NL;
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class TinyGsmClient
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: public Client
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{
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typedef TinyGsmFifo<uint8_t, GSM_RX_BUFFER> RxFifo;
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#ifdef GSM_DEBUG
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template<typename T>
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void DBG(T last) {
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GSM_DEBUG.println(last);
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}
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template<typename T, typename... Args>
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void DBG(T head, Args... tail) {
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GSM_DEBUG.print(head);
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GSM_DEBUG.print(' ');
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DBG(tail...);
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}
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#else
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#define DBG(...)
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#endif
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public:
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TinyGsmClient(Stream& stream, uint8_t mux = 1)
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: stream(stream)
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, mux(mux)
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, sock_available(0)
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, sock_connected(false)
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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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return modemConnect(host, port);
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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 modemConnect(host.c_str(), port);
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}
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virtual void stop() {
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sendAT(F("+CIPCLOSE="), mux);
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sock_connected = false;
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waitResponse();
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}
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virtual size_t write(const uint8_t *buf, size_t size) {
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maintain();
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return modemSend(buf, size);
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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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maintain();
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size_t res = rx.size();
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if (res > 0) {
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return res;
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}
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return sock_available;
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}
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virtual int read(uint8_t *buf, size_t size) {
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maintain();
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size_t cnt = 0;
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while (cnt < size) {
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size_t chunk = min(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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} else {
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modemRead(rx.free()); //TODO: min(rx.free(), sock_available)
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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() { stream.flush(); }
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virtual uint8_t connected() {
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maintain();
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return sock_connected;
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}
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virtual operator bool() { return connected(); }
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public:
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bool factoryDefault() {
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if (!autoBaud()) {
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return false;
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}
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sendAT(F("&FZE0&W")); // Factory + Reset + Echo Off + Write
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waitResponse();
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sendAT(F("+IPR=0")); // Auto-baud
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waitResponse();
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sendAT(F("+IFC=0,0")); // No Flow Control
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waitResponse();
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sendAT(F("+ICF=3,3")); // 8 data 0 parity 1 stop
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waitResponse();
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sendAT(F("+CSCLK=0")); // Disable Slow Clock
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waitResponse();
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sendAT(F("&W")); // Write configuration
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return waitResponse() == 1;
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}
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bool restart() {
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autoBaud();
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sendAT(F("+CFUN=0"));
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if (waitResponse(10000L) != 1) {
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return false;
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}
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sendAT(F("+CFUN=1,1"));
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if (waitResponse(10000L) != 1) {
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return false;
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}
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delay(3000);
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autoBaud();
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sendAT(F("E0"));
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if (waitResponse() != 1) {
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return false;
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}
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return 1 == waitResponse(60000, F("Ready"));
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}
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bool networkConnect(const char* apn, const char* user, const char* pwd) {
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autoBaud();
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// AT+CPIN=pin-code
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// AT+CREG?
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networkDisconnect();
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// AT+CGATT?
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// AT+CGATT=1
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sendAT(F("+CIPMUX=1"));
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if (waitResponse() != 1) {
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return false;
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}
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sendAT(F("+CIPQSEND=1"));
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if (waitResponse() != 1) {
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return false;
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}
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sendAT(F("+CIPRXGET=1"));
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if (waitResponse() != 1) {
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return false;
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}
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sendAT(F("+CSTT=\""), apn, F("\",\""), user, F("\",\""), pwd, F("\""));
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if (waitResponse(60000L) != 1) {
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return false;
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}
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sendAT(F("+CIICR"));
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if (waitResponse(60000L) != 1) {
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return false;
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}
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sendAT(F("+CIFSR;E0"));
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String data;
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if (waitResponse(10000L, data) != 1) {
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data.replace(GSM_NL, "");
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return false;
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}
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sendAT(F("+CDNSCFG=\"8.8.8.8\",\"8.8.4.4\""));
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if (waitResponse() != 1) {
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return false;
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}
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// AT+CIPSTATUS
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return true;
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}
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bool networkDisconnect() {
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sendAT(F("+CIPSHUT"));
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return waitResponse(60000L) == 1;
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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("");
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if (waitResponse() == 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);
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}
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}
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private:
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int modemConnect(const char* host, uint16_t port) {
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sendAT(F("+CIPSTART="), mux, ',', F("\"TCP"), F("\",\""), host, F("\","), port);
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sock_connected = (1 == waitResponse(75000L, F("CONNECT OK" GSM_NL), F("CONNECT FAIL" GSM_NL), F("ALREADY CONNECT" GSM_NL)));
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return sock_connected;
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}
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int modemSend(const void* buff, size_t len) {
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sendAT(F("+CIPSEND="), mux, ',', len);
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if (waitResponse(F(">")) != 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(F(GSM_NL "DATA ACCEPT:")) != 1) {
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return -1;
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}
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stream.readStringUntil(',');
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String data = stream.readStringUntil('\n');
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return data.toInt();
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}
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size_t modemRead(size_t size) {
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#ifdef GSM_USE_HEX
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sendAT(F("+CIPRXGET=3,"), mux, ',', size);
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if (waitResponse(F("+CIPRXGET: 3,")) != 1) {
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return 0;
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}
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#else
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sendAT(F("+CIPRXGET=2,"), mux, ',', size);
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if (waitResponse(F("+CIPRXGET: 2,")) != 1) {
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return 0;
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}
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#endif
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stream.readStringUntil(','); // Skip mux
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size_t len = stream.readStringUntil(',').toInt();
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sock_available = stream.readStringUntil('\n').toInt();
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for (size_t i=0; i<len; i++) {
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#ifdef GSM_USE_HEX
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while (stream.available() < 2) { delay(1); }
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char buf[4] = { 0, };
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buf[0] = stream.read();
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buf[1] = stream.read();
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char c = strtol(buf, NULL, 16);
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#else
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while (stream.available() < 1) { delay(1); }
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char c = stream.read();
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#endif
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rx.put(c);
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}
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waitResponse();
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return len;
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}
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size_t modemGetAvailable() {
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sendAT(F("+CIPRXGET=4,"), mux);
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size_t result = 0;
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for (byte i = 0; i < 2; i++) {
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int res = waitResponse(F("+CIPRXGET: 4"), FP(GSM_OK), FP(GSM_ERROR));
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if (res == 1) {
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stream.readStringUntil(',');
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stream.readStringUntil(',');
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result = stream.readStringUntil('\n').toInt();
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} else if (res == 2) {
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} else {
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return result;
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}
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}
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if (!result) {
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sock_connected = modemGetConnected();
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}
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return result;
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}
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bool modemGetConnected() {
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sendAT(F("+CIPSTATUS="), mux);
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int res = waitResponse(F(",\"CONNECTED\""), F(",\"CLOSED\""), F(",\"CLOSING\""), F(",\"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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void streamReadAll() { while(stream.available()) { 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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}
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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=FP(GSM_OK), GsmConstStr r2=FP(GSM_ERROR),
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GsmConstStr r3=NULL, GsmConstStr r4=NULL, GsmConstStr r5=NULL)
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{
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data.reserve(64);
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bool gotNewData = false;
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int index = 0;
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for (unsigned long start = millis(); millis() - start < timeout; ) {
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while (stream.available() > 0) {
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int a = streamRead();
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if (a < 0) continue; //?
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data += (char)a;
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if (data.indexOf(r1) >= 0) {
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index = 1;
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goto finish;
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} else if (r2 && data.indexOf(r2) >= 0) {
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index = 2;
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goto finish;
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} else if (r3 && data.indexOf(r3) >= 0) {
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index = 3;
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goto finish;
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} else if (r4 && data.indexOf(r4) >= 0) {
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index = 4;
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goto finish;
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} else if (r5 && data.indexOf(r5) >= 0) {
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index = 5;
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goto finish;
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} else if (data.indexOf(F(GSM_NL "+CIPRXGET: 1,1" GSM_NL)) >= 0) { //TODO: use mux
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gotNewData = true;
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data = "";
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} else if (data.indexOf(F(GSM_NL "1, CLOSED" GSM_NL)) >= 0) { //TODO: use mux
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sock_connected = false;
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data = "";
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}
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}
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}
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finish:
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if (!index) {
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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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if (gotNewData) {
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sock_available = modemGetAvailable();
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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=FP(GSM_OK), GsmConstStr r2=FP(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=FP(GSM_OK), GsmConstStr r2=FP(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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const uint8_t mux;
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RxFifo rx;
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uint16_t sock_available;
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bool sock_connected;
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};
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#endif
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