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TinyGsmClientSaraR4.h
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TinyGsmClientSaraR4.h
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/**
* @file TinyGsmClientSaraR4.h
* @author Volodymyr Shymanskyy
* @license LGPL-3.0
* @copyright Copyright (c) 2016 Volodymyr Shymanskyy
* @date Nov 2016
*/
#ifndef TinyGsmClientSaraR4_h
#define TinyGsmClientSaraR4_h
//#pragma message("TinyGSM: TinyGsmClientSaraR4")
//#define TINY_GSM_DEBUG Serial
#if !defined(TINY_GSM_RX_BUFFER)
#define TINY_GSM_RX_BUFFER 64
#endif
#define TINY_GSM_MUX_COUNT 7
#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 const char GSM_CME_ERROR[] TINY_GSM_PROGMEM = GSM_NL "+CME ERROR:";
enum SimStatus {
SIM_ERROR = 0,
SIM_READY = 1,
SIM_LOCKED = 2,
};
enum RegStatus {
REG_UNREGISTERED = 0,
REG_SEARCHING = 2,
REG_DENIED = 3,
REG_OK_HOME = 1,
REG_OK_ROAMING = 5,
REG_UNKNOWN = 4,
};
class TinyGsmSaraR4
{
public:
class GsmClient : public Client
{
friend class TinyGsmSaraR4;
typedef TinyGsmFifo<uint8_t, TINY_GSM_RX_BUFFER> RxFifo;
public:
GsmClient() {}
GsmClient(TinyGsmSaraR4& modem, uint8_t mux = 0) {
init(&modem, mux);
}
bool init(TinyGsmSaraR4* modem, uint8_t mux = 0) {
this->at = modem;
this->mux = mux;
sock_available = 0;
prev_check = 0;
sock_connected = false;
got_data = 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();
uint8_t oldMux = mux;
sock_connected = at->modemConnect(host, port, &mux, false, timeout_s);
if (mux != oldMux) {
DBG("WARNING: Mux number changed from", oldMux, "to", mux);
at->sockets[oldMux] = NULL;
}
at->sockets[mux] = this;
at->maintain();
return sock_connected;
}
TINY_GSM_CLIENT_CONNECT_OVERLOADS()
virtual void stop() {
TINY_GSM_YIELD();
// Read and dump anything remaining in the modem's internal buffer.
// The socket will appear open in response to connected() even after it
// closes until all data is read from the buffer.
// Doing it this way allows the external mcu to find and get all of the data
// that it wants from the socket even if it was closed externally.
rx.clear();
at->maintain();
while (sock_connected && sock_available > 0) {
at->modemRead(TinyGsmMin((uint16_t)rx.free(), sock_available), mux);
rx.clear();
at->maintain();
}
at->modemDisconnect(mux);
}
TINY_GSM_CLIENT_WRITE()
TINY_GSM_CLIENT_AVAILABLE_WITH_BUFFER_CHECK()
TINY_GSM_CLIENT_READ_WITH_BUFFER_CHECK()
TINY_GSM_CLIENT_PEEK_FLUSH_CONNECTED()
/*
* Extended API
*/
String remoteIP() TINY_GSM_ATTR_NOT_IMPLEMENTED;
private:
TinyGsmSaraR4* at;
uint8_t mux;
uint16_t sock_available;
uint32_t prev_check;
bool sock_connected;
bool got_data;
RxFifo rx;
};
class GsmClientSecure : public GsmClient
{
public:
GsmClientSecure() {}
GsmClientSecure(TinyGsmSaraR4& modem, uint8_t mux = 1)
: GsmClient(modem, mux)
{}
public:
virtual int connect(const char *host, uint16_t port, int timeout_s) {
stop();
TINY_GSM_YIELD();
rx.clear();
uint8_t oldMux = mux;
sock_connected = at->modemConnect(host, port, &mux, true, timeout_s);
if (mux != oldMux) {
DBG("WARNING: Mux number changed from", oldMux, "to", mux);
at->sockets[oldMux] = NULL;
}
at->sockets[mux] = this;
at->maintain();
return sock_connected;
}
};
public:
TinyGsmSaraR4(Stream& stream)
: stream(stream)
{
memset(sockets, 0, sizeof(sockets));
}
/*
* 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;
}
sendAT(GF("E0")); // Echo Off
if (waitResponse() != 1) {
return false;
}
#ifdef TINY_GSM_DEBUG
sendAT(GF("+CMEE=2")); // turn on verbose error codes
#else
sendAT(GF("+CMEE=0")); // turn off error codes
#endif
waitResponse();
getModemName();
int ret = getSimStatus();
// if the sim isn't ready and a pin has been provided, try to unlock the sim
if (ret != SIM_READY && pin != NULL && strlen(pin) > 0) {
simUnlock(pin);
return (getSimStatus() == SIM_READY);
}
// if the sim is ready, or it's locked but no pin has been provided, return true
else {
return (ret == SIM_READY || ret == SIM_LOCKED);
}
}
String getModemName() {
sendAT(GF("+CGMI"));
String res1;
if (waitResponse(1000L, res1) != 1) {
return "u-blox Cellular Modem";
}
res1.replace(GSM_NL "OK" GSM_NL, "");
res1.trim();
sendAT(GF("+GMM"));
String res2;
if (waitResponse(1000L, res2) != 1) {
return "u-blox Cellular Modem";
}
res2.replace(GSM_NL "OK" GSM_NL, "");
res2.trim();
String name = res1 + String(' ') + res2;
DBG("### Modem:", name);
if (!name.startsWith("u-blox SARA-R4") && !name.startsWith("u-blox SARA-N4")) {
DBG("### WARNING: You are using the wrong TinyGSM modem!");
}
return name;
}
TINY_GSM_MODEM_SET_BAUD_IPR()
TINY_GSM_MODEM_TEST_AT()
TINY_GSM_MODEM_MAINTAIN_CHECK_SOCKS()
bool factoryDefault() {
sendAT(GF("&F")); // Resets the current profile, other NVM not affected
return waitResponse() == 1;
}
TINY_GSM_MODEM_GET_INFO_ATI()
bool hasSSL() {
return true;
}
bool hasWifi() {
return false;
}
bool hasGPRS() {
return true;
}
/*
* Power functions
*/
bool restart() {
if (!testAT()) {
return false;
}
sendAT(GF("+CFUN=15"));
if (waitResponse(10000L) != 1) {
return false;
}
delay(3000); // TODO: Verify delay timing here
return init();
}
bool poweroff() {
sendAT(GF("+CPWROFF"));
return waitResponse(40000L) == 1;
}
bool radioOff() {
sendAT(GF("+CFUN=0"));
if (waitResponse(10000L) != 1) {
return false;
}
delay(3000);
return true;
}
bool sleepEnable(bool enable = true) TINY_GSM_ATTR_NOT_IMPLEMENTED;
/*
* SIM card functions
*/
TINY_GSM_MODEM_SIM_UNLOCK_CPIN()
TINY_GSM_MODEM_GET_SIMCCID_CCID()
String getIMEI() {
sendAT(GF("+CGSN"));
if (waitResponse(GF(GSM_NL)) != 1) {
return "";
}
String res = stream.readStringUntil('\n');
waitResponse();
res.trim();
return res;
}
SimStatus getSimStatus(unsigned long timeout_ms = 10000L) {
for (unsigned long start = millis(); millis() - start < timeout_ms; ) {
sendAT(GF("+CPIN?"));
if (waitResponse(GF(GSM_NL "+CPIN:")) != 1) {
delay(1000);
continue;
}
int status = waitResponse(GF("READY"), GF("SIM PIN"), GF("SIM PUK"), GF("NOT INSERTED"));
waitResponse();
switch (status) {
case 2:
case 3: return SIM_LOCKED;
case 1: return SIM_READY;
default: return SIM_ERROR;
}
}
return SIM_ERROR;
}
TINY_GSM_MODEM_GET_REGISTRATION_XREG(CEREG)
TINY_GSM_MODEM_GET_OPERATOR_COPS()
/*
* Generic network functions
*/
TINY_GSM_MODEM_GET_CSQ()
bool isNetworkConnected() {
RegStatus s = getRegistrationStatus();
if (s == REG_OK_HOME || s == REG_OK_ROAMING)
return true;
else if (s == REG_UNKNOWN) // for some reason, it can hang at unknown..
return isGprsConnected();
else return false;
}
TINY_GSM_MODEM_WAIT_FOR_NETWORK()
bool setURAT( uint8_t urat ) {
// AT+URAT=<SelectedAcT>[,<PreferredAct>[,<2ndPreferredAct>]]
sendAT(GF("+COPS=2")); // Deregister from network
if (waitResponse() != 1) {
return false;
}
sendAT(GF("+URAT="), urat); // Radio Access Technology (RAT) selection
if (waitResponse() != 1) {
return false;
}
sendAT(GF("+COPS=0")); // Auto-register to the network
if (waitResponse() != 1) {
return false;
}
return restart();
}
/*
* GPRS functions
*/
bool gprsConnect(const char* apn, const char* user = NULL, const char* pwd = NULL) {
gprsDisconnect();
sendAT(GF("+CGATT=1")); // attach to GPRS
if (waitResponse(360000L) != 1) {
return false;
}
// Using CGDCONT sets up an "external" PCP context, i.e. a data connection
// using the external IP stack (e.g. Windows dial up) and PPP link over the
// serial interface. This is the only command set supported by the LTE-M
// and LTE NB-IoT modules (SARA-R4xx, SARA-N4xx)
if (user && strlen(user) > 0) {
sendAT(GF("+CGAUTH=1,0,\""), user, GF("\",\""), pwd, '"'); // Set the authentication
waitResponse();
}
sendAT(GF("+CGDCONT=1,\"IP\",\""), apn, '"'); // Define PDP context 1
waitResponse();
sendAT(GF("+CGACT=1,1")); // activate PDP profile/context 1
if (waitResponse(150000L) != 1) {
return false;
}
return true;
}
bool gprsDisconnect() {
sendAT(GF("+CGACT=1,0")); // Deactivate PDP context 1
if (waitResponse(40000L) != 1) {
return false;
}
sendAT(GF("+CGATT=0")); // detach from GPRS
if (waitResponse(360000L) != 1) {
return false;
}
return true;
}
TINY_GSM_MODEM_GET_GPRS_IP_CONNECTED()
/*
* IP Address functions
*/
String getLocalIP() {
sendAT(GF("+CGPADDR"));
if (waitResponse(GF(GSM_NL "+CGPADDR:")) != 1) {
return "";
}
streamSkipUntil(','); // Skip context id
String res = stream.readStringUntil('\r');
if (waitResponse() != 1) {
return "";
}
return res;
}
IPAddress localIP() {
return TinyGsmIpFromString(getLocalIP());
}
/*
* Phone Call functions
*/
bool setGsmBusy(bool busy = true) TINY_GSM_ATTR_NOT_AVAILABLE;
bool callAnswer() TINY_GSM_ATTR_NOT_IMPLEMENTED;
bool callNumber(const String& number) TINY_GSM_ATTR_NOT_IMPLEMENTED;
bool callHangup() TINY_GSM_ATTR_NOT_IMPLEMENTED;
/*
* Messaging functions
*/
String sendUSSD(const String& code) TINY_GSM_ATTR_NOT_IMPLEMENTED;
bool sendSMS(const String& number, const String& text) {
sendAT(GF("+CSCS=\"GSM\"")); // Set GSM default alphabet
waitResponse();
sendAT(GF("+CMGF=1")); // Set preferred message format to text mode
waitResponse();
sendAT(GF("+CMGS=\""), number, GF("\"")); // set the phone number
if (waitResponse(GF(">")) != 1) {
return false;
}
stream.print(text); // Actually send the message
stream.write((char)0x1A);
stream.flush();
return waitResponse(60000L) == 1;
}
bool sendSMS_UTF16(const String& number, const void* text, size_t len) TINY_GSM_ATTR_NOT_IMPLEMENTED;
/*
* Location functions
*/
String getGsmLocation() {
sendAT(GF("+ULOC=2,3,0,120,1"));
if (waitResponse(30000L, GF(GSM_NL "+UULOC:")) != 1) {
return "";
}
String res = stream.readStringUntil('\n');
waitResponse();
res.trim();
return res;
}
/*
* Battery & temperature functions
*/
uint16_t getBattVoltage() TINY_GSM_ATTR_NOT_AVAILABLE;
int8_t getBattPercent() {
sendAT(GF("+CIND?"));
if (waitResponse(GF(GSM_NL "+CIND:")) != 1) {
return 0;
}
int8_t res = stream.readStringUntil(',').toInt();
int8_t percent = res*20; // return is 0-5
// Wait for final OK
waitResponse();
return percent;
}
uint8_t getBattChargeState() TINY_GSM_ATTR_NOT_AVAILABLE;
bool getBattStats(uint8_t &chargeState, int8_t &percent, uint16_t &milliVolts) {
percent = getBattPercent();
return true;
}
float getTemperature() {
// First make sure the temperature is set to be in celsius
sendAT(GF("+UTEMP=0")); // Would use 1 for Fahrenheit
if (waitResponse() != 1) {
return (float)-9999;
}
sendAT(GF("+UTEMP?"));
if (waitResponse(GF(GSM_NL "+UTEMP:")) != 1) {
return (float)-9999;
}
streamSkipUntil(','); // Skip units (C/F)
int16_t res = stream.readStringUntil('\n').toInt();
float temp = -9999;
if (res != 655355) {
temp = ((float)res)/10;
}
return temp;
}
/*
* Client related functions
*/
protected:
bool modemConnect(const char* host, uint16_t port, uint8_t* mux,
bool ssl = false, int timeout_s = 120)
{
uint32_t timeout_ms = ((uint32_t)timeout_s)*1000;
sendAT(GF("+USOCR=6")); // create a socket
if (waitResponse(GF(GSM_NL "+USOCR:")) != 1) { // reply is +USOCR: ## of socket created
return false;
}
*mux = stream.readStringUntil('\n').toInt();
waitResponse();
if (ssl) {
sendAT(GF("+USOSEC="), *mux, ",1");
waitResponse();
}
// Enable NODELAY
sendAT(GF("+USOSO="), *mux, GF(",6,1,1"));
waitResponse();
// Enable KEEPALIVE, 30 sec
//sendAT(GF("+USOSO="), *mux, GF(",6,2,30000"));
//waitResponse();
// connect on the allocated socket
sendAT(GF("+USOCO="), *mux, ",\"", host, "\",", port);
int rsp = waitResponse(timeout_ms);
return (1 == rsp);
}
bool modemDisconnect(uint8_t mux) {
TINY_GSM_YIELD();
if (!modemGetConnected(mux)) {
sockets[mux]->sock_connected = false;
return true;
}
sendAT(GF("+USOCL="), mux);
return 1 == waitResponse(120000L); // can take up to 120s to get a response
}
int16_t modemSend(const void* buff, size_t len, uint8_t mux) {
sendAT(GF("+USOWR="), mux, ',', len);
if (waitResponse(GF("@")) != 1) {
return 0;
}
// 50ms delay, see AT manual section 25.10.4
delay(50);
stream.write((uint8_t*)buff, len);
stream.flush();
if (waitResponse(GF(GSM_NL "+USOWR:")) != 1) {
return 0;
}
streamSkipUntil(','); // Skip mux
int sent = stream.readStringUntil('\n').toInt();
waitResponse(); // sends back OK after the confirmation of number sent
return sent;
}
size_t modemRead(size_t size, uint8_t mux) {
sendAT(GF("+USORD="), mux, ',', size);
if (waitResponse(GF(GSM_NL "+USORD:")) != 1) {
return 0;
}
streamSkipUntil(','); // Skip mux
size_t len = stream.readStringUntil(',').toInt();
streamSkipUntil('\"');
for (size_t i=0; i<len; i++) {
TINY_GSM_MODEM_STREAM_TO_MUX_FIFO_WITH_DOUBLE_TIMEOUT
}
streamSkipUntil('\"');
waitResponse();
DBG("### READ:", len, "from", mux);
sockets[mux]->sock_available = modemGetAvailable(mux);
return len;
}
size_t modemGetAvailable(uint8_t mux) {
// NOTE: Querying a closed socket gives an error "operation not allowed"
sendAT(GF("+USORD="), mux, ",0");
size_t result = 0;
uint8_t res = waitResponse(GF(GSM_NL "+USORD:"));
// Will give error "operation not allowed" when attempting to read a socket
// that you have already told to close
if (res == 1) {
streamSkipUntil(','); // Skip mux
result = stream.readStringUntil('\n').toInt();
// if (result) DBG("### DATA AVAILABLE:", result, "on", mux);
waitResponse();
} else if (res == 3) {
streamSkipUntil('\n'); // Skip the error text
}
if (!result) {
sockets[mux]->sock_connected = modemGetConnected(mux);
}
return result;
}
bool modemGetConnected(uint8_t mux) {
// NOTE: Querying a closed socket gives an error "operation not allowed"
sendAT(GF("+USOCTL="), mux, ",10");
uint8_t res = waitResponse(GF(GSM_NL "+USOCTL:"));
if (res != 1)
return false;
streamSkipUntil(','); // Skip mux
streamSkipUntil(','); // Skip type
int result = stream.readStringUntil('\n').toInt();
// 0: the socket is in INACTIVE status (it corresponds to CLOSED status
// defined in RFC793 "TCP Protocol Specification" [112])
// 1: the socket is in LISTEN status
// 2: the socket is in SYN_SENT status
// 3: the socket is in SYN_RCVD status
// 4: the socket is in ESTABILISHED status
// 5: the socket is in FIN_WAIT_1 status
// 6: the socket is in FIN_WAIT_2 status
// 7: the sokcet is in CLOSE_WAIT status
// 8: the socket is in CLOSING status
// 9: the socket is in LAST_ACK status
// 10: the socket is in TIME_WAIT status
waitResponse();
return (result != 0);
}
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=GFP(GSM_CME_ERROR), 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) {
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(GSM_NL "+UUSORD:"))) {
int mux = stream.readStringUntil(',').toInt();
int len = stream.readStringUntil('\n').toInt();
if (mux >= 0 && mux < TINY_GSM_MUX_COUNT && sockets[mux]) {
sockets[mux]->got_data = true;
sockets[mux]->sock_available = len;
}
data = "";
DBG("### URC Data Received:", len, "on", mux);
} else if (data.endsWith(GF(GSM_NL "+UUSOCL:"))) {
int mux = stream.readStringUntil('\n').toInt();
if (mux >= 0 && mux < TINY_GSM_MUX_COUNT && sockets[mux]) {
sockets[mux]->sock_connected = false;
}
data = "";
DBG("### URC Sock Closed:", mux);
}
}
} while (millis() - startMillis < timeout_ms);
finish:
if (!index) {
data.trim();
if (data.length()) {
DBG("### Unhandled:", data);
}
data = "";
}
//DBG('<', index, '>');
return index;
}
uint8_t waitResponse(uint32_t timeout_ms,
GsmConstStr r1=GFP(GSM_OK), GsmConstStr r2=GFP(GSM_ERROR),
GsmConstStr r3=GFP(GSM_CME_ERROR), 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=GFP(GSM_CME_ERROR), 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