v2.9
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lib/TinyGSM/src/TinyGsmSMS.tpp
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224
lib/TinyGSM/src/TinyGsmSMS.tpp
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/**
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* @file TinyGsmSMS.tpp
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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 SRC_TINYGSMSMS_H_
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#define SRC_TINYGSMSMS_H_
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#include "TinyGsmCommon.h"
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#define TINY_GSM_MODEM_HAS_SMS
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template <class modemType>
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class TinyGsmSMS {
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public:
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/*
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* Messaging functions
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*/
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String sendUSSD(const String& code) {
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return thisModem().sendUSSDImpl(code);
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}
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bool sendSMS(const String& number, const String& text) {
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return thisModem().sendSMSImpl(number, text);
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}
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bool sendSMS_UTF16(const char* const number, const void* text, size_t len) {
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return thisModem().sendSMS_UTF16Impl(number, text, len);
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}
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/*
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* CRTP Helper
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*/
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protected:
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inline const modemType& thisModem() const {
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return static_cast<const modemType&>(*this);
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}
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inline modemType& thisModem() {
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return static_cast<modemType&>(*this);
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}
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/*
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* Messaging functions
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*/
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protected:
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static inline String TinyGsmDecodeHex7bit(String& instr) {
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String result;
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byte reminder = 0;
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int8_t bitstate = 7;
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for (uint8_t i = 0; i < instr.length(); i += 2) {
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char buf[4] = {
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0,
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};
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buf[0] = instr[i];
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buf[1] = instr[i + 1];
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byte b = strtol(buf, NULL, 16);
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byte bb = b << (7 - bitstate);
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char c = (bb + reminder) & 0x7F;
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result += c;
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reminder = b >> bitstate;
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bitstate--;
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if (bitstate == 0) {
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char cc = reminder;
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result += cc;
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reminder = 0;
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bitstate = 7;
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}
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}
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return result;
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}
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static inline String TinyGsmDecodeHex8bit(String& instr) {
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String result;
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for (uint16_t i = 0; i < instr.length(); i += 2) {
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char buf[4] = {
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0,
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};
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buf[0] = instr[i];
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buf[1] = instr[i + 1];
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char b = strtol(buf, NULL, 16);
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result += b;
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}
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return result;
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}
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static inline String TinyGsmDecodeHex16bit(String& instr) {
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String result;
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for (uint16_t i = 0; i < instr.length(); i += 4) {
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char buf[4] = {
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0,
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};
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buf[0] = instr[i];
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buf[1] = instr[i + 1];
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char b = strtol(buf, NULL, 16);
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if (b) { // If high byte is non-zero, we can't handle it ;(
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#if defined(TINY_GSM_UNICODE_TO_HEX)
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result += "\\x";
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result += instr.substring(i, i + 4);
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#else
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result += "?";
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#endif
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} else {
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buf[0] = instr[i + 2];
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buf[1] = instr[i + 3];
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b = strtol(buf, NULL, 16);
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result += b;
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}
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}
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return result;
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}
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String sendUSSDImpl(const String& code) {
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// Set preferred message format to text mode
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thisModem().sendAT(GF("+CMGF=1"));
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thisModem().waitResponse();
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// Set 8-bit hexadecimal alphabet (3GPP TS 23.038)
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thisModem().sendAT(GF("+CSCS=\"HEX\""));
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thisModem().waitResponse();
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// Send the message
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thisModem().sendAT(GF("+CUSD=1,\""), code, GF("\""));
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if (thisModem().waitResponse() != 1) { return ""; }
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if (thisModem().waitResponse(10000L, GF("+CUSD:")) != 1) { return ""; }
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thisModem().stream.readStringUntil('"');
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String hex = thisModem().stream.readStringUntil('"');
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thisModem().stream.readStringUntil(',');
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int8_t dcs = thisModem().streamGetIntBefore('\n');
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if (dcs == 15) {
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return TinyGsmDecodeHex8bit(hex);
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} else if (dcs == 72) {
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return TinyGsmDecodeHex16bit(hex);
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} else {
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return hex;
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}
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}
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bool sendSMSImpl(const String& number, const String& text) {
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// Set preferred message format to text mode
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thisModem().sendAT(GF("+CMGF=1"));
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thisModem().waitResponse();
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// Set GSM 7 bit default alphabet (3GPP TS 23.038)
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thisModem().sendAT(GF("+CSCS=\"GSM\""));
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thisModem().waitResponse();
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thisModem().sendAT(GF("+CMGS=\""), number, GF("\""));
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if (thisModem().waitResponse(GF(">")) != 1) { return false; }
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thisModem().stream.print(text); // Actually send the message
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thisModem().stream.write(static_cast<char>(0x1A)); // Terminate the message
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thisModem().stream.flush();
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return thisModem().waitResponse(60000L) == 1;
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}
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// Common methods for UTF8/UTF16 SMS.
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// Supported by: BG96, M95, MC60, SIM5360, SIM7000, SIM7600, SIM800
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class UTF8Print : public Print {
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public:
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explicit UTF8Print(Print& p) : p(p) {}
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size_t write(const uint8_t c) override {
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if (prv < 0xC0) {
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if (c < 0xC0) printHex(c);
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prv = c;
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} else {
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uint16_t v = uint16_t(prv) << 8 | c;
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v -= (v >> 8 == 0xD0) ? 0xCC80 : 0xCD40;
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printHex(v);
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prv = 0;
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}
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return 1;
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}
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private:
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Print& p;
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uint8_t prv = 0;
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void printHex(const uint16_t v) {
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uint8_t c = v >> 8;
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if (c < 0x10) p.print('0');
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p.print(c, HEX);
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c = v & 0xFF;
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if (c < 0x10) p.print('0');
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p.print(c, HEX);
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}
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};
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bool sendSMS_UTF8_begin(const char* const number) {
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thisModem().sendAT(GF("+CMGF=1"));
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thisModem().waitResponse();
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thisModem().sendAT(GF("+CSCS=\"HEX\""));
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thisModem().waitResponse();
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thisModem().sendAT(GF("+CSMP=17,167,0,8"));
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thisModem().waitResponse();
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thisModem().sendAT(GF("+CMGS=\""), number, GF("\""));
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return thisModem().waitResponse(GF(">")) == 1;
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}
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bool sendSMS_UTF8_end() {
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thisModem().stream.write(static_cast<char>(0x1A));
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thisModem().stream.flush();
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return thisModem().waitResponse(60000L) == 1;
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}
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UTF8Print sendSMS_UTF8_stream() {
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return UTF8Print(thisModem().stream);
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}
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bool sendSMS_UTF16Impl(const char* const number, const void* text,
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size_t len) {
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if (!sendSMS_UTF8_begin(number)) { return false; }
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uint16_t* t =
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const_cast<uint16_t*>(reinterpret_cast<const uint16_t*>(text));
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for (size_t i = 0; i < len; i++) {
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uint8_t c = t[i] >> 8;
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if (c < 0x10) { thisModem().stream.print('0'); }
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thisModem().stream.print(c, HEX);
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c = t[i] & 0xFF;
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if (c < 0x10) { thisModem().stream.print('0'); }
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thisModem().stream.print(c, HEX);
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}
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return sendSMS_UTF8_end();
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}
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};
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#endif // SRC_TINYGSMSMS_H_
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