mirror of
https://github.com/KevinMidboe/TinyGSM.git
synced 2025-10-29 18:00:18 +00:00
311 lines
8.9 KiB
C++
311 lines
8.9 KiB
C++
/**************************************************************
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*
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* For this example, you need to install CRC32 library:
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* https://github.com/bakercp/CRC32
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* or from http://librarymanager/all#CRC32+checksum
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*
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* TinyGSM Getting Started guide:
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* https://tiny.cc/tinygsm-readme
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*
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* ATTENTION! Downloading big files requires of knowledge of
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* the TinyGSM internals and some modem specifics,
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* so this is for more experienced developers.
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*
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**************************************************************/
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// Select your modem:
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#define TINY_GSM_MODEM_SIM800
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// #define TINY_GSM_MODEM_SIM808
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// #define TINY_GSM_MODEM_SIM868
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// #define TINY_GSM_MODEM_SIM900
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// #define TINY_GSM_MODEM_SIM7000
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// #define TINY_GSM_MODEM_SIM5360
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// #define TINY_GSM_MODEM_UBLOX
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// #define TINY_GSM_MODEM_SARAR4
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// #define TINY_GSM_MODEM_M95
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// #define TINY_GSM_MODEM_BG96
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// #define TINY_GSM_MODEM_A6
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// #define TINY_GSM_MODEM_A7
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// #define TINY_GSM_MODEM_M590
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// #define TINY_GSM_MODEM_MC60
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// #define TINY_GSM_MODEM_MC60E
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// #define TINY_GSM_MODEM_ESP8266
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// #define TINY_GSM_MODEM_XBEE
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// #define TINY_GSM_MODEM_SEQUANS_MONARCH
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// Set serial for debug console (to the Serial Monitor, default speed 115200)
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#define SerialMon Serial
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// Set serial for AT commands (to the module)
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// Use Hardware Serial on Mega, Leonardo, Micro
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#define SerialAT Serial1
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// or Software Serial on Uno, Nano
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//#include <SoftwareSerial.h>
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//SoftwareSerial SerialAT(2, 3); // RX, TX
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// Increase RX buffer to capture the entire response
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// Chips without internal buffering (A6/A7, ESP8266, M590)
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// need enough space in the buffer for the entire response
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// else data will be lost (and the http library will fail).
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#define TINY_GSM_RX_BUFFER 1024
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// See all AT commands, if wanted
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//#define DUMP_AT_COMMANDS
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// Define the serial console for debug prints, if needed
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#define TINY_GSM_DEBUG SerialMon
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//#define LOGGING // <- Logging is for the HTTP library
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// Add a reception delay, if needed
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//#define TINY_GSM_YIELD() { delay(2); }
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#define TINY_GSM_USE_GPRS true
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#define TINY_GSM_USE_WIFI false
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// set GSM PIN, if any
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#define GSM_PIN ""
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// Your GPRS credentials
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// Leave empty, if missing user or pass
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const char apn[] = "YourAPN";
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const char gprsUser[] = "";
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const char gprsPass[] = "";
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const char wifiSSID[] = "YourSSID";
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const char wifiPass[] = "YourWiFiPass";
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// Server details
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const char server[] = "vsh.pp.ua";
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const int port = 80;
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#include <TinyGsmClient.h>
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#include <CRC32.h>
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const char resource[] = "/TinyGSM/test_1k.bin";
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uint32_t knownCRC32 = 0x6f50d767;
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uint32_t knownFileSize = 1024; // In case server does not send it
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#ifdef DUMP_AT_COMMANDS
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#include <StreamDebugger.h>
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StreamDebugger debugger(SerialAT, SerialMon);
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TinyGsm modem(debugger);
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#else
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TinyGsm modem(SerialAT);
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#endif
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TinyGsmClient client(modem);
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void setup() {
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// Set console baud rate
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SerialMon.begin(115200);
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delay(10);
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// Set GSM module baud rate
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SerialAT.begin(115200);
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delay(3000);
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// Restart takes quite some time
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// To skip it, call init() instead of restart()
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SerialMon.println("Initializing modem...");
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modem.restart();
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String modemInfo = modem.getModemInfo();
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SerialMon.print("Modem: ");
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SerialMon.println(modemInfo);
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#if TINY_GSM_USE_GPRS
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// Unlock your SIM card with a PIN if needed
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if ( GSM_PIN && modem.getSimStatus() != 3 ) {
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modem.simUnlock(GSM_PIN);
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}
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#endif
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}
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void printPercent(uint32_t readLength, uint32_t contentLength) {
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// If we know the total length
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if (contentLength != (uint32_t)-1) {
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SerialMon.print("\r ");
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SerialMon.print((100.0 * readLength) / contentLength);
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SerialMon.print('%');
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} else {
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SerialMon.println(readLength);
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}
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}
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void loop() {
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#if defined TINY_GSM_USE_WIFI && defined TINY_GSM_MODEM_HAS_WIFI
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SerialMon.print(F("Setting SSID/password..."));
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if (!modem.networkConnect(wifiSSID, wifiPass)) {
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SerialMon.println(" fail");
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delay(10000);
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return;
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}
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SerialMon.println(" success");
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#endif
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#if TINY_GSM_USE_GPRS && defined TINY_GSM_MODEM_XBEE
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// The XBee must run the gprsConnect function BEFORE waiting for network!
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modem.gprsConnect(apn, gprsUser, gprsPass);
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#endif
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SerialMon.print("Waiting for network...");
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if (!modem.waitForNetwork()) {
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SerialMon.println(" fail");
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delay(10000);
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return;
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}
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SerialMon.println(" success");
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if (modem.isNetworkConnected()) {
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SerialMon.println("Network connected");
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}
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#if TINY_GSM_USE_GPRS && defined TINY_GSM_MODEM_HAS_GPRS
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SerialMon.print(F("Connecting to "));
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SerialMon.print(apn);
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if (!modem.gprsConnect(apn, gprsUser, gprsPass)) {
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SerialMon.println(" fail");
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delay(10000);
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return;
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}
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SerialMon.println(" success");
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#endif
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SerialMon.print(F("Connecting to "));
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SerialMon.print(server);
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if (!client.connect(server, port)) {
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SerialMon.println(" fail");
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delay(10000);
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return;
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}
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SerialMon.println(" success");
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// Make a HTTP GET request:
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client.print(String("GET ") + resource + " HTTP/1.0\r\n");
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client.print(String("Host: ") + server + "\r\n");
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client.print("Connection: close\r\n\r\n");
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// Let's see what the entire elapsed time is, from after we send the request.
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unsigned long timeElapsed = millis();
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SerialMon.println(F("Waiting for response header"));
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// While we are still looking for the end of the header (i.e. empty line FOLLOWED by a newline),
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// continue to read data into the buffer, parsing each line (data FOLLOWED by a newline).
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// If it takes too long to get data from the client, we need to exit.
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const uint32_t clientReadTimeout = 5000;
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uint32_t clientReadStartTime = millis();
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String headerBuffer;
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bool finishedHeader = false;
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uint32_t contentLength = 0;
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while (!finishedHeader) {
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int nlPos;
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if (client.available()) {
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clientReadStartTime = millis();
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while (client.available()) {
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char c = client.read();
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headerBuffer += c;
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// Uncomment the lines below to see the data coming into the buffer
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// if (c < 16)
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// SerialMon.print('0');
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// SerialMon.print(c, HEX);
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// SerialMon.print(' ');
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// if (isprint(c))
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// SerialMon.print((char) c);
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// else
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// SerialMon.print('*');
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// SerialMon.print(' ');
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// Let's exit and process if we find a new line
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if (headerBuffer.indexOf(F("\r\n")) >= 0)
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break;
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}
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}
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else {
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if (millis() - clientReadStartTime > clientReadTimeout) {
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// Time-out waiting for data from client
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SerialMon.println(F(">>> Client Timeout !"));
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break;
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}
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}
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// See if we have a new line.
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nlPos = headerBuffer.indexOf(F("\r\n"));
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if (nlPos > 0) {
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headerBuffer.toLowerCase();
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// Check if line contains content-length
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if (headerBuffer.startsWith(F("content-length:"))) {
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contentLength = headerBuffer.substring(headerBuffer.indexOf(':') + 1).toInt();
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// SerialMon.print(F("Got Content Length: ")); // uncomment for
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// SerialMon.println(contentLength); // confirmation
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}
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headerBuffer.remove(0, nlPos + 2); // remove the line
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}
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else if (nlPos == 0) {
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// if the new line is empty (i.e. "\r\n" is at the beginning of the line), we are done with the header.
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finishedHeader = true;
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}
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}
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// The two cases which are not managed properly are as follows:
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// 1. The client doesn't provide data quickly enough to keep up with this loop.
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// 2. If the client data is segmented in the middle of the 'Content-Length: ' header,
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// then that header may be missed/damaged.
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//
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uint32_t readLength = 0;
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CRC32 crc;
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if (finishedHeader && contentLength == knownFileSize) {
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SerialMon.println(F("Reading response data"));
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clientReadStartTime = millis();
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printPercent(readLength, contentLength);
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while (readLength < contentLength && client.connected() && millis() - clientReadStartTime < clientReadTimeout) {
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while (client.available()) {
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uint8_t c = client.read();
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//SerialMon.print((char)c); // Uncomment this to show data
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crc.update(c);
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readLength++;
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if (readLength % (contentLength / 13) == 0) {
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printPercent(readLength, contentLength);
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}
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clientReadStartTime = millis();
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}
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}
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printPercent(readLength, contentLength);
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}
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timeElapsed = millis() - timeElapsed;
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SerialMon.println();
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// Shutdown
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client.stop();
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SerialMon.println(F("Server disconnected"));
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modem.gprsDisconnect();
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SerialMon.println(F("GPRS disconnected"));
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float duration = float(timeElapsed) / 1000;
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SerialMon.println();
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SerialMon.print("Content-Length: "); SerialMon.println(contentLength);
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SerialMon.print("Actually read: "); SerialMon.println(readLength);
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SerialMon.print("Calc. CRC32: 0x"); SerialMon.println(crc.finalize(), HEX);
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SerialMon.print("Known CRC32: 0x"); SerialMon.println(knownCRC32, HEX);
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SerialMon.print("Duration: "); SerialMon.print(duration); SerialMon.println("s");
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// Do nothing forevermore
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while (true) {
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delay(1000);
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}
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}
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