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- A small Arduino library for GSM modules, that just works.
- <!---
- [](https://github.com/vshymanskyy/TinyGSM/releases/latest)--->
- [](https://github.com/vshymanskyy/TinyGSM/releases/latest)
- [](https://travis-ci.org/vshymanskyy/TinyGSM)
- [](https://github.com/vshymanskyy/TinyGSM/issues)
- [](https://github.com/vshymanskyy/TinyGSM/wiki)
- [](https://github.com/vshymanskyy/TinyGSM/stargazers)
- [](https://github.com/vshymanskyy/TinyGSM/blob/master/LICENSE)
-
- If you like **TinyGSM** - give it a star, or fork it and contribute!
- [](https://github.com/vshymanskyy/TinyGSM/stargazers)
- [](https://github.com/vshymanskyy/TinyGSM/network)
-
- You can also join our chat:
- [](https://gitter.im/tinygsm)
-
- ### Arduino Client interface support
- This library is easy to integrate with lots of sketches which use Ethernet or WiFi.
- **PubSubClient ([MQTT](http://mqtt.org/))**, **[Blynk](http://blynk.cc)**, **HTTP Client** and **File Download** examples are provided.
-
- 
-
- ### TinyGSM is tiny
- The complete WebClient example for Arduino Uno (via Software Serial) takes little resources:
- ```
- Sketch uses 15022 bytes (46%) of program storage space. Maximum is 32256 bytes.
- Global variables use 574 bytes (28%) of dynamic memory, leaving 1474 bytes for local variables. Maximum is 2048 bytes.
- ```
- Arduino GSM library uses 15868 bytes (49%) of Flash and 1113 bytes (54%) of RAM in a similar scenario.
- TinyGSM also pulls data gently from the modem (whenever possible), so it can operate on very little RAM.
- **Now, you have more space for your experiments.**
-
-
- ## Supported modems
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- - SIMCom SIM800 series (SIM800A, SIM800C, SIM800L, SIM800H, SIM808, SIM868)
- - SIMCom SIM900 series (SIM900A, SIM900D, SIM908, SIM968)
- - SIMCom WCDMA/HSPA/HSPA+ Modules (SIM5360, SIM5320, SIM5300E, SIM5300EA)
- - SIMCom LTE Modules (SIM7100E, SIM7500E, SIM7500A, SIM7600C, SIM7600E)
- - SIMCom SIM7000E CAT-M1/NB-IoT Module
- - AI-Thinker A6, A6C, A7, A20
- - ESP8266 (AT commands interface, similar to GSM modems)
- - Digi XBee WiFi and Cellular (using XBee command mode)
- - Neoway M590
- - u-blox 2G, 3G, 4G, and LTE Cat1 Cellular Modems (many modules including LEON-G100, LISA-U2xx, SARA-G3xx, SARA-U2xx, TOBY-L2xx, LARA-R2xx, MPCI-L2xx)
- - u-blox LTE-M Modems (SARA-R4xx, SARA-N4xx, _but NOT SARA-N2xx_)
- - Sequans Monarch LTE Cat M1/NB1
- - Quectel BG96
- - Quectel M95
- - Quectel MC60 ***(alpha)***
-
- ### Supported boards/modules
- - Arduino MKR GSM 1400
- - GPRSbee
- - Microduino GSM
- - Adafruit FONA (Mini Cellular GSM Breakout)
- - Adafruit FONA 800/808 Shield
- - Industruino GSM
- - RAK WisLTE ***(alpha)***
- - ... other modules, based on supported modems. Some boards require [**special configuration**](https://github.com/vshymanskyy/TinyGSM/wiki/Board-configuration).
-
- More modems may be supported later:
- - [ ] Quectel M10, UG95
- - [ ] SIMCom SIM7020
- - [ ] Telit GL865
- - [ ] ZTE MG2639
- - [ ] Hi-Link HLK-RM04
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- Watch this repo for new updates! And of course, contributions are welcome ;)
-
- ## Features
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- **Data connections**
- - TCP (HTTP, MQTT, Blynk, ...)
- - ALL modules support TCP connections
- - UDP
- - Not yet supported on any module, though it may be some day
- - SSL/TLS (HTTPS)
- - Supported on¹:
- - SIM800, u-Blox, XBee _cellular_, ESP8266, and Sequans Monarch
- ¹ - only some device models or firmware revisions have this feature (SIM8xx R14.18, A7, etc.)
- - Not yet supported on:
- - Quectel modems, SIM7000, SIM5360/5320/7100/7500/7600
- - Not possible on:
- - SIM900, A6/A7, M560, XBee _WiFi_
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- **USSD**
- - Sending USSD requests and decoding 7,8,16-bit responses
- - Supported on:
- - SIM800/SIM900, SIM7000
- - Not yet supported on:
- - Quectel modems, SIM5360/5320/7100/7500/7600, XBee
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- **SMS**
- - Only _sending_ SMS is supported, not receiving
- - Supported on:
- - SIM800/SIM900, SIM7000, XBee
- - Not yet supported on:
- - Quectel modems, SIM5360/5320/7100/7500/7600
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- **Voice Calls**
- - Only Supported on SIM800 and A6/A7/A20
- - Dial, hangup
- - Receiving calls
- - Incoming event (RING)
- - DTMF sending
- - DTMF decoding
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- **Location**
- - GPS/GNSS
- - SIM808 and SIM7000 only
- - GSM location service
- - SIM800, SIM and SIM7000 only
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- **Credits**
- - Primary Author/Contributor:
- - [vshymanskyy](https://github.com/vshymanskyy)
- - Digi XBee, editing of all modules:
- - [SRGDamia1](https://github.com/SRGDamia1/)
- - SIM7000:
- - [captFuture](https://github.com/captFuture/)
- - Sequans Monarch:
- - [nootropicdesign](https://github.com/nootropicdesign/)
- - Quectel M9C60
- - [V1pr](https://github.com/V1pr)
- - Quectel M95
- - [replicadeltd](https://github.com/replicadeltd)
- - Other Contributors:
- - https://github.com/vshymanskyy/TinyGSM/graphs/contributors
-
-
- ## Donation
-
- [](https://salt.bountysource.com/checkout/amount?team=tinygsm-dev)
- [](http://tny.im/aen)
-
- If you have found TinyGSM to be useful in your work, research or company, please consider making a donation to the project commensurate with your resources. Any amount helps!
- **All donations will be used strictly to fund the development of TinyGSM:**
- - Covering cellular network expenses
- - Buying new hardware and modems for integration
- - Bounty Budget (to reward other developers for their contributions)
- - Implementing new features
- - Quality Assurance
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- ## Getting Started
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- 1. Using your phone:
- - Disable PIN code on the SIM card
- - Check your balance
- - Check that APN, User, Pass are correct and you have internet
- 2. Ensure the SIM card is correctly inserted into the module
- 3. Ensure that GSM antenna is firmly attached
- 4. Check if serial connection is working (Hardware Serial is recommended)
- Send an ```AT``` command using [this sketch](tools/AT_Debug/AT_Debug.ino)
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- If you have any issues:
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- 1. Read the whole README (you're looking at it!)
- 2. Some boards require [**special configuration**](https://github.com/vshymanskyy/TinyGSM/wiki/Board-configuration).
- 3. Try running the Diagnostics sketch
- 4. Check for [**highlighted topics here**](https://github.com/vshymanskyy/TinyGSM/issues?utf8=%E2%9C%93&q=is%3Aissue+label%3A%22for+reference%22+)
- 5. If you have a question, please post it in our [Gitter chat](https://gitter.im/tinygsm)
-
- ## How does it work?
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- Many GSM modems, WiFi and radio modules can be controlled by sending AT commands over Serial.
- TinyGSM knows which commands to send, and how to handle AT responses, and wraps that into standard Arduino Client interface.
-
- ## API Reference
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- For GPRS data streams, this library provides the standard [Arduino Client](https://www.arduino.cc/en/Reference/ClientConstructor) interface.
- For additional functions, please refer to [this example sketch](examples/AllFunctions/AllFunctions.ino)
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- ## Troubleshooting
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- ### Diagnostics sketch
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- Use this sketch to diagnose your SIM card and GPRS connection:
- File -> Examples -> TinyGSM -> tools -> [Diagnostics](https://github.com/vshymanskyy/TinyGSM/blob/master/tools/Diagnostics/Diagnostics.ino)
-
- ### Ensure stable data & power connection
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- Most modules require up to 2A and specific voltage - according to the module documentation.
- So this actually solves stability problems in **many** cases:
- - Provide a good stable power supply. Read about [**powering your module**](https://github.com/vshymanskyy/TinyGSM/wiki/Powering-GSM-module).
- - Keep your wires as short as possible
- - Consider soldering them for a stable connection
- - Do not put your wires next to noisy signal sources (buck converters, antennas, oscillators etc.)
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- ### SoftwareSerial problems
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- When using ```SoftwareSerial``` (on Uno, Nano, etc), the speed **115200** may not work.
- Try selecting **57600**, **38400**, or even lower - the one that works best for you.
- In some cases **9600** is unstable, but using **38400** helps, etc.
- Be sure to set correct TX/RX pins in the sketch. Please note that not every Arduino pin can serve as TX or RX pin.
- **Read more about SoftSerial options and configuration [here](https://www.pjrc.com/teensy/td_libs_AltSoftSerial.html) and [here](https://www.arduino.cc/en/Reference/SoftwareSerial).**
-
- ### ESP32 Notes
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- #### HardwareSerial
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- When using ESP32 `HardwareSerial`, you may need to specify additional parameters to the `.begin()` call.
- Please [refer to this comment](https://github.com/vshymanskyy/TinyGSM/issues/91#issuecomment-356024747).
-
- #### HttpClient
- You will not be able to compile the HttpClient or HttpsClient examples with ESP32 core >1.0.1. Downgrade to version 1.0.1 or use the WebClient example. Please comment on the issue on the ESP32 core, not in this library: https://github.com/espressif/arduino-esp32/issues/2755
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- ### SAMD21
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- When using SAMD21-based boards, you may need to use a sercom uart port instead of `Serial1`.
- Please [refer to this comment](https://github.com/vshymanskyy/TinyGSM/issues/102#issuecomment-345548941).
-
- ### Broken initial configuration
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- Sometimes (especially if you played with AT commands), your module configuration may become invalid.
- This may result in problems such as:
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- * Can't connect to the GPRS network
- * Can't connect to the server
- * Sent/received data contains invalid bytes
- * etc.
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- To return module to **Factory Defaults**, use this sketch:
- File -> Examples -> TinyGSM -> tools -> [FactoryReset](https://github.com/vshymanskyy/TinyGSM/blob/master/tools/FactoryReset/FactoryReset.ino)
-
- ### Goouuu Tech IOT-GA6 vs AI-Thinker A6 confusion
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- It turns out that **Goouuu Tech IOT-GA6** is not the same as **AI-Thinker A6**. Unfortunately IOT-GA6 is not supported out of the box yet. There are some hints that IOT-GA6 firmware may be updated to match A6... See [this topic](https://github.com/vshymanskyy/TinyGSM/issues/164).
-
- __________
-
- ### License
- This project is released under
- The GNU Lesser General Public License (LGPL-3.0)
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