mirror of
https://github.com/KevinMidboe/TinyGSM.git
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59 lines
2.0 KiB
Markdown
59 lines
2.0 KiB
Markdown
```
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_______ _____ __ _ __ __ ______ _______ _______
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| | | \ | \_/ | ____ |______ | | |
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| __|__ | \_| | |_____| ______| | | |
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```
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A small Arduino library for GPRS modules, that just works
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Currently only SIM800/SIM900 are tested, more modules may be supported later.
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## Features
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#### Supports Arduino Client interface
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This library is very easy to integrate with lots of sketches, which used Ethernet or WiFi previously.
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Examples for **Blynk**, **MQTT**, **Web Client** and **File Download** are provided.
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#### Tiny
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WebClient example for Arduino Nano (with Software Serial) takes little resources:
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```
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Sketch uses 11,916 bytes (38%) of program storage space. Maximum is 30,720 bytes.
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Global variables use 649 bytes (31%) of dynamic memory. Maximum is 2,048 bytes.
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```
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Now, you have more space for your experiments.
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#### Uses internal modem buffer for receive
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TinyGSM pulls data gently from the modem, so it can operate on very little RAM.
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## Getting started
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1. Using your phone:
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- Disable PIN code on the SIM card
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- Check your ballance
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- Check that APN,User,Pass are correct and you have internet
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2. Ensure the SIM card is correctly inserted into the module
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3. Provide a good, stable power supply (up to 2A, 4.0-4.2V or 5V according to your module documentation)
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4. Provide good, stable serial connection
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(Hardware Serial is recommended)
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5. Check if GSM antenna is attached
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## Troubleshooting
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Sometimes (especially if you played with AT comands), your module configuration may become invalid.
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This may result in problems such as:
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* Can't connect to the GPRS network
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* Can't connect to the server
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* Sent/recieved data contains invalid bytes
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* etc.
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To return module to **Factory Defaults**, use this sketch:
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File -> Examples -> TynyGSM -> tools -> [FactoryReset](https://github.com/vshymanskyy/TinyGSM/blob/master/tools/FactoryReset/FactoryReset.ino)
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__________
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### License
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This project is released under
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The GNU Lesser General Public License (LGPL-3.0)
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