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!
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 expences
- Covering cellular network expenses
- Buying new hardware and modems for integration
- Bounty Budget (to reward other developers for their contributions)
- Implementing new features
@ -113,10 +114,10 @@ If you have found TinyGSM to be useful in your work, research or company, please
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
- 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)
4. Check if serial connection is working (Hardware Serial is recommended)
Send an ```AT``` command using [this sketch](tools/AT_Debug/AT_Debug.ino)
If you have any issues:
@ -129,20 +130,20 @@ If you have any issues:
## How does it work?
Many GSM modems, WiFi and radio modules can be controlled by sending AT commands over Serial.
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
For GPRS data streams, this library provides the standard [Arduino Client](https://www.arduino.cc/en/Reference/ClientConstructor) interface.
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)
## Troubleshooting
### Diagnostics sketch
Use this sketch to diagnose your SIM card and GPRS connection:
@ -155,10 +156,10 @@ So this actually solves stability problems in **many** cases:
### SoftwareSerial problems
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.
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 HardwareSerial
@ -173,15 +174,15 @@ Please [refer to this comment](https://github.com/vshymanskyy/TinyGSM/issues/102
### Broken initial configuration
Sometimes (especially if you played with AT comands), your module configuration may become invalid.
Sometimes (especially if you played with AT commands), your module configuration may become invalid.
This may result in problems such as:
* Can't connect to the GPRS network
* Can't connect to the server
* Sent/recieved data contains invalid bytes
* Sent/received data contains invalid bytes
* etc.
To return module to **Factory Defaults**, use this sketch:
To return module to **Factory Defaults**, use this sketch:
Sara Damiano
6 years ago