HeboTech.ATLib 0.0.7

ATLib

ATLib is a C# AT command library that abstracts away the commands and makes it easy to communicate with modems.

Hayes command set (commonly known as AT commands) is a command set frequently used in modems. Read more about it at Wikipedia.

ATLib is just in the beginning. Currently only a few commands are implemented, but more will come.

Supported commands:

• Send SMS
• Answer incoming call
• Hang up call
• Get SIM status
• Enter SIM PIN
• Get remaining PIN & PUK attempts
• Get product information
• Get battery status
• Get signal strength
• Disable echo

Supported modems:

• SIMCOM SIM5320
• Adafruit FONA 3G

• Other modems may work using one of the implementations above

Usage

Install as NuGet package

dotnet add package HeboTech.ATLib

Using a serial port to communicate with a modem is easy:

// Set up serial port
using (SerialPort serialPort = new SerialPort(args[0], 9600, Parity.None, 8, StopBits.One))
{
  // Open serial port
  serialPort.Open();
  
  // Create a new communicator based on the serial port
  ICommunicator comm = new SerialPortCommunicator(serialPort);

  // Create a new AT channel based on the communicator
  AtChannel atChannel = new AtChannel(comm);

  // Create the modem
  AdafruitFona3G modem = new AdafruitFona3G(atChannel);

  // The library doesn't support echo, so turn it off
  modem.DisableEcho();

  // Get SIM status
  var simStatus = modem.GetSimStatus();
  Console.WriteLine($"SIM Status: {simStatus}");
  
  // Send SMS to the specified number
  var smsReference = modem.SendSMS(new PhoneNumber("0123456789"), "Hello ATLib!");
  Console.WriteLine($"SMS Reference: {smsReference}");
}

For more examples, check out the TestConsole project in the code.

Feedback is welcome 😃