Maptor

IRI.Maptor.Core.GsmGprs

NuGet Target

GSM/GPRS communication primitives for the Maptor stack: SMS PDU encoding (building the hexadecimal SMS-SUBMIT/SMS-DELIVER byte streams sent to a GSM modem via AT commands) and a serial-port modem connection type.

Installation

dotnet add package IRI.Maptor.Core.GsmGprs

Features

  • SMS-SUBMIT PDU encoding: SmsSubmit builds the complete hex PDU (PduCode) for an outgoing message
  • SMS-DELIVER PDU construction via SmsDeliver
  • PduEncoder — service-center number encoding and UCS-2 user-data encoding
  • TPDU parameter types: TP-MTI, TP-DCS, TP-PID, TP-VP/TP-VPF, TP-RD, TP-SRI/TP-SRR, TP-UDHI, TP-RP, TP-MMS
  • Address field handling: type-of-number (TON) and numbering-plan-identification (NPI) via the Address struct
  • GsmConnection — serial-port configuration (port name, baud rate, data bits) for a GSM/GPRS modem

Usage

Encode an outgoing SMS as a PDU:

using IRI.Maptor.Core.GsmGprs;
using IRI.Maptor.Core.GsmGprs.AddressField;

var destination = new Address(989121234567);

var sms = new SmsSubmit(smscNumber: 989120000000, destination, "Hello from Maptor");

string pdu = sms.PduCode;   // hex PDU, ready to send with AT+CMGS

Limitations

  • PDU decoding of incoming messages is not implemented (PduDecoder is an empty placeholder).
  • Message text is encoded as UCS-2 only.
  • GsmConnection.IsModemConnected() is not implemented yet.

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