The goal of this software is to automatically generate C/C++ code which reads and writes GOOSE and Sampled Value packets. Any valid IEC 61850 Substation Configuration Description (SCD) file, describing GOOSE and/or SV communications, can be used as the input. The output code is lightweight and platform-independent, so it can run on a variety of devices, including low-cost microcontrollers. It\'s ideal for rapid-prototyping new protection and control systems that require communications. This mbed project is a simple example of this functionality. Other code: https://github.com/stevenblair/rapid61850 Project homepage: http://personal.strath.ac.uk/steven.m.blair/
gseDecodePacket.c
- Committer:
- sblair
- Date:
- 2011-10-07
- Revision:
- 0:230c10b228ea
- Child:
- 1:9399d44c2b1a
File content as of revision 0:230c10b228ea:
#include "gseDecodeBasic.h" #include "ied.h" #include "gseDecode.h" #include "gsePacketData.h" #include "decodePacket.h" #include <stddef.h> //temp //#include <stdio.h> //#include <stdlib.h> unsigned char datasetName[65] = {0}; // maximum length of 65 bytes CTYPE_INT16U datasetNameLength = 0; void gseDecodePDU(unsigned char *buf) { unsigned char tag = (unsigned char) buf[0]; // assumes only one byte is used CTYPE_INT16U lengthFieldSize = getLengthFieldSize((unsigned char) buf[1]); CTYPE_INT16U lengthValue = decodeLength((unsigned char *) &buf[1]); CTYPE_INT16U offsetForSequence = 1 + lengthFieldSize; CTYPE_INT16U offsetForNonSequence = 1 + lengthFieldSize + lengthValue; //printf("tag: %x, lengthFieldSize: %i, lengthValue: %i, offset: %i\n", tag, lengthFieldSize, lengthValue, offsetForNonSequence); switch (tag) { case 0x61: gseDecodePDU(&buf[offsetForSequence]); break; case 0x82: // save dataset name memcpy(datasetName, &buf[offsetForSequence], lengthValue); datasetNameLength = lengthValue; //printf("%s, %d\n", datasetName, datasetNameLength); //fflush(stdout); gseDecodePDU(&buf[offsetForNonSequence]); break; case 0xAB: gseDecodeDataset(&buf[offsetForSequence], lengthValue, datasetName, datasetNameLength); return; //break; default: gseDecodePDU(&buf[offsetForNonSequence]); break; } } void gseDecode(unsigned char *buf, int len) { gseDecodePDU(&buf[26]); // cuts out frame header (fixed size of 26 bytes before start of APDU) }