Steven Blair
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/
encodePacket.c@1:9399d44c2b1a, 2011-10-07 (annotated)
- Committer:
- sblair
- Date:
- Fri Oct 07 13:48:18 2011 +0000
- Revision:
- 1:9399d44c2b1a
- Parent:
- 0:230c10b228ea
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| sblair | 1:9399d44c2b1a | 1 | /** |
| sblair | 1:9399d44c2b1a | 2 | * Rapid-prototyping protection schemes with IEC 61850 |
| sblair | 1:9399d44c2b1a | 3 | * |
| sblair | 1:9399d44c2b1a | 4 | * Copyright (c) 2011 Steven Blair |
| sblair | 1:9399d44c2b1a | 5 | * |
| sblair | 1:9399d44c2b1a | 6 | * This program is free software; you can redistribute it and/or |
| sblair | 1:9399d44c2b1a | 7 | * modify it under the terms of the GNU General Public License |
| sblair | 1:9399d44c2b1a | 8 | * as published by the Free Software Foundation; either version 2 |
| sblair | 1:9399d44c2b1a | 9 | * of the License, or (at your option) any later version. |
| sblair | 1:9399d44c2b1a | 10 | |
| sblair | 1:9399d44c2b1a | 11 | * This program is distributed in the hope that it will be useful, |
| sblair | 1:9399d44c2b1a | 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| sblair | 1:9399d44c2b1a | 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| sblair | 1:9399d44c2b1a | 14 | * GNU General Public License for more details. |
| sblair | 1:9399d44c2b1a | 15 | |
| sblair | 1:9399d44c2b1a | 16 | * You should have received a copy of the GNU General Public License |
| sblair | 1:9399d44c2b1a | 17 | * along with this program; if not, write to the Free Software |
| sblair | 1:9399d44c2b1a | 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| sblair | 1:9399d44c2b1a | 19 | */ |
| sblair | 1:9399d44c2b1a | 20 | |
| sblair | 0:230c10b228ea | 21 | #include "encodePacket.h" |
| sblair | 0:230c10b228ea | 22 | #include "svEncodeBasic.h" |
| sblair | 0:230c10b228ea | 23 | |
| sblair | 0:230c10b228ea | 24 | int getLengthBytes(int len) { |
| sblair | 1:9399d44c2b1a | 25 | if (len <= 126) { |
| sblair | 1:9399d44c2b1a | 26 | return 1; |
| sblair | 1:9399d44c2b1a | 27 | } |
| sblair | 1:9399d44c2b1a | 28 | else if (len <= 255) { |
| sblair | 1:9399d44c2b1a | 29 | return 2; |
| sblair | 1:9399d44c2b1a | 30 | } |
| sblair | 1:9399d44c2b1a | 31 | else { |
| sblair | 1:9399d44c2b1a | 32 | return 3; |
| sblair | 1:9399d44c2b1a | 33 | } |
| sblair | 0:230c10b228ea | 34 | } |
| sblair | 0:230c10b228ea | 35 | |
| sblair | 0:230c10b228ea | 36 | int encodeLength(unsigned char *buf, CTYPE_INT16U len) { |
| sblair | 1:9399d44c2b1a | 37 | if (len <= 126) { |
| sblair | 1:9399d44c2b1a | 38 | buf[0] = (unsigned char) len; |
| sblair | 1:9399d44c2b1a | 39 | return 1; |
| sblair | 1:9399d44c2b1a | 40 | } |
| sblair | 1:9399d44c2b1a | 41 | else if (len <= 255) { |
| sblair | 1:9399d44c2b1a | 42 | buf[0] = (unsigned char) 0x81; // 0x80 specifies larger than one byte; 0x02 is number of length bytes to follow |
| sblair | 1:9399d44c2b1a | 43 | buf[1] = (unsigned char) len; |
| sblair | 0:230c10b228ea | 44 | |
| sblair | 1:9399d44c2b1a | 45 | return 2; |
| sblair | 1:9399d44c2b1a | 46 | } |
| sblair | 1:9399d44c2b1a | 47 | else { |
| sblair | 1:9399d44c2b1a | 48 | // assume length is not greater than 2^15 |
| sblair | 1:9399d44c2b1a | 49 | buf[0] = (unsigned char) 0x82; // 0x80 specifies larger than one byte; 0x02 is number of length bytes to follow |
| sblair | 1:9399d44c2b1a | 50 | ENCODE_CTYPE_INT16U(&buf[1], &len); |
| sblair | 0:230c10b228ea | 51 | |
| sblair | 1:9399d44c2b1a | 52 | return 3; |
| sblair | 1:9399d44c2b1a | 53 | } |
| sblair | 0:230c10b228ea | 54 | } |