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/
Diff: encodePacket.c
- Revision:
- 1:9399d44c2b1a
- Parent:
- 0:230c10b228ea
--- a/encodePacket.c Fri Oct 07 13:41:08 2011 +0000
+++ b/encodePacket.c Fri Oct 07 13:48:18 2011 +0000
@@ -1,34 +1,54 @@
+/**
+ * Rapid-prototyping protection schemes with IEC 61850
+ *
+ * Copyright (c) 2011 Steven Blair
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
#include "encodePacket.h"
#include "svEncodeBasic.h"
int getLengthBytes(int len) {
- if (len <= 126) {
- return 1;
- }
- else if (len <= 255) {
- return 2;
- }
- else {
- return 3;
- }
+ if (len <= 126) {
+ return 1;
+ }
+ else if (len <= 255) {
+ return 2;
+ }
+ else {
+ return 3;
+ }
}
int encodeLength(unsigned char *buf, CTYPE_INT16U len) {
- if (len <= 126) {
- buf[0] = (unsigned char) len;
- return 1;
- }
- else if (len <= 255) {
- buf[0] = (unsigned char) 0x81; // 0x80 specifies larger than one byte; 0x02 is number of length bytes to follow
- buf[1] = (unsigned char) len;
+ if (len <= 126) {
+ buf[0] = (unsigned char) len;
+ return 1;
+ }
+ else if (len <= 255) {
+ buf[0] = (unsigned char) 0x81; // 0x80 specifies larger than one byte; 0x02 is number of length bytes to follow
+ buf[1] = (unsigned char) len;
- return 2;
- }
- else {
- // assume length is not greater than 2^15
- buf[0] = (unsigned char) 0x82; // 0x80 specifies larger than one byte; 0x02 is number of length bytes to follow
- ENCODE_CTYPE_INT16U(&buf[1], &len);
+ return 2;
+ }
+ else {
+ // assume length is not greater than 2^15
+ buf[0] = (unsigned char) 0x82; // 0x80 specifies larger than one byte; 0x02 is number of length bytes to follow
+ ENCODE_CTYPE_INT16U(&buf[1], &len);
- return 3;
- }
+ return 3;
+ }
}