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https://git.rwth-aachen.de/acs/public/villas/node/
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43 lines
986 B
C
43 lines
986 B
C
/** Message related functions.
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*
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* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
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* @copyright 2016, Institute for Automation of Complex Power Systems, EONERC
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*********************************************************************************/
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#ifdef __linux__
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#include <byteswap.h>
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#elif defined(__PPC__) /* Xilinx toolchain */
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#include <xil_io.h>
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#define bswap_16(x) Xil_EndianSwap16(x)
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#define bswap_32(x) Xil_EndianSwap32(x)
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#endif
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#include "msg.h"
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#include "node.h"
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#include "utils.h"
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void msg_hdr_swap(struct msg *m)
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{
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m->length = bswap_16(m->length);
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m->sequence = bswap_32(m->sequence);
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m->ts.sec = bswap_32(m->ts.sec);
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m->ts.nsec = bswap_32(m->ts.nsec);
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m->endian ^= 1;
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}
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int msg_verify(struct msg *m)
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{
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if (m->version != MSG_VERSION)
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return -1;
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else if (m->type != MSG_TYPE_DATA)
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return -2;
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else if ((m->rsvd1 != 0) || (m->rsvd2 != 0))
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return -3;
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else
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return 0;
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}
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