FreeCalypso > hg > freecalypso-sw

annotate rvinterf/old/packettx.c @ 638:0b5f226bfdf4

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gsm-fw/services/pcm: import from Leonardo source (FFS)
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Wed, 03 Sep 2014 16:26:27 +0000
parents f42854da4563
children
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171
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1 /*
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2 * This module handles the lowest level of serial packet Tx
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3 */
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4
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5 #include <sys/types.h>
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6 #include <stdio.h>
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7 #include <stdlib.h>
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8 #include <unistd.h>
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9 #include "pktmux.h"
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10 #include "txpkt.h"
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11
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12 extern int target_fd;
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13
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14 send_pkt_to_target(pkt, pktlen)
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15 u_char *pkt;
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16 {
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17 u_char buf[MAX_PKT_TO_TARGET*2+2];
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18 u_char *cp, *dp, *endp;
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19 int c;
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20
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21 endp = pkt + pktlen;
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22 dp = buf;
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23 *dp++ = STX;
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24 for (cp = pkt; cp < endp; cp++) {
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25 c = *cp;
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26 if (c == STX || c == DLE)
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27 *dp++ = DLE;
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28 *dp++ = c;
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29 }
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30 *dp++ = STX;
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31 write(target_fd, buf, dp - buf);
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32 }