FreeCalypso > hg > freecalypso-tools

annotate rvinterf/lowlevel/packettx.c @ 1012:11391cb6bdc0

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patch from fixeria: doc change from SE K2x0 to K2xx Since their discovery in late 2022, Sony Ericsson K200 and K220 phones were collectively referred to as SE K2x0 in FreeCalypso documentation. However, now that SE K205 has been discovered as yet another member of the same family (same PCBA in different case), it makes more sense to refer to the whole family as SE K2xx.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 23 Sep 2024 12:23:20 +0000
parents e7502631a0f9
children
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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 <sys/time.h>
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7 #include <stdio.h>
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8 #include <string.h>
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9 #include <strings.h>
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10 #include <stdlib.h>
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11 #include <unistd.h>
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12 #include "../include/pktmux.h"
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13 #include "../include/limits.h"
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14
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15 extern int target_fd;
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16 extern int wakeup_after_sec;
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17
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18 static u_char wakeup_shot[64];
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19 static struct timeval last_tx;
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20
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21 send_pkt_to_target(pkt, pktlen)
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22 u_char *pkt;
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23 {
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24 u_char buf[MAX_PKT_TO_TARGET*2+2];
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25 u_char *cp, *dp, *endp;
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26 int c;
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27 struct timeval curtime, timediff;
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28
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29 gettimeofday(&curtime, 0);
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30 if (wakeup_after_sec) {
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31 timersub(&curtime, &last_tx, &timediff);
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32 if (timediff.tv_sec >= wakeup_after_sec) {
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33 write(target_fd, wakeup_shot, sizeof wakeup_shot);
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34 usleep(100000);
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35 }
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36 }
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37 endp = pkt + pktlen;
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38 dp = buf;
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39 *dp++ = STX;
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40 for (cp = pkt; cp < endp; cp++) {
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41 c = *cp;
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42 if (c == STX || c == DLE)
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43 *dp++ = DLE;
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44 *dp++ = c;
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45 }
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46 *dp++ = STX;
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47 write(target_fd, buf, dp - buf);
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48 bcopy(&curtime, &last_tx, sizeof(struct timeval));
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49 }