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annotate loadtools/tpinterfb.c @ 1014:961efadd530a default tip

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fc-shell TCH DL handler: add support for CSD modes TCH DL capture mechanism in FC Tourmaline firmware has been extended to support CSD modes in addition to speech - add the necessary support on the host tools side. It needs to be noted that this mechanism in its present state does NOT provide the debug utility value that was sought: as we learned only after the code was implemented, TI's DSP has a misfeature in that the buffer we are reading (a_dd_0[]) is zeroed out when the IDS block is enabled, i.e., we are reading all zeros and not the real DL bits we were after. But since the code has already been written, we are keeping it - perhaps we can do some tests with IDS disabled.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 26 Nov 2024 06:27:43 +0000
parents 8d7dcfd9df53
children
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1 /*
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2 * This module contains functions for binary (as opposed to our usual ASCII)
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3 * interfacing to loadagent.
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4 */
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5
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6 #include <sys/types.h>
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7 #include <sys/time.h>
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8 #include <sys/errno.h>
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9 #include <stdio.h>
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10 #include <string.h>
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11 #include <strings.h>
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12 #include <stdlib.h>
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13 #include <unistd.h>
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14
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15 extern int errno;
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16
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17 extern int target_fd;
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18
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19 collect_binblock_from_target(buf, expect_len, timeout)
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20 u_char *buf;
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21 unsigned expect_len;
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22 {
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23 fd_set fds;
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24 struct timeval tv;
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25 unsigned rcvd;
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26 int cc;
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27
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28 for (rcvd = 0; rcvd < expect_len; ) {
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29 FD_ZERO(&fds);
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30 FD_SET(target_fd, &fds);
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31 tv.tv_sec = timeout;
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32 tv.tv_usec = 0;
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33 cc = select(target_fd+1, &fds, NULL, NULL, &tv);
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34 if (cc < 0) {
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35 if (errno == EINTR)
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36 continue;
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37 perror("select");
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38 return(-1);
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39 }
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40 if (cc < 1) {
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41 fprintf(stderr,
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42 "error: timeout waiting for binary block\n");
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43 return(-1);
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44 }
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45 cc = read(target_fd, buf + rcvd, expect_len - rcvd);
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46 if (cc <= 0) {
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47 perror("read after successful select");
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48 return(-1);
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49 }
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50 rcvd += cc;
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51 }
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52 return(0);
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53 }