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annotate loadtools/labaud.c @ 923:10b4bed10192

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gsm-fw/L1: fix for the DSP patch corruption bug The L1 code we got from the LoCosto fw contains a feature for DSP CPU load measurement. This feature is a LoCosto-ism, i.e., not applicable to earlier DBB chips (Calypso) with their respective earlier DSP ROMs. Most of the code dealing with that feature is conditionalized as #if (DSP >= 38), but one spot was missed, and the MCU code was writing into an API word dealing with this feature. In TCS211 this DSP API word happens to be used by the DSP code patch, hence that write was corrupting the patched DSP code.
author Mychaela Falconia <falcon@ivan.Harhan.ORG>
date Mon, 19 Oct 2015 17:13:56 +0000
parents 604648026e9c
children
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b015036286f3 fc-loadtool: fast-baud communication with loadagent implemented, works!
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1 /*
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2 * This module handles the switching of serial baud rates
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3 * in coordination with loadagent.
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4 */
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5
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6 #include <stdio.h>
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7 #include <stdlib.h>
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8 #include <termios.h>
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9 #include <unistd.h>
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10 #include "baudrate.h"
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11
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12 extern int target_fd;
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13 extern struct baudrate *current_baud_rate;
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14 extern struct baudrate *find_baudrate_by_name();
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15
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16 loadagent_switch_baud(newbr)
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17 struct baudrate *newbr;
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18 {
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19 char *argv[3];
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20 static char U = 'U';
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21
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604648026e9c fc-xram: baud rate switching implemented per original intent
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22 printf("Switching loadagent communication to %s baud\n", newbr->name);
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23 argv[0] = "baud";
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24 argv[1] = newbr->name;
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25 argv[2] = 0;
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26 tpinterf_make_cmd(argv);
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27 if (tpinterf_send_cmd() < 0)
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28 return(-1);
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29 switch_baud_rate(newbr);
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30 usleep(150000);
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31 write(target_fd, &U, 1);
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32 return tpinterf_pass_output(1);
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33 }
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35 cmd_baud(argc, argv)
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36 char **argv;
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37 {
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38 struct baudrate *br;
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40 if (argc < 2) {
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41 printf("Current baud rate is %s\n", current_baud_rate->name);
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42 return(0);
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43 }
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44 br = find_baudrate_by_name(argv[1]);
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45 if (!br)
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46 return(-1); /* error msg already printed */
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47 return loadagent_switch_baud(br);
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48 }