annotate target-utils/simtest/poll.c @ 587:5b88ba62b9ae

doc/Rvinterf-tools: rvinterf -P option documented
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 03 Feb 2020 07:56:57 +0000
parents d96ea6ae6aa5
children
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1 #include <sys/types.h>
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2 #include <strings.h>
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3 #include "types.h"
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4 #include "simregs.h"
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5
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6 extern int serial_in_poll();
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7
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8 int enable_poll;
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9
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10 void
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11 poll_sim_rx()
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12 {
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13 u32 drx;
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14
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15 if (SIMREGS.stat & SIM_STAT_FEMPTY)
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16 return;
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17 drx = SIMREGS.drx & 0xFF;
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18 printf("%02X ", drx);
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19 }
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20
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21 int
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22 mygetchar()
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23 {
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24 register int c;
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25
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26 do {
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27 if (enable_poll)
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28 poll_sim_rx();
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29 c = serial_in_poll();
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30 }
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31 while (c < 0);
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32 return c;
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33 }
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34
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35 void
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36 cmd_poll(argbulk)
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37 char *argbulk;
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38 {
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39 char *argv[2];
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40
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41 if (parse_args(argbulk, 1, 1, argv, 0) < 0)
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42 return;
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43 if (!strcmp(argv[0], "on"))
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44 enable_poll = 1;
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45 else if (!strcmp(argv[0], "off"))
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46 enable_poll = 0;
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47 else
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48 printf("ERROR: \"on\" or \"off\" argument expected\n");
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49 }