FreeCalypso > hg > freecalypso-tools

annotate target-utils/libcommon/buzzer.c @ 619:f82551c77e58

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libserial-newlnx: ASYNC_LOW_LATENCY patch reverted Reports from Das Signal indicate that loadtools performance on Debian is about the same as on Slackware, and that including or omitting the ASYNC_LOW_LATENCY patch from Serg makes no difference. Because the patch in question does not appear to be necessary, it is being reverted until and unless someone other than Serg reports an actual real-world system on which loadtools operation times are slowed compared to the Mother's Slackware reference and on which Slackware-like performance can be restored by setting the ASYNC_LOW_LATENCY flag.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 27 Feb 2020 01:09:48 +0000
parents 4be951811791
children
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1 /*
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2 * Commands for exercising the Calypso's buzzer output, whatever
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3 * actual hardware (piezo buzzer or vibrator) it may be driving
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4 * on a given Calypso device.
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5 */
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6
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7 #include <sys/types.h>
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8 #include "types.h"
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9
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10 extern u_long strtoul();
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11
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12 #define ARMIO_LOAD_TIM (*(volatile u16 *) 0xFFFE4808)
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13 #define BUZZ_LIGHT_REG (*(volatile u16 *) 0xFFFE480E)
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14 #define BUZZ_LEVEL_REG (*(volatile u16 *) 0xFFFE4812)
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15
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16 void
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17 cmd_buzlev(argbulk)
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18 char *argbulk;
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19 {
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20 char *argv[2];
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21 u32 arg;
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22
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23 if (parse_args(argbulk, 0, 1, argv, 0) < 0)
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24 return;
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25 if (argv[0]) {
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26 arg = strtoul(argv[0], 0, 0);
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27 if (arg > 0xFFFF) {
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28 printf("ERROR: argument out of range\n");
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29 return;
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30 }
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31 BUZZ_LEVEL_REG = arg;
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32 } else
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33 printf("%04X\n", BUZZ_LEVEL_REG);
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34 }
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35
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36 void
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37 cmd_buz(argbulk)
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38 char *argbulk;
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39 {
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40 char *argv[2];
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41 u32 arg;
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42 int c;
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43
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44 if (parse_args(argbulk, 1, 1, argv, 0) < 0)
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45 return;
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46 arg = strtoul(argv[0], 0, 0);
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47 if (arg > 0xFFFF) {
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48 printf("ERROR: argument out of range\n");
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49 return;
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50 }
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51 ARMIO_LOAD_TIM = arg;
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52 BUZZ_LIGHT_REG = 1;
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53 for (;;) {
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54 c = serial_in_poll();
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55 if (c >= 0)
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56 break;
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57 }
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58 BUZZ_LIGHT_REG = 0;
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59 }