FreeCalypso > hg > freecalypso-tools

annotate target-utils/buzplayer/pwt.c @ 821:16bee7b6bd6b

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buzplayer: PWT needs to be turned on in order to not hang
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 30 May 2021 04:01:33 +0000
parents 03457a66d860
children 7c02cc7f28df
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820
03457a66d860 buzplayer: add basic support for PWT
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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2 * Commands for exercising the Calypso buzzer in PWT mode.
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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 <strings.h>
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7 #include "types.h"
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8
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9 extern u_long strtoul();
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10
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11 #define ASIC_CONF_REG (*(volatile u16 *) 0xFFFEF008)
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12 #define PWT_MODE_MASK 0x0020
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13
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14 #define PWT_FRC_REG (*(volatile u8 *) 0xFFFE8800)
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15 #define PWT_VCR_REG (*(volatile u8 *) 0xFFFE8801)
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16 #define PWT_GCR_REG (*(volatile u8 *) 0xFFFE8802)
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17
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18 void
821
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19 pwt_on()
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20 {
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21 ASIC_CONF_REG |= PWT_MODE_MASK;
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22 PWT_GCR_REG = 0x01;
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23 }
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24
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25 void
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26 pwt_off()
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27 {
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28 ASIC_CONF_REG &= ~PWT_MODE_MASK;
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29 PWT_GCR_REG = 0;
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30 }
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31
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32 void
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33 cmd_pwt(argbulk)
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34 char *argbulk;
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35 {
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36 char *argv[2];
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37
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38 if (parse_args(argbulk, 1, 1, argv, 0) < 0)
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39 return;
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40 if (!strcmp(argv[0], "on"))
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41 pwt_on();
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42 else if (!strcmp(argv[0], "off"))
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43 pwt_off();
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44 else
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45 printf("ERROR: \"on\" or \"off\" argument expected\n");
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46 }
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47
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48 void
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49 cmd_buzpwt(argbulk)
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50 char *argbulk;
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51 {
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52 char *argv[3];
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53 u32 note, vol;
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54 int c;
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55
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56 if (parse_args(argbulk, 1, 2, argv, 0) < 0)
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57 return;
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58 note = strtoul(argv[0], 0, 0);
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59 if (note > 47) {
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60 printf("ERROR: note argument out of range\n");
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61 return;
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62 }
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63 if (argv[1]) {
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64 vol = strtoul(argv[1], 0, 0);
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65 if (vol > 63) {
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66 printf("ERROR: volume argument out of range\n");
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67 return;
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68 }
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69 } else
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70 vol = 63;
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71 pwt_on();
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72 PWT_FRC_REG = note;
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73 PWT_VCR_REG = (vol << 1) | 1;
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74 for (;;) {
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75 c = serial_in_poll();
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76 if (c >= 0)
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77 break;
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78 }
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79 PWT_VCR_REG = 0;
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80 }