FreeCalypso > hg > freecalypso-tools

annotate target-utils/buzplayer/melplay.c @ 828:502aec4c1e8e

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fc-buzplay: implement playt command for PWT melodies
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 30 May 2021 20:54:02 +0000
parents 158dd05fb9f9
children
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1 #include "types.h"
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2 #include "melody.h"
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3
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4 extern struct melentry *melody_buf_start, *melody_buf_tailptr;
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5 extern int melody_mode;
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6
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7 #define ARMIO_LOAD_TIM (*(volatile u16 *) 0xFFFE4808)
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8 #define BUZZ_LIGHT_REG (*(volatile u16 *) 0xFFFE480E)
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9
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10 #define PWT_FRC_REG (*(volatile u8 *) 0xFFFE8800)
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11 #define PWT_VCR_REG (*(volatile u8 *) 0xFFFE8801)
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12
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13 void
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14 melody_play_bu()
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15 {
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16 struct melentry *p;
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17 int count;
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18
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19 wait_for_tdma_frame();
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20 for (p = melody_buf_start; p < melody_buf_tailptr; p++) {
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21 if (p->tone) {
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22 ARMIO_LOAD_TIM = p->tone;
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23 BUZZ_LIGHT_REG = 1;
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24 } else
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25 BUZZ_LIGHT_REG = 0;
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26 for (count = p->dur; count; count--)
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27 wait_for_tdma_frame();
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28 BUZZ_LIGHT_REG = 0;
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29 }
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30 }
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31
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32 void
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33 melody_play_pwt()
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34 {
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35 struct melentry *p;
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36 int count;
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37
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38 wait_for_tdma_frame();
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39 for (p = melody_buf_start; p < melody_buf_tailptr; p++) {
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40 PWT_FRC_REG = p->tone;
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41 PWT_VCR_REG = p->vol;
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42 for (count = p->dur; count; count--)
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43 wait_for_tdma_frame();
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44 PWT_VCR_REG = 0;
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45 }
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46 }
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47
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48 void
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49 melody_play()
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50 {
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51 switch (melody_mode) {
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52 case 1:
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53 melody_play_bu();
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54 return;
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55 case 2:
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56 melody_play_pwt();
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57 return;
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58 default:
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59 printf("ERROR: no melody entered\n");
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60 }
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61 }