FreeCalypso > hg > freecalypso-tools
annotate target-utils/buzplayer/melplay.c @ 587:5b88ba62b9ae
doc/Rvinterf-tools: rvinterf -P option documented
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 03 Feb 2020 07:56:57 +0000 |
parents | 8a200d65c6a0 |
children | 158dd05fb9f9 |
rev | line source |
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buzplayer: play implemented
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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 |
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6 #define ARMIO_LOAD_TIM (*(volatile u16 *) 0xFFFE4808) |
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7 #define BUZZ_LIGHT_REG (*(volatile u16 *) 0xFFFE480E) |
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8 |
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9 void |
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10 melody_play() |
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11 { |
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12 struct melentry *p; |
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13 int count; |
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14 |
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15 wait_for_tdma_frame(); |
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16 for (p = melody_buf_start; p < melody_buf_tailptr; p++) { |
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17 if (p->tone) { |
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18 ARMIO_LOAD_TIM = p->tone; |
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19 BUZZ_LIGHT_REG = 1; |
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20 } else |
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21 BUZZ_LIGHT_REG = 0; |
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22 for (count = p->dur; count; count--) |
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23 wait_for_tdma_frame(); |
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24 BUZZ_LIGHT_REG = 0; |
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25 } |
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26 } |