--- /dev/null
+/*
+ * Copyright © 2010 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include "ao.h"
+
+__xdata uint8_t ao_audio_dma;
+__xdata uint8_t ao_audio_dma_done;
+__xdata uint8_t ao_audio_mutex;
+
+__code uint8_t ao_audio_sound[] = {
+ 125, 125, 125, 125, 125, 125, 125, 125, 125, 125, 126, 125, 125, 123, 123, 123,
+ 125, 125, 123, 123, 123, 125, 125, 123, 123, 125, 125, 125, 125, 125, 126, 126,
+ 128, 126, 126, 126, 126, 126, 126, 128, 128, 128, 128, 128, 128, 130, 130, 130,
+ 130, 131, 131, 131, 130, 130, 130, 128, 130, 128, 128, 128, 128, 128, 130, 130,
+ 130, 130, 131, 131, 130, 130, 128, 128, 130, 131, 130, 130, 130, 131, 133, 131,
+ 128, 128, 128, 131, 130, 130, 130, 130, 130, 130, 130, 130, 130, 130, 130, 128,
+ 130, 128, 126, 126, 126, 128, 128, 126, 128, 130, 128, 126, 126, 128, 128, 126,
+ 125, 125, 128, 128, 128, 128, 125, 128, 130, 130, 130, 128, 128, 126, 128, 126,
+ 126, 126, 125, 126, 128, 126, 126, 125, 125, 128, 130, 128, 123, 122, 123, 128,
+ 126, 123, 125, 126, 128, 128, 125, 123, 122, 123, 125, 125, 125, 125, 125, 126,
+ 126, 125, 123, 125, 128, 128, 126, 126, 125, 123, 123, 125, 126, 125, 125, 126,
+ 126, 126, 128, 128, 126, 126, 128, 130, 128, 128, 126, 126, 128, 126, 126, 126,
+ 126, 128, 130, 130, 128, 126, 125, 126, 130, 130, 128, 125, 126, 128, 130, 128,
+ 126, 125, 126, 130, 133, 131, 128, 126, 130, 131, 131, 128, 128, 130, 133, 133,
+ 133, 130, 130, 133, 134, 134, 133, 130, 131, 131, 131, 131, 130, 128, 128, 128,
+ 130, 128, 125, 125, 126, 130, 128, 125, 125, 126, 126, 126, 126, 125, 126, 125,
+ 130, 130, 128, 126, 126, 128, 128, 126, 126, 128, 126, 126, 128, 128, 130, 128,
+ 126, 128, 128, 131, 130, 130, 128, 128, 128, 125, 126, 126, 125, 125, 125, 125,
+ 125, 125, 126, 126, 126, 126, 125, 123, 123, 123, 125, 123, 123, 125, 125, 125,
+ 125, 125, 126, 126, 125, 123, 123, 126, 126, 128, 128, 128, 128, 128, 128, 128,
+ 131, 126, 126, 128, 130, 128, 128, 126, 126, 126, 126, 126, 126, 126, 126, 128,
+ 126, 126, 126, 126, 125, 125, 123, 125, 125, 125, 125, 125, 125, 125, 125, 126,
+ 126, 126, 126, 126, 126, 126, 126, 128, 128, 126, 126, 128, 130, 130, 131, 133,
+ 133, 131, 130, 130, 128, 128, 126, 128, 128, 128, 128, 130, 130, 131, 130, 131,
+ 131, 128, 131, 128, 130, 130, 130, 130, 130, 130, 131, 133, 133, 131, 131, 130,
+ 130, 131, 133, 131, 130, 130, 131, 134, 133, 130, 128, 126, 128, 130, 131, 131,
+ 128, 126, 128, 130, 128, 126, 125, 125, 125, 125, 126, 126, 126, 125, 125, 126,
+ 126, 125, 126, 126, 125, 125, 123, 125, 125, 125, 123, 123, 123, 123, 123, 123,
+ 123, 123, 123, 123, 125, 125, 126, 126, 125, 123, 123, 125, 125, 123, 123, 122,
+ 122, 122, 123, 126, 126, 125, 126, 126, 128, 126, 125, 126, 125, 126, 125, 126,
+ 126, 126, 128, 128, 126, 125, 125, 125, 126, 126, 130, 130, 130, 128, 128, 130,
+ 130, 126, 126, 125, 123, 123, 123, 125, 123, 122, 122, 120, 122, 125, 125, 125,
+ 123, 125, 126, 128, 128, 126, 128, 125, 126, 128, 130, 131, 130, 131, 131, 133,
+ 133, 130, 130, 131, 131, 131, 131, 133, 133, 134, 133, 133, 133, 131, 131, 130,
+ 131, 131, 131, 130, 128, 130, 130, 131, 131, 133, 131, 133, 131, 133, 133, 133,
+ 134, 134, 136, 134, 134, 134, 134, 133, 133, 133, 133, 131, 128, 128, 125, 120,
+ 119, 116, 112, 111, 108, 106, 106, 108, 109, 109, 109, 108, 106, 106, 106, 109,
+ 111, 114, 116, 120, 123, 125, 128, 131, 133, 136, 139, 139, 140, 139, 139, 137,
+ 137, 139, 140, 139, 137, 140, 142, 144, 145, 144, 142, 142, 142, 142, 142, 140,
+ 139, 139, 137, 137, 137, 136, 136, 136, 134, 133, 130, 128, 126, 125, 123, 120,
+ 116, 112, 108, 103, 98, 95, 91, 86, 83, 80, 77, 70, 66, 61, 61, 67,
+ 78, 95, 105, 117, 123, 130, 140, 145, 151, 161, 164, 161, 161, 159, 156, 156,
+ 156, 159, 161, 158, 159, 162, 162, 165, 169, 167, 165, 159, 153, 148, 142, 136,
+ 131, 125, 122, 120, 120, 122, 126, 130, 133, 137, 140, 144, 144, 140, 137, 130,
+ 125, 123, 119, 116, 114, 108, 101, 94, 89, 87, 86, 81, 75, 70, 64, 61,
+ 66, 83, 101, 126, 144, 153, 173, 184, 172, 162, 162, 151, 140, 134, 130, 128,
+ 123, 119, 126, 133, 134, 144, 151, 153, 158, 159, 162, 164, 158, 151, 145, 133,
+ 116, 105, 98, 95, 92, 95, 105, 109, 114, 122, 131, 142, 151, 155, 158, 159,
+ 156, 151, 150, 145, 139, 136, 137, 140, 142, 145, 151, 159, 162, 165, 165, 161,
+ 153, 139, 126, 114, 97, 81, 67, 55, 42, 31, 23, 19, 20, 25, 34, 50,
+ 66, 86, 117, 147, 169, 186, 184, 176, 172, 159, 153, 151, 147, 144, 137, 131,
+ 130, 128, 126, 136, 147, 158, 161, 159, 158, 156, 156, 156, 156, 151, 139, 128,
+ 119, 109, 108, 111, 112, 119, 125, 125, 130, 133, 134, 142, 145, 147, 148, 144,
+ 139, 134, 130, 123, 122, 119, 112, 105, 95, 89, 81, 77, 69, 55, 45, 44,
+ 55, 86, 128, 164, 189, 189, 170, 158, 147, 137, 148, 158, 159, 156, 140, 123,
+ 117, 116, 126, 145, 156, 159, 151, 137, 133, 136, 147, 161, 164, 156, 139, 117,
+ 101, 94, 94, 105, 116, 122, 123, 120, 119, 123, 131, 147, 162, 169, 169, 158,
+ 145, 136, 133, 137, 145, 144, 139, 131, 123, 123, 126, 134, 139, 136, 125, 114,
+ 101, 91, 81, 70, 61, 47, 30, 14, 0, 8, 44, 86, 126, 158, 161, 155,
+ 151, 144, 151, 172, 187, 198, 195, 175, 156, 140, 130, 137, 150, 158, 156, 140,
+ 123, 114, 116, 131, 147, 156, 162, 151, 136, 122, 114, 120, 131, 137, 145, 142,
+ 130, 122, 116, 119, 133, 144, 151, 147, 133, 120, 112, 117, 130, 142, 148, 145,
+ 134, 120, 112, 108, 108, 108, 105, 91, 72, 50, 33, 27, 33, 56, 89, 119,
+ 144, 156, 145, 139, 140, 139, 150, 165, 173, 178, 172, 158, 148, 140, 139, 147,
+ 155, 158, 156, 147, 139, 136, 136, 145, 153, 158, 153, 140, 130, 116, 108, 112,
+ 125, 134, 142, 140, 136, 133, 128, 133, 144, 153, 161, 162, 155, 145, 134, 133,
+ 137, 139, 139, 134, 123, 112, 105, 101, 105, 105, 105, 100, 89, 72, 58, 44,
+ 34, 34, 42, 58, 84, 111, 128, 134, 131, 131, 134, 131, 140, 155, 162, 172,
+ 172, 165, 159, 148, 145, 150, 150, 150, 148, 140, 133, 125, 120, 125, 131, 133,
+ 136, 130, 125, 117, 112, 117, 126, 133, 139, 142, 140, 137, 134, 136, 140, 147,
+ 147, 148, 140, 133, 126, 126, 131, 134, 139, 140, 137, 133, 125, 119, 116, 111,
+ 108, 101, 91, 75, 58, 41, 30, 28, 39, 66, 101, 131, 147, 145, 142, 140,
+ 136, 142, 159, 172, 179, 181, 172, 162, 148, 139, 140, 147, 150, 153, 148, 139,
+ 131, 125, 128, 136, 144, 150, 151, 144, 133, 122, 117, 123, 134, 142, 147, 147,
+ 144, 136, 130, 134, 144, 155, 162, 162, 155, 145, 137, 137, 140, 144, 147, 145,
+ 136, 123, 114, 106, 103, 100, 98, 94, 84, 66, 48, 31, 23, 30, 48, 84,
+ 123, 150, 158, 151, 147, 142, 133, 142, 158, 167, 173, 172, 159, 145, 131, 123,
+ 130, 136, 140, 145, 139, 126, 120, 117, 123, 133, 139, 145, 144, 131, 120, 111,
+ 108, 117, 130, 142, 145, 144, 136, 130, 126, 133, 148, 158, 161, 158, 144, 133,
+ 126, 126, 133, 140, 144, 142, 131, 122, 114, 109, 108, 105, 98, 91, 75, 56,
+ 39, 25, 20, 28, 52, 87, 126, 155, 165, 161, 156, 151, 142, 147, 161, 167,
+ 172, 169, 156, 142, 128, 122, 126, 136, 144, 148, 145, 136, 130, 131, 137, 144,
+ 151, 156, 156, 139, 123, 114, 108, 116, 128, 139, 148, 147, 137, 134, 133, 139,
+ 156, 165, 169, 165, 151, 136, 128, 125, 131, 139, 140, 137, 130, 122, 116, 109,
+ 105, 101, 97, 86, 70, 50, 31, 19, 17, 33, 67, 114, 158, 186, 184, 173,
+ 164, 144, 136, 148, 159, 165, 169, 156, 139, 123, 109, 114, 126, 139, 151, 153,
+ 145, 134, 133, 137, 147, 151, 155, 155, 144, 120, 98, 95, 94, 106, 126, 139,
+ 145, 142, 133, 134, 139, 148, 167, 175, 169, 155, 134, 119, 112, 114, 126, 137,
+ 140, 137, 131, 126, 123, 122, 119, 116, 108, 91, 69, 44, 22, 11, 13, 27,
+ 56, 98, 137, 170, 179, 169, 167, 161, 145, 151, 159, 158, 159, 153, 139, 131,
+ 120, 116, 128, 137, 145, 156, 156, 148, 148, 148, 153, 155, 151, 148, 142, 130,
+ 105, 95, 98, 105, 120, 136, 145, 150, 145, 142, 148, 156, 165, 175, 173, 159,
+ 139, 123, 114, 112, 119, 131, 144, 144, 140, 137, 133, 126, 122, 117, 109, 97,
+ 73, 50, 28, 13, 9, 20, 45, 91, 134, 173, 190, 179, 172, 169, 155, 147,
+ 159, 159, 156, 155, 134, 119, 112, 108, 119, 134, 145, 155, 159, 150, 147, 151,
+ 151, 158, 158, 150, 137, 122, 100, 89, 87, 95, 112, 131, 140, 144, 144, 139,
+ 140, 150, 162, 173, 172, 161, 140, 120, 109, 111, 117, 128, 139, 145, 145, 142,
+ 139, 136, 131, 126, 114, 98, 80, 58, 38, 20, 11, 11, 16, 33, 70, 109,
+ 148, 184, 189, 183, 184, 165, 144, 148, 148, 142, 145, 131, 116, 112, 106, 106,
+ 125, 140, 151, 167, 164, 153, 155, 155, 155, 156, 150, 137, 125, 101, 86, 89,
+ 87, 95, 125, 140, 144, 150, 148, 145, 155, 164, 172, 176, 165, 148, 133, 117,
+ 112, 122, 131, 142, 151, 155, 153, 151, 147, 142, 139, 126, 108, 91, 70, 48,
+ 28, 17, 13, 17, 25, 47, 86, 126, 170, 198, 198, 194, 187, 164, 145, 147,
+ 140, 136, 137, 123, 111, 111, 106, 114, 134, 150, 164, 173, 169, 161, 161, 156,
+ 153, 150, 140, 130, 112, 87, 69, 72, 86, 98, 112, 137, 151, 153, 148, 150,
+ 161, 170, 170, 173, 165, 142, 125, 116, 111, 117, 130, 140, 147, 151, 151, 153,
+ 153, 145, 139, 130, 109, 86, 67, 48, 31, 22, 14, 11, 17, 28, 56, 95,
+ 139, 184, 204, 197, 195, 181, 148, 139, 137, 134, 136, 134, 120, 112, 109, 105,
+ 119, 137, 153, 170, 175, 161, 151, 148, 139, 137, 137, 131, 122, 105, 80, 66,
+ 69, 86, 111, 125, 145, 164, 162, 155, 156, 164, 169, 169, 164, 156, 142, 122,
+ 114, 117, 126, 139, 155, 162, 162, 165, 161, 150, 140, 130, 120, 109, 89, 67,
+ 52, 36, 22, 14, 14, 22, 39, 70, 108, 153, 194, 208, 200, 198, 181, 151,
+ 144, 144, 140, 147, 144, 130, 125, 117, 112, 126, 144, 158, 172, 175, 159, 153,
+ 150, 142, 142, 142, 134, 123, 109, 84, 72, 72, 78, 100, 126, 142, 153, 164,
+ 167, 162, 162, 165, 165, 161, 150, 137, 125, 116, 114, 122, 136, 150, 161, 165,
+ 164, 162, 155, 147, 139, 128, 116, 100, 81, 61, 45, 28, 16, 11, 5, 9,
+ 25, 55, 91, 137, 186, 206, 204, 204, 192, 164, 148, 147, 142, 145, 145, 133,
+ 125, 117, 106, 108, 122, 134, 148, 158, 151, 148, 147, 139, 137, 140, 139, 133,
+ 123, 105, 87, 80, 77, 86, 100, 120, 137, 150, 161, 167, 170, 169, 167, 165,
+ 158, 147, 137, 133, 130, 133, 139, 145, 155, 159, 164, 165, 167, 161, 151, 140,
+ 126, 114, 101, 84, 67, 53, 38, 22, 9, 2, 2, 17, 41, 80, 125, 172,
+ 208, 215, 209, 204, 187, 165, 159, 158, 153, 153, 144, 130, 120, 111, 103, 111,
+ 126, 139, 151, 155, 148, 148, 148, 147, 150, 153, 148, 142, 130, 108, 94, 86,
+ 81, 86, 97, 111, 125, 134, 144, 161, 169, 169, 169, 169, 162, 151, 140, 136,
+ 140, 140, 145, 153, 159, 164, 169, 167, 162, 161, 150, 137, 126, 114, 98, 80,
+ 62, 44, 30, 17, 6, 0, 2, 9, 27, 58, 100, 144, 190, 212, 211, 206,
+ 195, 167, 147, 144, 137, 137, 139, 128, 119, 109, 95, 92, 103, 116, 131, 148,
+ 151, 153, 156, 150, 147, 148, 147, 142, 137, 120, 101, 87, 77, 72, 77, 89,
+ 100, 109, 123, 134, 151, 169, 175, 179, 181, 175, 159, 150, 144, 142, 145, 153,
+ 161, 167, 172, 169, 164, 161, 156, 150, 142, 134, 123, 111, 94, 75, 59, 45,
+ 36, 28, 22, 20, 20, 27, 47, 80, 117, 159, 198, 214, 211, 208, 189, 162,
+ 150, 144, 139, 148, 150, 144, 136, 123, 106, 101, 106, 117, 137, 151, 159, 164,
+ 162, 150, 140, 134, 131, 130, 128, 120, 109, 100, 86, 81, 81, 87, 100, 111,
+ 117, 130, 150, 162, 165, 173, 179, 181, 175, 165, 159, 156, 151, 148, 155, 162,
+ 169, 172, 170, 165, 161, 153, 140, 130, 122, 112, 100, 84, 70, 56, 45, 31,
+ 22, 19, 16, 17, 27, 44, 70, 105, 139, 175, 198, 203, 200, 192, 169, 151,
+ 142, 137, 144, 153, 155, 148, 139, 119, 106, 103, 103, 120, 134, 144, 148, 148,
+ 140, 130, 122, 117, 120, 123, 123, 119, 112, 101, 91, 84, 84, 87, 92, 98,
+ 105, 114, 134, 158, 169, 181, 190, 189, 183, 173, 165, 162, 165, 164, 170, 178,
+ 179, 173, 165, 158, 150, 147, 140, 133, 126, 119, 108, 95, 83, 72, 64, 55,
+ 44, 34, 25, 22, 20, 28, 48, 75, 106, 140, 178, 197, 200, 204, 195, 181,
+ 169, 164, 161, 165, 169, 162, 158, 144, 122, 106, 97, 98, 108, 120, 128, 140,
+ 147, 142, 136, 130, 125, 126, 126, 126, 126, 123, 111, 100, 89, 83, 81, 83,
+ 91, 101, 114, 125, 148, 170, 179, 187, 194, 192, 187, 179, 170, 169, 170, 169,
+ 172, 175, 173, 167, 159, 151, 145, 142, 133, 125, 122, 114, 105, 92, 81, 67,
+ 56, 45, 33, 28, 22, 19, 19, 27, 41, 64, 97, 126, 164, 195, 204, 208,
+ 208, 192, 169, 159, 150, 150, 156, 151, 147, 140, 125, 106, 97, 91, 94, 108,
+ 119, 131, 142, 144, 137, 131, 123, 116, 112, 112, 112, 114, 112, 106, 100, 94,
+ 92, 91, 95, 106, 122, 136, 147, 155, 162, 169, 172, 178, 187, 195, 200, 200,
+ 198, 190, 183, 175, 167, 164, 162, 161, 158, 156, 151, 142, 130, 116, 105, 94,
+ 86, 81, 75, 73, 69, 64, 56, 48, 42, 36, 36, 42, 53, 70, 94, 117,
+ 140, 167, 183, 187, 189, 187, 175, 164, 158, 153, 151, 153, 150, 148, 145, 133,
+ 122, 111, 105, 101, 105, 109, 116, 122, 123, 120, 116, 109, 108, 105, 103, 105,
+ 108, 109, 111, 111, 111, 114, 114, 116, 123, 131, 139, 148, 161, 172, 181, 189,
+ 194, 197, 195, 189, 183, 178, 172, 167, 165, 164, 165, 164, 161, 158, 155, 148,
+ 139, 131, 122, 112, 103, 92, 83, 70, 61, 53, 48, 45, 44, 42, 39, 39,
+ 41, 44, 53, 66, 87, 111, 133, 156, 178, 183, 181, 178, 164, 148, 142, 136,
+ 136, 144, 147, 147, 150, 142, 126, 119, 105, 97, 100, 100, 103, 111, 116, 114,
+ 112, 108, 100, 101, 103, 106, 116, 125, 134, 140, 147, 147, 142, 140, 140, 142,
+ 147, 150, 156, 162, 165, 164, 164, 167, 172, 179, 187, 197, 201, 203, 200, 190,
+ 181, 170, 161, 156, 156, 155, 151, 145, 134, 120, 105, 89, 78, 70, 67, 67,
+ 72, 75, 75, 73, 67, 61, 52, 48, 45, 52, 58, 70, 87, 103, 120, 134,
+ 148, 155, 155, 159, 156, 148, 148, 147, 147, 151, 153, 151, 150, 144, 130, 120,
+ 111, 103, 101, 103, 106, 111, 117, 119, 117, 117, 114, 112, 111, 114, 119, 125,
+ 133, 137, 140, 144, 144, 140, 137, 139, 140, 147, 156, 162, 170, 175, 175, 175,
+ 176, 178, 181, 187, 192, 194, 192, 187, 178, 170, 158, 150, 142, 139, 137, 134,
+ 130, 122, 111, 100, 87, 77, 69, 62, 62, 61, 62, 61, 58, 52, 44, 38,
+ 30, 27, 30, 39, 53, 72, 94, 114, 134, 151, 156, 158, 161, 156, 151, 151,
+ 153, 156, 162, 164, 164, 162, 153, 139, 128, 117, 109, 108, 108, 111, 120, 123,
+ 123, 123, 122, 117, 112, 112, 114, 122, 131, 140, 147, 153, 156, 155, 151, 148,
+ 145, 147, 150, 159, 172, 179, 183, 190, 192, 189, 186, 184, 186, 187, 189, 190,
+ 192, 187, 181, 172, 162, 153, 144, 136, 128, 122, 116, 106, 95, 84, 72, 59,
+ 52, 42, 36, 36, 33, 34, 33, 34, 31, 30, 30, 33, 42, 56, 73, 95,
+ 119, 139, 156, 167, 172, 172, 167, 159, 158, 155, 158, 164, 167, 170, 169, 164,
+ 150, 142, 128, 116, 112, 109, 109, 114, 117, 119, 119, 116, 111, 106, 105, 103,
+ 108, 117, 130, 140, 153, 161, 165, 167, 164, 161, 158, 159, 162, 167, 176, 181,
+ 184, 187, 187, 186, 181, 178, 175, 176, 176, 176, 176, 173, 169, 159, 150, 139,
+ 128, 119, 109, 101, 92, 83, 75, 66, 55, 45, 38, 31, 28, 28, 28, 31,
+ 33, 34, 38, 41, 44, 50, 62, 73, 92, 112, 131, 153, 170, 179, 186, 186,
+ 178, 172, 167, 164, 165, 170, 173, 176, 175, 167, 156, 142, 128, 116, 108, 105,
+ 105, 111, 117, 122, 125, 123, 120, 119, 116, 116, 120, 128, 140, 155, 167, 176,
+ 181, 181, 176, 172, 167, 164, 165, 170, 176, 183, 189, 192, 190, 187, 179, 173,
+ 169, 165, 162, 162, 161, 159, 156, 148, 140, 128, 116, 101, 89, 80, 72, 66,
+ 61, 56, 50, 45, 39, 31, 25, 23, 22, 23, 27, 33, 38, 45, 53, 61,
+ 72, 86, 103, 120, 140, 159, 172, 183, 187, 183, 176, 170, 162, 159, 161, 161,
+ 162, 167, 165, 161, 151, 137, 125, 114, 105, 100, 101, 106, 112, 120, 125, 125,
+ 123, 120, 117, 117, 120, 128, 139, 153, 165, 175, 184, 184, 183, 179, 173, 169,
+ 169, 172, 176, 183, 187, 189, 187, 184, 178, 169, 161, 155, 150, 148, 147, 147,
+ 145, 144, 136, 125, 112, 97, 84, 72, 62, 56, 55, 52, 48, 47, 42, 38,
+ 33, 30, 28, 28, 31, 34, 44, 53, 64, 75, 87, 101, 116, 130, 145, 158,
+ 169, 178, 184, 186, 186, 184, 181, 181, 179, 176, 178, 176, 175, 167, 159, 148,
+ 136, 126, 116, 109, 106, 106, 108, 112, 114, 117, 117, 119, 119, 123, 128, 134,
+ 144, 155, 167, 175, 181, 184, 187, 186, 183, 181, 178, 176, 176, 178, 178, 178,
+ 178, 175, 170, 165, 158, 150, 145, 140, 136, 134, 131, 128, 122, 114, 103, 91,
+ 78, 67, 58, 50, 44, 39, 36, 34, 33, 30, 27, 25, 25, 23, 27, 30,
+ 36, 45, 58, 72, 84, 101, 119, 136, 151, 164, 175, 184, 187, 189, 189, 187,
+ 187, 186, 187, 184, 184, 181, 175, 167, 156, 142, 131, 120, 112, 106, 103, 101,
+ 103, 106, 108, 109, 111, 111, 114, 117, 122, 131, 140, 153, 165, 176, 184, 190,
+ 194, 194, 192, 189, 184, 183, 181, 179, 178, 178, 178, 175, 172, 165, 159, 151,
+ 147, 137, 133, 130, 125, 122, 117, 111, 101, 92, 81, 70, 62, 55, 47, 42,
+ 39, 39, 38, 39, 39, 39, 41, 41, 42, 45, 48, 56, 64, 73, 84, 98,
+ 112, 126, 142, 156, 169, 179, 187, 190, 192, 192, 192, 192, 194, 195, 195, 195,
+ 190, 186, 176, 164, 151, 139, 128, 117, 109, 105, 101, 101, 101, 103, 106, 106,
+ 108, 108, 111, 114, 122, 131, 139, 151, 162, 173, 181, 187, 189, 189, 189, 187,
+ 186, 184, 181, 179, 176, 175, 172, 169, 162, 156, 148, 140, 131, 122, 114, 106,
+ 100, 95, 89, 83, 77, 70, 66, 59, 53, 48, 45, 44, 44, 45, 45, 50,
+ 53, 58, 59, 64, 67, 72, 75, 80, 84, 91, 98, 106, 116, 126, 137, 147,
+ 156, 162, 170, 172, 176, 178, 181, 183, 183, 186, 186, 187, 187, 184, 181, 176,
+ 170, 162, 153, 145, 137, 130, 125, 120, 119, 117, 117, 117, 117, 117, 116, 117,
+ 117, 122, 126, 131, 137, 142, 150, 155, 159, 164, 169, 172, 173, 173, 173, 173,
+ 173, 170, 169, 164, 159, 155, 151, 147, 140, 134, 128, 120, 111, 103, 97, 91,
+ 86, 81, 78, 75, 72, 69, 67, 64, 64, 62, 62, 66, 69, 72, 77, 83,
+ 89, 94, 98, 101, 105, 108, 109, 111, 112, 116, 120, 123, 128, 130, 134, 137,
+ 140, 144, 145, 147, 147, 148, 148, 148, 148, 150, 153, 155, 155, 155, 155, 155,
+ 155, 153, 151, 150, 150, 150, 151, 151, 151, 150, 150, 148, 147, 145, 144, 142,
+ 140, 139, 137, 134, 133, 131, 130, 128, 126, 126, 126, 126, 125, 125, 123, 123,
+ 123, 123, 123, 122, 122, 123, 123, 123, 123, 122, 122, 122, 122, 120, 119, 119,
+ 119, 117, 116, 114, 114, 112, 111, 109, 108, 106, 105, 105, 105, 103, 103, 101,
+ 101, 101, 103, 103, 103, 105, 106, 109, 111, 112, 116, 119, 122, 125, 125, 128,
+ 131, 133, 134, 137, 140, 144, 145, 147, 150, 151, 155, 155, 158, 159, 159, 161,
+ 161, 161, 162, 161, 159, 159, 158, 156, 153, 151, 150, 148, 145, 142, 139, 136,
+ 133, 130, 128, 126, 123, 122, 119, 117, 116, 114, 112, 112, 112, 112, 109, 111,
+ 111, 111, 111, 112, 112, 114, 116, 117, 119, 119, 122, 123, 125, 125, 126, 126,
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+ 147, 133, 125, 120, 119, 126, 130, 134, 137, 136, 131, 126, 126, 128, 130, 131,
+ 136, 137, 136, 131, 125, 119, 112, 109, 108, 111, 117, 123, 128, 133, 137, 140,
+ 139, 139, 144, 151, 158, 159, 161, 158, 147, 136, 131, 128, 128, 134, 142, 151,
+ 156, 161, 156, 148, 142, 134, 128, 123, 120, 120, 120, 116, 111, 105, 98, 95,
+ 94, 94, 97, 101, 109, 112, 114, 116, 109, 106, 101, 100, 98, 97, 97, 98,
+ 98, 95, 94, 95, 98, 105, 112, 123, 134, 147, 158, 167, 169, 169, 167, 162,
+ 155, 148, 142, 136, 136, 137, 137, 139, 139, 139, 136, 131, 128, 128, 130, 128,
+ 131, 133, 133, 131, 128, 125, 120, 119, 117, 116, 119, 123, 126, 131, 136, 139,
+ 144, 148, 155, 156, 159, 158, 158, 155, 145, 144, 139, 139, 140, 144, 147, 150,
+ 150, 147, 145, 142, 137, 130, 123, 119, 117, 112, 108, 105, 101, 97, 92, 89,
+ 89, 91, 91, 94, 97, 98, 100, 98, 100, 101, 100, 98, 95, 92, 89, 89,
+ 87, 87, 91, 97, 103, 111, 119, 128, 139, 151, 159, 164, 165, 162, 158, 150,
+ 144, 136, 134, 134, 137, 140, 142, 144, 142, 139, 134, 133, 128, 126, 126, 130,
+ 131, 131, 131, 130, 128, 125, 122, 119, 119, 120, 123, 130, 139, 151, 158, 162,
+ 164, 161, 156, 148, 144, 142, 142, 145, 151, 156, 159, 159, 155, 151, 147, 145,
+ 140, 139, 139, 140, 139, 134, 130, 122, 114, 105, 97, 91, 87, 86, 87, 92,
+ 95, 95, 94, 95, 94, 92, 92, 94, 98, 101, 105, 105, 105, 105, 100, 101,
+ 103, 106, 112, 120, 130, 139, 150, 158, 162, 164, 162, 158, 151, 147, 142, 139,
+ 137, 139, 140, 142, 142, 140, 137, 133, 131, 128, 125, 123, 123, 123, 125, 126,
+ 126, 126, 123, 122, 120, 119, 119, 120, 128, 137, 145, 153, 159, 162, 162, 158,
+ 151, 145, 140, 137, 139, 140, 145, 150, 153, 155, 153, 148, 142, 134, 130, 126,
+ 122, 120, 117, 114, 112, 108, 103, 97, 91, 86, 80, 78, 77, 78, 80, 81,
+ 83, 84, 86, 87, 89, 91, 91, 91, 94, 95, 100, 103, 108, 116, 122, 126,
+ 133, 137, 145, 151, 158, 161, 164, 164, 161, 156, 151, 145, 140, 139, 137, 137,
+ 137, 139, 139, 140, 140, 140, 137, 133, 131, 130, 128, 126, 128, 130, 133, 134,
+ 136, 139, 140, 145, 148, 150, 153, 155, 156, 158, 158, 159, 161, 161, 161, 159,
+ 158, 155, 151, 151, 150, 147, 144, 142, 139, 136, 131, 128, 123, 119, 114, 109,
+ 105, 100, 98, 95, 92, 89, 87, 86, 84, 84, 83, 81, 81, 83, 84, 86,
+ 87, 91, 94, 98, 100, 103, 108, 112, 117, 125, 134, 142, 148, 150, 148, 147,
+ 144, 139, 134, 131, 131, 136, 142, 145, 151, 153, 151, 148, 142, 134, 128, 123,
+ 120, 122, 126, 131, 136, 140, 144, 145, 144, 140, 136, 134, 133, 134, 137, 142,
+ 145, 150, 151, 153, 151, 151, 148, 145, 144, 142, 142, 140, 142, 140, 140, 139,
+ 136, 133, 130, 123, 119, 114, 111, 108, 105, 103, 100, 97, 95, 92, 91, 87,
+ 86, 89, 89, 91, 92, 95, 97, 98, 101, 100, 103, 103, 106, 109, 111, 114,
+ 119, 122, 125, 128, 130, 133, 133, 134, 136, 137, 137, 139, 140, 140, 140, 140,
+ 140, 140, 140, 140, 142, 140, 142, 142, 142, 142, 144, 145, 147, 147, 147, 148,
+ 148, 150, 151, 151, 153, 155, 156, 158, 158, 156, 155, 151, 150, 148, 147, 145,
+ 144, 144, 144, 142, 140, 137, 136, 134, 131, 128, 125, 122, 120, 116, 114, 111,
+ 109, 108, 105, 105, 103, 101, 100, 98, 97, 97, 97, 98, 100, 100, 101, 103,
+ 105, 105, 105, 105, 105, 105, 105, 106, 109, 111, 111, 112, 114, 117, 119, 120,
+ 119, 120, 120, 122, 122, 125, 126, 130, 133, 134, 137, 136, 136, 137, 137, 137,
+ 137, 139, 139, 139, 139, 139, 137, 140, 140, 140, 139, 139, 139, 137, 140, 137,
+ 139, 140, 140, 142, 140, 140, 139, 140, 139, 139, 137, 137, 137, 137, 137, 137,
+ 137, 137, 137, 137, 136, 134, 133, 130, 128, 125, 123, 123, 123, 122, 120, 117,
+ 116, 112, 112, 111, 109, 109, 108, 108, 108, 106, 106, 106, 108, 108, 106, 106,
+ 106, 108, 109, 112, 114, 119, 122, 123, 125, 128, 130, 131, 133, 133, 134, 136,
+ 140, 142, 145, 147, 147, 147, 145, 144, 142, 139, 137, 137, 139, 140, 139, 139,
+ 139, 137, 136, 131, 128, 125, 123, 123, 123, 125, 126, 128, 130, 130, 130, 128,
+ 126, 126, 130, 130, 131, 133, 133, 133, 133, 131, 130, 130, 128, 126, 126, 126,
+ 126, 126, 125, 123, 120, 119, 116, 112, 111, 109, 109, 109, 111, 111, 111, 111,
+ 111, 111, 112, 111, 111, 111, 111, 114, 114, 116, 119, 120, 122, 123, 123, 125,
+ 126, 128, 130, 131, 133, 134, 134, 136, 136, 136, 134, 136, 136, 137, 139, 137,
+ 139, 137, 139, 137, 137, 137, 136, 136, 136, 136, 134, 134, 136, 134, 136, 137,
+ 137, 139, 137, 137, 136, 134, 133, 133, 131, 131, 131, 133, 133, 133, 134, 133,
+ 134, 133, 133, 128, 128, 125, 123, 126, 125, 126, 126, 126, 125, 123, 123, 122,
+ 120, 120, 120, 120, 120, 120, 122, 122, 122, 123, 122, 122, 122, 122, 122, 123,
+ 125, 126, 126, 126, 126, 126, 126, 128, 128, 128, 128, 130, 131, 131, 131, 131,
+ 131, 131, 131, 133, 134, 134, 134, 134, 134, 133, 131, 131, 131, 133, 133, 133,
+ 133, 134, 136, 134, 134, 131, 133, 131, 130, 130, 128, 130, 128, 128, 126, 125,
+ 123, 122, 122, 120, 120, 122, 122, 122, 122, 120, 122, 120, 120, 119, 117, 117,
+ 117, 117, 117, 117, 117, 119, 120, 119, 119, 117, 119, 120, 120, 120, 120, 120,
+ 120, 122, 122, 122, 122, 122, 122, 122, 123, 125, 125, 126, 126, 125, 126, 126,
+ 126, 126, 128, 128, 131, 131, 133, 133, 133, 133, 134, 137, 134, 137, 137, 137,
+ 139, 137, 137, 137, 137, 137, 137, 139, 137, 137, 136, 136, 137, 136, 134, 134,
+ 131, 130, 130, 131, 131, 131, 131, 131, 128, 128, 126, 125, 123, 125, 125, 125,
+ 125, 126, 126, 126, 126, 126, 125, 125, 123, 122, 122, 122, 122, 122, 122, 122,
+ 123, 123, 123, 122, 122, 122, 123, 123, 122, 122, 122, 123, 125, 126, 125, 128,
+ 126, 126, 125, 123, 122, 122, 123, 125, 126, 128, 130, 131, 133, 133, 133, 131,
+ 131, 131, 131, 131, 131, 131, 133, 131, 133, 133, 133, 131, 130, 128, 128, 130,
+ 130, 131, 130, 130, 128, 128, 128, 126, 126, 126, 128, 128, 126, 126, 123, 123,
+ 123, 123, 123, 123, 125, 125, 125, 125, 125, 123, 123, 123, 123, 123, 125, 125,
+ 123, 123, 122, 122, 122, 122, 122, 122, 122, 122, 122, 122, 123, 123, 123, 122,
+ 123, 125, 125, 126, 126, 126, 126, 126, 128, 128, 130, 130, 130, 131, 131, 133,
+ 134, 134, 134, 134, 134, 134, 136, 136, 137, 137, 137, 137, 136, 136, 136, 134,
+ 134, 133, 131, 133, 133, 134, 134, 133, 133, 133, 133, 133, 133, 131, 128, 128,
+ 128, 130, 128, 130, 131, 130, 130, 128, 126, 125, 125, 125, 123, 123, 123, 125,
+ 125, 125, 125, 123, 123, 123, 125, 125, 125, 125, 125, 123, 123, 122, 122, 123,
+ 123, 125, 123, 123, 122, 122, 120, 120, 120, 120, 122, 123, 125, 125, 126, 126,
+ 125, 123, 123, 122, 123, 123, 123, 125, 126, 126, 128, 128, 128, 128, 128, 130,
+ 130, 130, 126, 130, 128, 130, 130, 128, 131, 128, 128, 126, 126, 126, 130, 130,
+ 130, 130, 128, 130, 130, 128, 128, 126, 126, 126, 126, 128, 126, 126, 125, 125,
+ 125, 126, 125, 125, 125, 125, 125, 123, 123, 123, 125, 126, 126, 126, 126, 128,
+ 128, 126, 125, 125, 125, 123, 125, 125, 125, 126, 126, 126, 128, 126, 126, 126,
+ 126, 126, 126, 128, 128, 131, 131, 131, 131, 131, 133, 131, 131, 131, 131, 133,
+ 133, 134, 133, 134, 134, 134, 134, 133, 134, 136, 136, 136, 136, 134, 134, 134,
+ 133, 133, 131, 133, 133, 131, 133, 130, 130, 130, 130, 131, 130, 128, 126, 126,
+ 126, 126, 126, 126, 128, 126, 125, 125, 123, 123, 123, 123, 125, 125, 123, 123,
+ 122, 120, 122, 123, 122, 123, 123, 125, 125, 125, 123, 123, 123, 123, 123, 123,
+ 123, 123, 123, 123, 125, 123, 125, 123, 125, 125, 123, 123, 123, 125, 125, 125,
+ 125, 254,
+};
+
+#define nop() _asm nop _endasm;
+
+static void
+ao_audio_delay(uint8_t n) {
+ while (--n != 0)
+ nop();
+}
+
+void
+ao_audio_send(__xdata uint8_t *samples, uint16_t nsamples) __reentrant
+{
+ ao_mutex_get(&ao_audio_mutex);
+
+ /*
+ * Turn on timer 4. Free running from 0 to 0xff, with P2_0
+ * on interval controlled by data written to T4CC0
+ */
+ T4CCTL0 = TxCCTLy_CMP_SET_UP_CLEAR_DOWN | TxCCTLy_CMP_MODE_ENABLE;
+ T4CC0 = 0x7f;
+ T4CCTL1 = 0;
+ T4CTL = TxCTL_DIV_1|TxCTL_START|TxCTL_CLR|TxCTL_MODE_FREE;
+ P2SEL = (P2SEL & ~P2SEL_SELP2_0_MASK) | P2SEL_SELP2_0_PERIPHERAL;
+
+ /*
+ * Turn on timer 3 to clock data to the PWM output
+ */
+ T3CCTL0 = TxCCTLy_CMP_SET_UP_CLEAR_DOWN|TxCCTLy_CMP_MODE_ENABLE;
+ T3CC0 = 17;
+ T3CTL = TxCTL_DIV_128|TxCTL_START|TxCTL_CLR|TxCTL_MODE_MODULO;
+ while (nsamples) {
+ uint16_t this_samples;
+
+ if ((this_samples = nsamples) > 0x1fff)
+ this_samples = 0x1fff;
+ /*
+ * Set up DMA from the samples to T4CC0, triggered by T3 CH0
+ */
+ ao_dma_set_transfer(ao_audio_dma,
+ samples,
+ &T4CC0XADDR,
+ this_samples,
+ DMA_CFG0_WORDSIZE_8 |
+ DMA_CFG0_TMODE_SINGLE |
+ DMA_CFG0_TRIGGER_T3_CH0,
+ DMA_CFG1_SRCINC_1 |
+ DMA_CFG1_DESTINC_0 |
+ DMA_CFG1_PRIORITY_HIGH);
+ samples += this_samples;
+ nsamples -= this_samples;
+ ao_dma_start(ao_audio_dma);
+
+ __critical while (!ao_audio_dma_done)
+ ao_sleep(&ao_audio_dma_done);
+ }
+
+ /* Turn the timers back off */
+ T3CTL = 0;
+ T4CTL = 0;
+
+ /* And pull the GPIO to ground */
+ P2_0 = 0;
+ P2SEL = (P2SEL & ~P2SEL_SELP2_0_MASK) | P2SEL_SELP2_0_GPIO;
+
+ ao_mutex_put(&ao_audio_mutex);
+}
+
+void
+ao_audio_test(void)
+{
+ ao_audio_send(CODE_TO_XDATA(ao_audio_sound), sizeof (ao_audio_sound));
+}
+
+__code struct ao_cmds ao_audio_cmds[] = {
+ { 'A', ao_audio_test, "A Audio system test" },
+ { 0, ao_audio_test, NULL },
+};
+
+void
+ao_audio_init(void)
+{
+ /* The audio amplifier is connected to P2_0, which can
+ * be hooked to timer 4 using configuration alternative 2
+ */
+ P2_0 = 0;
+ P2SEL = (P2SEL & ~P2SEL_SELP2_0_MASK) | P2SEL_SELP2_0_GPIO;
+ PERCFG = (PERCFG & ~PERCFG_T4CFG_ALT_MASK) | PERCFG_T4CFG_ALT_2;
+
+ /* Timer 3 is used to clock the DMA transfers from the audio data buffer
+ * to the timer 4
+ */
+ ao_audio_dma = ao_dma_alloc(&ao_audio_dma_done);
+ ao_cmd_register(&ao_audio_cmds[0]);
+}
projects / fw / altos / commitdiff