kopia lustrzana https://github.com/amedes/pico_tnc
142 wiersze
11 KiB
C
142 wiersze
11 KiB
C
/*
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Copyright (c) 2021, Kazuhisa Yokota, JN1DFF
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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* Neither the name of the <organization> nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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sine wave table for Bell202 FSK signal
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*/
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#define SYS_CLK_KHZ 132000
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#define BIT_CYCLE 440
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#define MARK_CYCLE 440
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#define SPACE_CYCLE 240
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#define MARK_TAB_LEN 807
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#define SPACE_TAB_LEN 640
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#define PHASE_CYCLE 6
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#define PWM_CYCLE 250
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static const uint16_t mark_tab[] = {
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0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xf9, 0xf9, 0xf9, 0xf9, 0xf8, 0xf8, 0xf8, 0xf8, 0xf7,
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0xf7, 0xf6, 0xf6, 0xf5, 0xf5, 0xf4, 0xf4, 0xf3, 0xf3, 0xf2, 0xf1, 0xf1, 0xf0, 0xef, 0xef, 0xee,
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0xed, 0xec, 0xec, 0xeb, 0xea, 0xe9, 0xe8, 0xe7, 0xe6, 0xe5, 0xe4, 0xe3, 0xe2, 0xe1, 0xe0, 0xdf,
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0xde, 0xdd, 0xdb, 0xda, 0xd9, 0xd8, 0xd7, 0xd5, 0xd4, 0xd3, 0xd2, 0xd0, 0xcf, 0xce, 0xcc, 0xcb,
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0xc9, 0xc8, 0xc6, 0xc5, 0xc4, 0xc2, 0xc1, 0xbf, 0xbe, 0xbc, 0xba, 0xb9, 0xb7, 0xb6, 0xb4, 0xb3,
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0xb1, 0xaf, 0xae, 0xac, 0xaa, 0xa9, 0xa7, 0xa5, 0xa4, 0xa2, 0xa0, 0x9f, 0x9d, 0x9b, 0x99, 0x98,
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0x96, 0x94, 0x92, 0x91, 0x8f, 0x8d, 0x8b, 0x89, 0x88, 0x86, 0x84, 0x82, 0x81, 0x7f, 0x7d, 0x7b,
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0x79, 0x78, 0x76, 0x74, 0x72, 0x71, 0x6f, 0x6d, 0x6b, 0x69, 0x68, 0x66, 0x64, 0x62, 0x61, 0x5f,
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0x5d, 0x5b, 0x5a, 0x58, 0x56, 0x55, 0x53, 0x51, 0x50, 0x4e, 0x4c, 0x4b, 0x49, 0x47, 0x46, 0x44,
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0x43, 0x41, 0x40, 0x3e, 0x3c, 0x3b, 0x39, 0x38, 0x36, 0x35, 0x34, 0x32, 0x31, 0x2f, 0x2e, 0x2c,
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0x2b, 0x2a, 0x28, 0x27, 0x26, 0x25, 0x23, 0x22, 0x21, 0x20, 0x1f, 0x1d, 0x1c, 0x1b, 0x1a, 0x19,
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0x18, 0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x10, 0x0f, 0x0e, 0x0e, 0x0d, 0x0c, 0x0b, 0x0b,
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0x0a, 0x09, 0x09, 0x08, 0x07, 0x07, 0x06, 0x06, 0x05, 0x05, 0x04, 0x04, 0x03, 0x03, 0x02, 0x02,
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0x02, 0x02, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02, 0x03, 0x03, 0x04, 0x04, 0x05,
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0x05, 0x06, 0x06, 0x07, 0x07, 0x08, 0x09, 0x09, 0x0a, 0x0b, 0x0b, 0x0c, 0x0d, 0x0e, 0x0e, 0x0f,
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0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1f, 0x20,
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0x21, 0x22, 0x23, 0x25, 0x26, 0x27, 0x28, 0x2a, 0x2b, 0x2c, 0x2e, 0x2f, 0x31, 0x32, 0x34, 0x35,
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0x36, 0x38, 0x39, 0x3b, 0x3c, 0x3e, 0x40, 0x41, 0x43, 0x44, 0x46, 0x47, 0x49, 0x4b, 0x4c, 0x4e,
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0x50, 0x51, 0x53, 0x55, 0x56, 0x58, 0x5a, 0x5b, 0x5d, 0x5f, 0x61, 0x62, 0x64, 0x66, 0x68, 0x69,
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0x6b, 0x6d, 0x6f, 0x71, 0x72, 0x74, 0x76, 0x78, 0x79, 0x7b, 0x7d, 0x7f, 0x81, 0x82, 0x84, 0x86,
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0x88, 0x89, 0x8b, 0x8d, 0x8f, 0x91, 0x92, 0x94, 0x96, 0x98, 0x99, 0x9b, 0x9d, 0x9f, 0xa0, 0xa2,
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0xa4, 0xa5, 0xa7, 0xa9, 0xaa, 0xac, 0xae, 0xaf, 0xb1, 0xb3, 0xb4, 0xb6, 0xb7, 0xb9, 0xba, 0xbc,
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0xbe, 0xbf, 0xc1, 0xc2, 0xc4, 0xc5, 0xc6, 0xc8, 0xc9, 0xcb, 0xcc, 0xce, 0xcf, 0xd0, 0xd2, 0xd3,
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0xd4, 0xd5, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdd, 0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5,
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0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xec, 0xed, 0xee, 0xef, 0xef, 0xf0, 0xf1, 0xf1, 0xf2,
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0xf3, 0xf3, 0xf4, 0xf4, 0xf5, 0xf5, 0xf6, 0xf6, 0xf7, 0xf7, 0xf8, 0xf8, 0xf8, 0xf8, 0xf9, 0xf9,
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0xf9, 0xf9, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xf9,
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0xf9, 0xf9, 0xf9, 0xf8, 0xf8, 0xf8, 0xf8, 0xf7, 0xf7, 0xf6, 0xf6, 0xf5, 0xf5, 0xf4, 0xf4, 0xf3,
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0xf3, 0xf2, 0xf1, 0xf1, 0xf0, 0xef, 0xef, 0xee, 0xed, 0xec, 0xec, 0xeb, 0xea, 0xe9, 0xe8, 0xe7,
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0xe6, 0xe5, 0xe4, 0xe3, 0xe2, 0xe1, 0xe0, 0xdf, 0xde, 0xdd, 0xdb, 0xda, 0xd9, 0xd8, 0xd7, 0xd5,
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0xd4, 0xd3, 0xd2, 0xd0, 0xcf, 0xce, 0xcc, 0xcb, 0xc9, 0xc8, 0xc6, 0xc5, 0xc4, 0xc2, 0xc1, 0xbf,
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0xbe, 0xbc, 0xba, 0xb9, 0xb7, 0xb6, 0xb4, 0xb3, 0xb1, 0xaf, 0xae, 0xac, 0xaa, 0xa9, 0xa7, 0xa5,
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0xa4, 0xa2, 0xa0, 0x9f, 0x9d, 0x9b, 0x99, 0x98, 0x96, 0x94, 0x92, 0x91, 0x8f, 0x8d, 0x8b, 0x89,
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0x88, 0x86, 0x84, 0x82, 0x81, 0x7f, 0x7d, 0x7b, 0x79, 0x78, 0x76, 0x74, 0x72, 0x71, 0x6f, 0x6d,
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0x6b, 0x69, 0x68, 0x66, 0x64, 0x62, 0x61, 0x5f, 0x5d, 0x5b, 0x5a, 0x58, 0x56, 0x55, 0x53, 0x51,
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0x50, 0x4e, 0x4c, 0x4b, 0x49, 0x47, 0x46, 0x44, 0x43, 0x41, 0x40, 0x3e, 0x3c, 0x3b, 0x39, 0x38,
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0x36, 0x35, 0x34, 0x32, 0x31, 0x2f, 0x2e, 0x2c, 0x2b, 0x2a, 0x28, 0x27, 0x26, 0x25, 0x23, 0x22,
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0x21, 0x20, 0x1f, 0x1d, 0x1c, 0x1b, 0x1a, 0x19, 0x18, 0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11,
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0x10, 0x0f, 0x0e, 0x0e, 0x0d, 0x0c, 0x0b, 0x0b, 0x0a, 0x09, 0x09, 0x08, 0x07, 0x07, 0x06, 0x06,
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0x05, 0x05, 0x04, 0x04, 0x03, 0x03, 0x02, 0x02, 0x02, 0x02, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x02,
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0x02, 0x02, 0x02, 0x03, 0x03, 0x04, 0x04, 0x05, 0x05, 0x06, 0x06, 0x07, 0x07, 0x08, 0x09, 0x09,
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0x0a, 0x0b, 0x0b, 0x0c, 0x0d, 0x0e, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
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0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x25, 0x26, 0x27, 0x28, 0x2a,
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0x2b, 0x2c, 0x2e, 0x2f, 0x31, 0x32, 0x34, 0x35, 0x36, 0x38, 0x39, 0x3b, 0x3c, 0x3e, 0x40, 0x41,
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0x43, 0x44, 0x46, 0x47, 0x49, 0x4b, 0x4c, 0x4e, 0x50, 0x51, 0x53, 0x55, 0x56, 0x58, 0x5a, 0x5b,
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0x5d, 0x5f, 0x61, 0x62, 0x64, 0x66, 0x68, 0x69, 0x6b, 0x6d, 0x6f, 0x71, 0x72, 0x74, 0x76, 0x78,
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0x79, 0x7b, 0x7d, 0x7f, 0x81, 0x82, 0x84, 0x86, 0x88, 0x89, 0x8b, 0x8d, 0x8f, 0x91, 0x92, 0x94,
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0x96, 0x98, 0x99, 0x9b, 0x9d, 0x9f, 0xa0, 0xa2, 0xa4, 0xa5, 0xa7, 0xa9, 0xaa, 0xac, 0xae, 0xaf,
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0xb1, 0xb3, 0xb4, 0xb6, 0xb7, 0xb9, 0xba,
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};
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static const uint16_t space_tab[] = {
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0xfa, 0xfa, 0xfa, 0xfa, 0xf9, 0xf9, 0xf8, 0xf8, 0xf7, 0xf7, 0xf6, 0xf5, 0xf4, 0xf3, 0xf2, 0xf0,
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0xef, 0xee, 0xec, 0xeb, 0xe9, 0xe8, 0xe6, 0xe4, 0xe2, 0xe0, 0xde, 0xdc, 0xda, 0xd8, 0xd5, 0xd3,
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0xd1, 0xce, 0xcc, 0xc9, 0xc6, 0xc4, 0xc1, 0xbe, 0xbc, 0xb9, 0xb6, 0xb3, 0xb0, 0xad, 0xaa, 0xa7,
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0xa4, 0xa1, 0x9d, 0x9a, 0x97, 0x94, 0x91, 0x8d, 0x8a, 0x87, 0x84, 0x80, 0x7d, 0x7a, 0x76, 0x73,
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0x70, 0x6d, 0x69, 0x66, 0x63, 0x60, 0x5d, 0x59, 0x56, 0x53, 0x50, 0x4d, 0x4a, 0x47, 0x44, 0x41,
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0x3f, 0x3c, 0x39, 0x36, 0x34, 0x31, 0x2e, 0x2c, 0x29, 0x27, 0x25, 0x22, 0x20, 0x1e, 0x1c, 0x1a,
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0x18, 0x16, 0x14, 0x12, 0x11, 0x0f, 0x0e, 0x0c, 0x0b, 0x0a, 0x08, 0x07, 0x06, 0x05, 0x04, 0x03,
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0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x02, 0x02,
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0x03, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x0a, 0x0b, 0x0c, 0x0e, 0x0f, 0x11, 0x12, 0x14, 0x16,
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0x18, 0x1a, 0x1c, 0x1e, 0x20, 0x22, 0x25, 0x27, 0x29, 0x2c, 0x2e, 0x31, 0x34, 0x36, 0x39, 0x3c,
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0x3e, 0x41, 0x44, 0x47, 0x4a, 0x4d, 0x50, 0x53, 0x56, 0x59, 0x5d, 0x60, 0x63, 0x66, 0x69, 0x6d,
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0x70, 0x73, 0x76, 0x7a, 0x7d, 0x80, 0x84, 0x87, 0x8a, 0x8d, 0x91, 0x94, 0x97, 0x9a, 0x9d, 0xa1,
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0xa4, 0xa7, 0xaa, 0xad, 0xb0, 0xb3, 0xb6, 0xb9, 0xbc, 0xbe, 0xc1, 0xc4, 0xc6, 0xc9, 0xcc, 0xce,
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0xd1, 0xd3, 0xd5, 0xd8, 0xda, 0xdc, 0xde, 0xe0, 0xe2, 0xe4, 0xe6, 0xe8, 0xe9, 0xeb, 0xec, 0xee,
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0xef, 0xf0, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf7, 0xf8, 0xf8, 0xf9, 0xf9, 0xfa, 0xfa, 0xfa,
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0xfa, 0xfa, 0xfa, 0xfa, 0xf9, 0xf9, 0xf8, 0xf8, 0xf7, 0xf7, 0xf6, 0xf5, 0xf4, 0xf3, 0xf2, 0xf0,
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0xef, 0xee, 0xec, 0xeb, 0xe9, 0xe8, 0xe6, 0xe4, 0xe2, 0xe0, 0xde, 0xdc, 0xda, 0xd8, 0xd5, 0xd3,
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0xd1, 0xce, 0xcc, 0xc9, 0xc6, 0xc4, 0xc1, 0xbe, 0xbc, 0xb9, 0xb6, 0xb3, 0xb0, 0xad, 0xaa, 0xa7,
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0xa4, 0xa1, 0x9d, 0x9a, 0x97, 0x94, 0x91, 0x8d, 0x8a, 0x87, 0x84, 0x80, 0x7d, 0x7a, 0x76, 0x73,
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0x70, 0x6d, 0x69, 0x66, 0x63, 0x60, 0x5d, 0x59, 0x56, 0x53, 0x50, 0x4d, 0x4a, 0x47, 0x44, 0x41,
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0x3f, 0x3c, 0x39, 0x36, 0x34, 0x31, 0x2e, 0x2c, 0x29, 0x27, 0x25, 0x22, 0x20, 0x1e, 0x1c, 0x1a,
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0x18, 0x16, 0x14, 0x12, 0x11, 0x0f, 0x0e, 0x0c, 0x0b, 0x0a, 0x08, 0x07, 0x06, 0x05, 0x04, 0x03,
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0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x02, 0x02,
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0x03, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x0a, 0x0b, 0x0c, 0x0e, 0x0f, 0x11, 0x12, 0x14, 0x16,
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0x18, 0x1a, 0x1c, 0x1e, 0x20, 0x22, 0x25, 0x27, 0x29, 0x2c, 0x2e, 0x31, 0x34, 0x36, 0x39, 0x3c,
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0x3f, 0x41, 0x44, 0x47, 0x4a, 0x4d, 0x50, 0x53, 0x56, 0x59, 0x5d, 0x60, 0x63, 0x66, 0x69, 0x6d,
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0x70, 0x73, 0x76, 0x7a, 0x7d, 0x80, 0x84, 0x87, 0x8a, 0x8d, 0x91, 0x94, 0x97, 0x9a, 0x9d, 0xa1,
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0xa4, 0xa7, 0xaa, 0xad, 0xb0, 0xb3, 0xb6, 0xb9, 0xbc, 0xbe, 0xc1, 0xc4, 0xc6, 0xc9, 0xcc, 0xce,
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0xd1, 0xd3, 0xd5, 0xd8, 0xda, 0xdc, 0xde, 0xe0, 0xe2, 0xe4, 0xe6, 0xe8, 0xe9, 0xeb, 0xec, 0xee,
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0xef, 0xf0, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf7, 0xf8, 0xf8, 0xf9, 0xf9, 0xfa, 0xfa, 0xfa,
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0xfa, 0xfa, 0xfa, 0xfa, 0xf9, 0xf9, 0xf8, 0xf8, 0xf7, 0xf7, 0xf6, 0xf5, 0xf4, 0xf3, 0xf2, 0xf0,
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0xef, 0xee, 0xec, 0xeb, 0xe9, 0xe8, 0xe6, 0xe4, 0xe2, 0xe0, 0xde, 0xdc, 0xda, 0xd8, 0xd5, 0xd3,
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0xd1, 0xce, 0xcc, 0xc9, 0xc6, 0xc4, 0xc1, 0xbe, 0xbc, 0xb9, 0xb6, 0xb3, 0xb0, 0xad, 0xaa, 0xa7,
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0xa4, 0xa1, 0x9d, 0x9a, 0x97, 0x94, 0x91, 0x8d, 0x8a, 0x87, 0x84, 0x80, 0x7d, 0x7a, 0x76, 0x73,
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0x70, 0x6d, 0x69, 0x66, 0x63, 0x60, 0x5d, 0x59, 0x56, 0x53, 0x50, 0x4d, 0x4a, 0x47, 0x44, 0x41,
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0x3f, 0x3c, 0x39, 0x36, 0x34, 0x31, 0x2e, 0x2c, 0x29, 0x27, 0x25, 0x22, 0x20, 0x1e, 0x1c, 0x1a,
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0x18, 0x16, 0x14, 0x12, 0x11, 0x0f, 0x0e, 0x0c, 0x0b, 0x0a, 0x08, 0x07, 0x06, 0x05, 0x04, 0x03,
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0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x02, 0x02,
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0x03, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x0a, 0x0b, 0x0c, 0x0e, 0x0f, 0x11, 0x12, 0x14, 0x16,
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0x18, 0x1a, 0x1c, 0x1e, 0x20, 0x22, 0x25, 0x27, 0x29, 0x2c, 0x2e, 0x31, 0x34, 0x36, 0x39, 0x3c,
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};
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static const uint16_t *phase_tab[2][PHASE_CYCLE] = {
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{ &space_tab[0], &space_tab[40], &space_tab[80], &space_tab[120], &space_tab[160], &space_tab[200], },
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{ &mark_tab[0], &mark_tab[73], &mark_tab[147], &mark_tab[220], &mark_tab[293], &mark_tab[367], },
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};
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