kopia lustrzana https://github.com/eleccoder/raspi-pico-aprs-tnc
39 wiersze
1.3 KiB
C
39 wiersze
1.3 KiB
C
/*
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* Project 'raspi-pico-aprs-tnc'
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* Copyright (C) 2021-2023 Thomas Glau, DL3TG
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "aprs_pico.h"
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#include "pico/stdlib.h"
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int main()
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{
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// 48 kHz is used as a default by the underlying https://github.com/eleccoder/ax25-aprs-lib library
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// The PWM base frequency is expected to be 16 * SAMPLE_FREQ_IN_HZ
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const unsigned int SAMPLE_FREQ_IN_HZ = 48000u;
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const unsigned int TONE_FREQ_IN_HZ = 1000u;
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const uint16_t VOLUME = 128u; // 0 ... 256
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stdio_init_all();
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audio_buffer_pool_t* audio_buffer_pool = aprs_pico_init();
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aprs_pico_send_sine_wave(audio_buffer_pool, TONE_FREQ_IN_HZ, SAMPLE_FREQ_IN_HZ, VOLUME);
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return 0;
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}
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