kopia lustrzana https://github.com/RPiks/pico-WSPR-tx
81 wiersze
2.6 KiB
C
81 wiersze
2.6 KiB
C
///////////////////////////////////////////////////////////////////////////////
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//
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// Roman Piksaykin [piksaykin@gmail.com], R2BDY
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// https://www.qrz.com/db/r2bdy
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//
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///////////////////////////////////////////////////////////////////////////////
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//
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//
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// TxChannel.h - Produces a time-accurate stream.
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// Invokes a `modulator` function.
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// DESCRIPTION
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// Receives data asynchronously. Calls low level modulator function
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// synchronously according to params.
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//
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// HOWTOSTART
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// -
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//
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// PLATFORM
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// Raspberry Pi pico.
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//
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// REVISION HISTORY
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// -
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//
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// PROJECT PAGE
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// https://github.com/RPiks/pico-WSPR-tx
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//
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// LICENCE
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// MIT License (http://www.opensource.org/licenses/mit-license.php)
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//
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// Copyright (c) 2023 by Roman Piksaykin
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//
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// Permission is hereby granted, free of charge,to any person obtaining a copy
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// of this software and associated documentation files (the Software), to deal
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// in the Software without restriction,including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY,WHETHER IN AN ACTION OF CONTRACT,TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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///////////////////////////////////////////////////////////////////////////////
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#ifndef BITEMITTER_H_
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#define BITEMITTER_H_
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#include <stdint.h>
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#include <stdlib.h>
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#include "hardware/clocks.h"
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#include "pico/stdlib.h"
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#include "../pico-hf-oscillator/lib/assert.h"
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#define FREQ_STEP_MILLIHERTZ 1465
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typedef struct
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{
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uint64_t _tm_future_call;
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uint32_t _bit_period_us;
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uint8_t _timer_alarm_num;
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uint8_t _u8byte_buffer[256];
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uint8_t _ix_input, _ix_output;
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int (*_pf_modulator)(uint32_t frq_step, uint8_t shift_val);
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int (*_pf_setPTT)(uint8_t bptt_state);
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} TxChannelContext;
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TxChannelContext *TxChannelInit(const uint32_t bit_period_us, uint8_t timer_alarm_num,
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void *pfmodulator);
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void __not_in_flash_func (TxChannelISR)(void);
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#endif
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