kopia lustrzana https://github.com/RPiks/pico-hf-oscillator
+GPStime sketch and proto-structs.
roman
rodzic
494ca2fb2f
commit
c5f63751bd
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@ -34,6 +34,7 @@ pico_generate_pio_header(pico-hf-oscillator-test ${CMAKE_CURRENT_LIST_DIR}/piodc
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target_sources(pico-hf-oscillator-test PUBLIC
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${CMAKE_CURRENT_LIST_DIR}/lib/assert.c
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${CMAKE_CURRENT_LIST_DIR}/piodco/piodco.c
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${CMAKE_CURRENT_LIST_DIR}/gpstime/GPStime.c
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${CMAKE_CURRENT_LIST_DIR}/test.c
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)
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Plik binarny nie jest wyświetlany.
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Po Szerokość: | Wysokość: | Rozmiar: 344 KiB |
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@ -0,0 +1,96 @@
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///////////////////////////////////////////////////////////////////////////////
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//
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// Roman Piksaykin [piksaykin@gmail.com], R2BDY, PhD
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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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// gpstime.h - GPS time reference utilities for digital controlled radio freq
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// oscillator based on Raspberry Pi Pico.
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//
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// DESCRIPTION
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//
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// GPS time utilities for PioDco oscillator provides a precise reference
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// frequency in order to obtain an absolute accuracy of PioDco. The value of
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// this accuracy depends on quality of navigation solution of GPS receiver.
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// This quality can be estimated by GDOP (geometric dilution of precision) and
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// TDOP (time dilution of precision) received in NMEA-0183 message packet from
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// GPS receiver.
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// The Pico's frequency error due to drift of its CLK oscillator is
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// calculated by that utilities and is used to shift PioDco frequency to
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// compensate the drift. So, the absolute frequency value which we possess
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// on the GPIO pin is supposed to be much more accurate when using GPS time
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// utilities.
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// Owing to the meager PioDco frequency step in millihertz range, we obtain
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// a quasi-analog precision frequency source.
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// This is an experimental project of amateur radio class and it is devised
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// by me on the free will base in order to experiment with QRP narrowband
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// digital modes including extremely ones such as QRSS.
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// I gracefully appreciate any thoughts or comments on that matter.
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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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// Rev 0.1 25 Nov 2023 Initial release
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//
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// PROJECT PAGE
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// https://github.com/RPiks/pico-hf-oscillator
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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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#include "GPStime.h"
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GPStimeContext *GPStimeInit(int uart_id, int uart_baud, int pps_pio)
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{
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ASSERT_(0 == uart_id || 1 == uart_id);
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ASSERT_(uart_baud <= 115200);
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ASSERT_(pps_pio < 29);
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// Set up our UART with the required speed.
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uart_init(uart_id ? uart1 : uart0, uart_baud);
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// Set the TX and RX pins by using the function select on the GPIO
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// Set datasheet for more information on function select
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gpio_set_function(uart_id ? 8 : 12, GPIO_FUNC_UART);
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gpio_set_function(uart_id ? 9 : 13, GPIO_FUNC_UART);
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GPStimeContext *pgt = calloc(1, sizeof(GPStimeContext));
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ASSERT_(pgt);
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pgt->_uart_id = uart_id;
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pgt->_uart_baudrate = uart_baud;
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pgt->_pps_pio = pps_pio;
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}
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void GPStimeDestroy(GPStimeContext **pp)
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{
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ASSERT_(pp);
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ASSERT_(*pp);
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uart_deinit((*pp)->_uart_id ? uart1 : uart0);
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free(*pp);
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*pp = NULL;
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}
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@ -0,0 +1,104 @@
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///////////////////////////////////////////////////////////////////////////////
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//
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// Roman Piksaykin [piksaykin@gmail.com], R2BDY, PhD
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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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// gpstime.h - GPS time reference utilities for digital controlled radio freq
|
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// oscillator based on Raspberry Pi Pico.
|
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//
|
||||
// DESCRIPTION
|
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//
|
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// GPS time utilities for PioDco oscillator provides a precise reference
|
||||
// frequency in order to obtain an absolute accuracy of PioDco. The value of
|
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// this accuracy depends on quality of navigation solution of GPS receiver.
|
||||
// This quality can be estimated by GDOP (geometric dilution of precision) and
|
||||
// TDOP (time dilution of precision) received in NMEA-0183 message packet from
|
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// GPS receiver.
|
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// The Pico's frequency error due to drift of its CLK oscillator is
|
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// calculated by that utilities and is used to shift PioDco frequency to
|
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// compensate the drift. So, the absolute frequency value which we possess
|
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// on the GPIO pin is supposed to be much more accurate when using GPS time
|
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// utilities.
|
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// Owing to the meager PioDco frequency step in millihertz range, we obtain
|
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// a quasi-analog precision frequency source.
|
||||
// This is an experimental project of amateur radio class and it is devised
|
||||
// by me on the free will base in order to experiment with QRP narrowband
|
||||
// digital modes including extremely ones such as QRSS.
|
||||
// I gracefully appreciate any thoughts or comments on that matter.
|
||||
//
|
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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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// Rev 0.1 25 Nov 2023 Initial release
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//
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// PROJECT PAGE
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// https://github.com/RPiks/pico-hf-oscillator
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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
|
||||
// in the Software without restriction,including without limitation the rights
|
||||
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
// copies of the Software, and to permit persons to whom the Software is
|
||||
// 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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// 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,
|
||||
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
// 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 GPSTIME_H_
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#define GPSTIME_H_
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "pico/stdlib.h"
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#include "hardware/uart.h"
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#include "../lib/assert.h"
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#define ASSERT_(x) assert_(x)
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typedef struct
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{
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uint32_t _tm_unix_last;
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float _flt_lat_deg, _flt_lon_deg;
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float _flt_GDOP, _flt_TDOP;
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} GPStimeData;
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typedef struct
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{
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int _uart_id;
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int _uart_baudrate;
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int _pps_pio;
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GPStimeData _time_data;
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uint8_t _pbytebuff[256];
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uint8_t _is_sentence_ready;
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} GPStimeContext;
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GPStimeContext *GPStimeInit(int uart_id, int uart_baud, int pps_pio);
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void GPStimeDestroy(GPStimeContext **pp);
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void GPStimeTick(GPStimeContext *pg);
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#endif
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