pico-tracker/firmware/inc/xosc.h

47 wiersze
1.7 KiB
C

/*
* Functions for controlling and calibrating against the external oscillator
* Copyright (C) 2014 Richard Meadows <richardeoin>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy 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:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR 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 LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef XOSC_H
#define XOSC_H
#include "samd20.h"
enum xosc_measurement_t {
XOSC_MEASURE_OSC8M,
XOSC_MEASURE_TIMEPULSE,
};
struct osc8m_calibration_t {
uint8_t temperature;
uint8_t process;
};
typedef void (*measurement_result_t)(uint32_t result);
void xosc_init(void);
struct osc8m_calibration_t osc8m_get_calibration(void);
void osc8m_set_calibration(struct osc8m_calibration_t calib);
void measure_xosc(enum xosc_measurement_t measurement_t, measurement_result_t callback);
#endif /* XOSC_H */