63 lines
2.3 KiB
C
63 lines
2.3 KiB
C
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013-2016 The MicroPython-on-micro:bit Developers:
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* Damien P. George (@dpgeorge)
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* Nicholas H. Tollervey (@ntoll)
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* Matthew Else (@matthewelse)
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* Alan M. Jackson (@alanmjackson)
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* Mark Shannon (@markshannon)
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* Larry Hastings (@larryhastings)
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* Mariia Koroliuk (@marichkakorolyuk)
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* Andrew Mulholland (@gbaman)
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* Joe Glancy (@JoeGlancy)
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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 __MICROPY_INCLUDED_LIB_TICKER_H__
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#define __MICROPY_INCLUDED_LIB_TICKER_H__
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/*************************************
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* 62.5kHz (16µs cycle time) ticker.
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************************************/
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#include "nrf.h"
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typedef void (*callback_ptr)(void);
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typedef int32_t (*ticker_callback_ptr)(void);
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void ticker_init0(void);
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void ticker_start(void);
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void ticker_stop(void);
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int clear_ticker_callback(uint32_t index);
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int set_ticker_callback(uint32_t index, ticker_callback_ptr func, int32_t initial_delay_us);
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void ticker_register_low_pri_callback(callback_ptr callback);
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#define CYCLES_PER_MICROSECONDS 16
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#define MICROSECONDS_PER_TICK 16
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#define CYCLES_PER_TICK (CYCLES_PER_MICROSECONDS*MICROSECONDS_PER_TICK)
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// This must be an integer multiple of MICROSECONDS_PER_TICK
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#define MICROSECONDS_PER_MACRO_TICK 6000
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#define MILLISECONDS_PER_MACRO_TICK 6
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#endif // __MICROPY_INCLUDED_LIB_TICKER_H__
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