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/*
* This file is part of the libopencm3_cpp_extensions project.
* hosted at http://github.com/thirdpin/libopencm3_cpp_extensions
*
* Copyright (C) 2016 Third Pin LLC
* Written by Anastasiia Lazareva <a.lazareva@thirdpin.ru>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
SYSTICK implementation, public interface
*/
#ifndef SYSTICK_API_H
#define SYSTICK_API_H
#include <libopencm3/cm3/systick.h>
#include <stdint.h>
#ifndef CM3CPP_CUSTOM_SYSTICK
extern "C" void sys_tick_handler(void);
#endif
extern "C" void delay_nop(uint32_t count);
namespace cm3cpp {
namespace systick {
void init(uint32_t system_core_freq, uint32_t div = 1000);
void deinit();
#ifndef CM3CPP_CUSTOM_SYSTICK
uint32_t get_counter();
void delay_systick(uint32_t ms);
class Counter
{
public:
enum Mode
{
CYCLE,
ONE_SHOT
};
Counter(Mode mode, uint32_t period);
void init(Mode mode, uint32_t period);
bool timeout();
bool start();
bool stop();
bool is_active() const;
void set_period(uint32_t const period) { _period = period; }
uint32_t period() const { return _period; }
private:
uint32_t _saved;
uint32_t _period;
Mode _mode;
bool _is_active;
};
#endif // CM3CPP_CUSTOM_SYSTICK
} // namespace systick
} // namespace cm3cpp
#endif
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