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/*
* Copyright (C) 2014 Freie Universität Berlin
*
* This file is subject to the terms and conditions of the GNU Lesser General
* Public License v2.1. See the file LICENSE in the top level directory for more
* details.
*/
/**
* @ingroup cpu_stm32f4
* @{
*
* @file
* @brief Implementation of the kernels hwtimer interface
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
*
* @}
*/
#include "arch/hwtimer_arch.h"
#include "board.h"
#include "periph/timer.h"
#include "thread.h"
/**
* @brief Callback function that is given to the low-level timer
*
* @param[in] channel the channel of the low-level timer that was triggered
*/
void irq_handler(int channel);
/**
* @brief Hold a reference to the hwtimer callback
*/
void (*timeout_handler)(int);
void hwtimer_arch_init(void (*handler)(int), uint32_t fcpu)
{
timeout_handler = handler;
timer_init(HW_TIMER, 1, &irq_handler);
}
void hwtimer_arch_enable_interrupt(void)
{
timer_irq_enable(HW_TIMER);
}
void hwtimer_arch_disable_interrupt(void)
{
timer_irq_disable(HW_TIMER);
}
void hwtimer_arch_set(unsigned long offset, short timer)
{
timer_set(HW_TIMER, timer, offset);
}
void hwtimer_arch_set_absolute(unsigned long value, short timer)
{
timer_set_absolute(HW_TIMER, timer, value);
}
void hwtimer_arch_unset(short timer)
{
timer_clear(HW_TIMER, timer);
}
unsigned long hwtimer_arch_now(void)
{
return timer_read(HW_TIMER);
}
void irq_handler(int channel)
{
timeout_handler((short)(channel));
}