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/*
* Copyright 2020 Birte Kristina Friesel
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "arch.h"
#include "driver/gpio.h"
#include "driver/stdout.h"
#include "driver/timer.h"
#include "driver/uptime.h"
#ifndef F_TIMER
#define F_TIMER 100000
#endif
volatile unsigned long int timer_val = 0;
void loop(void)
{
gpio.led_toggle(1);
kout << "Actual frequency: approx. " << timer_val << " Hz" << endl;
timer_val = 0;
}
int main(void)
{
arch.setup();
gpio.setup();
kout.setup();
#if F_TIMER > 999
timer.setup_khz(F_TIMER / 1000);
#else
timer.setup_hz(F_TIMER);
#endif
timer.start(1);
gpio.led_on(0);
kout << "Timer running at " << dec << F_TIMER << " Hz" << endl;
arch.idle_loop();
return 0;
}
ON_TIMER_INTERRUPT_head
gpio.led_toggle(0);
timer_val++;
ON_TIMER_INTERRUPT_tail
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