blob: 402e97f2141b780a32103dedb087cb85dd62d76c [file] [log] [blame]
/*
* Copyright (c) 2020 Intel Corporation.
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/arch/arm/arch.h>
#include <zephyr/kernel.h>
#include <zephyr/sys_clock.h>
#include <zephyr/timing/timing.h>
#include <nrfx.h>
#if defined(CONFIG_NRF_RTC_TIMER)
#define CYCLES_PER_SEC (16000000 / (1 << NRF_TIMER2->PRESCALER))
void soc_timing_init(void)
{
NRF_TIMER2->TASKS_CLEAR = 1; /* Clear Timer */
NRF_TIMER2->MODE = 0; /* Timer Mode */
NRF_TIMER2->PRESCALER = 0; /* 16M Hz */
#if defined(CONFIG_SOC_SERIES_NRF51X)
NRF_TIMER2->BITMODE = 0; /* 16 - bit */
#else
NRF_TIMER2->BITMODE = 3; /* 32 - bit */
#endif
}
void soc_timing_start(void)
{
NRF_TIMER2->TASKS_START = 1;
}
void soc_timing_stop(void)
{
NRF_TIMER2->TASKS_STOP = 1; /* Stop Timer */
}
timing_t soc_timing_counter_get(void)
{
NRF_TIMER2->TASKS_CAPTURE[0] = 1;
return NRF_TIMER2->CC[0] * ((SystemCoreClock) / CYCLES_PER_SEC);
}
uint64_t soc_timing_cycles_get(volatile timing_t *const start,
volatile timing_t *const end)
{
#if defined(CONFIG_SOC_SERIES_NRF51X)
#define COUNTER_SPAN BIT(16)
if (*end >= *start) {
return (*end - *start);
} else {
return COUNTER_SPAN + *end - *start;
}
#else
return (*end - *start);
#endif
}
uint64_t soc_timing_freq_get(void)
{
return SystemCoreClock;
}
uint64_t soc_timing_cycles_to_ns(uint64_t cycles)
{
return (cycles) * (NSEC_PER_SEC) / (SystemCoreClock);
}
uint64_t soc_timing_cycles_to_ns_avg(uint64_t cycles, uint32_t count)
{
return soc_timing_cycles_to_ns(cycles) / count;
}
uint32_t soc_timing_freq_get_mhz(void)
{
return (uint32_t)(soc_timing_freq_get() / 1000000);
}
#endif