zephyr/boards/posix/native_posix/native_rtc.c

72 lines
1.7 KiB
C

/*
* Copyright (c) 2018 Oticon A/S
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* API to the native_posix (Real) Time Clock
*/
#include "native_rtc.h"
#include "hw_models_top.h"
#include "timer_model.h"
#include <arch/posix/posix_trace.h>
/**
* Return the (simulation) time in microseconds
* where clock_type is one of RTC_CLOCK_*
*/
uint64_t native_rtc_gettime_us(int clock_type)
{
if (clock_type == RTC_CLOCK_BOOT) {
return hwm_get_time();
} else if (clock_type == RTC_CLOCK_REALTIME) { /* RTC_CLOCK_REALTIME */
return hwtimer_get_simu_rtc_time();
} else if (clock_type == RTC_CLOCK_PSEUDOHOSTREALTIME) {
uint32_t nsec;
uint64_t sec;
hwtimer_get_pseudohost_rtc_time(&nsec, &sec);
return sec * 1000000UL + nsec / 1000U;
}
posix_print_error_and_exit("Unknown clock source %i\n",
clock_type);
return 0;
}
/**
* Similar to POSIX clock_gettime()
* get the simulation time split in nsec and seconds
* where clock_type is one of RTC_CLOCK_*
*/
void native_rtc_gettime(int clock_type, uint32_t *nsec, uint64_t *sec)
{
if (clock_type == RTC_CLOCK_BOOT || clock_type == RTC_CLOCK_REALTIME) {
uint64_t us = native_rtc_gettime_us(clock_type);
*nsec = (us % 1000000UL) * 1000U;
*sec = us / 1000000UL;
} else { /* RTC_CLOCK_PSEUDOHOSTREALTIME */
hwtimer_get_pseudohost_rtc_time(nsec, sec);
}
}
/**
* Offset the real time clock by a number of microseconds.
* Note that this only affects the RTC_CLOCK_REALTIME and
* RTC_CLOCK_PSEUDOHOSTREALTIME clocks.
*/
void native_rtc_offset(int64_t delta_us)
{
hwtimer_adjust_rtc_offset(delta_us);
}
/**
* Adjust the speed of the clock source by a multiplicative factor
*/
void native_rtc_adjust_clock(double clock_correction)
{
hwtimer_adjust_rt_ratio(clock_correction);
}