esp-idf/components/freertos/xtensa/xtensa_init.c

/*******************************************************************************
// Copyright (c) 2003-2015 Cadence Design Systems, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
--------------------------------------------------------------------------------

        XTENSA INITIALIZATION ROUTINES CODED IN C

This file contains miscellaneous Xtensa RTOS-generic initialization functions
that are implemented in C.

*******************************************************************************/


#ifdef XT_BOARD
#include "xtensa/xtbsp.h"
#endif

#include "xtensa_rtos.h"
#include "sdkconfig.h"
#if CONFIG_IDF_TARGET_ESP32
#include "esp32/clk.h"
#elif CONFIG_IDF_TARGET_ESP32S2
#include "esp32s2/clk.h"
#endif

#ifdef XT_RTOS_TIMER_INT

unsigned _xt_tick_divisor = 0;  /* cached number of cycles per tick */

void _xt_tick_divisor_init(void)
{
    _xt_tick_divisor = esp_clk_cpu_freq() / XT_TICK_PER_SEC;
}

/* Deprecated, to be removed */
int xt_clock_freq(void)
{
    return esp_clk_cpu_freq();
}

#endif /* XT_RTOS_TIMER_INT */