esp-idf/components/freertos/xtensa_init.c

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--------------------------------------------------------------------------------

        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_ESP32S2BETA
#include "esp32s2beta/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 */