forcereboot.c

#include "soc/rtc_wdt.h"

void __attribute__((noreturn)) call_start_cpu0(void)
{
    rtc_wdt_protect_off();      //Disable RTC WDT write protection
    //Set stage 0 to trigger a system reset after 1000ms
    rtc_wdt_set_stage(RTC_WDT_STAGE0, RTC_WDT_STAGE_ACTION_RESET_RTC); // RTC_WDT_STAGE_ACTION_RESET_SYSTEM for regular reset.
    rtc_wdt_set_time(RTC_WDT_STAGE0, 4000);
    rtc_wdt_enable();           //Start the RTC WDT timer
    rtc_wdt_protect_on();       //Enable RTC WDT write protection
    while(1) {
        ets_delay_us(1000000);
        ets_printf("ENZO WAS HERE.\n");
    }
}