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/* Copyright (C) 2020 NANDO authors
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3.
*/
#include "clock.h"
#include <stm32f10x.h>
bool is_external_clock_avail()
{
return (RCC->CR & RCC_CR_HSERDY) != RESET;
}