clk.h
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1 /*
2  * SPDX-FileCopyrightText: 2021 Inria
3  * SPDX-License-Identifier: LGPL-2.1-only
4  */
5 
6 #pragma once
7 
17 #include <assert.h>
18 #include <stdint.h>
19 #include "periph_conf.h"
20 
21 #ifdef __cplusplus
22 extern "C" {
23 #endif
24 
30 static inline uint32_t coreclk(void) {
31 #if defined(CLOCK_CORECLOCK)
32  return CLOCK_CORECLOCK;
33 #else
34  extern uint32_t cpu_coreclk;
35  assert(cpu_coreclk != 0);
36  return cpu_coreclk;
37 #endif
38 }
39 
40 #ifdef __cplusplus
41 }
42 #endif
43 
CLOCK_CORECLOCK
#define CLOCK_CORECLOCK
Clock configuration.
Definition: periph_cpu.h:28
assert.h
POSIX.1-2008 compliant version of the assert macro.
assert
#define assert(cond)
abort the program if assertion is false
Definition: assert.h:143
coreclk
static uint32_t coreclk(void)
Get the current system core clock frequency in Hz.
Definition: clk.h:30