clk.h
Go to the documentation of this file.
1 /*
2  * Copyright (C) 2021 Inria
3  *
4  * This file is subject to the terms and conditions of the GNU Lesser
5  * General Public License v2.1. See the file LICENSE in the top level
6  * directory for more details.
7  */
8 
18 #ifndef CLK_H
19 #define CLK_H
20 
21 #include <assert.h>
22 #include <stdint.h>
23 #include "periph_conf.h"
24 
25 #ifdef __cplusplus
26 extern "C" {
27 #endif
28 
34 static inline uint32_t coreclk(void) {
35 #if defined(CLOCK_CORECLOCK)
36  return CLOCK_CORECLOCK;
37 #else
38  extern uint32_t cpu_coreclk;
39  assert(cpu_coreclk != 0);
40  return cpu_coreclk;
41 #endif
42 }
43 
44 #ifdef __cplusplus
45 }
46 #endif
47 
48 #endif /* CLK_H */
CLOCK_CORECLOCK
#define CLOCK_CORECLOCK
Clock configuration.
Definition: periph_cpu.h:31
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:136
coreclk
static uint32_t coreclk(void)
Get the current system core clock frequency in Hz.
Definition: clk.h:34