cycle_counter.h

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/*
 * Support and FAQ: visit <a href="https://www.microchip.com/support/">Microchip Support</a>
 */
#ifndef _cycle_counter_h_
#define _cycle_counter_h_
 
#ifdef __cplusplus
extern "C" {
#endif
 
 
#include <compiler.h>


void portable_delay_cycles(unsigned long n);
 
/* Cortex-M7 is faster than Cortex-M3/M4/M0+ */
#ifdef __CM7_REV
 
#  define cpu_ms_2_cy(ms, f_cpu)  \
    (((uint64_t)(ms) * (f_cpu) + (uint64_t)(5.932e3 - 1ul)) / (uint64_t)5.932e3)
#  define cpu_us_2_cy(us, f_cpu)  \
    (((uint64_t)(us) * (f_cpu) + (uint64_t)(5.932e6 - 1ul)) / (uint64_t)5.932e6)
 
#else
 
#  define cpu_ms_2_cy(ms, f_cpu)  \
    (((uint64_t)(ms) * (f_cpu) + (uint64_t)(14e3 - 1ul)) / (uint64_t)14e3)
#  define cpu_us_2_cy(us, f_cpu)  \
    (((uint64_t)(us) * (f_cpu) + (uint64_t)(14e6 - 1ul)) / (uint64_t)14e6)
 
#endif
 
#define delay_cycles               portable_delay_cycles
 
#define cpu_delay_ms(delay, f_cpu) delay_cycles(cpu_ms_2_cy(delay, f_cpu))
#define cpu_delay_us(delay, f_cpu) delay_cycles(cpu_us_2_cy(delay, f_cpu))
 
 
#ifdef __cplusplus
}
#endif
 
#endif /* _cycle_counter_h_ */