181 lines
5.6 KiB
C
181 lines
5.6 KiB
C
/* -*- mode: c; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4; coding: utf-8 -*- */
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/************************************************************************************
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** **
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** mcHF QRP Transceiver **
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** K Atanassov - M0NKA 2014 **
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** **
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**---------------------------------------------------------------------------------**
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** **
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** File name: **
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** Description: Simple Timing Profiler **
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** Last Modified: **
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** Licence: GNU GPLv3 **
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************************************************************************************/
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#ifndef __PROFILING_H
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#define __PROFILING_H
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typedef enum {
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ProfileAudioInterrupt = 0,
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ProfileTP1,
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ProfileTP2,
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ProfileTP3,
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ProfileTP4,
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ProfileTP5,
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ProfileTP6,
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ProfileTP7,
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ProfileTP8,
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ProfileTP9,
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ProfileFreeDV,
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FreeDVTXUnderrun,
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EventProfileMax
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} ProfiledEventNames;
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typedef struct {
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uint32_t count;
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uint32_t start;
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uint32_t stop;
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uint64_t duration; // to get average divide duration by count
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} ProfilingTimedEvent;
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typedef struct {
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ProfilingTimedEvent event[EventProfileMax];
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} EventProfile_t;
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extern EventProfile_t eventProfile;
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#define PROFILE_EVENTS
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inline void profileEvent(const ProfiledEventNames pe) {
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#ifdef PROFILE_EVENTS
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if (pe<EventProfileMax) {
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eventProfile.event[pe].count++;
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}
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#endif
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}
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/***
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* How to use:
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* First start the cycle timer with profileTimeEventInit()
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* This resets the timer and makes it run.
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*
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* At any time call profileTimedEventStart(EventName)
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* to have the start being recorded
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* at the end of the event call profileTimedEventStop(EventName)
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* Duration of a single event should not be longer then 2^32 / clock frequency
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* i.e. ~25s @168 Mhz for a single event
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* total duration recorded should not be more than 2^64 cycles
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* which is quite a lot, i.e. there is no limit on that for the
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* average person in this universe
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*
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* Due to the approach multiple events can be recorded correctly but
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* outer events include the overhead of the calculation of the duration
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* only the innermost events are more or less accurate unless you time the profile functions and
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* remove the overhead later.
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*/
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void profileEventsTracePrint(void);
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//inline void profileTimedEventInit(void);
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//inline void profileTimedEventStart(const ProfiledEventNames pe);
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//inline void profileTimedEventStop(const ProfiledEventNames pe);
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//inline void profileTimedEventReset(const ProfiledEventNames pe);
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//inline ProfilingTimedEvent* profileTimedEventGet(const ProfiledEventNames pe);
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// INLINE IMPLEMENTATIONS
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#define DWT_CYCCNT ((volatile uint32_t *)0xE0001004)
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#define DWT_CONTROL ((volatile uint32_t *)0xE0001000)
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#define SCB_DEMCR ((volatile uint32_t *)0xE000EDFC)
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#define DWT_LAR ((volatile uint32_t *)0xE0001FB0)
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//inline void profileCycleCount_reset(void){
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static inline void profileCycleCount_reset(){
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*SCB_DEMCR |= 0x01000000;
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#ifdef STM32F7
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*DWT_LAR = 0xC5ACCE55; // <-- added unlock access to DWT (ITM, etc.)registers
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#endif
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*DWT_CYCCNT = 0; // reset the counter
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*DWT_CONTROL = 0;
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}
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//inline void profileCycleCount_start(void)
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static inline void profileCycleCount_start()
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{
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*DWT_CONTROL = *DWT_CONTROL | 1;
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}
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//inline void profileCycleCount_stop(void)
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static inline void profileCycleCount_stop(void)
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{
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*DWT_CONTROL = *DWT_CONTROL & ~1; //
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}
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//inline uint32_t profileCycleCount_get(void)
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static inline uint32_t profileCycleCount_get(void)
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{
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return *DWT_CYCCNT;
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}
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//inline void profileTimedEventInit(void)
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static inline void profileTimedEventInit(void)
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{
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profileCycleCount_reset();
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profileCycleCount_start();
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}
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//inline void profileTimedEventStart(const ProfiledEventNames pe)
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static inline void profileTimedEventStart(const ProfiledEventNames pe)
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{
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#ifdef PROFILE_EVENTS
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if (pe<EventProfileMax) {
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eventProfile.event[pe].start = profileCycleCount_get();
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}
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#endif
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}
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//inline void profileTimedEventStop(const ProfiledEventNames pe)
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static inline void profileTimedEventStop(const ProfiledEventNames pe)
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{
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#ifdef PROFILE_EVENTS
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uint32_t stop = profileCycleCount_get();
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if (pe<EventProfileMax) {
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eventProfile.event[pe].stop = stop;
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eventProfile.event[pe].count++;
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eventProfile.event[pe].duration += (eventProfile.event[pe].stop-eventProfile.event[pe].start);
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}
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#endif
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}
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//inline void profileTimedEventReset(const ProfiledEventNames pe)
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static inline void profileTimedEventReset(const ProfiledEventNames pe)
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{
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#ifdef PROFILE_EVENTS
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if (pe<EventProfileMax) {
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eventProfile.event[pe].start = 0;
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eventProfile.event[pe].stop = 0;
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eventProfile.event[pe].count = 0;
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eventProfile.event[pe].duration = 0;
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}
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#endif
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}
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//inline ProfilingTimedEvent* profileTimedEventGet(const ProfiledEventNames pe)
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static inline ProfilingTimedEvent* profileTimedEventGet(const ProfiledEventNames pe)
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{
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ProfilingTimedEvent* pe_ptr = NULL;
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#ifdef PROFILE_EVENTS
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if (pe<EventProfileMax) {
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pe_ptr = &eventProfile.event[pe];
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}
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#endif
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return pe_ptr;
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}
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#endif
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