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Add busy loop code and make HighResTimer work on demand rather automatically or ifdefed

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jaby
2023-04-26 19:09:07 +02:00
parent a1ca69094e
commit 9dc25e469c
10 changed files with 131 additions and 133 deletions
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87
include/PSX/Timer/high_res_timer.hpp
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@@ -1,6 +1,7 @@
#ifndef __JABYENGINE_HIGH_RES_TIMER_HPP__
#define __JABYENGINE_HIGH_RES_TIMER_HPP__
#include "../jabyengine_defines.h"
#include <PSX/System/IOPorts/interrupt_io.hpp>
#include <PSX/System/IOPorts/timer_io.hpp>
namespace JabyEngine {
@@ -24,51 +25,57 @@ namespace JabyEngine {
}
};
#ifdef JABYENGINE_USE_HIGH_PERCISION_TIMER
class HighResTime {
public:
class TimeStamp {
private:
uint16_t counter_10ms_value;
uint16_t fraction;
constexpr TimeStamp(uint16_t counter_10ms_value, uint16_t fraction) : counter_10ms_value(counter_10ms_value), fraction(fraction) {
}
constexpr static size_t to_us(uint16_t counter_10ms_value, uint16_t fraction) {
return counter_10ms_value*(10*1000) + ((fraction/HighResTime::TicksFor100us)*100);
}
constexpr static size_t to_ms(uint16_t counter_10ms_value, uint16_t fraction) {
return counter_10ms_value*10 + (fraction/HighResTime::TicksFor1ms);
}
public:
constexpr size_t microseconds_to(const TimeStamp& end) const {
return TimeStamp::to_us((end.counter_10ms_value - this->counter_10ms_value), (end.fraction - this->fraction));
}
constexpr size_t milliseconds_to(const TimeStamp& end) const {
return TimeStamp::to_ms((end.counter_10ms_value - this->counter_10ms_value), (end.fraction - this->fraction));
}
friend class HighResTime;
};
class HighResTime {
public:
class TimeStamp {
private:
static constexpr uint16_t TicksFor100us = CPUTicks::ticks_per_us<uint16_t>(CPUTicks::Frequency_Hz_Div8, 100.0);
static constexpr uint16_t TicksFor1ms = CPUTicks::ticks_per_ms<uint16_t>(CPUTicks::Frequency_Hz_Div8, 1.0);
static constexpr uint16_t TicksFor10ms = CPUTicks::ticks_per_ms<uint16_t>(CPUTicks::Frequency_Hz_Div8, 10.0);
uint16_t counter_10ms_value;
uint16_t fraction;
static volatile uint16_t global_counter_10ms;
constexpr TimeStamp(uint16_t counter_10ms_value, uint16_t fraction) : counter_10ms_value(counter_10ms_value), fraction(fraction) {
}
constexpr static size_t to_us(uint16_t counter_10ms_value, uint16_t fraction) {
return counter_10ms_value*(10*1000) + ((fraction/HighResTime::TicksFor100us)*100);
}
constexpr static size_t to_ms(uint16_t counter_10ms_value, uint16_t fraction) {
return counter_10ms_value*10 + (fraction/HighResTime::TicksFor1ms);
}
public:
HighResTime() = delete;
~HighResTime() = delete;
static TimeStamp get_time_stamp() {
return TimeStamp(HighResTime::global_counter_10ms, Timer_IO::Counter2.get_current_value());
constexpr size_t microseconds_to(const TimeStamp& end) const {
return TimeStamp::to_us((end.counter_10ms_value - this->counter_10ms_value), (end.fraction - this->fraction));
}
constexpr size_t milliseconds_to(const TimeStamp& end) const {
return TimeStamp::to_ms((end.counter_10ms_value - this->counter_10ms_value), (end.fraction - this->fraction));
}
friend class HighResTime;
};
#endif //JABYENGINE_USE_HIGH_PERCISION_TIMER
private:
static constexpr uint16_t TicksFor100us = CPUTicks::ticks_per_us<uint16_t>(CPUTicks::Frequency_Hz_Div8, 100.0);
static constexpr uint16_t TicksFor1ms = CPUTicks::ticks_per_ms<uint16_t>(CPUTicks::Frequency_Hz_Div8, 1.0);
static constexpr uint16_t TicksFor10ms = CPUTicks::ticks_per_ms<uint16_t>(CPUTicks::Frequency_Hz_Div8, 10.0);
static volatile uint16_t global_counter_10ms;
public:
HighResTime() = delete;
~HighResTime() = delete;
static void enable() {
Interrupt::enable_irq(Interrupt::Timer2);
}
static void disable() {
Interrupt::disable_irq(Interrupt::Timer2);
}
static TimeStamp get_time_stamp() {
return TimeStamp(HighResTime::global_counter_10ms, Timer_IO::Counter2.get_current_value());
}
};
}
#endif //!__JABYENGINE_HIGH_RES_TIMER_HPP__