RASCSI/cpp/hal/systimer_raspberry.h

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//---------------------------------------------------------------------------
//
// SCSI Target Emulator RaSCSI Reloaded
// for Raspberry Pi
//
// Powered by XM6 TypeG Technology.
// Copyright (C) 2016-2020 GIMONS
// Copyright (C) 2022 akuker
//
// [ High resolution timer ]
//
//---------------------------------------------------------------------------
#pragma once
#include "systimer.h"
#include <stdint.h>
//===========================================================================
//
// System timer
//
//===========================================================================
class SysTimer_Raspberry : public PlatformSpecificTimer
{
public:
// Default constructor
SysTimer_Raspberry() = default;
// Default destructor
~SysTimer_Raspberry() override = default;
// Initialization
void Init() override;
// Get system timer low byte
uint32_t GetTimerLow() override;
// Get system timer high byte
uint32_t GetTimerHigh() override;
// Sleep for N nanoseconds
void SleepNsec(uint32_t nsec) override;
// Sleep for N microseconds
void SleepUsec(uint32_t usec) override;
private:
// System timer address
static volatile uint32_t *systaddr;
// ARM timer address
static volatile uint32_t *armtaddr;
// Core frequency
static volatile uint32_t corefreq;
};