bawxBackendMacros.h

#pragma once
#include "bawxTypeMacros.h"

// one bit takes 4us to read/write
// quarterBit = number of CPU cycles in 1us
constexpr u32 _quarterBit = F_CPU / 1000000;	// 1/4 bit takes this number of
							// cycles to read/write
constexpr u32 _halfBit = _quarterBit * 2;	// 1/2 bit takes this number of
							// cycles to read/write
constexpr u32 _threeqBit = _quarterBit * 3;	// 3/4 bit takes this number of
							// cycles to read/write
constexpr u32 _oneBit = _quarterBit * 4;	// 1 bit takes this number of
							// cycles to read/write
constexpr u32 _twoBit = _oneBit * 2;		// 2 bits take this number of
							// cycles to read/write
u32 _tempCycle;					// temp var to store CPU cycle

							// record the current CPU cycle
							// (ARM_DWT_CYCCNT) = CPU Cycle count Register
#define markCycle() (_tempCycle = (ARM_DWT_CYCCNT))

							// number of CPU cycles elapsed
							// since markCycle() was recorded
#define elapsedCycles() ((ARM_DWT_CYCCNT) - _tempCycle)