Clock.h

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#ifndef ATMEGA2560_DEFINITIONS_CLOCK_H
#define ATMEGA2560_DEFINITIONS_CLOCK_H
 
#include <stdint.h>
#include "Config.h"

namespace atmega2560
{
    namespace clock
    {
        enum class Source : uint8_t
        {
            ExternalClock = 0,        
            InternalCalibratedRC = 1, 
            Internal128kHzRC = 2,     
            LowFrequencyCrystal = 3,  
            CrystalOscillator = 4,    
        };

        enum class Domain : uint8_t
        {
            CPU = 0,               
            IO = 1,                
            Flash = 2,             
            ADC = 3,               
            AsynchronousTimer = 4, 
        };

        enum class SUTCode : uint8_t
        {
            SUT00 = 0, 
            SUT01 = 1, 
            SUT10 = 2, 
            SUT11 = 3, 
        };

        enum class CKSELCode : uint8_t
        {
            ExternalClock = 0x0,              
            Reserved = 0x1,                   
            InternalCalibratedRC = 0x2,       
            Internal128kHzRC = 0x3,           
            LowFrequencyCrystalOption0 = 0x4, 
            LowFrequencyCrystalOption1 = 0x5, 
            FullSwingCrystalOption0 = 0x6,    
            FullSwingCrystalOption1 = 0x7,    
            LowPowerCrystalOption0 = 0x8,     
            LowPowerCrystalOption1 = 0x9,     
            LowPowerCrystalOption2 = 0xA,     
            LowPowerCrystalOption3 = 0xB,     
            LowPowerCrystalOption4 = 0xC,     
            LowPowerCrystalOption5 = 0xD,     
            LowPowerCrystalOption6 = 0xE,     
            LowPowerCrystalOption7 = 0xF,     
        };

        enum class Prescaler : uint16_t
        {
            Divide1 = 1,     
            Divide2 = 2,     
            Divide4 = 4,     
            Divide8 = 8,     
            Divide16 = 16,   
            Divide32 = 32,   
            Divide64 = 64,   
            Divide128 = 128, 
            Divide256 = 256, 
        };

        enum : uint32_t
        {
            internal_calibrated_rc_hz = 8000000UL,     
            internal_128khz_rc_hz = 128000UL,          
            timer2_async_crystal_hz = 32768UL,         
            factory_default_oscillator_hz = 8000000UL, 
            factory_default_cpu_hz = 1000000UL,        
            standard_max_cpu_hz_at_4v5 = 16000000UL,   
            low_voltage_max_cpu_hz_at_2v7 = 8000000UL, 
            low_voltage_max_cpu_hz_at_1v8 = 2000000UL, 
        };
        enum : uint8_t
        {
            factory_default_divisor = 8, 
            system_prescaler_count = 9,  
        };
    }
}
 
#endif