TWI.h

Go to the documentation of this file.

 
#ifndef ATMEGA328P_DEFINITIONS_TWI_H
#define ATMEGA328P_DEFINITIONS_TWI_H
 
#include <stdint.h>
#include "Config.h"
#include "Pin.h"

namespace atmega328p
{
    namespace twi
    {
        enum class Prescaler : uint8_t
        {
            Divide1 = 1,   
            Divide4 = 4,   
            Divide16 = 16, 
            Divide64 = 64, 
        };

        enum class StatusCode : uint8_t
        {
            BusError = 0x00,                          
            StartTransmitted = 0x08,                  
            RepeatedStartTransmitted = 0x10,          
            AddressWriteAck = 0x18,                   
            AddressWriteNack = 0x20,                  
            DataWriteAck = 0x28,                      
            DataWriteNack = 0x30,                     
            ArbitrationLost = 0x38,                   
            AddressReadAck = 0x40,                    
            AddressReadNack = 0x48,                   
            DataReadAck = 0x50,                       
            DataReadNack = 0x58,                      
            OwnAddressWriteAck = 0x60,                
            ArbitrationLostOwnAddressWriteAck = 0x68, 
            GeneralCallAck = 0x70,                    
            ArbitrationLostGeneralCallAck = 0x78,     
            OwnAddressDataAck = 0x80,                 
            OwnAddressDataNack = 0x88,                
            GeneralCallDataAck = 0x90,                
            GeneralCallDataNack = 0x98,               
            StopOrRepeatedStartReceived = 0xA0,       
            OwnAddressReadAck = 0xA8,                 
            ArbitrationLostOwnAddressReadAck = 0xB0,  
            OwnAddressReadDataAck = 0xB8,             
            OwnAddressReadDataNack = 0xC0,            
            LastDataByteAck = 0xC8,                   
            NoRelevantStateInformation = 0xF8,        
        };
 
        enum : uint8_t
        {
            module_count = 1U,                                   
            address_bits = 7U,                                   
            address_count = 128U,                                
            prescaler_count = 4U,                                
            sda_pin_value = 0x14U,                               
            scl_pin_value = 0x15U,                               
            supports_master = 1,                                 
            supports_slave = 1,                                  
            supports_multi_master_arbitration = 1,               
            supports_general_call = 1,                           
            cpu_clock_must_exceed_max_of_16x_scl_and_250khz = 1, 
        };

        enum : uint16_t
        {
            min_cpu_clocks_per_scl_in_slave_mode = 16U, 
        };
 
        enum : uint32_t
        {
            min_cpu_clock_hz = 250000UL,     
            standard_mode_max_hz = 100000UL, 
            fast_mode_max_hz = 400000UL,     
        };
    }
}
 
#endif