Пример #1
0
void DS1307_GetTime(uint8_t* const Hour,
                    uint8_t* const Minute,
                    uint8_t* const Second)
{
#if defined(DUMMY_RTC)
	*Hour   = 1;
	*Minute = 1;
	*Second = 1;
	return;
#endif

	if (TWI_StartTransmission(DS1307_ADDRESS_WRITE, 10))
	{
		TWI_SendByte(DS1307_TIMEREG_START);

		TWI_StopTransmission();
	}

	DS1307_TimeRegs_t CurrentRTCTime;

	if (TWI_StartTransmission(DS1307_ADDRESS_READ, 10))
	{
		TWI_ReceiveByte(&CurrentRTCTime.Byte1.IntVal, false);
		TWI_ReceiveByte(&CurrentRTCTime.Byte2.IntVal, false);
		TWI_ReceiveByte(&CurrentRTCTime.Byte3.IntVal, true);

		TWI_StopTransmission();
	}

	*Second  = (CurrentRTCTime.Byte1.Fields.TenSec  * 10) + CurrentRTCTime.Byte1.Fields.Sec;
	*Minute  = (CurrentRTCTime.Byte2.Fields.TenMin  * 10) + CurrentRTCTime.Byte2.Fields.Min;
	*Hour    = (CurrentRTCTime.Byte3.Fields.TenHour * 10) + CurrentRTCTime.Byte3.Fields.Hour;
}
Пример #2
0
void DS1307_GetDate(uint8_t* const Day,
                    uint8_t* const Month,
                    uint8_t* const Year)
{
#if defined(DUMMY_RTC)
	*Day   = 1;
	*Month = 1;
	*Year  = 1;
	return;
#endif

	if (TWI_StartTransmission(DS1307_ADDRESS_WRITE, 10))
	{
		TWI_SendByte(DS1307_DATEREG_START);

		TWI_StopTransmission();
	}

	DS1307_DateRegs_t CurrentRTCDate;

	if (TWI_StartTransmission(DS1307_ADDRESS_READ, 10))
	{
		TWI_ReceiveByte(&CurrentRTCDate.Byte1.IntVal, false);
		TWI_ReceiveByte(&CurrentRTCDate.Byte2.IntVal, false);
		TWI_ReceiveByte(&CurrentRTCDate.Byte3.IntVal, true);

		TWI_StopTransmission();
	}

	*Day    = (CurrentRTCDate.Byte1.Fields.TenDay   * 10) + CurrentRTCDate.Byte1.Fields.Day;
	*Month  = (CurrentRTCDate.Byte2.Fields.TenMonth * 10) + CurrentRTCDate.Byte2.Fields.Month;
	*Year   = (CurrentRTCDate.Byte3.Fields.TenYear  * 10) + CurrentRTCDate.Byte3.Fields.Year;
}
Пример #3
0
void Output_data()
{
	//Set the IO-Pins for the analog Multiplexer
	PORTD = DeviceConfig[10];
	
	//Send the frequency and formdata to the AD9833
	SPI_Send2Byte(DeviceConfig[0], DeviceConfig[1]); //Controllregister
	SPI_Send2Byte(DeviceConfig[4], DeviceConfig[5]); //Freg, LSB
	SPI_Send2Byte(DeviceConfig[2], DeviceConfig[3]); //Freg, MSB

	//Send the TWI-Data, but only if device is responding.
	if (TWI_StartTransmission(DigiPoti, 1) == 0)
	{
		for (int i = 0; i < 4; i++)
		{
			int PotiWert = i + 6;
	
			TWI_SendByte(0x10 | i);
			TWI_SendByte(DeviceConfig[PotiWert]);
		}

		TWI_SendByte(0x78);
		TWI_SendByte(0x01);
		TWI_StopTransmission();
	}
	else
	{
		ReturnError(0x03);
	}
	return;
}
Пример #4
0
uint8_t TWI_WritePacket(const uint8_t SlaveAddress,
                        const uint8_t TimeoutMS,
                        const uint8_t* InternalAddress,
                        uint8_t InternalAddressLen,
                        const uint8_t* Buffer,
                        uint8_t Length)
{
	uint8_t ErrorCode;

	if ((ErrorCode = TWI_StartTransmission((SlaveAddress & TWI_DEVICE_ADDRESS_MASK) | TWI_ADDRESS_WRITE,
	                                       TimeoutMS)) == TWI_ERROR_NoError)
	{
		while (InternalAddressLen--)
		{
			if (!(TWI_SendByte(*(InternalAddress++))))
			{
				ErrorCode = TWI_ERROR_SlaveNAK;
				break;
			}
		}

		while (Length--)
		{
			if (!(TWI_SendByte(*(Buffer++))))
			{
				ErrorCode = TWI_ERROR_SlaveNAK;
				break;
			}
		}

		TWI_StopTransmission();
	}

	return ErrorCode;
}
Пример #5
0
void DS1307_SetDate(const uint8_t Day,
                    const uint8_t Month,
                    const uint8_t Year)
{
#if defined(DUMMY_RTC)
	return;
#endif

	DS1307_DateRegs_t CurrentRTCDate;
	CurrentRTCDate.Byte1.Fields.TenDay   = (Day / 10);
	CurrentRTCDate.Byte1.Fields.Day      = (Day % 10);
	CurrentRTCDate.Byte2.Fields.TenMonth = (Month / 10);
	CurrentRTCDate.Byte2.Fields.Month    = (Month % 10);
	CurrentRTCDate.Byte3.Fields.TenYear  = (Year / 10);
	CurrentRTCDate.Byte3.Fields.Year     = (Year % 10);

	if (TWI_StartTransmission(DS1307_ADDRESS_WRITE, 10))
	{
		TWI_SendByte(DS1307_DATEREG_START);
		TWI_SendByte(CurrentRTCDate.Byte1.IntVal);
		TWI_SendByte(CurrentRTCDate.Byte2.IntVal);
		TWI_SendByte(CurrentRTCDate.Byte3.IntVal);

		TWI_StopTransmission();
	}
}
Пример #6
0
void DS1307_SetTime(const uint8_t Hour,
                    const uint8_t Minute,
                    const uint8_t Second)
{
#if defined(DUMMY_RTC)
	return;
#endif

	DS1307_TimeRegs_t CurrentRTCTime;
	CurrentRTCTime.Byte1.Fields.TenSec  = (Second / 10);
	CurrentRTCTime.Byte1.Fields.Sec     = (Second % 10);
	CurrentRTCTime.Byte1.Fields.CH      = false;
	CurrentRTCTime.Byte2.Fields.TenMin  = (Minute / 10);
	CurrentRTCTime.Byte2.Fields.Min     = (Minute % 10);
	CurrentRTCTime.Byte3.Fields.TenHour = (Hour / 10);
	CurrentRTCTime.Byte3.Fields.Hour    = (Hour % 10);
	CurrentRTCTime.Byte3.Fields.TwelveHourMode = false;

	if (TWI_StartTransmission(DS1307_ADDRESS_WRITE, 10))
	{
		TWI_SendByte(DS1307_TIMEREG_START);
		TWI_SendByte(CurrentRTCTime.Byte1.IntVal);
		TWI_SendByte(CurrentRTCTime.Byte2.IntVal);
		TWI_SendByte(CurrentRTCTime.Byte3.IntVal);

		TWI_StopTransmission();
	}
}
Пример #7
0
uint8_t TWI_StartTransmission(TWI_t* const TWI,
                              const uint8_t SlaveAddress,
                              const uint8_t TimeoutMS)
{
	uint16_t TimeoutRemaining;

	TWI->MASTER.ADDR = SlaveAddress;

	TimeoutRemaining = (TimeoutMS * 100);
	while (TimeoutRemaining)
	{
		uint8_t status = TWI->MASTER.STATUS;

		if ((status & (TWI_MASTER_WIF_bm | TWI_MASTER_ARBLOST_bm)) == (TWI_MASTER_WIF_bm | TWI_MASTER_ARBLOST_bm))
		{
			TWI->MASTER.ADDR = SlaveAddress;
		}
		else if ((status & (TWI_MASTER_WIF_bm | TWI_MASTER_RXACK_bm)) == (TWI_MASTER_WIF_bm | TWI_MASTER_RXACK_bm))
		{
			TWI_StopTransmission(TWI);
			return TWI_ERROR_SlaveResponseTimeout;
		}
		else if (status & (TWI_MASTER_WIF_bm | TWI_MASTER_RIF_bm))
		{
			return TWI_ERROR_NoError;
		}

		_delay_us(10);
		TimeoutRemaining--;
	}

	if (!(TimeoutRemaining)) {
		if (TWI->MASTER.STATUS & TWI_MASTER_CLKHOLD_bm) {
			TWI_StopTransmission(TWI);
		}
	}

	return TWI_ERROR_BusCaptureTimeout;
}
Пример #8
0
uint8_t TWI_ReadPacket(TWI_t* const TWI,
                       const uint8_t SlaveAddress,
                       const uint8_t TimeoutMS,
                       const uint8_t* InternalAddress,
                       uint8_t InternalAddressLen,
                       uint8_t* Buffer,
                       uint16_t Length)
{
	uint8_t ErrorCode;

	if ((ErrorCode = TWI_StartTransmission(TWI, (SlaveAddress & TWI_DEVICE_ADDRESS_MASK) | TWI_ADDRESS_WRITE,
	                                       TimeoutMS)) == TWI_ERROR_NoError)
	{
		while (InternalAddressLen--)
		{
			if (!(TWI_SendByte(TWI, *(InternalAddress++))))
			{
				ErrorCode = TWI_ERROR_SlaveNAK;
				break;
			}
		}

		if ((ErrorCode = TWI_StartTransmission(TWI, (SlaveAddress & TWI_DEVICE_ADDRESS_MASK) | TWI_ADDRESS_READ,
		                                       TimeoutMS)) == TWI_ERROR_NoError)
		{
			while (Length--)
			{
				if (!(TWI_ReceiveByte(TWI, Buffer++, (Length == 0))))
				{
					ErrorCode = TWI_ERROR_SlaveNAK;
					break;
				}
			}
		}

		TWI_StopTransmission(TWI);
	}

	return ErrorCode;
}