<root>
<document scada='0' schema='103' license='1,79829088,14T0PE' title='' description='' fcversion='655617' target='ARD.ATMEGA.Arduino Uno R3 PDIP' >
	<config data='' clkspd='16000000' simspd='0' usewdt='0' constif='0' commport='4' Use3V3='0' />
	<plugins >
		<dll_models enabled='1' />
	</plugins>
	<supplement use='0' head='' body='' />
	<debug >
		<watch expr='CheckCRC.crc' />
		<watch expr='CheckCRC.i' />
		<watch expr='CheckCRC.j' />
	</debug>
	<traces />
	<ghost >
		<FK2 >
			<data name='FK2D0' port='4294967295' pin='4294967295' />
			<data name='FK2D1' port='4294967295' pin='4294967295' />
			<data name='FK2D2' port='4294967295' pin='4294967295' />
			<data name='FK2D3' port='4294967295' pin='4294967295' />
			<data name='FK2D4' port='4294967295' pin='4294967295' />
			<data name='FK2D5' port='4294967295' pin='4294967295' />
			<data name='FK2D6' port='4294967295' pin='4294967295' />
			<data name='FK2D7' port='4294967295' pin='4294967295' />
			<data name='FK2D8' port='4294967295' pin='4294967295' />
			<data name='FK2D9' port='4294967295' pin='4294967295' />
			<data name='FK2D10' port='4294967295' pin='4294967295' />
			<data name='FK2D11' port='4294967295' pin='4294967295' />
			<data name='FK2D12' port='4294967295' pin='4294967295' />
			<data name='FK2D13' port='4294967295' pin='4294967295' />
			<data name='FK2D14' port='4294967295' pin='4294967295' />
			<data name='FK2D15' port='4294967295' pin='4294967295' />
			<data name='FK2A0' port='4294967295' pin='4294967295' />
			<data name='FK2A1' port='4294967295' pin='4294967295' />
			<data name='FK2A2' port='4294967295' pin='4294967295' />
			<data name='FK2A3' port='4294967295' pin='4294967295' />
			<data name='FK2A4' port='4294967295' pin='4294967295' />
			<data name='FK2A5' port='4294967295' pin='4294967295' />
		</FK2>
		<ICD >
			<data name='AnalogPrescaleValue' value='19' />
			<data name='DigitalSampleRate' value='100000' />
			<data name='BreakpointCount' value='8' />
			<data name='CallStackDepthCount' value='8' />
			<data name='ClockPort' value='3' />
			<data name='ClockPin' value='1' />
			<data name='DataPort' value='3' />
			<data name='DataPin' value='0' />
			<data name='UseDefaultPins' value='1' />
			<data name='WrapEnabled' value='1' />
			<data name='CommsDelayOverridden' value='0' />
			<data name='CommsDelay' value='11' />
			<data name='CalculatedCommsDelay' value='11' />
			<data name='AnalogEB2PrescaleValue' value='2' />
			<data name='DigitalEB2SampleRate' value='100000' />
		</ICD>
		<pins >
			<digital A='0' B='0' C='0' D='0' E='0' F='0' G='0' H='0' I='0' J='0' K='0' L='0' M='0' N='0' O='0' P='0' Q='0' R='0' S='0' T='0' U='0' V='0' W='0' X='0' Y='0' Z='0' />
			<analog A='0' B='0' C='0' D='0' E='0' F='0' G='0' H='0' I='0' J='0' K='0' L='0' M='0' N='0' O='0' P='0' Q='0' R='0' S='0' T='0' U='0' V='0' W='0' X='0' Y='0' Z='0' />
		</pins>
	</ghost>
	<components >
		<settings autoimg='0' center='1' unitscale='0' fixedscale='0' fixedx='25' fixedy='25' fixedz='25' headcode='0' />
		<definition guid='c2a63961-a0b8-4b31-aa8e-89d1a4ea1802' vstate='40' vmin='0' vmaj='1' srcleaf='' visiblename='' description='' category='' category2='' category3='' bIs2dOnly='0' bIs3dOnly='0' catenable='1' author='' manuname='' manucode='' sysinfo='0' keywords='' dynamic='1' scadaCompatible='0' embeddedCompatible='1' showmacros='1' iconpath='' />
		<component class_type='root' codename='ComponentRoot' panelId='-1' x='0' y='0' z='0' xsz='1' ysz='1' zsz='1' xang='0' yang='0' zang='0' xquat='0' yquat='0' zquat='0' wquat='1' visible='1' scadavisible='1' interactive='1' solid='1' layer='0' poslock='0' comp2dType='0' >
			<resources />
			<properties >
				<property name='Bus Settings' folder='I2C_Master1::property_1' hidden='0' >
					<property name='Channel' target='I2C_Master1::cal_i2c::CHANNEL' typeid='16' hidden='0' locked='0' info='Channel selection' filter='000Software
001Channel 1
' />
					<property name='Baud Select' target='I2C_Master1::cal_i2c::BAUD_LIST' typeid='16' hidden='0' locked='0' info='Baud rate option selector' filter='000Custom
001100KHz
002400KHz
0031MHz' />
					<property name='Baud Rate' target='I2C_Master1::cal_i2c::BAUD' typeid='14' hidden='0' locked='1' info='Baud rate to be used' />
					<property name='Stop Delay' target='I2C_Master1::cal_i2c::StopDel' typeid='7' hidden='0' locked='0' info='On older microcontroller devices there is a potential for the I2C hardware channel to lock up if there is not 
a 10ms delay between an I2C stop event and the next I2C start event.

Most modern microcontrollers will not have a problem so this property can be disabled to speed up the 
I2C communications. ' />
					<property name='Slew Rate Control' target='I2C_Master1::cal_i2c::SRC' typeid='16' hidden='0' locked='0' info='Slew Rate Control Enabled or Disabled' filter='000Disabled
001Enabled' />
					<property name='SMBus Inputs' target='I2C_Master1::cal_i2c::SMB' typeid='16' hidden='0' locked='0' info=' When Enabled input logic thresholds are compliant with SMBus specification' filter='000Disabled
001Enabled' />
					<property name='Clock Stretching' target='I2C_Master1::cal_i2c::ClockStretching' typeid='7' hidden='1' locked='0' info='Allows the clock signal to be stretched to help combat high capacitance on the SCL/SDA bus signals.
When setting the clock high the CAL code will wait for the clock to read as a high before continuing.
Can potentially cause lockups if pull up resistors are missing from the SDA / SCL signals.
Only compatible with Software I2C channels. ' />
				</property>
				<property name='Connections' folder='I2C_Master1::#0000000C' hidden='0' >
					<property name='SDA' target='I2C_Master1::cal_i2c::SDA' typeid='5' hidden='0' locked='1' info='Pin used for SDA (data signal)' />
					<property name='SDA Remap Pin' target='I2C_Master1::cal_i2c::SDAPins' typeid='16' hidden='1' locked='0' info='' filter='000$PORTC.0
001$PORTC.1
002$PORTC.2
003$PORTC.3
004$PORTC.4
005$PORTC.5
006$PORTC.6
007$PORTC.7
008$PORTB.0
009$PORTB.1
010$PORTB.2
011$PORTB.3
012$PORTB.4
013$PORTB.5
014$PORTB.6
015$PORTB.7' />
					<property name='SCL' target='I2C_Master1::cal_i2c::SCL' typeid='5' hidden='0' locked='1' info='Pin used for SCL (clock signal)' />
					<property name='SCL Remap Pin' target='I2C_Master1::cal_i2c::SCLPins' typeid='16' hidden='1' locked='0' info='' filter='000$PORTC.0
001$PORTC.1
002$PORTC.2
003$PORTC.3
004$PORTC.4
005$PORTC.5
006$PORTC.6
007$PORTC.7
008$PORTB.0
009$PORTB.1
010$PORTB.2
011$PORTB.3
012$PORTB.4
013$PORTB.5
014$PORTB.6
015$PORTB.7' />
				</property>
				<property name='AHT21 i2c address' target='AHT21_ADDRESS' typeid='21' hidden='0' locked='0' hexview='1' info='' />
			</properties>
			<values >
				<value target='I2C_Master1::cal_i2c::CHANNEL' data='001' />
				<value target='I2C_Master1::cal_i2c::BAUD_LIST' data='002' />
				<value target='I2C_Master1::cal_i2c::BAUD' data='400000' />
				<value target='I2C_Master1::cal_i2c::StopDel' data='1' />
				<value target='I2C_Master1::cal_i2c::SRC' data='000' />
				<value target='I2C_Master1::cal_i2c::SMB' data='000' />
				<value target='I2C_Master1::cal_i2c::ClockStretching' data='1' />
				<value target='I2C_Master1::cal_i2c::SDA' data='$PORTC.4' />
				<value target='I2C_Master1::cal_i2c::SDAPins' data='002' />
				<value target='I2C_Master1::cal_i2c::SCL' data='$PORTC.5' />
				<value target='I2C_Master1::cal_i2c::SCLPins' data='010' />
				<value target='AHT21_ADDRESS' data='56' />
			</values>
			<events />
			<apis />
			<variables >
				<variable public='0' >
					<def class_type='variable' name='false' type='b1' description='' isconst='1' isHidden='0' isinit='1' usrinit='0' setinit='0' />
				</variable>
				<variable public='0' >
					<def class_type='variable' name='aht21_data' type='u8' description='' isconst='0' isHidden='0' isinit='1' usrinit='&quot; 156,158,237,133,78,172,250 &quot;' setinit='{156,158,237,133,78,172,250}' >
						<array size='7' />
					</def>
				</variable>
				<variable public='0' >
					<def class_type='variable' name='AHT21_CMD_SOFTRESET' type='u8' description='' isconst='1' isHidden='0' isinit='1' usrinit='186' setinit='0xBA' />
				</variable>
				<variable public='0' >
					<def class_type='variable' name='AHT10_CMD_CALIBRATE' type='u8' description='' isconst='1' isHidden='0' isinit='1' usrinit='225' setinit='225' />
				</variable>
				<variable public='0' >
					<def class_type='variable' name='AHT_CMD_TRIGGER' type='u8' description='' isconst='1' isHidden='0' isinit='1' usrinit='172' setinit='172' />
				</variable>
				<variable public='0' >
					<def class_type='variable' name='AHT21_STATUS_CALIBRATED' type='u8' description='' isconst='1' isHidden='0' isinit='1' usrinit='8' setinit='8' />
				</variable>
				<variable public='0' >
					<def class_type='variable' name='AHT_STATUS_BUSY' type='u8' description='' isconst='1' isHidden='0' isinit='1' usrinit='128' setinit='128' />
				</variable>
				<variable public='0' >
					<def class_type='variable' name='true' type='b1' description='' isconst='1' isHidden='0' isinit='1' usrinit='1' setinit='1' />
				</variable>
			</variables>
			<macros >
				<macro >
					<flowline name='GetTempInt' description='Returns 10 x Temperature (avoiding floating point)' statediag='0' >
						<return name='Return' type='s16' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<local name='data' type='s32' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<command class_type='calculation' title='Calculation' cmdcolor='4206456' cmdcolor_sec='10785756' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' >
							<exp exp='.data = aht21_data[3] &amp; 0x0F' />
							<exp exp='.data = .data &lt;&lt; 8' />
							<exp exp='.data = .data | aht21_data[4]' />
							<exp exp='.data = .data &lt;&lt; 8' />
							<exp exp='.data = .data | aht21_data[5]' />
							<exp exp='.Return = ((.data * 2000) / 1048576) - 500' />
						</command>
					</flowline>
				</macro>
				<macro >
					<flowline name='i2cWord' description='' statediag='0' >
						<return name='Return' type='u8' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<param name='addr' type='u8' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<param name='data' type='u16' description='Writes word MSB, LSB' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<local name='x' type='u8' description='' isconst='0' isHidden='0' isinit='0' usrinit='&quot;&quot;' setinit='' >
							<array size='3' />
						</local>
						<command class_type='calculation' title='Calculation' cmdcolor='4206456' cmdcolor_sec='10785756' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' >
							<exp exp='.x[0] = .addr' />
							<exp exp='.x[1] = .data &gt;&gt; 8' />
							<exp exp='.x[2] = .data' />
						</command>
						<command class_type='call' title='Component Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' component='I2C_Master1' macro='Transaction_Write' >
							<argument exp='.x' />
							<argument exp='3' />
						</command>
					</flowline>
				</macro>
				<macro >
					<flowline name='ShowValue' description='' statediag='0' >
						<return name='Return' type='v0' description='' isconst='0' isHidden='0' isinit='0' usrinit='' setinit='' />
						<param name='desc' type='T8*' description='' isconst='0' isHidden='0' isinit='0' usrinit='&quot;&quot;' setinit='' >
							<array size='20' />
						</param>
						<param name='val' type='s16' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<param name='newline' type='b1' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<command class_type='call' title='Component Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' component='UART1' macro='SendString' >
							<argument exp='.desc' />
						</command>
						<command class_type='call' title='Component Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' component='UART1' macro='SendNumber' >
							<argument exp='.val' />
						</command>
						<command class_type='decision' title='Decision' cmdcolor='4767473' cmdcolor_sec='11337727' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' exp='.newline' swap='0' >
							<flowline >
								<command class_type='call' title='Component Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' component='UART1' macro='SendString' >
									<argument exp='&quot;\r\n&quot;' />
								</command>
							</flowline>
							<flowline />
						</command>
					</flowline>
				</macro>
				<macro >
					<flowline name='GetHumidityFloat' description='' statediag='0' >
						<return name='Return' type='f32' description='' isconst='0' isHidden='0' isinit='0' usrinit='0.0' setinit='' />
						<local name='data' type='u32' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<command class_type='calculation' title='Calculation' cmdcolor='4206456' cmdcolor_sec='10785756' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' >
							<exp exp='.data = aht21_data[1]' />
							<exp exp='.data = .data &lt;&lt; 8' />
							<exp exp='.data = .data | aht21_data[2]' />
							<exp exp='.data = .data &lt;&lt; 4' />
							<exp exp='.data = .data | (aht21_data[3] &gt;&gt; 4)' />
							<exp exp='.Return = (FLOAT .data * 100.0) / 1048576.0' />
						</command>
					</flowline>
				</macro>
				<macro >
					<flowline name='GetHumidityInt' description='' statediag='0' >
						<return name='Return' type='u16' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<local name='data' type='u32' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<command class_type='calculation' title='Calculation' cmdcolor='4206456' cmdcolor_sec='10785756' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' >
							<exp exp='.data = aht21_data[1]' />
							<exp exp='.data = .data &lt;&lt; 8' />
							<exp exp='.data = .data | aht21_data[2]' />
							<exp exp='.data = .data &lt;&lt; 4' />
							<exp exp='.data = .data | (aht21_data[3] &gt;&gt; 4)' />
							<exp exp='.Return = (.data * 100) / 1048576' />
						</command>
					</flowline>
				</macro>
				<macro >
					<flowline name='Sample' description='Sample the AHT21 - return 0 on success, else error code.' statediag='0' >
						<return name='Return' type='u8' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<param name='CRC' type='b1' description='Set to true to check CRC is correct' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<local name='x' type='u8' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<local name='n' type='u8' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<local name='crc_ok' type='u8' description='' isconst='0' isHidden='0' isinit='1' usrinit='1' setinit='true' />
						<command class_type='call' title='User Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' macro='i2cWord' >
							<return exp='.x' />
							<argument exp='AHT_CMD_TRIGGER' />
							<argument exp='0x3300' />
						</command>
						<command class_type='call' title='Component Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' component='I2C_Master1' macro='Transaction_Read' >
							<return exp='.n' />
							<argument exp='aht21_data' />
							<argument exp='6 + (.CRC == TRUE)' />
						</command>
						<command class_type='decision' title='Calculate the checksum' cmdcolor='4767473' cmdcolor_sec='11337727' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' exp='.CRC' swap='0' >
							<flowline >
								<command class_type='call' title='User Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' macro='CheckCRC' >
									<return exp='.crc_ok' />
								</command>
							</flowline>
							<flowline />
						</command>
						<command class_type='calculation' title='Calculation' cmdcolor='4206456' cmdcolor_sec='10785756' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' >
							<exp exp='.Return = (.n &gt;= 5) &amp;&amp; .crc_ok' />
						</command>
					</flowline>
				</macro>
				<macro >
					<flowline name='i2cByte' description='' statediag='0' >
						<return name='Return' type='u8' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<param name='val' type='u8' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<local name='data' type='u8' description='' isconst='0' isHidden='0' isinit='0' usrinit='&quot;&quot;' setinit='' >
							<array size='1' />
						</local>
						<command class_type='calculation' title='Calculation' cmdcolor='4206456' cmdcolor_sec='10785756' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' >
							<exp exp='.data[0] = .val' />
						</command>
						<command class_type='call' title='Component Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' component='I2C_Master1' macro='Transaction_Write' >
							<return exp='.Return' />
							<argument exp='.data' />
							<argument exp='1' />
						</command>
					</flowline>
				</macro>
				<macro >
					<flowline name='ShowValueFloat' description='' statediag='0' >
						<return name='Return' type='v0' description='' isconst='0' isHidden='0' isinit='0' usrinit='' setinit='' />
						<param name='desc' type='T8*' description='' isconst='0' isHidden='0' isinit='0' usrinit='&quot;&quot;' setinit='' >
							<array size='20' />
						</param>
						<param name='val' type='f32' description='' isconst='0' isHidden='0' isinit='0' usrinit='0.0' setinit='' />
						<param name='newline' type='b1' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<command class_type='call' title='Component Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' component='UART1' macro='SendString' >
							<argument exp='.desc' />
						</command>
						<command class_type='call' title='Component Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' component='UART1' macro='SendFloat' >
							<argument exp='.val' />
						</command>
						<command class_type='decision' title='Decision' cmdcolor='4767473' cmdcolor_sec='11337727' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' exp='.newline' swap='0' >
							<flowline >
								<command class_type='call' title='Component Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' component='UART1' macro='SendString' >
									<argument exp='&quot;\r\n&quot;' />
								</command>
							</flowline>
							<flowline />
						</command>
					</flowline>
				</macro>
				<macro >
					<flowline name='GetTempFloat' description='' statediag='0' >
						<return name='Return' type='f32' description='' isconst='0' isHidden='0' isinit='0' usrinit='0.0' setinit='' />
						<local name='data' type='u32' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<command class_type='calculation' title='Calculation' cmdcolor='4206456' cmdcolor_sec='10785756' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' >
							<exp exp='.data = aht21_data[3] &amp; 0x0F' />
							<exp exp='.data = .data &lt;&lt; 8' />
							<exp exp='.data = .data | aht21_data[4]' />
							<exp exp='.data = .data &lt;&lt; 8' />
							<exp exp='.data = .data | aht21_data[5]' />
							<exp exp='.Return = ((FLOAT .data * 200.0) / 1048576.0) - 50.0' />
						</command>
					</flowline>
				</macro>
				<macro >
					<flowline name='GetStatus' description='' statediag='0' >
						<return name='Return' type='u8' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<command class_type='call' title='Get a byte of status (&amp;0x18) should be == 0x18 ' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' macro='i2cReadByte' >
							<return exp='.Return' />
							<argument exp='0x71' />
						</command>
					</flowline>
				</macro>
				<macro >
					<flowline name='WaitWhileAHTBusy' description='Wait whilst AHT21 is busy - returns true if busy flag cleared in time else false (fauilty sensor)' statediag='0' >
						<return name='Return' type='b1' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<local name='timeout' type='u8' description='' isconst='0' isHidden='0' isinit='1' usrinit='0' setinit='0' />
						<command class_type='loop' title='Loop' cmdcolor='4767473' cmdcolor_sec='11337727' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' type='0' exp='(GetStatus() &amp; AHT_STATUS_BUSY) &amp;&amp; (.timeout &lt; 5)' >
							<flowline >
								<command class_type='delay' title='Delay' cmdcolor='4206456' cmdcolor_sec='10785756' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' exp='10' type='1' />
								<command class_type='calculation' title='Calculation' cmdcolor='4206456' cmdcolor_sec='10785756' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' >
									<exp exp='.timeout = .timeout + 1' />
								</command>
							</flowline>
						</command>
						<command class_type='calculation' title='Calculation' cmdcolor='4206456' cmdcolor_sec='10785756' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' >
							<exp exp='.Return = (GetStatus() &amp; AHT_STATUS_BUSY) == 0' />
						</command>
					</flowline>
				</macro>
				<macro >
					<flowline name='CheckCRC' description='Return true if CRC is correct for data' statediag='0' >
						<return name='Return' type='b1' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<local name='crc' type='u8' description='' isconst='0' isHidden='0' isinit='1' usrinit='255' setinit='0xFF' />
						<local name='i' type='u8' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<local name='j' type='u8' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<command class_type='loop' title='Loop' cmdcolor='4767473' cmdcolor_sec='11337727' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' type='2' forvar='.i' exp='6' >
							<flowline >
								<command class_type='calculation' title='Calculation' cmdcolor='4206456' cmdcolor_sec='10785756' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' >
									<exp exp='.crc = .crc ^ aht21_data[.i]' />
								</command>
								<command class_type='loop' title='Loop' cmdcolor='4767473' cmdcolor_sec='11337727' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' type='2' forvar='.j' exp='8' >
									<flowline >
										<command class_type='decision' title='Decision' cmdcolor='4767473' cmdcolor_sec='11337727' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' exp='.crc &amp; 0x80' swap='0' >
											<flowline >
												<command class_type='calculation' title='Calculation' cmdcolor='4206456' cmdcolor_sec='10785756' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' >
													<exp exp='.crc = (.crc &lt;&lt; 1) ^ 0x31' />
												</command>
											</flowline>
											<flowline >
												<command class_type='calculation' title='Calculation' cmdcolor='4206456' cmdcolor_sec='10785756' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' >
													<exp exp='.crc = .crc &lt;&lt; 1' />
												</command>
											</flowline>
										</command>
									</flowline>
								</command>
							</flowline>
						</command>
						<command class_type='calculation' title='Calculation' cmdcolor='4206456' cmdcolor_sec='10785756' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' >
							<exp exp='.Return = (.crc == aht21_data[6])' />
						</command>
					</flowline>
				</macro>
				<macro >
					<flowline name='Main' description='' statediag='0' >
						<return name='Return' type='v0' description='' isconst='0' isHidden='0' isinit='0' usrinit='' setinit='' />
						<local name='t' type='s16' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<local name='h' type='s16' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<local name='ok' type='b1' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<local name='tfp' type='f32' description='' isconst='0' isHidden='0' isinit='0' usrinit='0.0' setinit='' />
						<local name='hfp' type='f32' description='' isconst='0' isHidden='0' isinit='0' usrinit='0.0' setinit='' />
						<command class_type='call' title='User Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' macro='CheckCRC' />
						<command class_type='call' title='Component Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' component='UART1' macro='Initialise' />
						<command class_type='call' title='Component Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' component='UART1' macro='SendString' >
							<argument exp='&quot;AHT21 Test\r\n\n&quot;' />
						</command>
						<command class_type='call' title='User Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' macro='Intitialise' />
						<command class_type='loop' title='Loop' cmdcolor='4767473' cmdcolor_sec='11337727' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' type='0' exp='1' >
							<flowline >
								<command class_type='call' title='User Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' macro='Sample' >
									<return exp='.ok' />
									<argument exp='true' />
								</command>
								<command class_type='decision' title='Decision' cmdcolor='4767473' cmdcolor_sec='11337727' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' exp='!.ok' swap='0' >
									<flowline >
										<command class_type='call' title='Component Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' component='UART1' macro='SendString' >
											<argument exp='&quot;CRC Failure\r\n&quot;' />
										</command>
									</flowline>
									<flowline >
										<command class_type='call' title='User Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' macro='GetHumidityFloat' >
											<return exp='.hfp' />
										</command>
										<command class_type='call' title='User Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' macro='GetTempFloat' >
											<return exp='.tfp' />
										</command>
										<command class_type='call' title='User Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' macro='GetTempInt' >
											<return exp='.t' />
										</command>
										<command class_type='call' title='User Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' macro='GetHumidityInt' >
											<return exp='.h' />
										</command>
										<command class_type='call' title='User Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' macro='ShowValueFloat' >
											<argument exp='&quot;Temp (fp) = &quot;' />
											<argument exp='.tfp' />
											<argument exp='false' />
										</command>
										<command class_type='call' title='User Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' macro='ShowValueFloat' >
											<argument exp='&quot; humidity (fp) = &quot;' />
											<argument exp='.hfp' />
											<argument exp='false' />
										</command>
										<command class_type='call' title='User Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' macro='ShowValue' >
											<argument exp='&quot; temp (int * 10) = &quot;' />
											<argument exp='.t' />
											<argument exp='false' />
										</command>
										<command class_type='call' title='User Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' macro='ShowValue' >
											<argument exp='&quot; humidity (int) = &quot;' />
											<argument exp='.h' />
											<argument exp='true' />
										</command>
									</flowline>
								</command>
								<command class_type='delay' title='Delay' cmdcolor='4206456' cmdcolor_sec='10785756' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' exp='5' type='2' />
							</flowline>
						</command>
					</flowline>
				</macro>
				<macro >
					<flowline name='Intitialise' description='Init the AHT21 and ENS160 sensors.  Return 0 on success - else ferror code' statediag='0' >
						<return name='Return' type='b1' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<local name='x' type='u8' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<local name='timeout' type='u8' description='' isconst='0' isHidden='0' isinit='1' usrinit='0' setinit='0' />
						<command class_type='delay' title='Delay' cmdcolor='4206456' cmdcolor_sec='10785756' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' exp='100' type='1' />
						<command class_type='call' title='Component Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' component='I2C_Master1' macro='Transaction_Initialise' >
							<argument exp='AHT21_ADDRESS' />
						</command>
						<command class_type='call' title='User Macro' disable='1' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' macro='i2cByte' >
							<return exp='.x' />
							<argument exp='AHT21_CMD_SOFTRESET' />
						</command>
						<command class_type='delay' title='Delay' disable='1' cmdcolor='4206456' cmdcolor_sec='10785756' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' exp='100' type='1' />
						<command class_type='decision' title='Decision' disable='1' cmdcolor='4767473' cmdcolor_sec='11337727' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' exp='.x != 1' swap='0' >
							<flowline >
								<command class_type='native' title='Code' ccode='return 1;' cmdcolor='4206456' cmdcolor_sec='10785756' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' language='C' />
							</flowline>
							<flowline />
						</command>
						<command class_type='call' title='User Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' macro='GetStatus' >
							<return exp='.x' />
						</command>
						<command class_type='decision' title='Calibrate if needed' cmdcolor='4767473' cmdcolor_sec='11337727' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' exp='(.x &amp; 0x18) != 0x18' swap='0' >
							<flowline >
								<command class_type='call' title='User Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' macro='i2cWord' >
									<argument exp='AHT10_CMD_CALIBRATE' />
									<argument exp='0x0800' />
								</command>
							</flowline>
							<flowline />
						</command>
						<command class_type='decision' title='Decision' cmdcolor='4767473' cmdcolor_sec='11337727' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' exp='(GetStatus() &amp; 0x18) != 0x18' swap='0' >
							<flowline >
								<command class_type='native' title='Code' ccode='return 2;' cmdcolor='4206456' cmdcolor_sec='10785756' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' language='C' />
							</flowline>
							<flowline />
						</command>
						<command class_type='calculation' title='Calculation' cmdcolor='4206456' cmdcolor_sec='10785756' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' >
							<exp exp='.Return = 0' />
						</command>
					</flowline>
				</macro>
				<macro >
					<flowline name='i2cReadByte' description='' statediag='0' >
						<return name='Return' type='u8' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<param name='cmd' type='u8' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<local name='x' type='u8' description='' isconst='0' isHidden='0' isinit='0' usrinit='&quot;&quot;' setinit='' >
							<array size='6' />
						</local>
						<local name='len' type='u8' description='' isconst='0' isHidden='0' isinit='0' usrinit='0' setinit='' />
						<command class_type='call' title='User Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' macro='i2cByte' >
							<argument exp='.cmd' />
						</command>
						<command class_type='call' title='Component Macro' cmdcolor='4487093' cmdcolor_sec='11066367' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' component='I2C_Master1' macro='Transaction_Read' >
							<return exp='.len' />
							<argument exp='.x' />
							<argument exp='1' />
						</command>
						<command class_type='calculation' title='Calculation' cmdcolor='4206456' cmdcolor_sec='10785756' cmdcolor_txt='16777215' cmdgradient='4' cmdopacity='0.64' >
							<exp exp='.Return = .x[0]' />
						</command>
					</flowline>
				</macro>
			</macros>
			<component class_type='ref' guid='24219805-113d-4b12-b6bd-e1b0b0c33981' vmin='4' vmaj='1' codename='I2C_Master1' panelId='0' x='121.548' y='-124' z='0' xsz='25.1778' ysz='25.1392' zsz='25' xang='0' yang='0' zang='0' xquat='0' yquat='0' zquat='0' wquat='1' visible='1' scadavisible='1' interactive='1' solid='1' layer='2' poslock='0' comp2dType='0' >
				<resources />
				<properties />
				<values >
					<value target='cal_i2c::CHANNEL' data='001' />
					<value target='cal_i2c::BAUD_LIST' data='002' />
					<value target='cal_i2c::BAUD' data='400000' />
					<value target='cal_i2c::StopDel' data='1' />
					<value target='cal_i2c::SRC' data='000' />
					<value target='cal_i2c::SMB' data='000' />
					<value target='cal_i2c::ClockStretching' data='1' />
					<value target='cal_i2c::SDA' data='$PORTC.4' />
					<value target='cal_i2c::SDAPins' data='002' />
					<value target='cal_i2c::SCL' data='$PORTC.5' />
					<value target='cal_i2c::SCLPins' data='010' />
					<value target='label' data='I2C Master' />
					<value target='cal_i2c::ScopeTraces' data='0' />
					<value target='cal_i2c::ConsoleData' data='1' />
					<value target='cal_i2c::Injector' data='000' />
				</values>
				<events />
				<apis />
				<variables />
				<macros />
			</component>
			<component class_type='ref' guid='c73616d1-7ad0-45d9-aada-69ccfa4c5efc' vmin='0' vmaj='3' codename='UART1' panelId='0' x='115.548' y='-124' z='1' xsz='25.1778' ysz='25.1392' zsz='25' xang='0' yang='0' zang='0' xquat='0' yquat='0' zquat='0' wquat='1' visible='1' scadavisible='1' interactive='1' solid='1' layer='2' poslock='1' comp2dType='0' >
				<resources />
				<properties />
				<values >
					<value target='cal_uart::CHANNEL' data='001' />
					<value target='cal_uart::BAUD_LIST' data='009' />
					<value target='cal_uart::BAUD' data='115200' />
					<value target='cal_uart::DBITS' data='008' />
					<value target='cal_uart::RETURN' data='001' />
					<value target='cal_uart::ECHO' data='000' />
					<value target='cal_uart::UseTX' data='1' />
					<value target='cal_uart::TX' data='$PORTD.1' />
					<value target='cal_uart::OutputPins' data='000' />
					<value target='cal_uart::TXAlt' data='0' />
					<value target='cal_uart::UseRX' data='1' />
					<value target='cal_uart::RX' data='$PORTD.0' />
					<value target='cal_uart::InputPins' data='001' />
					<value target='cal_uart::RXAlt' data='0' />
					<value target='cal_uart::FLOWEN' data='000' />
					<value target='cal_uart::RTS' data='$PORTB.2' />
					<value target='cal_uart::CTS' data='$PORTB.1' />
					<value target='label' data='UART' />
					<value target='cal_uart::ScopeTraces' data='0' />
					<value target='cal_uart::ConsoleData' data='1' />
					<value target='cal_uart::ConsoleFormat' data='000' />
					<value target='cal_uart::ConsoleColumns' data='64' />
					<value target='cal_uart::DataSource' data='000' />
					<value target='cal_uart::com_port' data='000' />
					<value target='cal_uart::Injector' data='000' />
					<value target='cal_uart::APIUseDDR' data='' />
					<value target='cal_uart::APIDDRPin' data='' />
					<value target='cal_uart::APIDDRRXState' data='' />
					<value target='cal_uart::APIUseFC' data='' />
					<value target='cal_uart::APICTSPin' data='' />
					<value target='cal_uart::APIRTSPin' data='' />
				</values>
				<events />
				<apis />
				<variables />
				<macros />
			</component>
		</component>
	</components>
	<scadaresourcelookup />
	<keymap />
	<panel2d shadows='0' lighting='2' brightness='0' >
		<background rgb='7292207' img='' style='0' />
		<camera xe='0' ye='0' ze='340.313' xt='0' yt='0' zt='0' xquat='0' yquat='0' zquat='0' wquat='1' />
		<viewport dx='200' dy='1732' zoom='71.1111' fix_topleft='0' />
		<page x='1000' y='1000' show='0' rgb='7360576' />
		<winpos ID='7005' RectRecentFloat='903,209,1359,895' RectRecentDocked='0,0,200,1767' RecentFrameAlignment='16384' RecentRowIndex='0' IsFloating='0' MRUWidth='32767' PinState='0' IsMaximized='0' IsVisible='0' />
	</panel2d>
	<panel3d shadows='0' lighting='2' brightness='0' perspective='1' >
		<background rgb='8409120' img='' style='0' />
		<table rgb='7360576' img='' style='0' size='0' />
		<camera xe='0' ye='0' ze='781.66' xt='0' yt='0' zt='0' xquat='0' yquat='0' zquat='0' wquat='1' />
		<camerakey0 xe='0' ye='0' ze='300' xt='0' yt='0' zt='0' xquat='0' yquat='0' zquat='0' wquat='1' />
		<camerakey1 xe='-3.67394e-14' ye='0' ze='-300' xt='0' yt='0' zt='0' xquat='0' yquat='1' zquat='0' wquat='6.12323e-17' />
		<camerakey2 xe='0' ye='-300' ze='6.66134e-14' xt='0' yt='0' zt='0' xquat='-0.707107' yquat='0' zquat='0' wquat='0.707107' />
		<camerakey3 xe='-3.67394e-14' ye='300' ze='6.66134e-14' xt='0' yt='0' zt='0' xquat='-4.32978e-17' yquat='0.707107' zquat='0.707107' wquat='4.32978e-17' />
		<camerakey4 xe='-300' ye='-6.66134e-14' ze='6.66134e-14' xt='0' yt='0' zt='0' xquat='-0.5' yquat='0.5' zquat='0.5' wquat='0.5' />
		<camerakey5 xe='300' ye='-6.66134e-14' ze='6.66134e-14' xt='0' yt='0' zt='0' xquat='-0.5' yquat='-0.5' zquat='-0.5' wquat='0.5' />
		<camerakey6 xe='-173.205' ye='-173.205' ze='173.205' xt='0' yt='0' zt='0' xquat='-0.424708' yquat='0.17592' zquat='0.339851' wquat='0.820473' />
		<winpos ID='7004' RectRecentFloat='0,425,654,1002' RectRecentDocked='0,0,463,770' RecentFrameAlignment='16384' RecentRowIndex='0' IsFloating='0' MRUWidth='32767' PinState='0' IsMaximized='0' IsVisible='0' />
	</panel3d>
	<panels2d count='1' >
		<panel2d_0 id='0' name='2D Panel' >
			<winpos ID='1171' RectRecentFloat='1173,311,1823,761' RectRecentDocked='653,232,1295,2046' RecentFrameAlignment='16384' RecentRowIndex='0' IsFloating='0' MRUWidth='32767' PinState='0' IsMaximized='0' IsVisible='0' />
			<background fill='288230376151053813' showgrid='1' gridstyle='1' gridsize='10' gridbrush='71776119075691740' snaptogrid='1' />
		</panel2d_0>
	</panels2d>
	<layout >
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