'PVDEMO.BAS .PICAXE-18A + DS18B20 + Casio PV-S450 & PVterminal temp. reading & display
'Allows Pocket Viewer "organiser" temp.display   Via Stan.SWAN =>s.t.swan@massey.ac.nz
'Essentially a *lite version of datads18.bas (no LED pulses) ex. Nov.2003 SiChip article 
'This PV (Pocket Viewer) terminal prog. has no data saved- transfer later via PC synch?
'Not as good a terminal prog. as *Bananacom* -some ASCII ignored too,espec 12=FF(=CLS)?
'Auto shutdown of PV may freeze display too,but all held Picaxe EEPROM OK for "normal"
'PC/LCD display too. Check setup=>www.picaxe.orcon.net.nz/pvdemo.jpg .  Ver 1 25/11/03
'NB -Casio PV holder D9 serial needed it's 3 (&5)for data input( normally 2 & 5).Strange! 
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					'PLAYBACK ROUTINE
serout 2,n2400,(13,10,"Picaxe-18 Celsius temp",13,10)
for b0=0 to 255				'stored data values readout to terminal or LCD
read b0,b1				'polls & reads out stored eeprom values ( .csv)
serout 2,n2400,(44,#b1)			'2 wire (Casio PV D9 pins 3 & 5) Celsius display 
next b0					'read next stored EEPROM value serial out 
wait 30					'30 secs "reading" delay -modify if too short etc
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					'WRITE/DATA LOGGING ROUTINE
for b0= 0 to 255			'begin 256 data readings at time set by WAIT
sound 7,(75,10)		    		'Beep to alert data logging commencing
readtemp 1,b1				'direct Celsius reading of DS18B20 temp. returned 
serout 2,n2400,(#b1,44)			'Now allows display of data as gathered too !
write b0,b1 				'sequentially write values to EEPROM locations
WAIT 15 				'Checks every 15 secs (max 65)-alter to suit etc	
next b0					'Gathering automatically stops after 256 samples
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