'PICAXE-08 serial OUTPUT data control link for July 2003 SiChip article. V 1.0  15/5/03
'Needs matching input program & PICAXE hardware at receiver unit for sender control
'Connect status check LED via 220 Ohm dropper R & toggle switch Pin 0 with pulldown R
'Simple 2 wire data link can be greatly extended or even replaced with damp string !
'Variable b0= switch status ( 0=off/low, 1=on/high ) with 10k pulldown resistor
'Pause times at sender may need tweaking to synch. with receiver - decoding o'heads ?
'Via Stan.SWAN (MU@W, New Zealand) => s.t.swan@massey.ac.nz <=
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'Lines beginning ' are program comments etc & may be ignored if need be
'Program available for web download => www.picaxe.orcon.net.nz/tx.bas  
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state:				' procedure to serial data send local switch status
 serout 4,n2400,(b0)		' setup & 2400bps send b0 value as serial output pin 4
if pin1=1 then fastbeep		' if local switch is on/high jump to fastbeep 

slowbeep:			' lazy slowbeep if switch is off (0)
 b0=0				' set switch status variable b0=0
  pulsout 2, 5000		' pulse attached LED at pin 2 for local confirmation
 pause 2000			' 2 sec. delay (may need altering for synch ?)
goto state			' loop back to switch status routine

fastbeep:			' fastbeep urgent routine if switch is on (1)
 b0=1				' assign switch status variable b0=1
  pulsout 2,5000		' pulse attached LED at pin 2 for local confirmation
 pause 500			' 1/2 sec. delay (may also need altering for synch ?)
goto state			' loop back to switch reading routine