In SX Microcontrollers, SX/B Compiler and SX-Key Tool, bean wrote:

Unless you really need a VP, you could just use PULSIN, it will timeout during the long 20ms "reset" time and PULSIN will return 0.

Something along the lines of:

' Wait for reset
DO
  PULSIN pin, 1, x
LOOP UNTIL x = 0

' Read next 4 pulses
cnt = 0
DO
  PULSIN pin, 1, x
  IF x > 0 THEN
    values(cnt) = x
    INC x
  ENDIF
LOOP UNTIL cnt > 3

Bean.

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