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

[code]

RCchan1 PIN RA.0 INPUT

RCx VAR Byte ' for storing input
WATCH RCx  

Get_RC_Pulse:
   IF RCchan1 = 1 THEN Get_RC_Pulse ' wait for pin to go low
   PULSIN RCchan1, 1, RCx ' measure 10 - 2550 us pulse, 0 = 0ms, 100 = 1ms, 200 = 2ms, 150 = 1.5ms (neutral)
   ' now RCX approx 100-200 (if there are actual pulses). You could adjust it so 128 = neutral...., etc
   GOTO Get_RC_Pulse
[/code]

Personally, I would poll RC receiver pin(s) in an interrupt, so that the last pulsewidth is always available "in the background", but the above should work. You might want to perform so error checking on the received value in case the pulsewidth is too long or too short (which could indicate that the transmitter is not on, or there is noise, etc).

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