R/C receiver to PIC16F84

[tech]

i get what u mean and had Define OSC 20 and the HC oscillator

i dont get what u mean by the point below.
How i measure CH1 and CH2? what u mean by "miss CH2"

2) as your channels follow each other, you must know you'll measure CH1, miss CH2, miss CH1, measure CH2, measure CH1, miss CH2, miss CH1 , measure CH2, etc, etc ...

[skimask]

i dont get what u mean by the point below.
How i measure CH1 and CH2? what u mean by "miss CH2"
2) as your channels follow each other, you must know you'll measure CH1, miss CH2, miss CH1, measure CH2, measure CH1, miss CH2, miss CH1 , measure CH2, etc, etc ...

Takes to time to do what a PIC has to do according to your program.
Therefore, if doing all of this thru software (i.e. not using any internal hardware modules), you'll spend time measuring the pulse width of CH1, then while acting upon that (driving another servo or something?), the PIC is too busy doing one thing to measure another pulsing (CH2).

[Acetronics2]

Re,

That's simple :

The channel signals follow each others within ~ 10-15 ns ( nano seconds ! ) delay ...

PULSIN need a little time ( some µs ) to be ready to catch the signal. (see PbP libs ! )

those µs being more than the ns channel separation time, the second PULSIN doesn't see the second pulse rising edge ... and must wait for the following frame.

That's all

Alain