Matrix user forums

Ok I am asking for help again. I am trying to read a RC imput to switch on and off an output on a 12F629 PIC. Is there any sample code out there that I can see to try and figure this out. All I want to do is set the pin high when the PIC sees the 2 ms signal and then low when it see anything else. Thanks again for everyone that has helped.


Jim Walthall

Hello

Do you mean radio control or resistor capacitor by RC?

Can you not simply read the input into a variable and then if the variable is one output a 1, if the variable is 0 output a 0.

Hi Benj,

I want to read a signal from a radio control receiver. I really don't understand what I need to read as the signal has a range of 1ms to 2ms pulse. There is no high or low value.

Thanks,

Jim Walthall

Hello

The type of pulse sent from a radio controlled receiver is normally a Servo motor control signal.

This control signal repeats 50 times a second (50hz) and consists of a logic 1 pulse that lasts between 1 and 2ms. The rest of the time the signal will be a logic 0.

Are you trying to measure the length of the pulse to try and detect the input from the transmitting device? If so then a timer interrupt is probably your best bet. I think someone else tried to do a very similar thing recently that you should be able to find by digging through the Flowcode forums.

Hi all, it`s been a while since i last browsed here, too busy doing other things that need doing instead of flowcoding. i`m on holiday at the mo and had time to see what all of you have been doing .
FLINT 3058 did a little program which you may like to have a look at,
http://www.matrixmultimedia.com/mmforum ... f=5&t=5194