Rc signal help

[geckogrotto]

Im in US so was sleeping... Your in the loop you have missed nothing other than Malc knows my name lol.

I want to be able to get the RX signal and tell weather the stick is left or right or center and flash the LED acordingly. Thats it, nothing overly complicated. I just got up and will be checking the latest code. From what I read from Malcs response its still no go.

Ok to make it make more sense lets think of it as a blinker on a car.
Left on the stick will cause the 1 blinker to blink right on the stick will cause another to blink and center will cause none to blink.

I have been just trying to blink or solid a led but that may make more sense.

Malc I will try the LCD and see what I get. Wish I had a serial connect some how.

[Jumper]

Hi,

I am not a big fan of PULSIN. It is sometimes hard to know what is happening so I prefer setting up timers to measure things myself. There are several posts in this forum how to use timers and it is really not that hard. If you pick a 16 bit timer and set the prescaler to 1:1 you can measure up to 65 ms without overflowing at 4 Mhz and 2.55 ms with a 8-bit timer and getting a nice resolution. The RC signal shouldn't be hard to catch this way.

If you have tried everything else, Timers might be worth a try.



/me

[geckogrotto]

Ok im feeling really dumb but may have it worked out. Doing some tests

[geckogrotto]

Ok man I found the problem it was infinite resistance between the keyboard and chair

Its working now. Working on cleaning up the code and will post new code when i'm done... It wasn't my code that was the problem it was me lol

[Acetronics2]

Hi, Gremlin - lotto ( ! )

The blinking rate could help ( US, European ... ??? ) ... thanks.

Alain

[geckogrotto]

Ok so here it is Im stupid was the main problem. Somehow I figured that the signal would just come pouring out of that little white wire without any ground to the signal cable... Once I got over that blonde moment everything fell into place. The code below could be done a lot better and some saftys put in for wild RC signals but I wanted to get out some working code.
Basically by moving the stick back and forth it will figure out whats the max high and low and then accept anything thats about 1/3 of that in that direction. Now that its clear as mud here is the code

'12F675
@ __CONFIG _INTRC_OSC_CLKOUT & _WDT_OFF & _MCLRE_OFF & _CP_OFF
OPTION_REG.5 = 0                                                       ' clock source internal

Pulselen   var Byte                                                 ' Pulselen can be 0 - 255, 100 = 1 ms, 200 = 2 ms
Init       var Byte                                                 ' Init used to flash LED
HighCode   Var Byte
LowCode    Var Byte
clear
highcode = 0 ' setup vars to be changed
lowcode = 200 ' setup vars to be changed
Input GPIO.3                                                           ' set pin 5 to RX signal

ReadPWM:
   PulsIn GPIO.3, 1,Pulselen                 ' pin 4 - read high pulse length, times out after .65535 seconds 
If pulselen > highcode then Highcode = Pulselen ' make sure highcode is at full throw This will avoid having to go though a setup
If pulselen < LowCode and Pulselen > 50 then Lowcode = Pulselen ' make sure lowcode is at full throw This will avoid having to go though a setup
if (Pulselen + 20) >= highcode then
   For Init = 1 To 6                                                 
      High GPIO.1                                                      
      pause 60                                                      
      Low GPIO.1                                                     
      pause 60                                                      
   Next
pause 1000		    
 endif
If (Pulselen - 20) <= LowCode Then 
      High GPIO.1                                                      
      pause 3000                                                      
      Low GPIO.1
      pause 200
endif

   GoTo ReadPWM

[malc-c]

Yup - works here too - using a JR X3810 transmitter and cheap and chearful GWS RX

We got there in the end