In SX Microcontrollers, SX/B Compiler and SX-Key Tool, hainguyen51 wrote:

Hi,
 

I need to detect an edge of a signal (+ or -). I have tried to use the example in the manual but it doesn't seem to work. Anyone knows how please let me know. In the main program, I would like to set rc.0 "high" when a positive edge is detected.

 

Thanks

Hai

 

start
  MOV M,#$0F    ;Set up MODE register.
  MOV !RB, #$FF   ;Set $00 make RB all Inputs.
  MOV !RC, #$00   ;Set $00 make RC all Outputs.
  MOV M,#$0E    ;Set up MODE for PULL-UP configuration.
  MOV !RB, #$00   ;Set $00 make RB all inputs' Pullup.
  MOV !RC, #$00   ;Set $00 make RC all Outputs' Pullup.
;
  MOV M,#$0A
  MOV !RB, #$00   ;Set $00 make +slope detect at RB pins.
;
main 
  MOV M,#$09
  MOV !RB,#$00
  JMP main

---------- End of Message ----------


You can view the post on-line at:
http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=302755

Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com

The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2008 (http://www.dotNetBB.com)