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

I have successfully used a Port B pin to wake the SX-48 after issuing SLEEP.  I used the following code to set up the Port B pin 0:

[code]
  WKED_B = 0
  WKPND_B = 0
  WKEN_B = %11111110
[/code]

This produces the following assembly in the 3.2.3 compiler:

[code]
  MOV W,#$1A                     ;  WKED_B = 0
  MOV M,W                       
  MOV !RB,#0                    

  MOV W,#$19                     ;  WKPND_B = 0
  MOV M,W                       
  MOV !RB,#0                    
 
  MOV W,#$1B                     ;  WKEN_B = %11111110
  MOV M,W                       
  MOV !RB,#%11111110 
[/code]

I would expect that if WKEN_B is set to $FF, Port B would not produce an interrupt (Also, it uses $1B).  I would try this but I'm waiting on a replacement SX-48.  Also, since I am using SLEEP, the SX-48 resets upon a change on Port B and does not enter an interrupt routine.

Joe

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