PIC 16f84 Assembly Language Programming questions

[JohnVR]

Is there anyone out there familiar with MPlab, picstart, MPASM, and assembly language programming?

I am building a project where I use sensors to detect doors and windows being left open, transmitting this information wireless and addressing a 16F84 pic which in turn serially
sends messages to drivers for 10 each seven segment displays.
I am having trouble with the program and am looking for someone help me with the errors and maybe a better way of using look-up tables and serial transmitting using the pic
16f84. I have been reading Easy Pic'n and serial pic'n and pic'n up the pace.

JohnVR
HogFarmerJohn@aol.com

 

[zBuilder]

I'm familiar with MPlab & MPASM, and have done a little bit of programming with the PIC. The only way, except using the eeprom, to do a lookup table in with a PIC MCU is to do something like this:

Put the number to be "looked up" in W and then,
call getdigit

;code below is a subroutine that returns your # in W (It was some seven segment codes for a project of mine. Make sure that the number in W doesn't exceed the length of the lookup table or your program will be in LaLa land.)

getdigit
addwf PCL,F
digits
retlw 0x11 ;0
retlw 0x77 ;1
retlw 0x29 ;2
retlw 0x23 ;3
retlw 0x47 ;4
retlw 0x83 ;5
retlw 0x81 ;6
retlw 0x37 ;7
retlw 0x01 ;8
retlw 0x03 ;9




Kim_Christensen@telus.net

http://www3.bc.sympatico.ca/Kim_Christensen/index.html