My button works like magic, I only have to hover my finger over it - Page 3 - Electronic Circuits Projects Diagrams Free

kchriste · 13th August 2007, 03:26 AM

Try straddling the PIC with C3. ie: connect C3 as close to pins 5 & 14 of the PIC as possible. As Philba mentioned, use an ohm meter to make sure pin 18 of the PIC is really connected to R2 and that R2's other end is really connected to 5V.
EDIT:
I just looked at your code and noticed that w_temp and status_temp in the ISR are not saved in bank free memory. You should fix this so that w_temp and status_temp are in the 0x70-0x7F (bank free) range in case your main routine is interrupted while it is using banks other than 0.

eblc1388 · 13th August 2007, 07:42 AM

Code:

loop
		call 	Check_Keys	; has start/ stop been triggered
		goto	loop		; Now wait for the next occurence.
		
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

Check_Keys
		btfsc	PORTA, BUT	; is there an input (low)
		call 	Send_StartStop	; Yes send start/stop signal to display
		return			; No do nothing

The "btfsc PORTA, BUT" in the code should be btfss.

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13th August 2007, 03:26 AM	(permalink)
kchriste	Try straddling the PIC with C3. ie: connect C3 as close to pins 5 & 14 of the PIC as possible. As Philba mentioned, use an ohm meter to make sure pin 18 of the PIC is really connected to R2 and that R2's other end is really connected to 5V. EDIT: I just looked at your code and noticed that w_temp and status_temp in the ISR are not saved in bank free memory. You should fix this so that w_temp and status_temp are in the 0x70-0x7F (bank free) range in case your main routine is interrupted while it is using banks other than 0. __________________ --- The days of the digital watch are numbered. --- Last edited by kchriste; 13th August 2007 at 03:43 AM.