16F914 and LCD interrupt bit (LCDIE)

[bogdan]

App=Countdown using a "dumb" LCD

I'm trying to use SLEEP between the counts...and in order to do that i have to:

-enable all unmasked peripheral interrupts (PEIE bit)
INTCON.6=1

-enable LCD interrupts (LCDIE bit)
PIE2.4 = 1

-enable the LCD in SLEEP mode (SLPEN bit)
LCDCON.6 = 0


Even whitout the SLEEP function (inside the FOR...NEXT countdown cycle), i coudn`t see the interrupt on the PIR2.4 register (LCDIF bit)


Any ideea?

Best regards,
Bogdan

[jderson]

I believe the LCD interrupt only applies when using a multiplexed type LCD. If you are using a "static-mode" LCD, Darrel Taylor's Instant Interrupts should work nicely.

[bogdan]

you are right...

"The interrupt is not generated when the Type-A waveform is selected and when the Type-B with no multiplex (static) is selected."

i was on Type -A and multiplex

thank you man