my INT_RDA2 does not respond quickly enough

[pfournier]

18f8622, PCWH 3.249

I have searched this forum for similar circumstances but have not found any.

I am receiving data through my serial port #2. I hooked up a logic analyzer to the serial line and I set up my interrupts to toggle some unused outputs on entry and exit. What I see is that I sometimes don't get into my receive interrupt until after 2 or 3 characters have been sent to it. Well after 3 characters I now have an over-run condition and that 3rd character is lost. Other times I'll respond immediately after the stop bit of the first character.

As I said, I have set up all my other interrupts to control unused outputs so I can see their duration. I can't see ANYTHING else happening while the serial stream is coming in. I would put out some code, but this thing is huge and I am kind of hoping someone will recognize the problem right off.
_________________
-Pete

[PCM programmer]

Make a test program that just tests the 2nd serial port. See if you still
get the delay.

[Mark]

If you are not spending too much time in other interrupts, then the most likely problem is that interrupts are being disabled in some function. Are you disabling interrupts or are you calling a function from both main and an interrupt.

[pfournier]

[pfournier]

Found it!!!

Although I read that writing to the eeprom turns off the interrupts, I didn't realize writing to the eeprom took so long to do!

I also didn't realize I had an eeprom write where I did. I thought I moved it.
_________________
-Pete