HSERIN / SERIN Problem with 16f690

[mackrackit]

Are you sure the PIC is running? Try a quick "blinky" without any serial stuff.

[rborsuk]

Mackrackit,
Yep, it's running. Follow the rest of my reply.
Skimask,
Sorry for the delay. I wanted to try some additional things. I'll explain in a bit. I tried the new code. It produces two long flashes on the LED and one very quick one. It then does nothing. No characters are displayed on the terminal and I can't enter anything. Thinking that it might be something else, I traded out the Max232 with a Max233 (eliminated the caps and such). Same results. I then tried a new 16F690 (thinking that the other one might have been damaged), same results. Anything we're missing here?

Rob

[mister_e]

Floating MCLR?
LVP is OFF?
Noisy PSU?
Poor contact, low battery, are some other great tests..

You could also begin your program with something like...

START:
        HSEROUT ["1,2,1,2 TESTING....",13,10]
        FOR MyVAR=0 TO 250
                HSEROUT ["MyVAR=",#MyVAR,13,10]
                NEXT
        GOTO START

[skimask]

Does the F690 run from the external crystal by default?
Try removing DEFINE OSC 3 and see what happens.

[mister_e]

default config line is...

 device  pic16F690, intrc_osc_noclkout, wdt_on, mclr_on, protect_off

We don't see any config fuse setting here, so this would make some sense...

[rborsuk]

This is my config line

 __config _XT_OSC & _WDT_ON & _MCLRE_ON & _CP_OFF

Rob

[rborsuk]

Success!!
Okay, same setup. Same code. This time compiling was done with the melabs compiler (instead of mpasm) and downloaded with a pickit2 (instead of an ICD2). I'm going to investigate this more and post my findings.

Rob