F886 & pgm

[mackrackit]

This is for MPASM..

@ __config _CONFIG1, _INTRC_OSC_NOCLKOUT & _WDT_ON & _MCLRE_OFF & _LVP_OFF & _CP_OFF

Notice the E on MCLR E

[Bruce]

If only RB3 causes your problem, then I suspect you're simply not getting LVP turned off.

It would really help if you posted your code.

[Archangel]

You got analog all to heck on port B, shut off the comparators and don't forget anselh

[MOUNTAIN747]

So here’s the scoop! I’ve tested this on multiple F886 and on multiple programmers with PBP2.60 and PBP2.46.

Bruce your right!

“If only RB3 causes your problem, then I suspect you're simply not getting LVP turned off.”

PBP 2.60/melabs programmer 4.23

@ DEVICE INTRC_OSC_CLKOUT,MCLR_OFF,BOD_OFF,WDT_OFF,LVP_OFF  
OSCCON=$70
ANSEL=     $00
ADCON0=   $00
CM1CON0 =$00 
CM2CON0 =$00

Program, Read Code, View – Configuration
Low Voltage Programming --- Enabled
Must tie RB3 to Vss ... Remove Vss on RB3 MCU stops after about 5sec.
Digital output voltage on RA7 low

PBP 2.46/melbas programmer 4.23
Same code
Program, Read Code, View – Configuration
Low Voltage Programming --- Disabled
No Vss needed on RB3 ... Digital output voltage on RA7 correct

Hobbyist was near wits end! Now What?

[ScaleRobotics]

don't forget anselh

I don't see anselh in your settings...

[Bruce]

Hmm. That is an interesting problem.

Try this. Save the file you're compiling in your 2.60 directory with one name, and save
a 2nd copy of the same file in your 2.46 directory with a different name.

Compile the one with 2.60. Open it with your MeLabs programmer software, and click on
the C radio button. You should see a screen with config settings like the one I have
attached.

Now open the file in your 2.46 directory, and repeat. Are config settings the same?

[MOUNTAIN747]

I’ve tried ANSELH=$00 with the same results. In fact BOR was also Enabled along with a few other items. It did set internal osc at 8Mhz with clockout at 2Mhz.

I used the code file on different computers. One with 2.60 and the other with 2.46. And yes I clicked the C radio button to take a look at the Configs.

I think I’ll try reloading 2.60 on the computer to see if there are any changes in results.

[Bruce]

If you're doing this on two different PCs, it may be that you just have different settings for the MeLabs programmer. Make sure you have Options >> Update Configuration From File checked on the 2.60 machine. That sounds like the problem.

You previously programmed it with LVP_ON, and it's not updating config settings.