Config problem PIC16F886

[Bosse]

Have 2 demo board - one with 16F688 and one with 16F887

Clock is now 02.30 in the morning here in Norway, so have to go to sleep

[skimask]

Have 2 demo board - one with 16F688 and one with 16F887

Clock is now 02.30 in the morning here in Norway, so have to go to sleep

Hook the PICKIT2 directly to those boards, set up a program to change the CONFIG fuse values, program them, read them back, see what happens.

[Bosse]

Hi everybody,

Now I have the CONFIG word without warnings - tested with the demo board 887

@ __CONFIG _CONFIG1, _LVP_OFF & _FCMEN_OFF & _IESO_OFF & _BOR_OFF & _CPD_OFF & _CP_OFF & _MCLRE_ON & _PWRTE_ON & _WDT_OFF & _INTRC_OSC_NOCLKOUT
@ __CONFIG _CONFIG2, _WRT_OFF & _BOR21V

Config from read back: 20E4 0600

Thanks again for all your help

[skimask]

Hi everybody,

Now I have the CONFIG word without warnings - tested with the demo board 887

@ __CONFIG _CONFIG1, _LVP_OFF & _FCMEN_OFF & _IESO_OFF & _BOR_OFF & _CPD_OFF & _CP_OFF & _MCLRE_ON & _PWRTE_ON & _WDT_OFF & _INTRC_OSC_NOCLKOUT
@ __CONFIG _CONFIG2, _WRT_OFF & _BOR21V

Config from read back: 20E4 0600

Thanks again for all your help

Any idea which config item in particular was causing the problem?

[Bosse]

Will check and come back - have study exampel files from Microchip where I found some CONFIG words.

[skimask]

Will check and come back - have study exampel files from Microchip where I found some CONFIG words.

Just remove the CONFIG items one by one until the problem goes away...

[Bosse]

Hi Skimask,
First thank you for your earlier info
Can you tell me how to find out wich configuration I have - how to calculate or find out in another way.

My code runs with internal OSC 8 MHz (I hope) but after leaving the PCB for some hours, it need time to start normal. Reading DS1990A and first time touching the probe nothing happens, second time all O.K - after about 10 sec all works normal and it also works if you touch direct after each other - touching of course allways with different DS1990A and after each reading the variable holding the code resets.

Config word: 20E4 0600