Advice please - Warning message

[malc-c]

Steve,

Just tried using ICSP and that failed too

Info: Loading definitions for "PIC18F2550" from devices.ini .
Info: Support for some newer PIC18F devices added by Martin v.d. Werff 2005
Parsed "C:\Program Files\Microchip\MPLAB IDE\Device\PIC18F2550.dev" : found 113 bit combinations in 39 configuration bit groups .
PIC18F: family='21'=4550, WriteLatch=32 bytes, EraseLatch=64 bytes .
Initialising PIC-Programmer: Success.
Testing: delay(500ms) took 0.50 seconds, timer_freq=3.5795 MHz ... ok
Programming...
Erasing ("bulk" or "chip") ...
Programming CODE, 0x000000..0x0000B4
Verifying CODE, 0x000000..0x0000B4
Verifying 0x000000..0x0000B4
Verify Error: 000000: read 00FFE3, wanted 00EF43, mask 00FFFF ==> diff=0010A0
Verify Error: 000002: read 00FFFF, wanted 00F000, mask 00FFFF ==> diff=000FFF
Verify Error: 000004: read 00FFFF, wanted 005008, mask 00FFFF ==> diff=00AFF7
Verify Error: 000006: read 00FFFF, wanted 000B07, mask 00FFFF ==> diff=00F4F8
More Verify Errors, unable to list all (total=91)
Programming CONFIG, 0x300000..0x300006
Verifying CONFIG, 0x300000..0x300006
Verifying 0x300000..0x300006
Verify Error: 300000: read 00C080, wanted 0030C0, mask 00CF3F ==> diff=00C000
Verify Error: 300002: read 00FFFF, wanted 00FECE, mask 001F3F ==> diff=000131
Verify Error: 300004: read 00FFFF, wanted 00F8FF, mask 008700 ==> diff=000700
Verify Error: 300006: read 00FFFF, wanted 00FFBB, mask 0000E5 ==> diff=000044
ERROR: Programming FAILED !

Tried the following:
Disconnect the programmer, insert the PIC, connect the serial lead, launch winpic, load the code and programmed - it errored. Read back and all the code locations were FFFF.

[malc-c]

Ohhh - checked the config screen after doing that and see the attached - that was not there before - all those listings !!

[malc-c]

Loading the following:

ASM
    __CONFIG  _CONFIG1L, _PLLDIV_1_1L & _CPUDIV_OSC1_PLL2_1L & _USBDIV_1_1L 
    __CONFIG  _CONFIG1H, _FOSC_XT_XT_1H & _FCMEN_OFF_1H  &  _IESO_OFF_1H 
    __CONFIG  _CONFIG2L, _PWRT_ON_2L & _BOR_ON_2L &  _BORV_1_2L  & _VREGEN_OFF_2L 
    __CONFIG  _CONFIG2H, _WDT_OFF_2H 
    __CONFIG  _CONFIG3H, _MCLRE_ON_3H & _LPT1OSC_OFF_3H & _PBADEN_OFF_3H & _CCP2MX_OFF_3H 
    __CONFIG  _CONFIG4L, _STVREN_ON_4L & _LVP_OFF_4L & _XINST_OFF_4L & _DEBUG_OFF_4L 

ENDASM
ADCON1=$0F
TRISB=%00000000                  'set PORTB as all output
PORTB=0

ByteA   var byte
 
main:
    for bytea=0 to 7
        PORTB=DCD BYTEA
        PAUSE 250
        NEXT
    PORTB=255
    PAUSE 250
    goto main

into winpic now displays the attached settings

[mister_e]

AAAAARRRRRRGHHH!!!!<img src="http://www.mister-e.org/Pics/not_happy_thumb.gif"><img src="http://www.mister-e.org/Pics/RollinEyes.gif"><img src="http://www.mister-e.org/Pics/Mecontent08.gif">

OK the config are good, but the software/hardware don't program it the right way... do you have another machine but with WIN98 ?

[tom]

Have you tried put the line
ADCON0=0

[malc-c]

Yep I agree - time to get a new programmer - I've been trying to find a PicKIT2 in the UK - one place has them for £44 another for £12 !! - both are out of stock. The only thing I don't like about the PicKIT2 is that is ISCP - but I 'spose I'll get used to it...

Oh and I tried those changed - guess what.......... ?

It ERRORED !!!!!! -

Thanks mate for all your help.. I've picked up a thing or two along the way, so it hasn't all been in vien.....

[mister_e]

Too bad, i don't know any UK supplier but usually Microchip Direct is pretty fast. 2-3 business days here.

Why you don't like ICSP? it's handy no? OR you can still build some ICSP to DIP adapters?... easy, hack your Olimex sockets

kinda learning opportunities

EDIT:

Yeah... I downloaded the manual with the shematic at the back... and the firmware is avaialble... For a moment of insanity I thought I would look at making one... there's just one problem... I can't program the PIC !! - sorta chicken and egg thing

Yeah that's what i thought too... i have the bootloader .HEX file too but...

[malc-c]

Steve,

Well it must be either something querky with either the programming software or the 18F series of chips (or just the 18F2550)

I tried repeating some of the things here but using a 16F873A PIC (just happened to have a couple in my hobby box - no other reason) I compiled the following code (edited version of your test code)

ADCON1=$0F
TRISB=%00000000                  'set PORTB as all output
PORTB=0

ByteA   var byte
 
main:
    for bytea=0 to 7
        PORTB=DCD BYTEA
        PAUSE 250
        NEXT
    PORTB=255
    PAUSE 250
    goto main

It compiled with out error and loaded without error (using either application, Winpic or PICpgm). This was using the default INC files I also tried my original code (in post 1 I think) and that too loaded fine. But try as I might, even though the programmer, both software and hardware claim to support 18F2550's I can't get it to work with this PIC.

I've yet to breadboard and test the PIC - and I need to swatt up on the datasheet to see what this 16F873A offers, but as I don't need anything too fancy I'm sure it will do just fine (assuming I can get the hardware running)

[malc-c]

Well using the 16F873A I have flashing LEDs so that rules out things like faulty components, or a suspected problem with the breadboard.

Looking at the datasheet, I think the only possible limitations will be the memory for data storage, other than that it has AtoD so I should be able to connect up a music source and get the LEDs to act like a VU meter

[mister_e]

OK DUDE, time to get another device programmer. PICKIT2, BK844a, PICSTART PLUS, EasyPIC 4 worked ALL fine here between our posts.

And guess what's inside the PICKIT 2??? a PIC8F2550

Sorry i can't help more than this

[mister_e]

Yeah it's kind of interesting to see that there's no config fuse correctly passed... disable WDT, LVP, and set XT osc manually, then re-program your PIC..

[malc-c]

And guess what's inside the PICKIT 2??? a PIC8F2550

Yeah... I downloaded the manual with the shematic at the back... and the firmware is avaialble... For a moment of insanity I thought I would look at making one... there's just one problem... I can't program the PIC !! - sorta chicken and egg thing

Thanks mate - I'm off to bed as its gone midnight