Inchworm+ problem - verify failed Adr = 0x2 - Electronic Circuits Projects Diagrams Free

reflex · 27th October 2009, 04:03 PM

Hi, can somebody help me?

I'm getting the following error, when i try to program a pic18f2580:
ICD0161: Verify failed (MemType = Program, Address = 0x2, Expected Val = 0x0, Val Read = 0xD0)

I've tried 2 different devices and the error occurs on both. The eeprom is written ok. When i try to write only the config bits, it also fails on the second write...

Thanks for any hints!

Here is the output from mplab:

Code:

MPLAB ICD 2 Ready
Reading...
ICDWarn0038:  When using auto-calculate write range, reads cover the entire memory range. Do you wish to continue?
...EEPROM
...Program Memory (0x0 - 0x7FFF)
.. Config Memory
...User ID Memory
...Read Succeeded
MPLAB ICD 2 Ready
Programming Target...
...Validating configuration fields
...Erasing Part
...Programming EEPROM Memory
...Programming Program Memory (0x0 - 0x23F)
Verifying...
...Program Memory
ICD0161: Verify failed (MemType = Program, Address = 0x2, Expected Val = 0x0, Val Read = 0xD0)
ICD0275:  Programming failed.
MPLAB ICD 2 Ready

blueroomelectronics · 27th October 2009, 05:39 PM

Hmm sounds like it's not connected to the target properly. How do you have it connected to the 18F2580? Is it in circuit or on a breadboard?

reflex · 27th October 2009, 06:01 PM

It's connected in a circuit. Icd2 works with it...

blueroomelectronics · 27th October 2009, 06:16 PM

Hmm, I changed the final VPP cap on some kits to 4.7uF. It may be too small and I'll have to use 22uF like on the older kits. Do you have a spare 10uF 16V cap (just parallel it across)

blueroomelectronics · 27th October 2009, 06:42 PM

C12 is the cap in question.

reflex · 27th October 2009, 07:57 PM

i only have 15µ, but the error is the same.

I've also replaced it with a 22µ and more errors was the result

blueroomelectronics · 27th October 2009, 08:28 PM

Hmm, do you have MPLAB set to automatically download new firmware? Which version of MPLAB are you using? Is the target running at 5V?

reflex · 27th October 2009, 08:34 PM

i've tried it with Mplab 8.36 and 7.6
Firmware download happens, when i switch to a different Mplab.
Target is running on 5V.

When programming it only writes 3 commands: first is correct, second is wrong and fails during verify, and the third is also wrong.
It's also the same, if i try to program only the configuration area.

blueroomelectronics · 27th October 2009, 08:44 PM

Do you have other PICs with the same problem?

reflex · 27th October 2009, 08:50 PM

i have 2 identical prototype boards here - on both the same problem...
the pic's are soldered, so i cannot change them

blueroomelectronics · 27th October 2009, 09:05 PM

Is there any load on the PGC & PGD pins, how long is the programming cable?

reflex · 27th October 2009, 09:41 PM

There is nothing connected on pgc & pgd (please see attachment).
Programming cable is 3" long.

blueroomelectronics · 27th October 2009, 10:30 PM

The 1x6 ICD pinout is somewhat different than the Inchworms. Did you modify your Inchworm cable?
Yours is
VPP,GND,+5,NC,PGC,PGD
Inchworm is
VPP,+5,GND,PGD,PGC

reflex · 27th October 2009, 10:40 PM

yes, i modified it

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27th October 2009, 05:39 PM	#2
blueroomelectronics	Hmm sounds like it's not connected to the target properly. How do you have it connected to the 18F2580? Is it in circuit or on a breadboard? __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com/

27th October 2009, 06:01 PM	#3
reflex	It's connected in a circuit. Icd2 works with it...

27th October 2009, 06:16 PM	#4
blueroomelectronics	Hmm, I changed the final VPP cap on some kits to 4.7uF. It may be too small and I'll have to use 22uF like on the older kits. Do you have a spare 10uF 16V cap (just parallel it across) __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com/

27th October 2009, 06:42 PM	#5
blueroomelectronics	C12 is the cap in question. __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com/

27th October 2009, 07:57 PM	#6
reflex	i only have 15µ, but the error is the same. I've also replaced it with a 22µ and more errors was the result

27th October 2009, 08:28 PM	#7
blueroomelectronics	Hmm, do you have MPLAB set to automatically download new firmware? Which version of MPLAB are you using? Is the target running at 5V? __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com/ Last edited by blueroomelectronics; 27th October 2009 at 08:28 PM.

27th October 2009, 08:34 PM	#8
reflex	i've tried it with Mplab 8.36 and 7.6 Firmware download happens, when i switch to a different Mplab. Target is running on 5V. When programming it only writes 3 commands: first is correct, second is wrong and fails during verify, and the third is also wrong. It's also the same, if i try to program only the configuration area.

27th October 2009, 08:44 PM	#9
blueroomelectronics	Do you have other PICs with the same problem? __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com/

27th October 2009, 08:50 PM	#10
reflex	i have 2 identical prototype boards here - on both the same problem... the pic's are soldered, so i cannot change them

27th October 2009, 09:05 PM	#11
blueroomelectronics	Is there any load on the PGC & PGD pins, how long is the programming cable? __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com/

27th October 2009, 09:41 PM	#12
reflex	There is nothing connected on pgc & pgd (please see attachment). Programming cable is 3" long. Attached Thumbnails

27th October 2009, 10:30 PM	#13
blueroomelectronics	The 1x6 ICD pinout is somewhat different than the Inchworms. Did you modify your Inchworm cable? Yours is VPP,GND,+5,NC,PGC,PGD Inchworm is VPP,+5,GND,PGD,PGC __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com/