PIC12F675 Verify Failed - Electronic Circuits Projects Diagrams Free

Suraj143 · 5th December 2007, 03:55 AM

I'm trying to program PIC12F675 with internal RC oscillator & MCLR OFF but it always giving an error in winpic800.Telling that you have a bandwidth error.

My programmer is modified JDM type VPP controllable one.

The default factory calliborated value was 3440 (retlw 40).

What do I have to do please help me.

Code:

	List		P=12F675
	#include	<P12F675.INC>
	errorlevel	-302
	__CONFIG   _CP_OFF & _CPD_OFF & _BODEN_OFF & _MCLRE_OFF & _WDT_OFF & _PWRTE_OFF & _INTRC_OSC_NOCLKOUT


	call	0x3FF
	BSF 	STATUS, RP0
	movwf	OSCCAL
	clrf 	TRISIO					
	BCF 	STATUS, RP0
	goto	Start


	org	0x3FF
	movlw	20h

	end

blueroomelectronics · 5th December 2007, 04:02 AM

Does the WinPIC800 software know how to handle VPP before VDD? I've not seen a JDM with that option.

Suraj143 · 5th December 2007, 04:03 AM

I don't know Lol then what software do I have to use?

Pommie · 5th December 2007, 04:04 AM

Why, when you know that the factory calibration value is retlw 0x40, do you put movlw 0x20 in the calibration location. This will just cause your code to crash.

I don't know WinPic800.

Mike.

Pommie · 5th December 2007, 04:06 AM

I always found WinPic to be the most reliable with JDM type programmers.

Mike.

Suraj143 · 5th December 2007, 04:09 AM

Hi Mike I tried 0x40 also but didn't help me.
Doing a long coding for 5 hours continuously this gives me a damn error.I'm really upset I went to sleep.But this morning also same problem.

Pommie · 5th December 2007, 04:15 AM

Quote:

Originally Posted by Suraj143

Hi Mike I tried 0x40 also but didn't help me.

But movlw 0x40 will also crash your code. It has to be retlw 0x40.

Mike.

blueroomelectronics · 5th December 2007, 04:26 AM

Why are you writing your own calibration value? That value should be preprogrammed at the factory.

PS I misread your original post, yes it appears most JDM can control VPP. *they don't seem to control VDD.

Suraj143 · 5th December 2007, 04:27 AM

Quote:

Originally Posted by Pommie

But movlw 0x40 will also crash your code. It has to be retlw 0x40.

Mike.

A good point I'll try & see.BTW I'm going to try your WINPIC also.Thanks for that.

Pommie · 5th December 2007, 04:34 AM

I modified a JDM programmer by powering Vdd with a resistor & 5V zener connected to Vpp. This had the effect of switching Vpp before Vdd. Simple but effective. I think this only works on JDMs with a proper power supply.

This circuit does the same thing.

Mike.

Suraj143 · 5th December 2007, 04:34 AM

Quote:

Originally Posted by blueroomelectronics

Why are you writing your own calibration value? That value should be preprogrammed at the factory.

PS I misread your original post, yes it appears most JDM can control VPP. *they don't seem to control VDD.

The 675 template shows that it needs to call OSCCAL value when using internal oscillator.The original value was deleted by me so I copied with another new 675 PIC & place in the 0x3FF location.

The value was 3440.

Suraj143 · 5th December 2007, 04:43 AM

Quote:

Originally Posted by Pommie

I modified a JDM programmer by powering Vdd with a resistor & 5V zener connected to Vpp. Mike.

That means your MCLR pins voltage is 5V? not 13V? OMG?

SPDCHK · 5th December 2007, 04:59 AM

Code:

INIT				;
	BCF     STATUS,RP0	; select register bank 0
	CLRF	GPIO		; Init GPIO
	movlw	07h		; set GP<2:0> to
	movwf	CMCON		; digital IO
	BSF     STATUS,RP0	; BANK 1
	clrf	ANSEL		; Digital I/O
	MOVLW	B'00000010'	; Set GP<1> Input, 
	MOVWF	TRISIO		; Set GP<0> as Output
	clrf	WPU		; Clear Weak pullup
	bsf	IOCB,IOCB1	; Interrupt on change enable
        call    h'3FF'          ; You have to manually enter this value in the calibration input
        movwf   OSCCAL          ; h'3FF' is where the calibration value is stored. Usually 34xx

	BCF     STATUS,RP0	; BANK 0
	movlw	D'250'		; Time in machine cycles to delay
	movwf	Niks1		; before PIC goes to SLEEP

I use the PICALLW programmer, and it allows a field where the calibration code can be entered (usually 34xx). With the code as shown above, the calibration value is then entered during programming.

Suraj143 · 5th December 2007, 05:05 AM

Quote:

Originally Posted by SPDCHK

I use the PICALLW programmer, and it allows a field where the calibration code can be entered (usually 34xx). With the code as shown above, the calibration value is then entered during programming.

Hi what software you using?

SPDCHK · 5th December 2007, 05:38 AM

Sorry, what I meant was that I use the PICALLW software with a programmer hardware unit I ordered as a kit, (the PICALL programmer)

Here's the link http://www.picallw.com/

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Title	Starter	Forum	Replies	Latest
IC-Prog 1.06 - Verify failed at address 0000h - bug	pdfruth	Micro Controllers	9	2nd November 2007 07:24 PM
Question about Inchworm+	Quan	Micro Controllers	54	28th October 2007 01:21 AM
verify failed at address 0000h with IC-Prog	cucamunga	Micro Controllers	41	7th January 2007 11:37 AM
IC Prog error :" Verify failed at address 0x0000"	G-nome	Micro Controllers	11	28th January 2004 09:12 PM
12C508 problems: Verify failed at code address 0000h !	faz666	Micro Controllers	4	29th July 2003 01:13 PM

5th December 2007, 03:55 AM	(permalink)
Suraj143	PIC12F675 Verify Failed I'm trying to program PIC12F675 with internal RC oscillator & MCLR OFF but it always giving an error in winpic800.Telling that you have a bandwidth error. My programmer is modified JDM type VPP controllable one. The default factory calliborated value was 3440 (retlw 40). What do I have to do please help me. Code: List P=12F675 #include <P12F675.INC> errorlevel -302 __CONFIG _CP_OFF & _CPD_OFF & _BODEN_OFF & _MCLRE_OFF & _WDT_OFF & _PWRTE_OFF & _INTRC_OSC_NOCLKOUT call 0x3FF BSF STATUS, RP0 movwf OSCCAL clrf TRISIO BCF STATUS, RP0 goto Start org 0x3FF movlw 20h end Last edited by Suraj143; 5th December 2007 at 03:58 AM.

5th December 2007, 04:02 AM	(permalink)
blueroomelectronics	Does the WinPIC800 software know how to handle VPP before VDD? I've not seen a JDM with that option. __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com

5th December 2007, 04:03 AM	(permalink)
Suraj143	I don't know Lol then what software do I have to use?

5th December 2007, 04:04 AM	(permalink)
Pommie	Why, when you know that the factory calibration value is retlw 0x40, do you put movlw 0x20 in the calibration location. This will just cause your code to crash. I don't know WinPic800. Mike.

5th December 2007, 04:06 AM	(permalink)
Pommie	I always found WinPic to be the most reliable with JDM type programmers. Mike.

5th December 2007, 04:09 AM	(permalink)
Suraj143	Hi Mike I tried 0x40 also but didn't help me. Doing a long coding for 5 hours continuously this gives me a damn error.I'm really upset I went to sleep.But this morning also same problem.

5th December 2007, 04:26 AM	(permalink)
blueroomelectronics	Why are you writing your own calibration value? That value should be preprogrammed at the factory. PS I misread your original post, yes it appears most JDM can control VPP. *they don't seem to control VDD. __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com

5th December 2007, 04:34 AM	(permalink)
Pommie	I modified a JDM programmer by powering Vdd with a resistor & 5V zener connected to Vpp. This had the effect of switching Vpp before Vdd. Simple but effective. I think this only works on JDMs with a proper power supply. This circuit does the same thing. Mike.

5th December 2007, 05:38 AM	(permalink)
SPDCHK	Sorry, what I meant was that I use the PICALLW software with a programmer hardware unit I ordered as a kit, (the PICALL programmer) Here's the link http://www.picallw.com/