Carprog Mcu Reflash Step by step

**soimu** · 12th April, 2013, 08:36 PM

Hello at me it turned sew AT91SAM by using SAMBA Atmel SAM-BA In-system Programmer by USB . I used the manual for restoring JLINK V8 china clone . I am a great hurry and established at91sam256 carprog PCB jlink . after programming set in at91sam256 carprog and at me all earned. I did not have time to make detailed instructions I will try to do. to work with samba you need to install quartz 18.432 MHz

**soimu** · 12th April, 2013, 09:31 PM

1. Stuck in the USB cord and closed the tweezers to place the first jumper 30 seconds - so that the end to clear the memory. Disconnect the cord.
2. Stuck in the USB-jumper closed the second for 30 seconds - restored loader.

**Nike** · 12th April, 2013, 10:14 PM

Confirmed! Problem with Chinese clone causes 74HC125 if the A9 test connector all results "OK", but still can not read most of EEPROM and MCU.

If you do not read 24Cxx, 93Cxx and other series EEPROM, or reads, but with bugs and verification is not good, it is necessary to replace all 74HC.
I replaced all old 74HC125 and put 74HCT125D (Philips) and the device work properly.

Problem creating level CMOS (HC series). When you put the HCT series (TTL level) communication regularly, without fail.

In some cases the problem can generate power devices with a USB port, so after replacing HCT (TTL) is very desirable to bring external power 12V CarProg.

Voltage drop that is generated on the USB cable and within the device will not be enough for TTL HC series in some cases.

HC series works in the range from 2.6 to 5.0 V - Vcc
HCT series works in the range from 4.5 to 5 V - Vcc

When you use HCT series is TTL level ports in most cases guarantees proper communication with external eeprom, mcu ....

I hope I have helped someone with this.

Cheers ..

**cubica1** · 13th April, 2013, 12:07 AM

Originally Posted by cosmind

Attachment 192206 Attachment 192205

Dear Cosmind, is this schema Ok..working?? Tested??

Thanks a lot friend,

cuby

**cosmind** · 13th April, 2013, 08:36 AM

this is original schematic from codecard.lt

**einet** · 13th April, 2013, 04:01 PM

Hi all,

Make all what i say in my Post 132 and this resolve all problems!

http://www.digital-kaos.co.uk/forums...ml#post1882950

**thunderwinged** · 15th April, 2013, 12:55 AM

I used 74VHC125M and work 100% too

**servisi001** · 20th April, 2013, 11:55 AM

o try to erase but when i try to conect with jtag when i try to find targen say me this " unable to find target "

here are conection help me plz

**audiotek** · 22nd April, 2013, 06:33 PM

Originally Posted by einet

Hello,

My contribution for this helpful Thread!

After ask that I have problems with my carprog "pin8 have short to power"
I put hand on it and resolve this in the best way!.

So the problem is I bay a CLONE-FROM-CLONE-FROM-CLONE!!! With vary bad pcb layer
On the micro and in all pcb.
First to resolve my pin 8 problem whose the missing line on button pcb side and the hole whose not connected!
Restore all and pin 8 whose GONE GONE.
Second not read MCU Motorola or I2C or 95...., change all 74HC125D to 74HCT125M put a new cristal and condensators
And all missing resistors on my pictures and make the new connection on the power socket so that I have more space to close the carprog housing without bending the pcb.

And in the last modification is that isolate type! Is necessary IMPORTANT!, carprog have a separate GND and when put
The PCB back in the housing sometimes have problems in read some MCU or eeproms!
So I find out that the pcb in one side from the regulators make connection to the housing and make in
The same time short to the another side from the PCB!

Final Result
Without put double 74HC125M (8x) to read I2C or 95 or MCU without or with external power

My carprog read all without external power.

Hi friend, one question about your fix solution: there are 3 yellow condensators, you suggest to change them for 22mf but they are marked as "106 C" that means 10mf, in the older version of carprog the 3 condensators are 22mf but in the newest carprog they are marked as "106 C" = 10mf.

**einet** · 22nd April, 2013, 08:06 PM

I use 47microfards condensator

**audiotek** · 22nd April, 2013, 10:01 PM

Thanks, I replaced the 4 HC125D with 4 HCT125M, the 2 10pf condensators, the 5v regulator, the 12mhz oscillator, installed the missing condensators of 100pf, isolated the motherboard and now is working perfect, but I doesn't change the 10mf capacitors, anyway, the clone carprog is working well. Thanks for your help. BR...

**einet** · 23rd April, 2013, 08:30 PM

Oh i don t see it OK

**cosmind** · 24th April, 2013, 06:46 AM

message deleted

**Tereksaz** · 6th May, 2013, 09:19 AM

need help.
I want to change serial number CAR prog.
have a new full carprog Lib file for a new serial
I make change serial into dump, and add new lib file.
Run.
select any , for example airbag.
Software says - bad CRC!!!
but idont know, how calculate crc !
How can me do it?
Tereksaz

**obdrs** · 7th May, 2013, 12:34 PM

Originally Posted by audiotek

Thanks, I replaced the 4 HC125D with 4 HCT125M, the 2 10pf condensators, the 5v regulator, the 12mhz oscillator, installed the missing condensators of 100pf, isolated the motherboard and now is working perfect, but I doesn't change the 10mf capacitors, anyway, the clone carprog is working well. Thanks for your help. BR...

Can you tell me where did you buy HCT125M and what is manufacturer ?