Verification error after loading code by Serial #71

Borsoft73 · 2017-08-27T11:14:46Z

Hi! I'm building my project on Atmega128 chip using your bootloader. Bootloader was load properly by USBASP and I even can see it in FLASH through Avrdude terminal mode from address 0xFC00 (as I remember). Then I faced an issue during loading my program by Serial through USB-UART (CH340 chip). It seems that Arduino IDE connects to Atmega and I see Avrdude writing progress bars but then it fails on verification step:

avrdude: verification error, first mismatch at byte 0x0000
0xff != 0x0c
avrdude: verification error; content mismatch

It seems that my sketch code was not recorded to Atmega... If I loading the code through programmer by ICSP - it works well.
Here is the Avrdude log:

/Applications/Arduino.app/Contents/Java/hardware/tools/avr/bin/avrdude -C/Users/dmitrij/Library/Arduino15/packages/MegaCore/hardware/avr/2.0.0/avrdude.conf -v -patmega128 -carduino -P/dev/cu.wchusbserial1420 -b115200 -D -Uflash:w:/var/folders/18/60_7xyc92138x6vhc69t25zc0000gn/T/arduino_build_113404/Blink.ino.hex:i

avrdude: Version 6.3, compiled on Jan 17 2017 at 12:01:35
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2014 Joerg Wunsch
     System wide configuration file is "/Users/dmitrij/Library/Arduino15/packages/MegaCore/hardware/avr/2.0.0/avrdude.conf"
     User configuration file is "/Users/dmitrij/.avrduderc"
     User configuration file does not exist or is not a regular file, skipping

     Using Port                    : /dev/cu.wchusbserial1420
     Using Programmer              : arduino
     Overriding Baud Rate          : 115200
     AVR Part                      : ATmega128
     Chip Erase delay              : 9000 us
     PAGEL                         : PD7
     BS2                           : PA0
     RESET disposition             : dedicated
     RETRY pulse                   : SCK
     serial program mode           : yes
     parallel program mode         : yes
     Timeout                       : 200
     StabDelay                     : 100
     CmdexeDelay                   : 25
     SyncLoops                     : 32
     ByteDelay                     : 0
     PollIndex                     : 3
     PollValue                     : 0x53
     Memory Detail                 :

                              Block Poll               Page                       Polled
       Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack
       ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
       eeprom         4    12    64    0 no       4096    8      0  9000  9000 0xff 0xff
       flash         33     6   128    0 yes    131072  256    512  4500  4500 0xff 0xff
       lfuse          0     0     0    0 no          1    0      0  9000  9000 0x00 0x00
       hfuse          0     0     0    0 no          1    0      0  9000  9000 0x00 0x00
       efuse          0     0     0    0 no          1    0      0  9000  9000 0x00 0x00
       lock           0     0     0    0 no          1    0      0  9000  9000 0x00 0x00
       calibration    0     0     0    0 no          4    0      0     0     0 0x00 0x00
       signature      0     0     0    0 no          3    0      0     0     0 0x00 0x00

     Programmer Type : Arduino
     Description     : Arduino
     Hardware Version: 3
     Firmware Version: 6.2
     Vtarget         : 0.3 V
     Varef           : 0.3 V
     Oscillator      : 28.800 kHz
     SCK period      : 3.3 us
avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.02s

avrdude: Device signature = 0x1e9702 (probably m128)
avrdude: reading input file "/var/folders/18/60_7xyc92138x6vhc69t25zc0000gn/T/arduino_build_113404/Blink.ino.hex"
avrdude: writing flash (1240 bytes):

Writing | ################################################## | 100% 0.34s

avrdude: 1240 bytes of flash written
avrdude: verifying flash memory against /var/folders/18/60_7xyc92138x6vhc69t25zc0000gn/T/arduino_build_113404/Blink.ino.hex:
avrdude: load data flash data from input file /var/folders/18/60_7xyc92138x6vhc69t25zc0000gn/T/arduino_build_113404/Blink.ino.hex:
avrdude: input file /var/folders/18/60_7xyc92138x6vhc69t25zc0000gn/T/arduino_build_113404/Blink.ino.hex contains 1240 bytes
avrdude: reading on-chip flash data:

Reading | ########################################Произошла ошибка при загрузке скетча
########## | 100% 0.34s

avrdude: verifying ...
avrdude: verification error, first mismatch at byte 0x0000
0xff != 0x0c
avrdude: verification error; content mismatch

avrdude done. Thank you.

Do you have any thoughts on it?

The text was updated successfully, but these errors were encountered:

MCUdude · 2017-08-27T17:40:20Z

Hi!
I've never experienced any issues while uploading using a USB to serial adapter. Do you have another chip/board to test with? You might want to double check that the fuses is correct

Borsoft73 · 2017-08-31T07:28:42Z

I'm stuck, still no progress...:( Bootloader don't want to write the code into the chip.

I tried 3 another Atmega128A chips and 1 another PC.
LED on PB5 is flashing so bootloader is in place and working.
USB-UART - I tried CH340 and CP2102 based devices. They work well with Atmega328 boards.
UART connection seems also working as avrdude starting upload and can read chip signature
2x100nF caps Vcc-Gnd are in place, Reset pull-up 10k (I tried also 47k as mentioned in datasheet), 100nF cap on DTR to Reset line
Fuses:
LFUSE - 0x3F
HFUSE - 0xC6
EFUSE - 0xFF
LOCK - 0x0F
I tried with HFUSE 0xC4 (I found that bootloader starts from 0xFC00) and LOCK 0x3F (fully unlocked) - no result.
I noted that upload starts even without DTR signal - usually other boards waiting for LOW on DTR line or manual Reset to start upload - looks strange

Here is the schematics I use: https://easyeda.com/normal/Schematic-daa7aab244404e378c8103818bf43c53

Any other ideas?

Borsoft73 · 2017-09-05T14:33:24Z

Do I have any chance to get some feedback?

MCUdude · 2017-09-05T23:27:27Z

I'm sorry, but I've been on business trip for a whole week. I'll dig into it in a couple of days

MCUdude · 2017-09-07T17:54:40Z

I'm not able to view the EasyEDA schematic. All I see is the logo.. please post a picture the schematic instead. A photo of your actual board would also be nice 🙂

Like I've already mentioned; I've never seen this before. Using USB to serial uploading have always worked perfectly without any errors. BTW what kind of programmer are you using?

Borsoft73 · 2017-09-07T21:54:51Z

Hi! I'm happy that you are here again😊
Here is my schematic:

And here is the board itself with some marks:

As you may see there is no USB-UART chip on it so far, so I used external adapters on CP2102 and CH340 for serial connection.
I'm using USBASP for flashing and fuses setting.

MCUdude · 2017-09-08T10:09:28Z

hmm. I don't see any obvious hardware issues. Your schematic looks correct. Can you get avrdude to verify the current fuse settings, both low, high, extended and lockfuse?

BTW have you disconnected the programmer when uploading with the USB to serial adapter?

Borsoft73 · 2017-09-08T20:11:23Z

Here are the fuses which I found in the chip after MegaCore installation: Low = 0xBF, High = 0xC6, Ext = 0xFF, Lock = 0x0F.
Bootloader settings I choose in Arduino IDE: Atmega128, BOD = 2.7V, Clock = Ext. 16MHz, LTO disabled.
LED on PB5 is flashing.
Serial itself is working well, I checked it with AnalogReadSerial example sketch.
But the same behavior during sketch upload by Serial:

Reading | ################################################## | 100% 0.68s

avrdude: verifying ...
avrdude: verification error, first mismatch at byte 0x0000
0xff != 0x0c
avrdude: verification error; content mismatch

avrdude done. Thank you.

the selected serial port
does not exist or your board is not connected

And yes, I disconnected a programmer when uploading by UART

Borsoft73 · 2017-09-18T19:34:44Z

And what about DTR behaviour? Is it normal if bootloader starting to receive data even without DTR line?

MCUdude · 2017-09-18T21:22:31Z

Optiboot is able to start receiving data without the DTR line, but only once. After a program is received, it will never stay in bootloader mode forever, like it does when you have just burned the bootloader.

MCUdude · 2017-09-18T21:24:14Z

If you want you can try to use the older version of optiboot to see if it works better. This bootloader was "shipped" with MegaCore v1.0.1

Borsoft73 · 2017-12-14T20:39:31Z

I'm here back again! The same with 1.0.1 and all other versions.
You can see how it looks here: https://youtu.be/W3Efb8uDyqI

Also I found similar behaviour with your SerialReadWrite sketch. It runs, serial connection is working, but it can't write anything to the Flash. Here is how it works: https://youtu.be/45vlQO1n-Yg, and here is how the Flash dump looks after: https://youtu.be/F0FbI3GkcaA.

What do you think?

MCUdude · 2017-12-14T20:50:45Z

You're not able to write to the flash memory without the bootloader installed. I have no idea why uploading using Serial doesn't work. @majekw do you have any idea why this happen?

Borsoft73 · 2017-12-18T12:37:04Z

Tried SerialReadWrite sketch compiled with bootloader - the same result - it can not write to the flash

Borsoft73 · 2018-01-05T15:40:50Z

Hi @majekw, may be you can help me with my issue? Still no progress and I will appreciate any ideas…

Borsoft73 · 2018-01-09T20:31:18Z

SOLVED!
Just switched from USBISP to AVRISP Mk2 programmer.

MCUdude · 2018-01-09T20:31:48Z

Really?!

MCUdude · 2018-01-09T20:32:35Z

You need to re-program you USBasp and check for sure. I use the USBasp as one of my main programmers, and it has never failed me.

X3msnake · 2018-01-10T00:00:35Z

What usbisp are you using. Is it the chinese version. If so you should take a look at this git i fixed mine with it. https://github.com/aleh/usbisp

majekw · 2018-01-10T16:40:17Z

Better late than never :-)
I also heard about some USBasp which have problems with devices with more flash. I'm glad that this is not bootloader problem, because everything from description looked fine.

Borsoft73 · 2018-01-10T17:44:34Z

Yes, probably it has old firmware. But I was confused as it looked like both bootloader and USBasp works properly - LED on PB5 flashed and I had no problems with loading my software (~70kB) through this USBasp... So anyway thanks to everybody for support!

prajwalreddy7 · 2021-05-14T06:36:14Z

I had the same problem getting that Verification error and content mismatch all the time for code above 50 bytes (Blink code works fine), I m using USBasp programmer, So should I buy the new one?

Thank You.

Borsoft73 · 2021-05-14T08:52:23Z

I had the same problem getting that Verification error and content mismatch all the time for code above 50 bytes (Blink code works fine), I m using USBasp programmer, So should I buy the new one?

Thank You.

I switched to AVRIsp mkII programmer - works fine for me, no issues.

Borsoft73 closed this as completed Jan 9, 2018

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Verification error after loading code by Serial #71

Verification error after loading code by Serial #71

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Verification error after loading code by Serial #71

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