Bootloader for Atmega328p U-KR

[dinesha77]

Hi there,
recently purchased some cheap pro-mini boards and I'm having issues with burning a bootloader for them.
This is 5v 16Mhz version.

D:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avrdude -CD:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf -v -patmega328p -cusbasp -Pusb -e -Ulock:w:0x3F:m -Uefuse:w:0xFD:m -Uhfuse:w:0xDA:m -Ulfuse:w:0xFF:m 

avrdude: Version 6.3-20190619
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2014 Joerg Wunsch

         System wide configuration file is "D:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf"

         Using Port                    : usb
         Using Programmer              : usbasp
         AVR Part                      : ATmega328P
         Chip Erase delay              : 9000 us
         PAGEL                         : PD7
         BS2                           : PC2
         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        65    20     4    0 no       1024    4      0  3600  3600 0xff 0xff
           flash         65     6   128    0 yes     32768  128    256  4500  4500 0xff 0xff
           lfuse          0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           hfuse          0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           efuse          0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           lock           0     0     0    0 no          1    0      0  4500  4500 0x00 0x00
           calibration    0     0     0    0 no          1    0      0     0     0 0x00 0x00
           signature      0     0     0    0 no          3    0      0     0     0 0x00 0x00

         Programmer Type : usbasp
         Description     : USBasp, http://www.fischl.de/usbasp/

avrdude: auto set sck period (because given equals null)
avrdude: AVR device initialized and ready to accept instructions

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

avrdude: Device signature = 0xffffff (probably .avr8x_mega) (retrying)

Reading | ################################################## | 100% 0.01s

avrdude: Device signature = 0xffffff (probably .avr8x_mega) (retrying)

Error while burning bootloader.
Reading | ################################################## | 100% 0.02s

avrdude: Device signature = 0xffffff (probably .avr8x_mega)
avrdude: Yikes!  Invalid device signature.
         Double check connections and try again, or use -F to override
         this check.

avrdude done.  Thank you.

Anyone have an idea?

[Juraj]

do you have an usbasp programmer? how did you wire it to the Mini?

[sterretje]

Aren't ProMinis supposed to come with a bootloader? Just curious as to why you want to burn a boot loader?

[dinesha77]

Yes I used a usbasp programmer.

[dinesha77]

@sterretje

Aren't ProMinis supposed to come with a bootloader? Just curious as to why you want to burn a boot loader?

Yes they are, for some reason bootloader stopped working. Meaning code upload from serial didnt work. So I though of burning the bootloader with the usbasp programmer, hence this issue came about.

[markd833]

If avrdude can't read the device signature, then it's likely a wiring issue between your ProMini and the usbasp programmer. As @Juraj asked back in post #2, what wires did you connect between the ProMini to the usbasp programmer, and where did you connect them?

[dinesha77]

@markd833 wiring issue cannot be because I have another board which I bought together with this this faulty one, and it has no issue burning the UNO bootloader with this same setup.

My programing tool setup;

[Juraj]

then check soldering of SPI pins on the bad Mini.

[dinesha77]

checked with a multi meter for continuity and re-soldered all the joints.
Have good continuity.
Issue is still same.
However, I realize the chip is warm and that is unusual right?
Guess I might have toasted the chip while playing around?

[Budvar10]

Yes, it's probably damaged.