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Topic: Programming Bootloader to Blank Atmega328P-AU Issues (Read 111 times) previous topic - next topic

radensb

Greetings,

SPOILER - I got it to work, but not how I wanted and I don't understand why!

I wanted to put the Arduino bootloader on blank Atmega328P devices purchased from DigiKey. I purchased a TQFP32 to DIP32 adapter to pair up with my AVR-Pocket Programmer. I then built a PCB that routed the VCC, GND, SCLK, MISO, MOSI, and RESET lines from the programmer to the adapter. I followed the instructions here to use the internal 8MHz clock to program the bootloader based on the section "Minimal Circuit (Eliminating the External Clock)", but I keep getting the following:


Code: [Select]
C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avrdude -CC:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf -v -patmega328p -cusbtiny -e -Ulock:w:0x3F:m -Uefuse:w:0x05:m -Uhfuse:w:0xDA:m -Ulfuse:w:0xE2:m

avrdude: Version 6.3-20171130
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2014 Joerg Wunsch

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

         Using Port                    : usb
         Using Programmer              : usbtiny
avrdude: usbdev_open(): Found USBtinyISP, bus:device: bus-0:\\.\libusb0-0001--0x1781-0x0c9f
         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 : USBtiny
         Description     : USBtiny simple USB programmer, https://learn.adafruit.com/usbtinyisp
avrdude: programmer operation not supported

avrdude: Using SCK period of 10 usec
avrdude: AVR device initialized and ready to accept instructions

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

avrdude: Device signature = 0x000000 (retrying)

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

avrdude: Device signature = 0x000000 (retrying)

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

avrdude: Device signature = 0x000000
avrdude: Yikes!  Invalid device signature.
         Double check connections and try again, or use -F to override
         this check.


avrdude done.  Thank you.

Error while burning bootloader.


I finally got it to work by slapping on a 16MHz crystal on pins 7 and 8 (XTAL1 and XTAL2) - buy why!? I would have just put one on my programmer PCB, but I read on many sites that you could program the device without it (including the Arduino site I linked to). Again, I am using blank devices fresh from the reel from DigiKey. Running Arduino IDE 1.8.9.

Thanks for the help!

-Ryan
.tb_button {padding:1px;cursor:pointer;border-right: 1px solid #8b8b8b;border-left: 1px solid #FFF;border-bottom: 1px solid #fff;}.tb_button.hover {borer:2px outset #def; background-color: #f8f8f8 !important;}.ws_toolbar {z-index:100000} .ws_toolbar .ws_tb_btn {cursor:pointer;border:1px solid #555;padding:3px} .tb_highlight{background-color:yellow} .tb_hide {visibility:hidden} .ws_toolbar img {padding:2px;margin:0px}
.tb_button {padding:1px;cursor:pointer;border-right: 1px solid #8b8b8b;border-left: 1px solid #FFF;border-bottom: 1px solid #fff;}.tb_button.hover {borer:2px outset #def; background-color: #f8f8f8 !important;}.ws_toolbar {z-index:100000} .ws_toolbar .ws_tb_btn {cursor:pointer;border:1px solid #555;padding:3px} .tb_highlight{background-color:yellow} .tb_hide {visibility:hidden} .ws_toolbar img {padding:2px;margin:0px}

Budvar10

#1
Nov 21, 2020, 03:20 pm Last Edit: Nov 21, 2020, 03:22 pm by Budvar10
Quote
I finally got it to work by slapping on a 16MHz crystal on pins 7 and 8 (XTAL1 and XTAL2) - buy why!?
It is probably because the option you have chosen for burning the bootloader contains the fuse settings for standard Arduino UNO with external clock source. Fuses goes first and it "bricks" ATmega immediately. The MCU cannot start without external crystal or clock signal, after reset. That is why the all readings are zero.

BTW: Raw chip has internal clock set by default.
Arduino clone with ATmega1284P   http://forum.arduino.cc/index.php?topic=277260.0

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