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MCUdude / MegaCore

Arduino hardware package for ATmega64, ATmega128, ATmega165, ATmega169, ATmega325, ATmega329, ATmega640, ATmega645, ATmega649, ATmega1280, ATmega1281, ATmega2560, ATmega2561, ATmega3250, ATmega3290, ATmega6450, ATmega6490, AT90CAN32, AT90CAN64 and AT90CAN128
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error while burning bootloader #191

Closed jeremi99 closed 1 year ago

jeremi99 commented 2 years ago

Hi. I probably have a common problem, but any help would be greatly appreciated. I like to use the Arduino IDE (Currently version 1.8.16) for my Arduino Boards and I was happy to see that I could also load my programs with the IDE on Stand alone AVR chips, after loading MegaCore Boards with the Arduino Board Manager. The difficulty I have is I cannot load the bootloader on my so called "Atmega128 minimum board". The ISP programmer I am using is a USBasp bought on Aliexpress. My USBasp programmer will connect to m128 with AVRDUDE only if I add the option -B4, as follows: AVRDUDE -p atmega128 -c usbasp -B4. It seems there is a SCK frequency problem if it is more than 187500 Hz. Could that be the reason I cannot load the Bootloader onto my m128 ? Or else, could I load the bootloader with AVRDUDE directly ? Thank you very much in advance for your valuable help. Jeremi99

jeremi99 commented 2 years ago

Hi. Further to my previous comment, I found that the file "optiboot_atmega128.hex" was missing in the the (windows 10) Arduino directory "arduino/hardware/arduino/avr/bootloaders/optiboot". Could that be a reason why the TOOLS>BURN BOOTLOADER option did not work and therefore "Error while burning bootloader" was shown ? Thank you very much once more.

MCUdude commented 2 years ago

Hi!

The default USBasp ISP clock is way too fast for a blank ATmega128 running at 1 MHz. If you want to bootload it through Arduino IDE, you can choose the USBasp (slow) (MegaCore) option under the Programmers menu. This option adds -B32, which is more than slow enough.

image

The Atmega128 bootloader file is supplied by this core, and can be found here: https://github.com/MCUdude/MegaCore/tree/master/avr/bootloaders/optiboot_flash/bootloaders/atmega128

MCUdude commented 1 year ago

OP didn't reply back. I'll assume the issue has been resolved.