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To check whether optiboot_dx is working with avrdude for <=64KB AVR DA/DB parts #1165
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As of now both @MCUdude and I have no <=64KB AVR DA/DB parts for testing. We have the AVR64DD32 but unfortunately DxCore and Optiboot_dx do not work with AVR DD parts yet. |
BTW, I have tested optiboot_x for ATmega4808/4809 (MegaCoreX) and ATtiny1627 (megaTinyCore). Previously I have also tested optiboot_dx with the AVR128db48 (DxCore). So the remaining one to be done is for AVR Dx parts with <=64k Flash. I have ordered some parts and I may be able to carry out some test later (say in the end of this month). |
I can confirm that optiboot_dx works with the AVR64DD32 and the upstream version of Avrdude:
EEPROM write does not work, but this is to be expected since the bootloader is built without EEPROM support to fit within 512 bytes:
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Wonderful. Just wondering which bootloader hex file you are using. I am getting another AVR64DD32 Curiosity Nano after the first one died. |
I flashed the These are the fuse settings:
Wouldn't it be cheaper to just replace the AVR-DD chip? They're fairly easy to solder |
The shipment cost is killing factor to get chips here in Singapore. But I will try to get the raw chips as well. |
Now I will close this issue since it is confirmed that git main now works well after the merge of PR #1140. |
I got the new AVR64DD32 Curiosity Nano and now it works (DxCore 1.5.1 beta).
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Continuation of the following two.
We need to find a <=64KB AVR DA/DB part to confirm the remaining question mark.
Note: all the current parts supported by optiboot_x (megaTinyCore and MegaCoreX) have flash size not greater than 64KB.
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