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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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"Burn Bootloader" that can only be used once #182

Closed 13507086298 closed 2 years ago

13507086298 commented 2 years ago

I write the Atmega128 via "Burn Bootloader" and it works fine, but after I upload the sketch once via UART1, the Bootloader doesn't work anymore, which means "Burn Bootloader" is a one-off in my actual use. I would like to know how to keep the "Burn Bootloader". Allows me to upload sketches via UART1 each time image image image image But I will go up the grass map again, there will be an error. image This indicates that Bootloader has failed. I can make UART1 get the sketch through UART1 by using Tools-> Burn Bootloader, and it will fail again after success.

tomaskovacik commented 2 years ago

did you implemented auto-reset circuit?

13507086298 commented 2 years ago

@tomaskovacik Thank you very much for your reminder, I have an Auto-reset circuit, but it doesn't seem to work, I can upload normally after I reset it manually, I will check my hardware circuit. thank you very much