![]() Since a bootloader is firmware, it will use some of the flash memory on your microcontroller. The first, and primary reason, not to use a bootloader has to do with flash memory. ![]() There are some occasions where the components in the circuit you are building may interfere with the upload process. With a bootloader, I can program my ATtiny85 while still connected to the circuit. At the very least, it gets old, but many times I have bent pins and had to straighten them out with a pair of needle-nose pliers. When it finishes loading the firmware, I pull it out of the programmer and then place it back into the circuit. When I program my ATtiny85, I have to pull it out of the circuit and insert it into my programmer. This web site also contains detailed and summarized versions of the data sheets for each microcontroller.Ī bootloader makes prototyping easier because the code can be loaded to the microcontroller directly from the Arduino IDE using a basic serial connection.
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