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Can a hex file be sent without the bootloader?
The bootloader doesn’t delete itself. So you should use the hex WITHOUT bootloader. While flashing the Arduino over USB (UART) you use the bootloader in that case the bootloader doesn’t delete itself that’s why the Arduino IDE sends the file without the bootloader.
Can you create a hex file on Arduino?
The Arduino app generates a hex file but it is sort of hidden. The Arduino app generates a hex file but it is sort of hidden. Google arduino hex file https://stackoverflow.com/questi…
How to load HEX file with serial communication?
Here is an unsuccessful attempt to load the hex file with serial communication: The script is able to activate the bootloader on another port and connect. If I transfer all at once with ser2.write (fid.read ()), it semi-bricks the Arduino and I recover it by hitting the reset button just before the Arduino IDE installs the firmware.
Where to find the Code of the bootloader?
After having a look at the hex files, that’s true: you can find in the “with_bootloader” the code of the bootloader. The “why” gives the following answer: ” that’s because when the bootloader receive the code, it erases the flash so the installed bootloader destroy itself.
Can a serial Flash be used after ISP?
To be able to use the serial flashing after ISP, the hex with_bootloader can be used. I flash AVR over WiFi with esp8266’s core AVRISP library and I use the hex with_bootloader to have the option of flashing later over USB. Your Android app will use the serial flashing utilizing the bootloader. The bootloader doesn’t delete itself.
How to upload a hex file on Arduino?
A typical Arduino board configuration reserves space for the expected bootloader, so if the one you are using matches the size reserved in the chosen configuration, you should not have a conflict. Another option could be to combine the bootloader and sketch hex files, literally concatenating their contents one after the other into the same file.
Is it possible to flash a.hex file on an AVR MCU?
Is it possible to flash a .hex file on an AVR MCU, which already contains the Arduino bootloader, using an AVRISP mkII, without overwriting the bootloader?