[SOLVED] Downloading flash from atmega1284p via avrdude

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hi. i've been trying download code atmega1284p protection copy against future upgrades. i've been using avrdude command (and variations) such as:

avrdude -p atmega1284p -p /dev/ttyusb0 -c stk500v2 -b xxxxx -u flash:r:dump.hex:i

i've tried various -b baud rates. i've tried -f flag. i'm unsure if -c field correct chip.

the usb device correct. normal usb communications board fine. i've tried hitting reset button on board during , before command (red light blinks reset).

in cases, i'm getting timeouts avrdude. ideas? thanks!

the port ttyusb0 what? isp programmer or usb/serial?

if trying download via serial port, bootloader must support this.


Arduino Forum > Using Arduino > Microcontrollers > [SOLVED] Downloading flash from atmega1284p via avrdude


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