avrdude: AVR device initialized and ready to accept instructions

Reading |                                                    | 0% 0.00savrdude: stk500v2_command(): command failed
avrdude: stk500v2_cmd(): failed to send command
avr_read(): error reading address 0x0000
    read operation not supported for memory "signature"
avrdude: error reading signature data for part "ATmega2560", rc=-2
avrdude: error reading signature data, rc=-1

avrdude done.  Thank you.