3.4.3 Chip Programming

The 1x2 pin-header J2 marked as “PROG” is connected to the SAMG55J19 chip input pin (PA18) and GND. This header can be used to upgrade (using a bootloader binary file of the SAMG55J19) the PLC stack running on the SAMG55 by the USB/serial port. See Smart Energy: Serial Bootloader User Guide for more information.

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