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# 2.4 Detection of PIO Collisions

Sometimes, depending on the hardware design of the evaluation/development boards, same I/O lines can be used in several components or used in several connectors. SHD implements a mechanism to allow the detection of these I/O lines.

In case of enabling I/O lines that are used in several connections in the evaluation board, the rest of the settings on the main board that use the same I/O lines will be set as read-only preventing them for being re-configured.