Bus endpoint isolation

An electronic device including:

• a bus having communication channels corresponding to a plurality of endpoints on the bus, each communication channel segment of the communication channels having a respective switch;
• a switch control mechanism;
• and
• a controller including:
• an interface to couple to a bus having a first communication channel including:
• a first endpoint on a first communication channel segment of a first communication channel having a first switch;
• and
• a second endpoint on a second communication channel segment having a second switch;
• a processing resource;
• and
• a memory resource storing non-transitory instructions executable by processing resource to:
• identify an address conflict between the first endpoint and the second endpoint;
• select the first endpoint to receive a message;
• cause, via the switch control mechanism, the second switch to open;
• send the message to the first endpoint via the first communication channel segment and the first switch;
• and
• write an inverse register value for a general-purpose input/output (GPIO) pin to cause the second switch to close,
• wherein the message includes a request to read data from the first endpoint or a request to write data to the first endpoint.

A non-transitory machine-readable medium storing instructions executable to:

• identify endpoints of a bus that have an address conflict;
• determine a respective status of switches on a plurality of communication channel segments associated with the identified endpoints;
• select, from the identified endpoints, a first endpoint to receive a message, wherein the first endpoint is associated with a first switch of a plurality of switches, and wherein the first switch is on a first communication channel segment;
• cause, via a switch control mechanism, all but the first switch of the plurality of switches to be open to isolate all but the first endpoint of the identified endpoints;
• responsive to causing all but the first switch to be open, send a message to the first endpoint;
• and
• revert the plurality of switches back to an initial position by sending an inverse SMB instruction post-pended to the message or writing an inverse register value for a GPIO pin.