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I2C Communication · Embedded Systems · Block Diagram

I2C Address Conflict Resolution with ADR Pin

סוג תרשים בלוקיםתקן Ogata / standard controls textbook conventionמנוע schematex-blockdiagramעודכן 7.7.2026
I2C Address Conflict Resolution with ADR Pin
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התרחיש

When two I2C sensors share the same default address, a microcontroller uses a dedicated GPIO to drive the ADR pin of one sensor, changing its address to a unique value and re-establishing communication.

מה מופיע בתרשים הזה

פענחו את ההחלטות שמאחוריו.

01

Use an ADR pin to change a conflicting sensor's address

02

Control the ADR pin via a microcontroller GPIO

03

Re-address the sensor to a new, non-conflicting I2C address

04

Resume normal data acquisition after re-addressing

Resolving address conflicts when multiple identical I2C devices must coexist on a single bus, especially in embedded systems with sensors that support hardware address selection via ADR pins.

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