Once a system is deployed to the field, it may require updates in the future to either add features or fix issues in the application. If the systems are connected on a communication bus, updates can be performed over this bus. This application note describes the concept of field updates to systems that use Cypress’ Powerline communication (PLC) solution and explains how to write application code such that it can be remotely updated using the Powerline link. The attached code examples contain transmitter side firmware that sends out user application code over Powerline, and receiver side firmware that receives data over Powerline and reconfigures itself to the new application.
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