MISC-TN-022: Advanced controller for DMX / RDM lighting applications
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HistoryEdit
| Version | Date | Notes |
|---|---|---|
| 1.0.0 | May 2022 | First public release |
IntroductionEdit
This Technical Note (TN for short) illustrates the concept of a custom product developed by DAVE Embedded Systems for a customer operating in the professional lighting market. It is a useful use case for showing some interesting technologies that can address common requirements in the world of embedded systems for industrial applications.
OverviewEdit
The following image depicts the product's block diagram.
As shown, the product features a rich set of I/O interfaces ranging from the DMX/RDM channels to the network connectivity.
The core of the systems is the Orca SoM, which in turn is built around the i.MX8M Plus system-on-chip. From the computational standpoint, two there are two domains running two different operating systems. In this regard, the resulting architecture is an example of heterogeneous asymmetric multi-processing as it is based on different types of cores, namely ARM Cortex-A53 and ARM Cortex-M7.
The system architect chose this implementation because it is convenient to satisfy the diversified product's requirements. In particular, the DMX/RDM subsystem must meet real-time requirements in order to be compliant with the DMX/RDM standards that would be hard to fulfill with