Using the C language to program the am335x PRU
Still RelevantIntermediate
Introduction Some weeks ago, I published an article on how we used the PRU to implement a power supply control loop having hard realtime constraints: http://www.embeddedrelated.com/showarticle/586.php Writing this kind of logic in assembly...
Summary
This 2014 blog by Fabien Le Mentec shows how to program the TI AM335x PRU using the C language, explaining the trade-offs versus assembly and the practical steps to build real-time control logic. Readers will learn toolchain setup, memory and I/O mapping, and how to integrate PRU code with Embedded Linux for deterministic tasks.
Key Takeaways
- Understand PRU architecture, constraints, and when C is appropriate versus assembly.
- Use the PRU C toolchain and build flow to compile and load PRU programs.
- Map PRU local and shared memory and perform deterministic I/O from C code.
- Integrate PRU firmware with Embedded Linux (remoteproc/rpmsg) to coordinate real-time and non-real-time tasks.
Who Should Read This
Embedded engineers familiar with Linux and microcontrollers who need to implement hard real-time control on AM335x/BeagleBone-class hardware using C.
Still RelevantIntermediate
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