Testing Rotation Sensor Drivers with LEGO Robots and Other Adventures in the Linux...
summary
Remote development of Linux IIO drivers works but with limits: developers connect over VPN to a lab in France with Zed board + ADC evaluation board and a mini‑PC running Scopey and iio‑oscilloscope, control an m2k signal generator/logic analyzer and a custom power switch, SCP kernels and recover via serial. A LEGO‑built resolver rig provides precise rotation for validation; about 40 patches upstream a resolver driver. SPI offload yields 2 million samples/sec via hardware‑triggered DMA, but board swaps and electrical noise still require on‑site help.
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chapters (7)
- 0:00Linux IIO subsystem adventures
- 2:10Remote hardware setup for IIO
- 14:13First upstreamed driver with LEGO
- 22:11SPI offload for ADC sampling
- 28:47IIO backend for multi-hardware
- 30:36IIO DMA buffer for throughput
- 32:02Summary & Q&A
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