Demo time! As test setup, I’m going to use an F4-based STM32 µC, since it has two CAN bus controllers. It’s easier to write a quick test for a single system. And since I have these boards lying around, that’s what I’ll use: a 32F429-DISCO with an Open429Z-D:
The breakout board adds a USB-to-serial interface and headers to plug in two CAN bus drivers (for level translation, as described in part 1).
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