Your question is SPI vs I2C vs UART vs CAN. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Explain the differences between SPI, I2C, UART, and CAN, and when you would choose each.
Compare their wiring, clocking, addressing, throughput, arbitration, error handling, topology, and typical failure modes. Include the security implications of shared buses and explain how you would validate a protocol choice in an embedded design.
