Protocols

Coming soon — I2C, SPI, UART, CAN, MQTT deep dives with real oscilloscope captures and embedded code examples.

Planned topics:

• I2C: addressing, clock stretching, multi-master, debugging NACKs
• SPI: modes, DMA transfers, CS timing, Zephyr spi_transceive
• UART: baud rate errors, DMA vs interrupt, RS-485
• CAN bus: frames, arbitration, SocketCAN on Linux + Zephyr
• MQTT: QoS levels, retained messages, embedded broker options