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UWB and Nearby Devices: Distance, Direction, Association, and Transport

Bluetooth can tell you that a device is probably nearby. Ultra-wideband can tell you that it is 42 centimeters away and 18 degrees to the right, until the person holding it turns and the direction…

  • UWB provides precise distance (42cm) and direction to devices
  • Apple's local transport incompatible with Google's UWB
  • Codename One framework offers distance, direction, association, transport packages

RV32I vs x86_32: How Branching Works Across Architectural Lines

Introduction In control flow operations—such as jumps ( jmp ), branch instructions, and function calls ( call )—the distinction between CISC and RISC architectures becomes immediately visible.

  • x8632 uses variable-length instructions with absolute 32-bit addresses in jump instructions
  • RISC-V's RV32I fixed-length instructions limit jump and call operations to 32-bit size
  • RISC-V uses jal/jalr and auipc instructions to enable long jumps across ±2 GiB address space

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