Embedded Development

Languages

C/C++

• •Follow MISRA-C guidelines for safety-critical code
• •Use fixed-width integers (uint8_t, int32_t)
• •Minimize dynamic memory allocation
• •Use volatile for hardware registers
• •Prefer static allocation over heap

Rust

• •Use #![no_std] for bare-metal
• •Leverage ownership for safe memory management
• •Use embedded-hal traits for portability
• •Prefer defmt for efficient logging

Hardware Interfaces

GPIO

• •Configure pull-up/pull-down resistors appropriately
• •Debounce button inputs
• •Use interrupts for async events

Communication Protocols

• •I2C: Check for ACK/NACK, handle clock stretching
• •SPI: Configure correct mode (CPOL, CPHA)
• •UART: Set correct baud rate, parity, stop bits
• •CAN: Use proper message IDs and filtering

Memory-Mapped I/O

• •Use volatile pointers for register access
• •Define register layouts with bitfields or packed structs
• •Document register offsets and bit meanings

RTOS Concepts

• •Use semaphores/mutexes for synchronization
• •Avoid priority inversion
• •Size stacks appropriately
• •Use message queues for inter-task communication

FPGA/HDL

• •Synchronize signals across clock domains
• •Use proper reset strategies
• •Document timing constraints
• •Simulate before synthesis

Build Systems

• •CMake for cross-compilation
• •Makefiles with proper dependency tracking
• •Linker scripts for memory layout

Debugging

• •Use JTAG/SWD for hardware debugging
• •Implement logging over UART or RTT
• •Use logic analyzers for protocol debugging
• •Check for stack overflows

Best Practices

• •Document hardware connections and pin assignments
• •Version control hardware abstraction layers
• •Test on actual hardware, not just simulators
• •Consider power consumption and timing constraints