Hardware Abstraction Layer

Platform-independent hardware interfaces and convenience layers. More...

Files
file	driver.hpp
	ADC driver interface - canonical types for MCU driver implementations.
file	handle.hpp
	ADC handle type for hardware abstraction.
file	scan.hpp
	ADC DMA scan interface — continuous multi-channel acquisition.
file	types.hpp
	ADC common types and enumerations.
file	driver.hpp
	Audio driver interface - canonical types and convenience functions.
file	types.hpp
	Audio common types and configuration.
file	input.hpp
	Button input convenience functions.
file	input.hpp
	CV input convenience functions.
file	voct.hpp
	V/Oct input convenience functions.
file	input.hpp
	Encoder input convenience functions.
file	driver.hpp
	GPIO driver interface - canonical types for MCU driver implementations.
file	handle.hpp
	GPIO handle type for hardware abstraction.
file	types.hpp
	GPIO common types and enumerations.
file	handle.hpp
	I2C handle type for hardware abstraction.
file	control.hpp
	ARM Cortex-M interrupt control primitives.
file	types.hpp
	Interrupt system types and enumerations.
file	output.hpp
	RGB LED output convenience functions.
file	barrier.hpp
	ARM Cortex-M memory barrier primitives.
file	input.hpp
	Pot input convenience functions.
file	system_time.hpp
	System timing functions for cooperative scheduling.
file	types.hpp
	Common timing types and enumerations.
file	driver.hpp
	UART driver interface - canonical types for MCU driver implementations.
file	handle.hpp
	UART handle type for hardware abstraction.

Detailed Description

Platform-independent hardware interfaces and convenience layers.

The HAL provides template-based abstractions for common microcontroller peripherals. Each platform implements these interfaces with concrete types that compile to efficient platform-specific code.

Key interfaces:

• GPIO pins and ports
• Timers and delays
• Interrupt control
• Memory barriers

Convenience layers provide ergonomic APIs on top of drivers:

• sbl::adc:: - ADC read, DMA scan start/stop
• sbl::audio:: - Audio output start with SFINAE validation
• sbl::cv:: - CV input read (polling and DMA)
• sbl::button:: - Button read
• sbl::encoder:: - Encoder read
• sbl::led:: - RGB LED write
• sbl::pot:: - Potentiometer read (DMA)
• sbl::voct:: - V/Oct tracking read (DMA)