Hardware Drivers

Hardware drivers are simple abstractions to talk to Hardware inside the Microcontroller itself.

libyggdrasil gives access to all standard interfaces as long as the YGGDRASIL_PERIPHERAL_DEFS define flag is set. This should only be used with the unmodified template as things may stop working correctly when changes were made to the .ioc file.

Note

The C++ interface heavily depends on constexpr execution and template meta programming to optain ideal code generation. This might be confusing for C++ beginners so here’s a breakdown of the structure:

All interfaces consist of a “frontend” and a “implementation”. The frontend takes a context (e.g the interface base address, a HAL handle or a interface number) and the implementation class of the current board as template parameters. The frontend is the common interface that gets accessed by the user. It then calls into the implementation to interact with the hardware.

Interfaces

See also

GPIO

General Purpose Input/Output

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ADC

Analog-Digital Converter

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DAC

Digital-Analog Converter

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UART

Universal Asynchronous Receiver/Transmitter

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SPI

Serial Peripheral Interface

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I2C

Inter-Integrated Circuits

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Display

Drawing to the screen

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Timer

Counters, PWM and performance counters

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CAN

Controller Area Network

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RNG

Random Number Generator

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Hash

Hardware accelerated checksum and hashing algorithms

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