Crate avr_config

Foundational crate for retrieving details about the target AVR being compiled for.

This crate currently exposes the CPU frequency that is being configured for.

The AVR_CPU_FREQUENCY_HZ environment variable

All crates that depend on this crate (with the cpu-frequency feature enabled) require $AVR_CPU_FREQUENCY_HZ when targeting AVR. The frequency will then be available in the CPU_FREQUENCY_HZ constant.

It is not necessary to set this variable when AVR is not being targeted, for example, when running integration tests on the host machine.

Constants

CPU_FREQUENCY_HZ

The clock frequency of the current AVR microcontroller (if the cpu-frequency crate feature is enabled).