v0.18.0

• Gpio: (Breaking change) Add support for mode Null for uninitialized (FUNCSEL 31 (NULL)) pins on Raspberry Pi 5 (contributed by @lukeburong).
• Gpio: Fix InputPin mode not getting set correctly for uninitialized pins on Raspberry Pi 5 (contributed by @lukeburong).
• Pwm: (Breaking change) Add Error::UnknownModel.
• Pwm: Fix support for hardware PWM on Raspberry Pi 5, caused by incorrect PWM chip/channel.

v0.17.1

• Fix is_low implementation for embedded_hal::digital::InputPin (contributed by @TeyKey1).

v0.17.0

• (Breaking change) Update embedded-hal to v1.0.0 (contributed by @reitermarkus).

v0.16.1

• Minor documentation changes.

v0.16.0

• (Breaking change) Update embedded-hal to v1.0.0-rc.2 (contributed by @reitermarkus).
• (Breaking change) Update embedded-hal to v1.0.0-rc.1 (contributed by @mbuesch).
• (Breaking change) Change Minimum Supported Rust Version (MSRV) to v1.60.0.
• Remove Hardware field check in /proc/cpuinfo.
• Fix device recognition for Raspberry PI Zero 2 W (2021) on Arch Linux (contributed by @denisandroid).

v0.15.0

• Add support for Raspberry Pi 5 (thanks @ukscone for all the testing!).
• Gpio: (Breaking change) Rename PullUpDown enum to Bias, and set_pullupdown to set_bias.
• Gpio: Add support for new modes Alt6, Alt7 and Alt8.
• I2c: Implement I2C transactions for embedded-hal (contributed by @CBJamo).

v0.14.1

• Gpio: Fix subtract underflow panic in software-based PWM.

v0.14.0

• (Breaking change) Transition to Rust 2021, requiring rustc v1.56.0 or newer to compile the library.
• Gpio: Implement unproven embedded-hal trait digital::v2::IoPin<IoPin, IoPin> for IoPin (contributed by @rumatoest).
• Gpio: Implement From<bool> trait for Level (contributed by @makerio90).
• Gpio: Fix error when configuring an InputPin for GPIOs > 31 on BCM2711 (contributed by @benkard).
• Gpio: Fix access to GPIO54 - GPIO57 on BCM2711.
• Gpio: (Breaking change) Add Error::PinUsed, returned by Gpio::get() to indicate a pin is already in use.
• Gpio: (Breaking change) Change Error::PinNotAvailable, returned by Gpio::get() to indicate a pin isn't available on the current Raspberry Pi model.
• Update embedded-hal to v1.0.0-alpha.9 (contributed by @mbuesch).

v0.13.1

• DeviceInfo: Add device identification support for Raspberry Pi Compute Module 4 models with 4GB and 8GB RAM.
• DeviceInfo: Add device identification support for Raspberry Pi Zero 2 W.

v0.13.0

• Add support for embedded-hal v1.0.0-alpha.5 (contributed by @reitermarkus).
• Gpio: Add into_output_low() and into_output_high() to Pin to set the logic level before changing the pin mode.
• Gpio: Implement From<u8> trait for Level, where 0 is converted into Level::Low, and any other value into Level::High.