v1.0.1

• Bug fixes
  • On at least one device, the pin direction reported by Linux does not match
    the actual pin direction. This release forces the pin direction for inputs.
    It cannot do this for outputs, since setting a pin to output has a side
    effect on the pin state. This technically is a bug in a Linux driver port,
    but it was harmless to workaround for inputs so that's what's done. Thanks
    to @pojiro for investigating and fixing this issue.

v1.0.0

This release only changes the version number. No code has changed.

v0.4.8

This release only has doc and build output cleanup. No code has changed.

v0.4.7

• Bug fixes
  • Fix hang when unloading the NIF. This bug caused :init.stop to never
    return and anything else that would try to unload this module.
  • Fix C compiler warnings with OTP 24

The minimum Elixir version has been changed from 1.4 to 1.6. Elixir 1.4 might
still work, but it's no longer being verified on CI.

v0.4.6

• Bug fixes
  • Fix quoting issue that was causing failures on Yocto. Thanks to Zander
    Erasmus for this.

v0.4.5

• Bug fixes
  • Opening a GPIO to read its state won't clear the interrupt status of another
    listener. Registering for interrupts a second time will still clear out the
    first registree, though. That's a limitation of the interface. However, for
    debugging, it can be nice to look at a GPIO without affecting the program
    and this change allows for that.

v0.4.4

• Bug fixes
  • Add -fPIC to compilation flags to fix build with nerves_system_x86_64 and
    other environments using the Musl C toolchains

v0.4.3

• Bug fixes

  • Fix GPIO glitch suppression when interrupts were enabled. Glitch suppression
    filters out transitions on a GPIO line that are too fast for Linux and the
    NIF to see both the rising and falling edges. Turning it off synthesizes
    events. You can identify synthesized events since they have the same
    timestamp to the nanosecond. See Circuits.GPIO.set_interrupts/3.

• Improvement

  • It's possible to enable the "stub" on Linux by setting
    CIRCUITS_MIX_ENV=test. This can be useful for unit testing code that uses
    Circuits.GPIO. Thanks to Enrico Rivarola for adding this!

v0.4.2

• Bug fixes
  • Fix pullup/pulldown support for the Raspberry Pi 4

v0.4.1

• Bug fixes
  • Fix a race condition on Raspbian where Circuits.GPIO would try to open the
    GPIO sysfs file before udev had a chance to fix its permissions.
  • Fix RPi platform detection on Raspbian so that pull-ups/pull-downs work
    without passing any flags.