# Changelog

## v2.0.0

This is a major release that removes GPIO from sysfs since it is deprecated by the
Linux kernel. The GPIO remapping from names to sequential numbers has also been
removed. [Circuits GPIO](https://github.com/elixir-circuits/circuits_gpio) v2
is now the recommended way to use the GPIO pins, which can be accessed by name
(i.e. `PA6`). The GPIOs for the development kit can be found in the
[ATSAMA5D27-WLSOM1-EK1 user's guide](https://ww1.microchip.com/downloads/aemDocuments/documents/MPU32/ProductDocuments/UserGuides/SAMA5D2-Wireless-SOM1-Kit-User%27s-Guide-50002931d.pdf).

This release also updates Erlang to OTP 27.

* Changes
  * Remove GPIO from sysfs.
  * Remove pinctrl-at91-pio4 sequential GPIO numeric mappings.
  * Disabled the RGB LED heartbeat to free the GPIO for use in user space.

* Updated dependencies
  * [nerves_system_br: v1.28.2](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.28.2)
  * [Erlang/OTP 27.0.1](https://erlang.org/download/OTP-27.0.1.README)
  * [linux-at91: 2024.04](https://github.com/linux4microchip/linux/releases/tag/linux4microchip-2024.04) - Linux kernel 6.6.23
  * [u-boot-mchp: 2024.04](https://github.com/linux4microchip/u-boot-mchp/releases/tag/linux4microchip-2024.04)
  * [at91bootstrap: v4.0.9](https://github.com/linux4sam/at91bootstrap/releases/tag/v4.0.9)

## v1.1.0

This release brings in `iptables` and the 2023.10 release of Microchip's tooling.

* Changes
  * Add [iptables](https://www.netfilter.org/projects/iptables/index.html) so that a firewall is included by default.

* Updated dependencies
  * [nerves_system_br: v1.27.2](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.27.2)
  * [Erlang/OTP 26.2.5](https://erlang.org/download/OTP-26.2.5.README)
  * [linux-at91: 2023.10](https://github.com/linux4microchip/linux/releases/tag/linux4microchip-2023.10) - Linux kernel 6.1.55
  * [u-boot-mchp: 2023.10](https://github.com/linux4microchip/u-boot-mchp/releases/tag/linux4microchip-2023.10)
  * [at91bootstrap: v4.0.8](https://github.com/linux4sam/at91bootstrap/releases/tag/v4.0.8)

## v1.0.1

Ownership transfer.

The GitHub URL has changed in this version. There are no functionality changes.

## v1.0.0

Production release.

This version is identical to v0.4.8, but the number is being incremented to
convey that it is suitable for production systems.

## v0.4.8

This is a maintenance release that brings in OTP 26 and the 2023.04 release of
Microchip's tooling.

* Updated dependencies
  * [nerves_system_br: v1.23.0](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.23.0)
  * [Erlang/OTP 26.0](https://erlang.org/download/OTP-26.0.README)
  * [linux-at91: 2023.04](https://github.com/linux4sam/linux-at91/releases/tag/linux4microchip-2023.04) - Linux kernel 6.1.22
  * [u-boot-at91: 2023.04](https://github.com/linux4sam/u-boot-at91/releases/tag/linux4sam-2023.04)
  * [at91bootstrap: v4.0.6](https://github.com/linux4sam/at91bootstrap/releases/tag/v4.0.6)

## v0.4.7

This is a maintenance release.

* Updated dependencies
  * [nerves_system_br: v1.22.5](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.22.5)
  * [Erlang/OTP 25.3](https://erlang.org/download/OTP-25.3.README)

## v0.4.6

* Updated dependencies
  * [nerves_system_br: v1.22.3](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.22.3)
  * [toolchain: v1.8.0](https://github.com/nerves-project/toolchains/releases/tag/v1.8.0)
  * [GCC 12.2](https://gcc.gnu.org/gcc-12/changes.html)

## v0.4.5

* Updated dependencies
  * [nerves_system_br: v1.22.2](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.22.2)
  * [Erlang/OTP 25.2.2](https://erlang.org/download/OTP-25.2.2.README)

## v0.4.4

This release updates the board identifier to look for the ATECC crypto chip on
the SOM and use it if it is available. The MAC address is used as a fallback
if the SOM variant of the processor is not being used, and the identifier can
be set manually with the U-Boot environment variable `nerves_serial_number`.

* Changes
  * Check ATECC crypto chip for board ID

* Updated dependencies
  * [nerves_system_br: v1.21.6](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.21.6)
  * [Erlang/OTP 25.2](https://erlang.org/download/OTP-25.2.README)

## v0.4.3

This release fixes issues with the WILC3000 Wi-Fi module becoming unresponsive
and potentially triggering the watchdog in access point (AP) mode. After
reconfiguring the interface at runtime when it's in AP mode, reset the
module with:

```elixir
cmd "rmmod wilc-sdio"
cmd "modprobe wilc-sdio"
```

* Changes
  * Switch to the mainline Linux WILC driver

## v0.4.2

* Changes
  * Add support for WILC3000 Wi-Fi + Bluetooth module
  * Update U-Boot to [linux4sam-2022.10](https://github.com/linux4sam/u-boot-at91/releases/tag/linux4sam-2022.10)

## v0.4.1

Update your application's [nerves_runtime](https://hex.pm/packages/nerves_runtime) to `0.13.3` or greater if you
need the fix for `Nerves.Runtime.poweroff`.

* Changes
  * Enable the U-Boot console
  * Update `nerves_system_br` for:
    * `nerves_heart` changes to the watchdog for reboots and poweroff
    * Buildroot bug/security fixes

* Updated dependencies
  * [nerves_system_br: v1.21.4](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.21.4)

**Known Issues**

The WILC3000 Wi-Fi / BLE module does not appear to be working in this version.
The `wilc-sdio` driver loads, but the module doesn't show up as `wlan0`.

## v0.4.0

This version brings several dependencies up to date:
- Erlang `OTP 25`
- Linux kernel `linux4microchip-2022.10`
- AT bootloader `v4.0.5`
- Toolchain `1.6.1`
- GCC 11

The logical GPIO numbers have been updated to be compatible with [Circuits.GPIO](https://github.com/elixir-circuits/circuits_gpio).
For example, pin `PA1` is logically `gpio1`. See the [GPIO section](https://github.com/amclain/nerves_system_sama5d27_wlsom1_ek#gpio)
in the readme for a full chart of the mappings.

* Dependencies
  * [nerves_system_br: v1.21.2](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.21.2)
  * [Erlang/OTP 25.1.2](https://erlang.org/download/OTP-25.1.2.README)

**Known Issues**

The WILC3000 Wi-Fi / BLE module does not appear to be working in this version.
The `wilc-sdio` driver loads, but the module doesn't show up as `wlan0`.

## v0.3.0

This version bumps the toolchain to v1.4.3 which includes updates to GCC 10.

* Dependencies
  * [linux](https://github.com/linux4sam/linux-at91/releases/tag/linux4sam-2021.04)
  * [nerves_system_br: v1.16.3](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.16.3)
  * [Erlang/OTP 24.0.4](https://erlang.org/download/OTP-24.0.4.README)

## v0.2.0

The device tree and linux kernel are now loaded from the squashfs root file
system. 

* Bug fixes
  * `wlan0` could encouter an error indicated by the error `cfg_indicate_rx: Receive unknown message`
    when transferring firmware or large file streams. The SDIO interface speed was reduced from 
    50Mhz to 48Mhz. 

* Dependencies
  * [nerves_system_br: v1.14.0](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.14.4)
  * [Erlang/OTP 23.2.4](https://erlang.org/download/OTP-23.2.4.README)


## v0.1.0

Initial release

* Dependencies
  * [nerves_system_br: v1.14.0](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.14.0)
  * [Erlang/OTP 23.2.1](https://erlang.org/download/OTP-23.2.1.README)