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Removed Features and Modules

This document contains a listing of all features and modules that were removed from RIOT at some point in time, mostly due to missing maintenance. The purpose of this list is to have a reference point for reintegrating those features in the future, if new interest arises or a new maintainer is found.

This list is not supposed to contain a change log of all the things that are being removed from RIOT, but should contain only full modules that are removed without any alternative being merged at the same time. For example things like the first netdev should not be put in this list, as a successor (former netdev2) has been merged.

How to read this list

For each high-level feature removed there should be one entry in this list. The entries should comply to the following template:

### path/feature_name [HASH of removal commit]
Author(s):
- author 1 <foo.bar@abc.com>
- author 2 <a.b@c.net>
Reason for removal:
- give a short and comprehensive reasoning why this feature was removed
- typical reasons are:
- feature is not maintained anymore
- lack of hardware so feature can not be tested (anymore)
- feature was never used and there is no reason for keeping it

Additionally, a link reference for the commit on GitHub is added to the bottom of this document.

By putting the name of the removed feature and the commit hash in the same line, one can very quickly find the commit using git grep.

Listing the authors of the removed code is done for appreciation of their work. This way, their names are never removed from the RIOT repository.

Removed Features

cpu/mips* [6cad5d24771ba6199228351a11b5062cd2e9b36d]

Author:

Reasons for removal:

  • Not maintained anymore
  • Current state is not very useful and nobody claimed to use it

pkg/libcoap <a href="https://github.com/RIOT-OS/RIOT/commit/d83d08f0995a88f399e70a7d07b44dd780082436"

>d83d08f0995a88f399e70a7d07b44dd780082436

Author:

Reasons for removal:

  • Not maintained anymore, no updates for 8 years
  • Upstream libcoap allows building with RIOT, so there is a migration path for users

sys/net/gnrc/nettest <a href="https://github.com/RIOT-OS/RIOT/commit/cdc252ab7bd4161cc046bf93a3e55995704b24d4"

>cdc252ab7bd4161cc046bf93a3e55995704b24d4 Author:

Reasons for removal:

  • Not maintained anymore
  • Not used in GNRC

boards/chronos <a href="https://github.com/RIOT-OS/RIOT/commit/ed3887ac5c1e95308c2827bce3cdca8b0f146c22"

>ed3887ac5c1e95308c2827bce3cdca8b0f146c22 Author(s):

Reason for removal:

  • board is quite outdated
  • board cannot be automatically tested for lack of UART
  • board has many special cases, which hurt upgrade to msp430-elf-gcc 9.x
  • the onboard radio has been unsupported for a while
  • no one seems to use the board, no one seems to maintain it

sys/net/gnrc/application_layer/tftp <a href="https://github.com/RIOT-OS/RIOT/commit/0e2a62078850e1ecc74db2db4d639cf2d8fb96d3"

>0e2a62078850e1ecc74db2db4d639cf2d8fb96d3 Author:

Reasons for removal:

  • Not maintained anymore.
  • Existing quality and security defects.

pkg/oonf_api <a href="https://github.com/RIOT-OS/RIOT/commit/c829f820ee870bffc60c7df688d2da8373553212"

>c829f820ee870bffc60c7df688d2da8373553212 Author:

Reasons for removal:

  • Package has not been update since 2013.
  • Tests were never integrated to the CI.
  • NHDP, which was the only upstream user, has been removed.

sys/net/routing/nhdp <a href="https://github.com/RIOT-OS/RIOT/commit/9026823bb906f64168d7d38e52be92f390353dc8"

>9026823bb906f64168d7d38e52be92f390353dc8 Author:

Reasons for removal:

  • Not maintained anymore.
  • Does not comply with the current RIOT programming practices.

sys/ubjson <a href="https://github.com/RIOT-OS/RIOT/commit/bea30c3f8949ebd9fdf4a9bf0a987652889930f5"

>bea30c3f8949ebd9fdf4a9bf0a987652889930f5 Author(s):

Reasons for removal:

  • Unsafe code.
  • Did not comply with RIOT standards.
  • More standard alternatives available (such as CBOR).

boards/jiminy-mega256rfr2 <a href="https://github.com/RIOT-OS/RIOT/commit/232aed3e18118624b862d36bfec7cd1c21ca2d26"

>232aed3e18118624b862d36bfec7cd1c21ca2d26 Author:

Reasons for removal:

  • The board is a custom design at the RWTH Aachen, so only two persons have access to the hardware
  • It was unmaintained for several month now
  • Various refactoring PRs affected the ATmega CPU family have not been tested, it is unclear if the board is actually usable with RIOT

cpu/mips32r2_generic <a href="https://github.com/RIOT-OS/RIOT/commit/a2bcd7539ce1931b7aec0077ea71dadd62c96edd"

>a2bcd7539ce1931b7aec0077ea71dadd62c96edd Author:

boards/mips-malta <a href="https://github.com/RIOT-OS/RIOT/commit/ee6b6b9c388b78fcec7ba6e239a6c76041b9bbb7"

>ee6b6b9c388b78fcec7ba6e239a6c76041b9bbb7 Author:

Reasons for removal:

  • UART input not supported.
  • Hardware not available for testing and not available for purchase either.
  • Not actively maintained / broken for some time.

boards/pca10000 <a href="https://github.com/RIOT-OS/RIOT/commit/9447cb303426d7c6348bb84999f88bf929cd6263"

>9447cb303426d7c6348bb84999f88bf929cd6263 Author(s):

Reason for removal:

  • this was an early development board by Nordic which was discontinued (successor: nrf51dongle)
  • no hardware available anymore for testing

boards/pca10005 <a href="https://github.com/RIOT-OS/RIOT/commit/ea73cc49eacd45640b9660134c4c92b887cb2716"

>ea73cc49eacd45640b9660134c4c92b887cb2716 Author(s):

Reason for removal:

  • this was an early development board by Nordic which was discontinued (successor: nrf51dk)
  • no hardware available anymore for testing

boards/qemu-i386 <a href="https://github.com/RIOT-OS/RIOT/commit/99009af25e201bbc182d376e99df34133417be6c"

>99009af25e201bbc182d376e99df34133417be6c Author(s):

Reason for removal:

  • code broken and excluded from all tests for a long time
  • no maintainer available

boards/weio <a href="https://github.com/RIOT-OS/RIOT/commit/cfa9580f319508f858c8fe30ecce8b2b59b6caa3"

>cfa9580f319508f858c8fe30ecce8b2b59b6caa3 Author(s):

Reason for removal:

  • hardware not available to the community for testing
  • original author and maintainer won't be able to maintain the code

boards/x86-multiboot-common <a href="https://github.com/RIOT-OS/RIOT/commit/b3eb9b8cf23f0702fa725d536df6ad6528f84189"

>b3eb9b8cf23f0702fa725d536df6ad6528f84189 Author(s):

Reason for removal:

  • code broken and excluded from all tests for a long time
  • no maintainer available

cpu/lpc11u34 <a href="https://github.com/RIOT-OS/RIOT/commit/7bc271807cecbffbb01a37c56a367b98fb823573"

>7bc271807cecbffbb01a37c56a367b98fb823573 Author(s):

Reason for removal:

  • hardware not available to the community for testing
  • original author and maintainer won't be able to maintain the code

cpu/x86 <a href="https://github.com/RIOT-OS/RIOT/commit/fc45d7c5ac3d46bfdfb21c243cd3d4881bc5c836"

>fc45d7c5ac3d46bfdfb21c243cd3d4881bc5c836 Author(s):

Reason for removal:

  • code broken and excluded from all tests for a long time
  • no maintainer available

gnrc_pktbuf_duplicate_upto() <a href="https://github.com/RIOT-OS/RIOT/commit/b83430aa625a1d42f11f9badf5e5cfbb8efacd99"

>b83430aa625a1d42f11f9badf5e5cfbb8efacd99 Author(s):

Reason for removal:

boards/wsn430-v1_3b, boards/wsn430-v1_4 <a href="https://github.com/RIOT-OS/RIOT/commit/e63cd54f3b1e002a7895bb7c46af889b341c1a15"

>e63cd54f3b1e002a7895bb7c46af889b341c1a15

Author(s):

Reason for removal:

  • no longer accessible on the IoT-LAB testbed

pkg/emb6 <a href="https://github.com/RIOT-OS/RIOT/commit/4f243c52eabefe709d78560ce7f1d502d737a999"

>4f243c52eabefe709d78560ce7f1d502d737a999 Author(s):

Reason for removal:

  • Stale upstream (last update to date in Mar 2018)
  • Ported version even older (last update Feb 2016)
  • Updating to more recent version would be more effort than its worth

GNRC_NETTYPE_IOVEC <a href="https://github.com/RIOT-OS/RIOT/commit/4f243c52eabefe709d78560ce7f1d502d737a999"

>4f243c52eabefe709d78560ce7f1d502d737a999 Author(s):

Reason for removal:

pkg/nordic_softdevice_ble <a href="https://github.com/RIOT-OS/RIOT/commit/35b6ccedf31f10a5f8e4f97609ad5b10c28bdc34"

>35b6ccedf31f10a5f8e4f97609ad5b10c28bdc34 Author(s):

Reason for removal:

  • Outdated, unmaintained and no longer working

gnrc_pktbuf_replace_snip() <a href="https://github.com/RIOT-OS/RIOT/commit/72821a502f073006643cb4ef7815fc8c42563ce6"

>72821a502f073006643cb4ef7815fc8c42563ce6 Author(s):

Reason for removal:

  • Unused, untested and no longer needed

sys/irq_handler <a href="https://github.com/RIOT-OS/RIOT/commit/a2dd6f90e51ca9edef643ba72bd1fd18113cf0d2"

>a2dd6f90e51ca9edef643ba72bd1fd18113cf0d2 Author(s):

Reason for removal:

  • Provides some feature as sys/event_thread
  • Has been deprecated directly in the first release it was provided

boards/slwstk6220a <a href="https://github.com/RIOT-OS/RIOT/commit/cab1ea66b49e3c72e2827c8686c09d84ae3ef9a9"

>cab1ea66b49e3c72e2827c8686c09d84ae3ef9a9 Author(s):

Reason for removal:

  • The old implementation of the SLWSTK6220A based on cpu/ezr32wg did not use the Gecko SDK, that other EFM32-based boards do use
  • The old implementation had limited peripherals supported
  • New implementation (with the same name) that is based on cpu/efm32 was added in commit fe941ac9fe3f81c0f08ff3b8564cf439639abcda

boards/fox <a href="https://github.com/RIOT-OS/RIOT/commit/81458c8eed8949c686d5ded652dbee10748e860b"

>81458c8eed8949c686d5ded652dbee10748e860b Author(s):

Reason for removal:

  • Hardware not available so can't be tested