Release notes from WiringPi

Release 3.18

2026-02-08T21:03:39Z

What's Changed ⚡

@Next-Door-Tech contributed...
- Small fixes in #369
- Switch to stdbool.h in #355
- Fix-386 in #387
@naokiiwakami contributed...
- Issue #378 - Have wiringPiISR and wiringPiISR2 return error on failure in initialization in #379
- Add gtest cases for ISR in #398
@mstroh76 contributed...
- Release 2026 in #413
- Unit test: Adjust MaxPWMFreq for Raspberry Pi 1 models in #416
- Unit test: Supporting 5 SPI CS channels in #415
- Unit test: Adjust for Pi1/Zero test hardware in #414

New Contributors 🫶

@naokiiwakami made their first contribution in #379

Full Changelog: 3.16...3.18

Info:

📦 This version has been fully verified on Bookworm and Trixie.
Previous versions should also work on Trixie, as no code changes were required.

Release 3.16

2025-06-06T18:30:49Z

What's Changed ⚡

Upgrade to GPIO_V2 IOCTL with debounce option by @phylax2020
waitForInterrupt and wiringPiISR with status by @phylax2020
Fix memory leak by @phylax2020
Added English Translated Documentation Page by @Mr-Fishy
Update functions.md by @nds2204
Describing pin numbering arguments and wfi modes in gpio help text by @kovianyo
Add function definition for wiringPiSPIxSetup() by @Next-Door-Tech
cleanup, housekeeping by @Next-Door-Tech
improvements, housekeeping & documentation by @mstroh76
....

New Contributors 🥳

@phylax2020 made their first contribution in #318
@Mr-Fishy made their first contribution in #323
@kovianyo made their first contribution in #344
@Next-Door-Tech made their first contribution in #357
@nds2204 made their first contribution in #364

Thank you! 🫶

Full Changelog: 3.14...3.16

Release 3.14

2025-02-22T12:10:17Z

What's Changed

Support for Pi500 and CM5(L)
Full Changelog: 3.12...3.14

wiringpi_3.14_armhf - 32 bit release Bookworm (sha256 7650ed07927cfb552332b86532b130f5affe1645ef571e6498164a809c5080ac)
wiringpi_3.14_arm64 - 64 bit release Bookworm (sha256 70cd908726a3ac82cbd43be9b75fff62dcb9435e76128acf056cd3695dbd2b03)

Oldstable Bullseye:

wiringpi_3.14_bullseye_armhf - 32 bit release Bullseye (sha256 67dfab7b0602dad35125066b3cf1b53eae60ad241645d08fbf0dcc713606715c)

Release 3.12

2025-01-05T20:46:13Z

What's Changed

Pi5 fix RP1 memory not found if SSD is connected by @mstroh76 in #294
Full Changelog: 3.10...3.12

wiringpi_3.12_armhf - 32 bit release Bookworm (sha256 b4ad34b22e32c81729e58a7c67d7dbdccef4fc9cfd5ba500305c383cfa852f10)
wiringpi_3.12_arm64 - 64 bit release Bookworm (sha256 a372d9cb89744ca888d58e3dfcca1f2e60b240d4965e01f749067d41d657ea1b)

Release 3.10

2024-09-09T16:50:31Z

What's Changed

Pi5 fix for gpiochip change with new kernel by @mstroh76 in #280

wiringpi_3.10_armhf - 32 bit release Bookworm (sha256 505d59b609509dac004522ed8891d909197130a89695b01a99bd919e9f5795ea)
wiringpi_3.10_arm64 - 64 bit release Bookworm (sha256 e80047a19622522bf8c26e8718ffecae47843ae378d0ae154c0777f65bb3928e)

Release 3.8

2024-09-04T07:51:37Z

What's Changed

PI5 PWM by @mstroh76 in #270
Pi4 PWM bufix by @mstroh76 in #261
PM_OFF change:
PM_OFF switches PWM signal output off is PWM pin
⚠️ New API:
New pinMode mode PWM_BAL_OUTPUT and PWM_MS_OUTPUT
Add support for Model Compute Module 4S
Internal development: PWM Unit tests

Full Changelog: 3.6...3.8

wiringpi_3.8_armhf - 32 bit release Bookworm (sha256 de606f7a398edfedc50df0cd619212d373a11de27bc35bb3f76f39d2dd01523d)
wiringpi_3.8_arm64 - 64 bit release Bookworm (sha256 ead43ea1b6e2a4f24272ed83611151d90f53877b4c7b58ef51212aa988ecfb3f)

Release 3.6

2024-09-04T07:31:04Z

PM_OFF changes:
PM_OFF (DMA mode) resets the GPIO on Pi 5
PM_OFF (DMA mode) switch GPIO to input on Pi 0-4
Function for return pin mode as enum
⚠️ New API:
getPinModeAlt
Support for multiple SPI number 0-6 and channel 0-2, to support Compute Module 4
⚠️ New API:
wiringPiSPIxGetFd, wiringPiSPIxDataRW, wiringPiSPIxSetupMode, wiringPiSPIxSetup, wiringPiSPIxClose
Internal development: Unit tests (GPIO, SPI, I2C)

wiringpi_3.6_armhf - 32 bit release Bookworm (sha256 b48a2c0f203a94479ddd6e2e48b7dd7d7e712914b69e150720d57c6a0e628b46)
wiringpi_3.6_arm64 - 64 bit release Bookworm (sha256 7f5fc473dddfa2b9ed76e850ad7cafd8593449d9e4395bf6ba8df6163ecbd196)

Release 3.4

2024-05-09T19:06:50Z

What's Changed

fix some typos, improve error message by @mwallner in #213
Fixed warnings and removed unused function by @cl0udf1re in #224
🎈 New Kernel GPIO device Interface (replaces sysfs functions)
wiringPiSetupSys function works again (calls now wiringPiSetupGpioDevice)
by @mstroh76 in
#229
#230
#233
#235
#212

⚠️ NEW API Calls

enum WPIPinType
wiringPiSetupPinType(WPIPinType) - Setup type via parameter
wiringPiSetupGpioDevice(WPIPinType) - New Kernel GPIO device
wiringPiGpioDeviceGetFd - Get file descriptor for Kernel GPIO device
wiringPiGlobalMemoryAccess - Test Global memory access
pinMode(PM_OFF) - Switch off pin mode (input, free fd)
wiringPiI2CReadBlockData and wiringPiI2CWriteBlockData - Read and write I2C sizes other than 8/16 bit
wiringPiI2CRawRead and wiringPiI2CRawWrite - Direct Read and Write to I2C bus

New Contributors

@cl0udf1re made their first contribution in #224

Full Changelog: 3.2...3.4

Version 3.2

2024-03-25T20:06:30Z

This release fixes ISR on debian/ubuntu kernels >= 6.6 🥳
=> everyone using an up-to-date OS should move to this release in order to (re-)enable ISR functionality.

What's Changed

🎈 Implement ISR for all Raspberry Pi Boards - new driver interface by @mstroh76 in #205 🎈
gpio wfi has two new optional parameters (gpio wfi pin mode [interations] [timeout sec.])
⚠️ wiringPiSetupSys function is disabled, the program terminates after execution
linked discussions page in README by @mwallner in #198

Full Changelog: 3.1...3.2

please ensure to use the latest/correct files:

wiringpi_3.2_armhf - 32 bit release Bookworm (sha256 22429dec16ee7f76399cbe73b0a8ab37c06ce4db54f818944c3f2d75c93b04ae)
wiringpi_3.2_arm64 - 64 bit release Bookworm (sha256 8d4b523100505d9f69ce4984322feddb46f4c3bf2a7533dfcaf686fa5a6daa91)
wiringpi_3.2-bullseye_armhf - 32 bit release Bullseye (sha256 842a3d6ef81abb80fbdd30e7ed17a000f1502f30122d9170c402870f009fd8d1)

Version 3.1

2024-03-24T19:54:43Z

What's Changed

Update README, small fixes
Creating correct deb package for arm64
#194 - get board revision from devicetree
#195 - refactor board layout detection

Full Changelog: 3.0...3.1

please ensure to use the latest/correct files:

wiringpi_3.1_armhf - 32 bit release Bookworm (sha256 639094d88a2a93efcd198cf16cc446de0ae94d6440a38e5d6a3d457ad1097707 )
wiringpi_3.1_arm64 - 64 bit release Bookworm (sha256 d85617a6c73182d460cbce2d96350024791e9f7eee3dae724eac05d145b9e175)
wiringpi_3.1-bullseye_armhf - 32 bit release Bullseye (sha256 dbb5b4f1e22463f347cb68db9697dd4483e449e3bfc1c60b5b0b91554be370b5)