API Overview

The table lists Zephyr’s APIs and information about them, including their current stability level. More details about API changes between major releases are available in the Releases.

API	Status	Version Introduced
Analog-to-Digital Converter (ADC)	Stable	1.0
Audio Codec	Experimental	1.13
Digital Microphone (DMIC)	Experimental	1.13
Auxiliary Display (auxdisplay)	Experimental	3.4
Barriers API	Experimental	3.4
Bootloader Information	Experimental	3.5
Bluetooth APIs	Stable	1.0
Clock Control	Stable	1.0
CoAP	Unstable	1.10
Connection Manager	Experimental	3.4.0
CAN Controller	Stable	1.14
CAN Transceiver	Experimental	3.1
Chargers	Experimental	3.5
Counter	Unstable	1.14
Crypto APIs	Stable	1.7
Digital-to-Analog Converter (DAC)	Unstable	2.3
Digital Audio Interface (DAI)	Experimental	3.1
Direct Memory Access (DMA)	Stable	1.5
Device Driver Model	Stable	1.0
Devicetree API	Stable	2.2
Disk Access	Stable	1.6
Display Interface	Unstable	1.14
EC Host Command	Experimental	2.4
Error Detection And Correction (EDAC)	Unstable	2.5
Electrically Erasable Programmable Read-Only Memory (EEPROM)	Stable	2.1
Entropy	Stable	1.10
File Systems	Stable	1.5
Flash	Stable	1.2
Flash Circular Buffer (FCB)	Stable	1.11
Fuel Gauge	Experimental	3.3
Flash map	Stable	1.11
GNSS (Global Navigation Satellite System)	Experimental	3.6
General-Purpose Input/Output (GPIO)	Stable	1.0
Hardware Information	Stable	1.14
I2C EEPROM Target	Stable	1.13
Inter-Integrated Circuit (I2C) Bus	Stable	1.0
I2C Target API	Experimental	1.12
Inter-IC Sound (I2S) Bus	Stable	1.9
Improved Inter-Integrated Circuit (I3C) Bus	Experimental	3.2
IEEE 802.15.4 Driver API	Unstable	1.0
IEEE 802.15.4 L2 / Native Stack API	Unstable	1.0
IEEE 802.15.4 Management API	Unstable	1.0
Input	Experimental	3.4
Inter-Processor Mailbox (IPM)	Stable	1.0
Keyboard Scan	Stable	2.1
Kernel Services	Stable	1.0
Light-Emitting Diode (LED)	Stable	1.12
Lightweight M2M (LWM2M)	Unstable	1.9
Linkable Loadable Extensions (LLEXT)	Experimental	3.5
Logging	Stable	1.13
LoRa and LoRaWAN	Experimental	2.2
LoRa and LoRaWAN	Experimental	2.5
Multi-Channel Inter-Processor Mailbox (MBOX)	Experimental	1.0
MCUmgr	Stable	1.11
Modem modules	Experimental	3.5
MQTT	Unstable	1.14
MIPI Display Bus Interface (DBI)	Experimental	3.6
MIPI Display Serial Interface (DSI)	Experimental	3.1
Miscellaneous	Stable	1.0
Networking APIs	Stable	1.0
Non-Volatile Storage (NVS)	Stable	1.12
Platform Environment Control Interface (PECI)	Stable	2.1
PS/2	Stable	2.1
Pulse Width Modulation (PWM)	Stable	1.0
Pin Control API	Experimental	3.0
Power Management	Experimental	1.2
Random Number Generation	Stable	1.0
Regulators	Experimental	2.4
Reset Controller	Experimental	3.1
Retained Memory	Unstable	3.4
Retention System	Experimental	3.4
Real-Time Clock (RTC)	Experimental	3.4
Real Time I/O (RTIO)	Experimental	3.2
System Management Bus (SMBus)	Experimental	3.4
Serial Peripheral Interface (SPI) Bus	Stable	1.0
Sensors	Stable	1.2
Settings	Stable	1.12
Shell	Stable	1.14
Stream Flash	Experimental	2.3
Secure Digital High Capacity (SDHC)	Experimental	3.1
Task Watchdog	Unstable	2.5
USB Type-C Port Controller (TCPC)	Experimental	3.1
Time-aware General-Purpose Input/Output (TGPIO)	Experimental	3.5
Universal Asynchronous Receiver-Transmitter (UART)	Stable	1.0
UART async	Unstable	1.14
USB device support APIs	Stable	1.5
USB-C device stack	Experimental	3.3
User Mode	Stable	1.11
USB-C VBUS	Experimental	3.3
Utilities	Experimental	2.4
Video	Stable	2.1
1-Wire Bus	Experimental	3.2
Watchdog	Stable	1.0
Digital Signal Processing (DSP)	Experimental	3.3