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 Release Notes.

API	Status	Version Introduced
Analog-to-Digital Converter (ADC)	Stable	1.0
Audio Codec	Experimental	1.13
Digital Microphone (DMIC)	Experimental	1.13
Bluetooth APIs	Stable	1.0
Clock Control	Stable	1.0
CoAP	Unstable	1.10
CAN Controller	Stable	1.14
Counter	Unstable	1.14
Crypto APIs	Stable	1.7
Digital-to-Analog Converter (DAC)	Experimental	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)	Experimental	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
Gaussian & Neural Accelerator (GNA)	Experimental	1.14
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
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
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
MQTT	Unstable	1.14
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
Retained Memory	Experimental	3.4
Reset Controller	Experimental	3.1
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	Experimental	2.5
USB Type-C Port Controller (TCPC)	Experimental	3.1
Universal Asynchronous Receiver-Transmitter (UART)	Stable	1.0
UART async	Unstable	1.14
USB device support	Stable	1.5
USB-C device support	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