 Standard I/O (stdio) | Common standard I/O driver that implements the stdio read and write functions on AVR and SAM devices |
  Standard serial I/O (stdio) | Common standard serial I/O management driver that implements a stdio serial interface on AVR and SAM devices |
| Compiler abstraction layer and code utilities | Compiler abstraction layer and code utilities for Cortex-M0+ based Atmel SAM devices |
 Status Codes | |
| Preprocessor - Macro Recursion | |
| Preprocessor - Macro Repeat | |
| Preprocessor - Stringize | |
| Preprocessor - Token Paste | |
| Global interrupt management | This is a driver for global enabling and disabling of interrupts |
| Deprecated interrupt definitions | |
| Atmel part identification macros | This collection of macros identify which series and families that the various Atmel parts belong to |
| AVR UC3 parts | |
| AVR XMEGA parts | |
| megaAVR parts | |
| SAM parts | |
| Generic board support | The generic board support module includes board-specific definitions and function prototypes, such as the board initialization function |
 SAM L21 Xplained Pro board | |
 Features | Symbols that describe features and capabilities of the board |
| SAM Port (PORT) Driver | This driver for Atmel® | SMART ARM®-based microcontrollers provides an interface for the configuration and management of the device's General Purpose Input/Output (GPIO) pin functionality, for manual pin state reading and writing |
| SAM System Pin Multiplexer (SYSTEM PINMUX) Driver | This driver for Atmel® | SMART ARM®-based microcontrollers provides an interface for the configuration and management of the device's physical I/O Pins, to alter the direction and input/drive characteristics as well as to configure the pin peripheral multiplexer selection |
| SIO2HOST - UART | This module performs serial input/output functionalities via UART |
| Serial Interface (Serial) | See Quick start guide for Serial Interface service |
| SAM Serial USART (SERCOM USART) Driver | This driver for Atmel® | SMART ARM®-based microcontrollers provides an interface for the configuration and management of the SERCOM module in its USART mode to transfer or receive USART data frames |
| SAM System (SYSTEM) Driver | This driver for Atmel® | SMART ARM®-based microcontrollers provides an interface for the configuration and management of the device's system relation functionality, necessary for the basic device operation |
| SAM System Clock Management (SYSTEM CLOCK) Driver | This driver for Atmel® | SMART ARM®-based microcontrollers provides an interface for the configuration and management of the device's clocking related functions |
| SAM System Interrupt (SYSTEM INTERRUPT) Driver | This driver for Atmel® | SMART ARM®-based microcontrollers provides an interface for the configuration and management of internal software and hardware interrupts/exceptions |
| Light Weight Mesh v2.0 | Lightweight Mesh software stack is an easy to use proprietary low power wireless mesh network protocol |
| PHY | Radio physical layer (PHY) provides functions for radio transceiver access |
| AT86RF212B PHY Layer | The AT86RF212 is a low-power ,low voltage 700/800/900 MHz radio transceiver designed for industrial and consumer ZigBee/IEEE 802.15.4, 6LoWPAN, RF4CE and high data rate sub 1GHz ISM band applications |
| Network layer(NWK) | Network layer (NWK) provides core stack functionality and provides two routing algorithms,1.Native routing and 2.AODV routing |
| LWMesh System Services | System services provide common functions for all layers, which are necessary for normal stack operation |
| LWMesh System Services - Security | |
| Group_trx_access | This module includes api's and defenitions required for Devices with externally plugged transceivers(Non Soc's) |
| Busy-Wait Delay Routines | This module provides simple loop-based delay routines for those applications requiring a brief wait during execution |
| SAM Serial Peripheral Interface (SERCOM SPI) Driver | This driver for Atmel® | SMART ARM®-based microcontrollers provides an interface for the configuration and management of the SERCOM module in its SPI mode to transfer SPI data frames |
| SAM External Interrupt (EXTINT) Driver | This driver for Atmel® | SMART ARM®-based microcontrollers provides an interface for the configuration and management of external interrupts generated by the physical device pins, including edge detection |
| SAM Timer/Counter (TC) Driver | This driver for Atmel® | SMART ARM®-based microcontrollers provides an interface for the configuration and management of the timer modules within the device, for waveform generation and timing operations |
| Group_pal_common_hw_timer | Implements a common api interface for accessing timer drivers of all architectures |
1.8.5