Procyon AVRlib

C-Language Function Library for Atmel AVR Processors

Written by Pascal Stang | Updated: Tuesday September 20, 2005

--------------------------------------------------------------------------------

AVRlib is a library of easy-to-use C functions for a variety of common and uncommon tasks using AVR processors.

The goal of AVRlib is to allow programmers to work quickly towards their end goal by reducing the time needed to write basic support functions and code.

Most AVRlib header (*.h) files have lengthy descriptions of how to use the supplied library functions. All code (*.c) files are heavily commented with additional information.

Documentation is still being improved and refined on many libraries. When getting familiar with a library, look first at the HTML docs and any example code that is available in the examples directory. Then look inside the *.h and *conf.h files, and then the *.c file for that library for more details and documentation.

Significant example code is included in avrlib.zip. The example code is heavily commented and strives to illustrate how to use various AVRlib function libraries.

Procyon AVRlib Overview

General AVR Built-In Peripheral Drivers
Byte Buffering (circular)
Bit Buffering (linear)
Printf and other formatted print functions
VT100 Terminal Output
Command Line Interface
FAT16/32 File System (support is read-only for now)
STX/ETX Packet Protocol
Fixed-Point Math Library (basic operations only)
Timers (with PWM, interrupt management)
UART (interrupt driven)
A/D Converter
I2C Master/Slave (interrupt and non-intr)
SPI Interface
External Interrupts

External Hardware Device Drivers AVR Software-Emulated Devices
Character LCD Modules (HD44780-based)
I2C EEPROM Memories
SPI EEPROM Memories
MMC/SD Card Interface (SPI mode)
LIS3L02 ST Accelerometer
IDE/ATA Interface (for hard disks and CF cards)
Quadrature Encoders
RC-Servos (up to 8 channels)
STA013 MP3 Decoder Chip
GPS Receivers (via serial port)
NMEA-0813 Protocol
Trimble TSIP Protocol
Graphic LCD Modules
KS0108/HD61202 Controller
T6963 Controller
LCD Fonts and Symbols
I2c Master (Bit-Bang)
UART (software-based, timer interrupt driven)
Pulse Output (timer-based, variable frequency)
Intel-type Memory Bus (Address & Data Buses + nRD,nWR)

Network Support
Device Drivers
RTL8019 Ethernet
AX88796 Ethernet
CS8900 Ethernet
Prism2 Wireless LAN
Network Protocols
ARP
ICMP
IP
UDP
DHCP
Network Stack infrastructure