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Hi.You can look in https://www.avrfreaks.net/ in academy secction. In this secction have a lot of code source (C and ASM). It is very interesant.
Best Regards cb30
Now, the link works again.
Below the exact link. **broken link removed**
You can find a lot of software, hardware, AVR-GCC with Visual Stuio, and etc.
The below is the code list from the link
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Project Files
Code Files Code Description
avrlib.zip Complete Library (all files in the library from each section listed below plus example code and html docs)
updated: Tuesday February 04, 2003
AVRProject.dsp
AVRProject.dsw Example project files for using AVR-GCC with Microsoft Visual C++ 6.0
This Visual Studio project is an example project which contains all the code files listed below (the actual *.h and *.c files must also reside in the same directory). The project allows you to easily use MS VC++ to edit code for the AVR and has been configured so that clicking the "build" button in Visual Studio will run the AVR-GCC make causing your code to be compiled and errors reported into the build window. Additional information about how to use Visual Studio with AVR-GCC can be found here.
makefile Example makefile for compiling with AVR-GCC
This heavily-commented makefile should make using the make process easier to understand.
updated: Tuesday February 04, 2003
avr_make Makefile script file for compiling with AVR-GCC
This file is required in order to use the above makefile or compile any of the examples
updated: [an error occurred while processing this directive]
Basic Functionality/Processor Support
Code Files Code Description
a2d.h
a2d.c Analog-to-Digital Converter Function Library
This library provides an easy interface to the analog-to-digital converter available on many AVR processors. Updated to support the ATmega128.
updated: Tuesday January 21, 2003
bitbuf.h
bitbuf.c Generic Bit-Buffer Structure and Function Library
This bit-buffer structure provides an easy and efficient way to store and process bits. You can create as many bit buffers as you like (within memory limits), and then use this common set of functions to access each buffer. Supported functions include sequential getting and storing of bits, array-like get, buffer flush (dump data), and reset-to-beginning. This buffer is not dynamically allocated, it has a user-defined fixed maximum size.
updated: Saturday October 05, 2002
buffer.h
buffer.c Generic Byte-Buffer Structure and Function Library
This byte-buffer structure provides an easy and efficient way to store and process a stream of bytes. You can create as many buffers as you like (within memory limits), and then use this common set of functions to access each buffer. The buffers are designed for FIFO operation (first in, first out). This means that the first byte you put in the buffer will be the first one you get when you read out the buffer. Supported functions include buffer initialize, get byte from front of buffer, add byte to end of buffer, check if buffer is full, and flush buffer. The buffer uses a circular design so no copying of data is ever necessary. This buffer is not dynamically allocated, it has a user-defined fixed maximum size. This buffer is used in many places in the avrlib code.
updated: Sunday November 17, 2002
i2c.h
i2c.c I2C Serial Interface Function Library
This library provides the high-level functions needed to use the I2C serial interface supported by the hardware of several AVR processors. The library is functional but has not been fully tested yet and is still expanding. Thanks to the standardization of the I2C protocol and register access, the send and receive commands are everything you need to talk to thousands of different I2C devices including: EEPROMS, Flash memory, MP3 players, A/D and D/A converters, electronic potentiometers, etc.
updated: Monday February 03, 2003
fixedpt.h
fixedpt.c Fixed-Point Math Function Library
This library provides basic fixed-point math operations implemented in C. Fixed-point math is a system by which integer variables can represent fractional values with a fixed precision "behind" the decimal point. Fixed-point math is much faster to execute than floating-point math, and should be used when a limited amount of fractional precision is sufficient (such as 4ths, or 10ths, or 128ths).
Note: Library not currently complete
updated: Tuesday February 04, 2003
lcd.h
lcd.c Character LCD Driver for HD44780/SED1278-based displays
This display driver provides an interface to the most common type of character LCD, those based on the HD44780 or SED1278 controller chip (about 90% use one of these chips). The display driver can interface to the display through the CPU memory bus, or directly via I/O port pins. When using the direct I/O port mode, no additional interface hardware is needed except for a contrast potentiometer. Supported functions include initialization, clearing, scrolling, cursor positioning, text writing, and loading of custom characters or icons (up to 8). Although these displays are simple, clever use of the custom characters can allow you to create animations or simple graphics. A "progress bar" function is included in the driver.
The driver now supports both 8-bit and 4-bit interface modes.
(for full text output functionality, you may wish to use the rprintf functions along with this driver)
updated: Tuesday January 21, 2003
pulse.h
pulse.c Pulse Function Library
This library provides functions for generating pulses of arbitrary frequency and number. Common uses include stepper motor speed control, tone generation, communications, etc. This library requires the timer function library.
updated: Tuesday January 21, 2003
rprintf.h
rprintf.c A printf() Function Library (for general and specific data types)
The rprintf function library provides a simplified (reduced) version of the common C printf() function. See the code files for details about which printf features are supported. Also in this library are a variety of functions for fast printing of certain common data types (variable types). Functions include print string from RAM, print string from ROM, print string snippet, print hex byte/short/long, and a custom-formatted number print.
NOTE: All output from the rprintf library can be directed to any device or software which accepts characters. This means that rprintf output can be sent to the UART (serial port) or can be used with the LCD display libraries to print formatted text on the screen.
updated: Tuesday January 21, 2003
rtc.h
rtc.c Real-Time Clock Function Library
The RTC library provides everything you need to use the real-time clock resources present in many of the AVR processors. Once initialized, the RTC library keeps track of "human-format" time (HH:MM:SS and day/month/year) and that time can be used by other code. The time-keeping code is interrupt-driven and can be set or read at any time. This library requires real-time clock processor support and an external 32.768KHz crystal. Check your processor's datasheet to see if it supports RTC (in the timers section/chapter)
updated: Tuesday January 21, 2003
spi.h
spi.c SPI (Serial Peripheral Interface) Function Library
Provides basic byte and word transmitting and receiving via the AVR SPI interface. Due to the nature of SPI, every SPI communication operation is both a transmit and simultaneous receive. Currently, only MASTER mode is supported.
updated: Tuesday January 21, 2003
stxetx.h
stxetx.c STX/ETX Packet Protocol Function Library
This library provides functions needed to transmit and receive STX/ETX packets over any interface which can send and receive bytes. STX/ETX is a simple packet protocol for serial data streams and offers packetization, type tagging, and checksum protection for user data. Common uses of STX/ETX might include radio communications were it can improve data reliability over lossy channels. STX/ETX may also be used effectively anywhere multiple access to the communication medium is required. The packets can be made to contain destination addresses or routing information as well as data.
updated: Sunday December 01, 2002
timer.h
timer.c Timer Function Library
This library provides functions for use with the timers internal to the AVR processors. Functions include initialization, set prescaler, calibrated pause function (in milliseconds), attaching and detaching of user functions to interrupts, overflow counters, PWM. Arbitrary frequency generation has been moved to the Pulse Library.
updated: Tuesday January 21, 2003
timer128.h
timer128.c Timer Function Library for the ATmega128
This library provides functions for use with the timers internal to the AVR ATmega128. Functions include initialization, set prescaler, calibrated pause function (in milliseconds), attaching and detaching of user functions to interrupts, overflow counters, and PWM (PWM is coming).
updated: Tuesday January 21, 2003
uart.h
uart.c UART (serial port) Driver/Function Library
This library provides both buffered and unbuffered transmit and receive functions for the AVR processor UART. Buffered access means that the UART can transmit and receive data in the "background", while your code continues executing. Also included are functions to initialize the UART, set the baud rate, flush the buffers, and check buffer status.
(for full text output functionality, you may wish to use the rprintf functions along with this driver)
updated: Tuesday January 21, 2003
uart2.h
uart2.c Dual UART (serial port) Driver/Function Library for the Mega161 and Mega128
This library provides both buffered and unbuffered transmit and receive functions for AVR processors with two UARTs. Buffered access means that the UART can transmit and receive data in the "background", while your code continues executing. Also included are functions to initialize the UART, set the baud rate, flush the buffers, and check buffer status.
(for full text output functionality, you may wish to use the rprintf functions along with this driver)
updated: Tuesday January 21, 2003
vt100.h
vt100.c VT100 Terminal Function Library
This library provides functions for sending VT100 escape codes to control a connected VT100 or ANSI terminal. Commonly useful functions include setting the cursor position, clearing the screen, setting the text attributes (bold, inverse, blink, etc), and setting the text color. This library will slowly be expanded to include support for codes as needed and may eventually receive VT100 escape codes too.
updated: Tuesday January 21, 2003
Software-Driven Interfaces
Code Files Code Description
i2csw.h
i2csw.c Software-driven I2C Serial Interface Function Library
This library provides a very simple bit-banged I2C serial interface. The library supports MASTER mode send and receive of single or multiple bytes. Thanks to the standardization of the I2C protocol and register access, the send and receive commands are everything you need to talk to thousands of different I2C devices including: EEPROMS, Flash memory, MP3 players, A/D and D/A converters, electronic potentiometers, etc.
Although some AVR processors have built-in hardware to help create an I2C interface, this library does not use or require that hardware.
updated: Tuesday January 21, 2003
pwmsw.h
pwmsw.c Software Interrupt-driven Multi-output PWM Function Library
Provides up to 8 channels of PWM output at frequencies up to several hundred hertz.
NOTE: works but not fully completed
updated: Tuesday January 21, 2003
uartsw.h
uartsw.c Software Interrupt-driven UART Function Library
This library provides one or two additional half-duplex serial ports to most AVR processors. The serial ports are half-duplex meaning
NOTE: library not currently complete
updated: Tuesday January 21, 2003
Hardware Drivers
Code Files Code Description
ata_if.h
ata_if.c IDE/ATA Interface Driver (for IDE/ATA hard disks)
This library provides an interface from AVR processors to IDE/ATA hard disks. The library supports automatic drive identification and sector-level reading and writing. Some minimal address decoding hardware is required to use this interface. A schematic of the interface is coming. Future revisions may include a direct hardware-less option.
updated: Tuesday January 21, 2003
encoder.h
encoder.c Quadrature Encoder Driver
This library provides an interface to standard quadrature encoders (used for sensing shaft rotational position and speed). The library uses external interrupts to sense and keep track of the encoder's movements. The library is extendable with the maximum number of encoders equal to the total number of external interrupts available on the target AVR processor.
NOTE: Library not tested
updated: Saturday February 01, 2003
fat.h
fat.c FAT16/32 File System Interface
This FAT16/32 interface allows you to detect and mount FAT16/32 partitions, browse directories and files, and read file data. The interface is design to operate with the avrlib IDE/ATA driver. Reading FAT efficiently requires at least 512+ bytes of RAM so this interface may not be suitable for processors with less than 1K of RAM. This interface will properly follow a file's cluster chain so files need not be defragmented.
updated: Tuesday January 21, 2003
glcd.h
glcd.c
font5x7.h
fontgr.h Graphic LCD API (application programmer's interface)
This library (or API) allows you to draw dots, lines, boxes, circles, and text on most monochrome graphic LCDs. An easily expandable font file (5x7-pixel characters) is provided for all basic ASCII characters (0x20-0x7F hex, 32-127 decimal). An expandable graphic font file is provided for defining specialty characters or custom icons. Because this library is designed to work with many different kinds of LCDs, it needs a graphic LCD driver such as ks0108.c to enable it to talk to the LCD.
(for full text output functionality, you may wish to use the rprintf functions along with this driver)
updated: Tuesday January 21, 2003
gps.h
gps.c GPS Positioning and Navigation Function Library
(in development)
This library provides a generic way to store and process information received from a GPS receiver. Currently the library only stores the most recent set of GPS data (position, velocity, time) from a GPS receiver. Future revisions will include navigation functions like calculate heading/distance to a waypoint. The processing of incoming serial data packets from GPS hardware is not done in this library. The libraries tsip.c and nmea.c do the packet processing for Trimble Standard Interface Protocol and NMEA-0813 repectively, and store the results in this library.
updated: Wednesday January 29, 2003
ks0108.h
ks0108.c Graphic LCD Driver for HD61202/KS0108-based Displays
This display driver performs the basic functions necessary to access any graphic LCD based on the KS0108 or HD61202 controller chip. For more advanced functions, use this driver in conjunction with glcd.c. KS0108/HD61202 displays typically range in size from 64x32 pixels to 128x128 pixels and up to 3" square. To determine whether a display is compatible, you should look for the above controller chips to be mounted on the PC board attached to the display glass. The controller chips are about 1/2" x 3/4" and have 80+ pins. On larger displays, you may also see slave LCD driver chips with the numbers KS0107 or HD61203. The display will likely have an 18 or 20-pin interface. The interface from the LCD to an AVR processor does not require any additional hardware. If you can locate a datasheet for your display, that plus the information in the ks0108.h file should be all you need to get hooked up. A schematic of the interface wiring is coming.
updated: Tuesday January 21, 2003
nmea.h
nmea.c NMEA Packet Interface for GPS Receivers
This library parses and decodes the standard NMEA data stream from a GPS and stores the position, velocity, and time solutions in the gps.c library.
Library is not yet complete. Parses packets but does not extract data
updated: Tuesday January 21, 2003
servo.h
servo.c Interrupt-driven RC Servo Function Library
A basic interrupt-driven function library that supports the continuous driving of up to eight RC hobby servos. The servos may be driven off any combination of I/O ports and pins. Works best at higher clock speeds 6-8MHz. (NOTE: this version is not compatible with the older AVR-GCC compiler. Get the latest version from here.)
updated: Tuesday January 21, 2003
sta013.h
sta013.c STMicroelectronics STA013 MP3 Player Driver
This library interfaces to the I2C control port of the STA013 MP3 decoder chip. All functions necessary for setup and and control of the decoder chip are included. Supported functions include decoder initialize, decoder start, stop, pause, and resume, get bitrate and sample rate, set volume and tone controls. NOTE: the actual MP3 music data must be transmitted through a separate interface using SPI. The SPI function library is suitable for this.
updated: Tuesday January 21, 2003
tsip.h
tsip.c TSIP Packet Interface for Trimble GPS Receivers
This library parses and decodes the TSIP data stream from a Trimble GPS and stores the position, velocity, and time solutions in the gps.c library. The library also includes functions to transmit TSIP packets to the GPS for configuration and data request.
updated: Tuesday January 21, 2003
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