WinAVR is a set of open source software development tools for C programming the AVR microcontroller family. It includes the GNU GCC compiler for C and the Programmers Notepad.
To learn programming in C you have to install WinAVR first. This small project let you make running leds. You need a attiny2312 microcontroller, eight LED's and 8 resistors of 150ohm.
Go to http://winavr.sourceforge.net/index.html and download and install the latest version of the WinAVR package.
The C code will be written using the Programmers Notepad, it is included in the WinAVR package.
You can use the ATTiny2313 projects board and a small breadboard to build your C-projects on. You can buy it at www.bizztronix.eu. To build the circuit you can use the LED board or use a small breadboard.
Put the LED in the breadboard with the short leg on the resistor side. Use the 150-Ohm resistors to jumper to the ground strip. Use a flat cable and connect the wires to the beadboard. Plug in the flat-cable connector in the PORTB connector of the ATTiny2313 board. Below you see the schematic.
In the WinAVR main folder make a new sub folder called 'runningleds' for this project.
Copy '../WinAVR/Samples/makefile' (notice that is has no extension) to the 'runningleds' folder.
Open Programmers Notepad, click File, then click New, then click C/C++ and name it runningleds.c.
Save it in the runningleds folder and type exactly as shown below: (or copy and paste it)
//programname: running leds
#define F_CPU = 20000000;
int main (void)
Click File and save 'runningleds.c' to the runningleds folder.
Open the file 'makefile' in your runningleds folder.
Change these lines to:
MCU = attiny2313
FORMAT = ihex
TARGET = runningleds
- Save and close the file
- Open Tools menu and click [WinAVR] Make all to make the runningleds.hex file.
WinAVR and Windows 8
if you use WinAVR with Windows 8 you can probably get an error during compiling.
Copy the msys-1.0.dlll file into the [WinAVR] utils\bin directory then the compiler will work like before. You can download the file on the downloads page of this article.
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