atmega


Posted on Feb 5, 2014

Once you have compiled your C or C+ program into an AVR binary using AVR-GCC, you will need to `burn` it to the chip itself. This can be done with one of three applications: AVRDUDE, UISP, or AVR Studio. In order to actually get one of those applications talking to your chip, you will need hardware to plug the chip into your computer.


atmega
Click here to download the full size of the above Circuit.

There are five pins on the chip for something called an In-System Programmer, or ISP for short. These pins are used by your computer to program the chip. A common piece of hardware for connecting these ISP pins to one of your PC`s USB ports is the AVRISP mkII. These usually sell for $25 to $30, and are one of the easiest programmers to use. If you don`t feel like going for one of those, you can also build your own Parallel Port ISP programmer without trouble. There are a number of designs for a parallel programmer, but this is the simplest. Arduino is an AVR-based prototyping board with an emphasis on ease of use. It has breakout headers for I/O pins and power. It also features a USB interface using the FT232RL chip, which allows RS232 serial communication through a USB device, eliminating the need for a separate AVR programmer. The Arduino project also has an Integrated Development Environment for writing AVR code in a C/C+-derived language called Wiring. The IDE also includes many helpful libraries and a nice function framework. Check out the Arduino website ! The Arduino bootloader will flash Pin 19 (PB5) twice on a 500ms interval at boot-up. The low-power LED is meant for this, or for your own software`s status monitor. Use the 470 ohm resistor in series with the LED. ATmega chips programmed by the Arduino will work as stand-alone microcontrollers. However, in order to use a new ATmega with the Arduino, you must write...




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Voltage Controlled Switch with 555
Capacitance meter with 555
Filters
The CDMS II Veto Readout Electronics
How LCD Display Interface Circuit works
bugbot
io port programing chalange
Sound operated flip flop
Boss SD-1 Super OverDrive guitar pedal schematic diagram
Voltage Regulator Calculation
edm production circuit



Top