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AVR-USBASP is used as an ISP programmer for flashing AVR ICs such as ATMEGA16, ATMEGA32, ATMEGA328 etc...

Usbasp

PinOut Edit

The target pinout is as follows

Pinout usbasp

Installing Driver Edit

The connection is to be made as follows.

Connect usbasp

Windows OS Edit

After connecting the USBASP programmer to the USB port for the first time user have to locate the driver file from the this link. On successful installation the device manager should list device as ELEMENTZ AVR-USB PROGRMMER .

Driver usbasp

Then connect the AVR Programmer to your project board. For other boards connect the 10 pin connector by making use of the pinout mentioned above.


Linux OS Edit

Recent Debian distributions such as Ubuntu/LinuxMint doesn't require any driver installation.

Using AVRDude GUI tool(Windows Only)Edit

For programming your IC AVRDUDE GUI is required which can be downloaded from this link.

Configuration1

Open AVRDUDE GUI. Make sure the configuration is done properly according to the picture shown below.

Configuration3


Using AVRDude commandline Edit

Windows OS Edit

Executing AVRdude:

Fortunately AVRdude is command line tool, so that you can be very sure of what you are doing with your uC Or Unfortunately AVRdude is command line tool, so you will have to spend little time to get familiar with it :)

– Open the command prompt. (Press WinKey + R. Run dialogbox will appear. Type cmd and press enter.)

Fig1commandprompt

– Navigate to the directory where .hex file is located. For example :

> cd D:/CodeDirectory d:

Fig2navigate

To burn the hex file enter following command. Consider for example name of my hex file is io.hex : > avrdude –c usbasp –p m16 –u –U flash:w:io.hex

You should see something like this :

Fig3pgmdone

Linux OS Edit

Install avrdude from commandline as

sudo apt-get install avrdude

Navigate to the code directory where the hex file is located.

avrdude –c usbasp –p m16 –u –U flash:w:io.hex

Programming ATmega16/32 using AVR-USBASP Edit

ATmega16 & ATmega32, having Advanced Virtual RISC Architecture are microcontrollers having breadboard friendly 40 pin DIP package.This post is intended to help beginners program ATmega16/32 IC’s using USBASP.

The USBASP is a serial programmer having Serial Peripheral Interface for programming . The programmer consists of 10 pin standard serial connector for connecting to the target board for programming. The USBASP consists of the ATmega8 IC which can be connected through USB port as ELEMENTZ AVR PROGRAMMER by providing suitable driver form here.


Pinout description is as follows.

Pin Configuration
Net Description Pin-ATMEGA16/32
MOSI Master Out Slave In 6
MISO Master Out Save In 7
SCK Serial Clock 8
TRST Target Reset 9
TVCC Target VCC 10
GND Ground 11


Fuse Settings
Low fuse High fuse Description
E1 99 Factory Default– Works with internal 1 MHz RC Oscillator
FF 99 Factory Default– Works with External 8-16 MHz Crystal Oscillator with JTAG Enabled
FF D9 Factory Default– Works with External 8-16 MHz Crystal Oscillator with JTAG Disabled


Inorder to make external crystal oscillators to work, fuse settings should be changed.

Programming ATmega8 using AVR-USBASP Edit

Connection of ATMEGA8 is as following. Pinout description is as follows.

Pin Configuration
Net Description Pin-ATMEGA8
MOSI Master Out Slave In 17
MISO Master Out Save In 18
SCK Serial Clock 19
TRST Target Reset 1
TVCC Target VCC 7
GND Ground 8


Some popular fuse settings are as follows.

Fuse Settings
Low fuse High fuse Description
E1 D9 Factory Default– Works with internal 1 MHz RC Oscillator
E4 D9 Works with Internal 8 MHz RC Oscillator
FF D9 Works with External 8-16 MHz Crystal Oscillator

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