DN_023.pdf

D ESIGN N OTE

#023

A UTHOR :

K EYWORDS :

AVR FREAKS

AVR ISP, W INDOWS NT ® , W INDOWS ® 2000, P ONY P ROG

This document is originally distributed by AVRfreaks.net, and may be distributed, reproduced, and modified

without restrictions. Updates and additional design notes can be found at: www.AVRfreaks.net

Programming Problems Using STK200/300 Programmer

Introduction

When using the programming dongle provided with the STK200 and STK300 develop-

ment boards, the programming software AVR ISP is most often used. When using this

combination of hardware and software, several people have observed problems when

programming parts both in the STK200/300 boards and in target boards. This document

describes the observed problems and the possible solutions to eliminate these.

Overview

The problem observed is that the programming fails. This is obvious when verification of

the program in the part is done. Not all parts are equally sensitive to this problem, the

AT90S8515, for instance, is often programmed with success, while the ATmega103 is

not. The reason for this is that the required timing in the programming process can vary

between parts, which the programming software does not handle quite as intended. The

problem relates to the following topics:

•

The use of Windows NT ® /Windows ® 2000/Windows ® XP

•

The use of a “fast” PC

The most commonly used version of the programming software, AVR ISP is, at the

present date, version 2.65. This version does not support either Windows NT ® , Win-

dows ® 2000, nor Windows ® XP. If Windows NT ® , Windows ® 2000, or Windows ® XP is

used, there are two existing solutions: Use AVR ISP ver. 2.70b, which at its present

state is a BETA version (ISP27Beta.exe can be downloaded from http://www.avr-

forum.com/avrsource.html ). Note that beta versions are not final versions, and that the

possibility that bugs exist is higher than for release versions. If AVR ® ISP ver. 2.70 is to

be used, make sure to have administrator access for correct installation. Another solu-

tion, which also applies as a solution when using Windows ® 2000, is to use the

shareware programming software called “Pony Prog”. This program can be downloaded

from http://www.lancos.com/prog.html.

If the PC used for the programming is “fast” (an actual level in MHz is difficult to deter-

mine), the programming can fail. It is assumed that the problem is related to weak timing

in the software controlling the programming dongle. The solutions can in this case be to

use a slower PC (obviously) or to use the already mentioned programming software

“Pony Prog”.

Further, notice that AVR ISP ver. 3.xx, is not a newer version than AVR ISP ver. 2.65 –

it is an entirely different software: The AVR ISP ver. 3.xx is for the STK100, which does

not use the dongle programmer.

www.AVRfreaks.net

Design Note #023 – Date: 05/02

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika: