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[avr-chat] Re: AVR-chat Digest, Vol 29, Issue 2

From: Steve Franks
Subject: [avr-chat] Re: AVR-chat Digest, Vol 29, Issue 2
Date: Fri, 1 Jun 2007 16:53:53 -0700

Try the older doc's, such as for the origonal avr-isp, or the origonal
jtagice.  Basically, you hook up to the SPI port and the reset pin, as
well as vcc/gnd, except on some devices (m128) which use the UART0
pins instead of spi.  It should be hidden in the "serial memory
programming" section of the mega48 datasheet somewhere also.


On 6/1/07, address@hidden <address@hidden> wrote:
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Today's Topics:

   1. How to connect the AVRISP mkII to the chip? (address@hidden)


Message: 1
Date: Fri, 1 Jun 2007 09:17:25 -0600
From: address@hidden
Subject: [avr-chat] How to connect the AVRISP mkII to the chip?
To: address@hidden
Message-ID: <address@hidden>
Content-Type: text/plain;

I'm making some progress, but I'm stuck again.  The good news: I found
good instructions for building avrdude to work with this programmer (I
had already built avrdude, but hadn't realized the need for libusb, so
would have been facing frustration).   For the record, these handy
instructions are at the Arduino site:

The bad news: I can't find anything that explains how to hook the ISP
up to the ATmega48.  The ISP came with a CD-ROM full of documentation,
but seems to be lacking this important bit.  The documentation for the
AVRISP mkII begins at <tools/programmer/avrispmkii/index.html>.  But
this is just an introductory page; for "complete documentation" they
simply point to the AVR Studio docs, which do have a link to the AVRISP
mkII -- but it leads right back to the same introductory page we just

The handy Arduino page above doesn't help either, because they're
assuming a board with an ISP port already wired up.

I looked in the ATmega48 datasheet, and found a chapter on programming,
but it seems to be describing what the ISP will be doing for me:
individually setting lines high and low at various times, executing
machine instructions, etc.  I don't think that's what I'm looking for.

Surely somewhere there is a diagram or table showing how the six pins
on the ISP cable map up to some six pins on the ATmega48... can anyone
give me a clue?

- Joe

Joe Strout -- address@hidden
Strout Custom Solutions


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End of AVR-chat Digest, Vol 29, Issue 2

Steve Franks, KE7BTE
Staff Engineer
La Palma Devices, LLC
(520) 312-0089

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