Fwd: AVR programmer circuit from the Hackathons

[VINAY.V.S SURENDRAN]

---------- Forwarded message ----------
From: Anil Kumar Pugalia <em...@sarika-pugs.com>
Date: Wed, Jul 20, 2011 at 5:34 PM
Subject: Re: AVR programmer circuit from the Hackathons
To: Computer Club India <compute...@googlegroups.com>

Here we go: Attaching the "breadboard connections" as well as the "schematic" for the AVR programmer, which was shown at the Hackathons. J1 is the jumper to put for programming & remove for normal uC operation. J2 is the 5 pin jumper connector to be connected to the Serial Pins of the PC's Serial port. The pin connections are as per the /etc/avrdude/avrdude.conf (This assumes that avrdude package is installed properly). Say if you are using "ponyser" from avrdude.conf, then the DB9 pins would be 8, 7, 5, 4, 3 (currently open), respectively.

You may test, if all these things are fine, just by typing the following command: avrdude -p m16 -P /dev/ttyS0 -c ponyser -t. You may have to change the serial port (/dev/ttyS0) to /dev/ttyUSB0, if you are using an USB to Serial converter. If everything goes well, your ATmega16 should get detected with its correct signature and fuse settings getting displayed, and then providing you a shell prompt for further operations. Then, you may come out of the shell by typing Ctrl+D. And for actually burning a program into the ATmega16, you may follow the steps mentioned below.

Assuming all the above hardware setup is done & verified, you may directly use the example.c, available as part of the examples set downloadable from my website. You may have to change the F_CPU value to 1000000 (1MHz) in the Makefile. Then, typing 'make' would compile it into download.hex (This assumes that you have avr-gcc & avr-libc packages installed properly). Then, download.hex can be programmed into the above setup using the following avrdude command (again this assumes that avrdude package is installed properly): avrdude -p m16 -P /dev/ttyS0 -c ponyser -U flash:w:download.hex. You may have to change the serial port (/dev/ttyS0) to /dev/ttyUSB0, if you are using an USB to Serial converter. As soon as you remove jumper J1, after the programming is successfully complete, viola - you should see the red LED blinking at 1Hz.

Please note while programming if you get the common error showing incorrect device signature (typically 102), just disconnect both the J1 & J2 jumper connections, reconnect them, and try again.

Along with, also attached is the BOM & Shopping listing of the same circuit.

All the attachments have been created & generated using Fritzing (Enlightened to me by Sudar)

Best Regards
Anil

Passion: http://profession.sarika-pugs.com

VINAY.V.S said the following on शुक्रवार  15 जुलाई 2011 08:18 अपराह्न:

hi guys,
           Can anyone pls post the circuit schematic of the AVR
programmer (the one which was built on the breadboard) which was shown
by Vinay and Anil at the Hackathons??? also, pls do include/ mention,
the steps involved in configuring the software (avrdude, etc..) on the
PC and other related stuff???

thank you and with warm regards,
Vinay.V.S