AVR-Chat

On Tue, Dec 2, 2008 at 2:34 PM, Richard <richardt.bradshaw@tesco.net> wrote:

>   Hi everybody I have been hanging around here for a while, great forum.
> Do any of you have any experience with accelerometers?
>




Make sure the one you pick will not interfere with the AVR In System
Programming (ISP).  The ones that share I2C/SPI select on a single
pin are prone to this problem.   I have detailed the issue in
my blog at:

http://blog.designer-iii.com/avr_isp_spi/20081116-10511-Digital-MEMS-Accelerometers-will-not-work-with-AVR-ISP-using-SPI

To sumerize it, what happens is that the I2C mode can put a I2C "Ack" on the
ISP
lines if the ISP data happens to look like the Accelerometer's I2C address,
then you can not program and/or verify the program with ISP.




> --
http://www.wearablesmartsensors.com/
http://www.softwaresafety.net/
http://www.designer-iii.com/
http://www.unusualresearch.com/


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