Society of Robots - Robot Forum

Software => Software => Topic started by: superchiku on April 05, 2008, 04:12:02 AM

Title: strange error with microcontroller
Post by: superchiku on April 05, 2008, 04:12:02 AM

i bought this new atmega16 which worked great until this day when i tried to progam it i got this unusual error

device signature invalied : 0xffff

i checked my power supply and connection and everything seemed to be allright, i used another mcu in its place and it worked great with the same state of connections and power.

Have i blown this microcontroller??

Title: Re: strange error with microcontroller
Post by: Admin on April 06, 2008, 11:33:18 AM

Lower the programmer ISP frequency to something really low. If the AVR is set to a low frequency, but the programmer is set too high, you could get invalid device signatures.

Title: Re: strange error with microcontroller
Post by: superchiku on April 06, 2008, 11:37:25 AM

no the frequency is right coz i programmed another mcu using the same hardware,no problems whatsoever

only this one gives problem

Title: Re: strange error with microcontroller
Post by: benji on April 09, 2008, 02:51:27 AM

if the whole thing works by trying another similar micro then propably your atmega16 is blown up,,,
did you change any fuses that you dont know about?

Title: Re: strange error with microcontroller
Post by: superchiku on April 09, 2008, 02:52:38 AM

as i told bfore the changes in the fuses were similar with both mcu wone works another doesnt so i guess its just gone  :(