[En-Nut-Discussion] anybody has been tested the MEGA128A on EtherNut 1.3?

[Ulrich Prinz]

Please check the Xtals datasheets. There should be given some information about the oscillation resistance and capacity. Compare this with the data from the AVR datasheet. May be the Xtal is not defect, but it doesn't start cause the oscillator circuit is missing a capacitor.
Mismatch Xtals either don't oscillate or they do it on the wrong frequency.

Ulrich



DreamCat <huayuliang at gmail.com> schrieb:

>thanks .... I relace it with new 32.768kHz crystal.
>
>this crystal is not easy demaged. but this time...I'm wrong.
>
>thanks again..
>
>and then, I will test ATMGA128A again.
>
>
>2011/7/26 Harald Kipp <harald.kipp at egnite.de>
>
>> Hi,
>>
>> On 7/26/2011 9:37 AM, DreamCat wrote:
>> > you can see, all is ok. I can send broadcasts, but when I choice X,
>and
>> > after I setup the network, the webserver can't start.
>>
>> Typically this happens if the 32kHz oscillator is not working.
>>
>> Alternatively you may enable and set the "Fixed MCU clock"
>> (NUT_CPU_FREQ) in the Configurator.
>>
>> Regards,
>>
>> Harald
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>>
>
>
>
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