Re: [Amforth] TWI - 7segment display Gravitech.us

[Jan K. <kro...@ho...>]

Dear Erich

What should I give in at f-cpu=16000000
Try twi.scan? But no result.

Thanks for any help!

Cheers

Jan

Jan kromhout
Sacharovlaan 3
3223HM Hellevoetsluis-NL

Op 1 jun. 2012 om 21:36 heeft Erich Waelde <ew....@na...> het volgende geschreven:

> Hi Jan,
> 
> 
> On 06/01/2012 08:58 PM, Jan Kromhout wrote:
>> It is not working.
> 
> Where exactly is "it"?
> 
> Can you talk to the twi device? Did you try twi.scan? It should 
> report every device on the twi bus.
> 
> Did you enable the twi subsystem?
> 
> \ enable twi
> \ TWBR = $03, TWPS[10] = $03  ==> 28 kHz (f_cpu: 11059200)
> : +twi ( -- )
>     $00 TWCR c!
>     $03 TWBR c!
>     $03 TWSR c!
> ;
> This code snippet works on atmega32. Check the datasheet whether 
> it is the same for your controller.
> 
>> It seems to hang. Can continue with a hard reset!
> 
> 
> Cheers,
> Erich
> 
> 
> 
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