Fw: [En-Nut-Discussion] CHARON II I2C slave adress 0x20 :-(

[Joel Dotreppe]

Cosmin,

Small précission :

the same assembly comprises also a PCF8574A and a PCF8591, and the 
communication is ok.

Joel

----- Original Message ----- 
From: "Joel Dotreppe" <joel.dotreppe at infonie.be>
To: "Ethernut User Chat (English)" <en-nut-discussion at egnite.de>
Sent: Tuesday, December 28, 2004 7:29 PM
Subject: Re: [En-Nut-Discussion] CHARON II I2C slave adress 0x20 :-(


> Cosmin,
>
> thank for your response.
>
> yes i  have pullup resistors 2x 4k7.
>
> the assembly existed already in the past, but on the port printer.
>
> best Regards,
>
> Joel
>
> ----- Original Message ----- 
> From: "Cosmin Buhu" <lists at byteworks.ro>
> To: "Ethernut User Chat (English)" <en-nut-discussion at egnite.de>
> Sent: Tuesday, December 28, 2004 6:01 PM
> Subject: Re: [En-Nut-Discussion] CHARON II I2C slave adress 0x20 :-(
>
>
>>
>> ----- Original Message -----
>> From: "Joel Dotreppe" <joel.dotreppe at infonie.be>
>> To: "Ethernut User Chat (English)" <en-nut-discussion at egnite.de>
>> Sent: Tuesday, December 28, 2004 5:13 PM
>> Subject: [En-Nut-Discussion] CHARON II I2C slave adress 0x20 :-(
>>
>>
>>>Hello has all,
>>>Y still has to you it nobody who is not in vacancy? :-)\
>> >Can somebody say to me if it is normal that I do not manage to write
>> towards the address 0x20 on bus I2C ?
>>>The hardware seems correct! (TDA8444P)
>> >example:
>>>  u_char Wbuff[9]={0xF0,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F };
>> ...
>>> TwMasterTransact(0x20, Wbuff, 9, Rbuff, 0, 500);
>>> Result:TwMasterError:  0x04!?
>>> Thank you in advance & happy news year for all.
>>>Joel Dotreppe.
>>
>>    Hello,
>>    0x04 means TWERR_SLA_NACK, No slave response. Do you have pullup
>> resistors
>> on twi lines?
>>
>> Regards,
>> Cosmin
>>
>>
>>
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