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

[Cosmin Buhu]

----- 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