[En-Nut-Discussion] Writing I2C with Charon II, TDA8444 ?

[Joel Dotreppe]

  Hello to all, 

I the following sequence in the procedure ' TwMasterTransact' transmits:  
SLA:  0X20 
TXDATA[0 ]:  0XF0 
TXDATA[1 ]:  0X3F
...  
TXLEN:  9
 RXDATA[0 ]:  0 
RXSIZ:  0
 DMO:500 
and I always obtain an error 0X04, it seems that the address of the TDA8444 (addresses basic 0X40) not recognized silk!  why?  
however for the PCF8591 and the PCF8574, no problems. 
 I tested the hardware with another system, the result is ok without problems. 
 
Thank you in advance.  

Joel
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