Lpc2000

What should be the I2CONSET value when a restart is required?

The events are:
  I2CONSET = START
  Slave Addr Write
  Command Byte
  I2CONSET = ????  // restart
  Slave Addr Read
  Followed by 1 or more reads until
  I2CONSET = STOP

> The events are:
>   I2CONSET = START
>   Slave Addr Write
>   Command Byte
>   I2CONSET = ????  // restart
>   Slave Addr Read
>   Followed by 1 or more reads until
>   I2CONSET = STOP

At the ????, you would just need to set the START bit again (0x20); if
all goes well, you will then enter state 0x10 (instead of 0x08). Note
that you also have to clear the start bit after getting into states
0x08  and/or ox10 (through I2CONCLR). The STOP bit is cleared
automatically by the hardware, but the start bit is not.

I hope this helps,
Thiadmer

why when I set the STA bit and scope the I2C bus, I see data being 
transmited? I didn't write anything in the I2DAT register!

Gus
--- In lpc2000@yahoogroups.com, "Thiadmer Riemersma (ITB 
CompuPhase)" <go@c...> wrote:
> > The events are:
> >   I2CONSET = START
> >   Slave Addr Write
> >   Command Byte
> >   I2CONSET = ????  // restart
> >   Slave Addr Read
> >   Followed by 1 or more reads until
> >   I2CONSET = STOP
> 
> At the ????, you would just need to set the START bit again 
(0x20); if
> all goes well, you will then enter state 0x10 (instead of 0x08). 
Note

> that you also have to clear the start bit after getting into states
> 0x08  and/or ox10 (through I2CONCLR). The STOP bit is cleared
> automatically by the hardware, but the start bit is not.
> 
> I hope this helps,
> Thiadmer