[lm-sensors] Re: I2C block reads with i2c-viapro: testers wanted
khc at pm.waw.pl
Fri Aug 12 17:29:55 CEST 2005
Jean Delvare <khali at linux-fr.org> writes:
> In I2C mode, you can even alternate as many read and write sequences you
> want in a single transaction. The target chip would of course need to
> know how to interpret such a transaction though. I've never seen this
> possibility used so far.
Is this mode supported by the common (such as VIA south bridge)
> In SMBus mode, you are limited by the transaction types that have been
> defined, but a number of them are composed of a write transaction and a
> read transaction (separated by what is known as a "repeated start").
> Read Byte, Read Word, Read Block and Read I2C Block are such
> transactions. See the SMBus specification for the details.
Ok. I guest there are just different codes for 8- and 16-bit addressing.
> The I2C specifications are available from Philips. The SMBus
> specifications are available from smbus.org. Intel also has good
> datasheets for all ICH chips.
> More generally, see the lm_sensors project's links page:
> and also:
> Hope that helps,
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