Re: [PATCH 2/3] i2c: slave-eeprom: add eeprom simulator driver

[Alexander Kochetkov]

22 нояб. 2014 г., в 21:12, Wolfram Sang <wsa@xxxxxxxxxxxxx> написал(а):

> IMO a repeated start is to ensure that two messages arrive at the slave
> without interruption from another master. I can't think why a slave
> should know which type of start that was. In fact, if it does that would
> raise an eyebrow for me. Do you have an example?

It is used to implement Device ID reading.
Not sure, that the feature is really needed for the first release.

See [1] "3.1.17 Device ID" chapter on page "20 of 64"
See [2] "7.2.2 Device ID (PCA9671 ID field)" chapter

[1] UM10204 I2C-bus specification and user manual (http://www.nxp.com/documents/user_manual/UM10204.pdf)
[2] PCA9671 (http://www.nxp.com/documents/data_sheet/PCA9671.pdf)

Alexander.

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