On the I2C module in the BlueNRG-2, the MCR Register has an 'SB' bit, "The Start Byte procedure is prefixed to the current transaction". What does this bit actually do? It does not seem to be documented anywhere.

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Winfred LUBest answer

ST Employee

It is used to enable/disable sending a start byte, following the I2C start condition and prefixing to this transaction (before the address byte).

Winfred LUBest answer

ST Employee

It is used to enable/disable sending a start byte, following the I2C start condition and prefixing to this transaction (before the address byte).

Associate

Ah, right, before the address byte..... OK, thanks for replying!

John

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