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4 Sep 2010 18:56:37

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Repeated I2C Start Condition
This thread was started in the Serial Forum by user mross on 20-5-2010 14:27
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Topic Posted User
*Repeated I2C Start Condition
Hello all,

I’m using the P87LPC769HD to talk to a SMBus master/host via on-board I2C hardware so to communicate smart battery data to it- my device/software is acting as a SMBus/I2C slave. The SMBus communications protocol sends messages in the following format: (If I am stating the obvious for some, my apologies in advance)

<Master:start condition>
<Master:battery address+read/write (7bits+1bit)>
<Slave:Ack/Nack>
<Master:command code(8bits)>
<Slave:Ack/Nack>
<Master: repeated start condition>
<Master: battery address+read/write (7bits+1bit)>
<Slave:data byte 1(8bits>…
<Slave:data byte n(8bits)>
<Master: stop condition>

I’m getting hung-up on the repeated start command from
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20-5-2010 14:27
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mross
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