The I2C protocol shouldn't work open loop. The slave must send an ACK after each byte that is written. I would be very surprised if the PBP routines for I2C were written in a way that did not wait for the slave ACK.
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Re: I2C question w/ MCP23017 Port Expanders
The I2C protocol shouldn't work open loop. The slave must send an ACK after each byte that is written. I would be very surprised if the PBP routines for I2C were written in a way that did not wait for the slave ACK.
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