LPC824 I2C2 Drops a Clock

Discussion created by lpcware Employee on Jun 15, 2016
Content originally posted in LPCWare by FirmLogic on Fri Jan 09 22:13:07 MST 2015
Our firmware experiences failed CRC checks occasionally. Using scope and logic analyzer, we tracked down to the I2C2 device issuing a NAK when firmware sent a "Continue" command.  Does not occur on any other I2C port.  What may be causing this problem?

Using LPCopen library.  Using I2C1, 2, & 3 as SMBus running at 100KHz.

- Mike Dawson -