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Thanks Ben. This helps. This weekend I'll take a look at the state of the relevant SFRs and tweak my code to match yours more closely and see what happens.

Hello Ben,

Thanks very much for trying this out. I sent off my information to CCS Support on Tuesday and have had a couple of pings back to me re: compiler versions, etc so they are moving on it. ...

I installed V4.098 last night, recompiled and ran. No change in the I2C performance....that is to say there isn't any level changes happening on the I2C lines. Any help will be appreciated.

Thank ...

Hi Armondo52

Thanks for the tip. I've been on vacation for awhile but am back and tonight will be trying the new version of the compiler to see if it sorts things out. I have the I2C set to SLOW: ...

Hello FvM

I am running PCWHD PCD v4.093...am I correct in inferring that I2C was less than stable in versions prior to v4.097?

In any event I'll upgrade and try it.

Thanks. Mark

I am attempting to bring up the I2C port on my DSPIC30F5016 design to communicate with an MCP23017. I have written the following app and am not getting any level changes on the SCL and SDA lines (I a ...