TCP send issues

Also I manage to ping the chip with no problem (~0.28s response time), so I assume my connection is setup correctly for outcome/income communications.

OK found it ! Argh ! … The problem was in my code… The command send was incorrectly masked !! I made a typo, where the command was masked with 0xf instead of 0xff (I am using Uint16 format) … Alright… it works now… Well since this problem I think I know much more about this device ! Thanks Eugeny for your help, have a good one.

Great, thank you for letting know. Get back if you will have further questions.