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IIC acknowledge, but no action from the module

Question asked by Adrien Segura on Jun 20, 2019
Latest reply on Jun 21, 2019 by TomE


I work on a coldfire MCF51CN128 to communicate with IIC on a module TCA9535 wich is an IIC module.

I'm trying to write on his ports, but, the module has no reaction, the writing does not work. But, he did had a reaction because he send me an acknowledge. There is my frame :



Do you have any idea of what could be the problem?


Thanks for your help !


Adrien Segura