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I2C ISSUE ON NUCLEO-F429ZI

Question asked by yang hong on May 28, 2018

Hello,

 

I am using MCP23008E/P with Nucleo-F429ZI through I2C. It worked at the beginning, and but now I always has  HAL_I2C_ERROR_AF error on transmission. When I hook up scope, I find it looks transmission is broken after it sent device address. I use standard HAL_I2C library, do you anybody know any reason caused issue?

 

Regards,

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