Posted on May 28, 2018 at 15:34Hello,
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,
