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I2C Deinit on Master system reset

Question asked by Arun Ravi on May 22, 2017
Latest reply on May 24, 2017 by Arun Ravi

Hello,

I'm working on a project in which there is an inter-board I2C link between the master MSP430F5438A and the slave STM32F207IG. Now whenever the master MSP430 resets(due to the external watchdog), the PE bit (Peripheral Enable bit) present in the I2C control register of STM32F2 is set to zero. This reset of the PE bit causes a deinitialisation of the I2C link. Any idea why the PE bit changes? 

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