my project is used nrf51822 mcu, it contains SIM, when the mcu is reading SIM data, and at the same, I take out theSIM, and the 51822's pin which is link with SIM is can't control,the IO is unnormal.
You keep saying that. But how do you expect anyone to help you if you don't answer the questions asked?
Remember: nobody else can see your system; nobody else knows anything about your system. We have no access to it other than by asking you questions. If you don't make the effort to answer those questions, it is impossible to help you.
