STM GPIO reset

To reset the GPIO (General Purpose Input/Output) pins of an STM (STMicroelectronics) microcontroller, you can follow these steps:

1. Set the GPIO pins to their default state: You can do this by setting the GPIO pins to their default state (usually input), which can be done by configuring the GPIO registers accordingly.

2. Toggle the reset pin: Most STM microcontrollers have a dedicated reset pin, which can be used to reset the device. You can toggle this pin to reset the device and thus reset all the GPIO pins to their default state.

3. Use software reset: If the reset pin is not available or not accessible, you can use a software reset to reset the device. This can be done by writing to the system control register (SCB) and triggering a software reset.

Note that resetting the GPIO pins will also reset any other peripherals and registers that depend on them, so you should be careful when using a reset to avoid losing important data or configurations.