Introduction - If you have any usage issues, please Google them yourself
This example demonstrates how to GPIO operation, how to control the GPIO output (leds) and how to detect GPIO inputs (button).
Please use a serial port line connect the COM1 port development board to the PC serial port (or USB serial port), and then open the super terminal software (XP built-in or SecureCRT
Software), can see the operation of the routine in PC software interface information.