/*!
\file readme.txt
\brief description of the EXTI Key example
*/
/*
Copyright (C) 2017 GigaDevice
2017-06-06, V1.0.0, firmware for GD32F3x0
*/
This demo is based on the GD32350R-EVAL board, it shows how to generate
the interrupt request, and toggle the LED. After the system start-up, LED1
is on. When Tamper Key is pressed, LED2 is toggled, it is switched on; when
Tamper Key is pressed once again, LED2 is toggled, it is switched off.