本例程演示了STM开发板上的外部中断功能。运行时液晶屏上显示： STM32F10x DEMO EXTI TEST 按K1产生一次外部中断，L3将闪烁一次。 -This routine demonstrates STM development board external interrupt function. Run time is displayed on the LCD screen: STM32F10x DEMO EXTI TEST K1 generate an exter

基于stm32f10x做的mp3播放器源代码，PCB板马上上传-Based stm32f10x do mp3 player source code, PCB board immediately upload