1Ҫ
ʵƽ̨ķLED1LED2LED3LED4ʹйɵĵ˳£
LED1->LED2->LED3->LED4˷¿ϵB3ťʱȫϨ
2Ӻ󷢹ȫٹһӺ󷵻رжǰ״̬йɵε

2 Ӳ·
ϣLED1LED2LED3LED4ֱPC6PC7PC8PC9KeyPB9

3
Ҫ󣬳Ҫ
(1)	PBڵ9Ϊⲿжϣ½Ӵ 
(2)	ȡ˿ĴGPIOC_ODR[15:0]ֵΪC[9:6]λĸLEDͨ   
(3)	ʼʱLEDεKeyʱжϣ
(4)	жϷӳݣȫϨ2Ӻ󷢹ȫٹ1ӺжϷء
̰3ԴļSTM32F10x.sstm32f10x_it.cmain.cSTM32F10x.sΪ룬
жϷӳstm32f10x_it.cУmain.cСֱصĺ
嵥ο
GPIO_ConfigurationGPIO˿ڣGPIO_InitStructureݽṹGPIO˿
GPIO_Initʵĳ˿ڵáSTM32F10xR.LIBSTM3210xD.LIBо
壬߿ͨ5.3ST˾ġARM?-based 32-bit MCU STM32F101xx and 
STM32F103xx Firmware Libraryֲ˽ݽṹԼ
NVIC_ConfigurationǶʽжϿݽں½ڽܣ˴ҪPB9
Ϊⲿжϡ
EXTI9_5_IRQHandlerPB9жϷӳ򣬵Keyť֮󴥷EXTI9_5жϣжϷ
ӳȽȫϨӳ2ȫӳ1֮˳жϷӳ
SysTick_ConfigurationúϵͳʱжϣϵͳʱжϷӳSysTickHandler
ڲ1ʱDelayͿͨϵͳʱӼʵ־ȷʱˡ

4 й
(1)	ʹKeil uVision3 ͨULINK 2ʵ壬ʵĿ¼GPIO_TESTĿ¼µ
GPIO.Uv2̣ӹ̣
(2)	ѡģʽMDK Debug˵ѡStart/Stop Debug SessionCtrl+F5
߼GPIOC_ODR.6GPIOC_ODR.7GPIOC_ODR.8GPIOC_ODR.9Runť
߼пͼ7-11
(3)	ѡӲģʽѡStart/Stop Debug SessionCtrl+F5سУ۲LED
Ƶı仯whileѭʱKeyжϷӳEXTI9_5_IRQHandler()
У۲LEDı仯 
(4)	˳DebugģʽFlash˵>DownloadصFlashУRESETλ
۲LEDƵӦ7-6С

LED״̬	˵    
LED1	LED2	LED3	LED4	
							    Уε
							
							
							
							      ⲿź룬жϣִжϴ
							
