STM32F030控制蜂鸣器定时响和控制LED亮

 一：STM32F030控制蜂鸣器定时响

(1)main.c中：
u16 StartTime=0; void main() {StartTime=500;//蜂鸣器响的时长SPEEK(1); }void SPEEK(u8 num) {TIM_Cmd(TIM2, ENABLE); //开启时钟 }(2)hardware_conf.h中：
#define Speak(tmp) GPIOB->ODR=tmp?(GPIOB->ODR|1<<8):(GPIOB->ODR&(~(1<<8)))(3)stm32f10x_it.c中：
extern void SPEEK(u8 num);void SysTick_Handler(void) { if(StartTime>0){StartTime--;if(StartTime==0){Speak(1);TIM_Cmd(TIM2, DISABLE); //ژҕ}}}

二：STM32F030控制LED亮

（1）main.c中：

void Leddisp(u8 tempvalue,u8 state) {u8 sendnumber;if(displaying==0){displaying=1;switch(tempvalue){case HEAT_TEMP60:   LED_Buff[2]=state?0xDF:0x1f;break;case HEAT_TEMP70:   LED_Buff[3]=state?0xDF:0x1f;break;case HEAT_TEMP80:   LED_Buff[0]=state?0xDF:0x1f;break;case HEAT_TEMP90:   LED_Buff[5]=state?0xDF:0x1f;break;case HEAT_TEMP100:  LED_Buff[4]=state?0xDF:0x1f;break;case WARM_KEY:      LED_Buff[1]=state?0xDF:0x1f;break;case WIFI_KEY:      LED_Buff[6]=state?0xDF:0x1f;break;case All_LIGHT_ON:  memset(LED_Buff,0xDF,8);break;case ALL_LIGHT_OFF: memset(LED_Buff,0x1f,8);break;case SIX_LIGHT_ON:  memset(LED_Buff,0xDF,6);break;case SIX_LIGHT_OFF: memset(LED_Buff,0x1F,6);break;default: break;}   EXTI->IMR &= ~EXTI_Line0;EXTI->EMR &= ~EXTI_Line0;delay(20);//需要改小  2016-3-10while(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_0)==1);  sendnumber=20;while(I2C1_Write_NBytes(IQS333_ADDR, PWM_DUTY, 8, &LED_Buff[0])!=0){I2C_StopModeCmd(I2C1,ENABLE);//I2C_GenerateSTOP(I2C1,ENABLE);sendnumber--;if(sendnumber==0)break;}EXTI->IMR |= EXTI_Line0;EXTI->EMR |= EXTI_Line0;displaying=0;}else{sendnumber=0;} }void delay(u16 num) {u16 i,j;for(i=0;i<num;i++)for(j=0;j<0x800;j++); }void main() {Leddisp(HEAT_TEMP100,1);//按钮HEAT_TEMP100灯亮delay(600);Leddisp(HEAT_TEMP100,0);//灭 } u8 LED_Buff[8]={0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,};

（2）hardware_conf.h中：
#define WARM_KEY 1 #define WIFI_KEY 2 #define All_LIGHT_ON 3 #define ALL_LIGHT_OFF 4 #define SIX_LIGHT_ON 5 #define SIX_LIGHT_OFF 6 #define HEAT_TEMP60 60 #define HEAT_TEMP70 70 #define HEAT_TEMP80 80 #define HEAT_TEMP90 90 #define HEAT_TEMP100 100

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