STM32 例程-4 Proteus下串口发送数据

1、配置端口代码如下

void usart1_config()
{
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1|RCC_APB2Periph_AFIO,ENABLE);
    GPIO_InitTypeDef a;
    a.GPIO_Pin=GPIO_Pin_9;
    a.GPIO_Speed=GPIO_Speed_50MHz;
    a.GPIO_Mode=GPIO_Mode_AF_PP;
    GPIO_Init(GPIOA,&a);

    a.GPIO_Pin=GPIO_Pin_10;
    a.GPIO_Mode=GPIO_Mode_IN_FLOATING;
    a.GPIO_Speed=GPIO_Speed_50MHz;
    GPIO_Init(GPIOA,&a);

    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
    NVIC_InitTypeDef b;
    b.NVIC_IRQChannel = USART1_IRQn;
    b.NVIC_IRQChannelPreemptionPriority = 1;
    b.NVIC_IRQChannelSubPriority = 1;
    b.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&b);

    USART_InitTypeDef c;
    c.USART_BaudRate=9600;
    c.USART_HardwareFlowControl=USART_HardwareFlowControl_None;
    c.USART_Mode=USART_Mode_Rx|USART_Mode_Tx;
    c.USART_WordLength=USART_WordLength_8b;
    c.USART_Parity=USART_Parity_No; 
    c.USART_StopBits=USART_StopBits_1;
    USART_Init(USART1,&c);
    USART_Cmd(USART1,ENABLE);
}

　　

2、完整代码如下

#include "stm32f10x.h"
__IO uint32_t TimingDelay;
u16 i=0;
#include "stm32f10x.h"
#include "stm32f10x_gpio.h"
#include "stm32f10x_usart.h"
#include "misc.h" 
#include "stdio.h" 
void usart1_config()
{
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1|RCC_APB2Periph_AFIO,ENABLE);
    GPIO_InitTypeDef a;
    a.GPIO_Pin=GPIO_Pin_9;
    a.GPIO_Speed=GPIO_Speed_50MHz;
    a.GPIO_Mode=GPIO_Mode_AF_PP;
    GPIO_Init(GPIOA,&a);

    a.GPIO_Pin=GPIO_Pin_10;
    a.GPIO_Mode=GPIO_Mode_IN_FLOATING;
    a.GPIO_Speed=GPIO_Speed_50MHz;
    GPIO_Init(GPIOA,&a);

    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
    NVIC_InitTypeDef b;
    b.NVIC_IRQChannel = USART1_IRQn;
    b.NVIC_IRQChannelPreemptionPriority = 1;
    b.NVIC_IRQChannelSubPriority = 1;
    b.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&b);

    USART_InitTypeDef c;
    c.USART_BaudRate=9600;
    c.USART_HardwareFlowControl=USART_HardwareFlowControl_None;
    c.USART_Mode=USART_Mode_Rx|USART_Mode_Tx;
    c.USART_WordLength=USART_WordLength_8b;
    c.USART_Parity=USART_Parity_No; 
    c.USART_StopBits=USART_StopBits_1;
    USART_Init(USART1,&c);
    USART_Cmd(USART1,ENABLE);
}

void LED_GPIO_Config(void)
{
	  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC,ENABLE);
	  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3,ENABLE);
	  GPIO_InitTypeDef GPIO_InitStructure;
    GPIO_InitStructure.GPIO_Pin=GPIO_Pin_8;
    GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP;
    GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
    GPIO_Init(GPIOC,&GPIO_InitStructure);
	
    GPIO_InitStructure.GPIO_Pin=GPIO_Pin_9;
    GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IPU ;
    GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
    GPIO_Init(GPIOC,&GPIO_InitStructure);
	
	  GPIO_InitStructure.GPIO_Pin=GPIO_Pin_7;
    GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP;
    GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
    GPIO_Init(GPIOC,&GPIO_InitStructure);
}
void NVIC_Configuare(void)
{
		NVIC_InitTypeDef NVIC_InitStructure;
		NVIC_SetVectorTable(NVIC_VectTab_FLASH,0x0);
		NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
		NVIC_InitStructure.NVIC_IRQChannel=TIM3_IRQn;
		NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0;
		NVIC_InitStructure.NVIC_IRQChannelSubPriority=0x0F;
		NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
		NVIC_Init(&NVIC_InitStructure);
}
void TIM3_Configuare(void)
{
    TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
    TIM_TimeBaseStructure.TIM_Period = 10-1;                  
    TIM_TimeBaseStructure.TIM_Prescaler =(200-1);    
    TIM_TimeBaseStructure.TIM_ClockDivision = 0;         
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;    
    TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); 
    
    TIM_ITConfig(TIM3,TIM_IT_Update|TIM_IT_Trigger,ENABLE); 
    TIM_Cmd(TIM3, ENABLE);  

}
void delay_nms(__IO uint32_t nTime)
{
		TimingDelay=nTime;
		while(TimingDelay!=0);
}
void Init_SysTick(void){

	if(SysTick_Config(SystemCoreClock/1000))
		while(1);
}
int main(void)
{
	

		u8 kent=0;
		SystemInit();
		RCC_ClockSecuritySystemCmd(ENABLE);
		LED_GPIO_Config();
		NVIC_Configuare();
		TIM3_Configuare();
		Init_SysTick();	
		usart1_config();
		USART_SendData(USART1,'0');
		while(1)
		{
			if(GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_9)==0)
			{
				delay_nms(10);
				if(GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_9)==0)
				kent++;
				if(kent%2)
				USART_SendData(USART1,'1');
				else
					{USART_SendData(USART1,'2');kent=0;} 
				while(GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_9)==0);
			}
			
		}
}

3、Proteus界面

 4、注意仿真芯片频率至少要设置为8M,低于8M乱码。 ,