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- 2015-9-19
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楼主 |
发表于 2017-1-22 17:29:33
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#include "sys.h"
//#include "usart.h"
#include "led.h"
#include "delay.h"
void My_USART1_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);
GPIO_PinAFConfig(GPIOA,GPIO_PinSource9,GPIO_AF_USART1);
GPIO_PinAFConfig(GPIOA,GPIO_PinSource10,GPIO_AF_USART1);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA,&GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA,&GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = 9600;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx|USART_Mode_Tx;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
GPIO_Init(GPIOA,&GPIO_InitStructure);
USART_Init(USART1,&USART_InitStructure);
USART_Cmd(USART1,ENABLE);
// NVIC_Init(&NVIC_InitStructure);
}
//void USART1_IRQHandler(void)
//{
// unsigned char res;
//// if(USART_GetITStatus(USART1,USART_IT_RXNE) == 0)
// {
// res = USART_ReceiveData(USART1);
// USART_SendData(USART1,res);
// }
//}
int main(void)
{
int t = 0 ;
// NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
LED_Init();
delay_init(168);
My_USART1_Init();
while(1)
{
t++;
t %= 4;
if(t >= 2)GPIO_SetBits(GPIOF,GPIO_Pin_9|GPIO_Pin_10);
else GPIO_ResetBits(GPIOF,GPIO_Pin_9|GPIO_Pin_10);
USART_SendData(USART1,'1');
while(USART_GetFlagStatus(USART1,USART_FLAG_TC)!=SET);
delay_ms(50);
}
}
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