急需简单的串行自发自首0x55程序

连志威

 

我想用串行通讯收发，可是为什么debug调试串行自收自发0x55，收不到结束符号0x0d和0x0a呢，谁发个完整的串行自发自收的简单程序，谢谢

ricefat

发的内容由你来决定，串口本身不会生成结束符号。

连志威

回复【2楼】ricefat:
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我发的就是20个0x55，再加上0x0d和0xoa，用数组接收，可是问什么收不到0x0d和0x0a啊

连志威

回复【3楼】连志威:
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麻烦大神指点一下

jikaishihuaidan

回复【楼主位】连志威:
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#include<usart.h>
void uart_init(u32 bound)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
//使能IO口和串口时钟
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1|RCC_APB2Periph_AFIO,ENABLE);
//复位串口
USART_DeInit(USART1);
//设置IO口参数
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;
GPIO_Init(GPIOA,&GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin=GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA,&GPIO_InitStructure);
//设置串口参数
USART_InitStructure.USART_BaudRate=bound;
USART_InitStructure.USART_WordLength=USART_WordLength_8b;
USART_InitStructure.USART_StopBits=USART_StopBits_1;
USART_InitStructure.USART_Parity=USART_Parity_No;
USART_InitStructure.USART_Mode=USART_Mode_Rx|USART_Mode_Tx;
USART_InitStructure.USART_HardwareFlowControl=USART_HardwareFlowControl_None;
USART_Init(USART1,&USART_InitStructure);
//设置中断
#if EN_USART1_RX
NVIC_InitStructure.NVIC_IRQChannel=USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3;
NVIC_InitStructure.NVIC_IRQChannelSubPriority=3;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);

USART_ITConfig(USART1,USART_IT_RXNE, ENABLE);
#endif
USART_Cmd(USART1,ENABLE);
}
void USART1_IRQHandler(void)
{
u16 res;
res=USART_ReceiveData(USART1);
USART_SendData(USART1, res);
while(USART_GetFlagStatus(USART1,USART_FLAG_TC)==RESET);
USART_ClearFlag(USART1,USART_FLAG_TC);
}
楼主，看看这个行不行

连志威

回复【5楼】jikaishihuaidan:
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好的，谢谢