vipfanghui 发表于 2015-8-21 15:08:08

stmf030 串口1 重映射问题


我写的f0xx的配置，这个不行还请修正： void usart1_init(unsigned long BaudRate)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;

USART_InitStructure.USART_BaudRate = BaudRate;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;   /* Enable GPIO clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);

/* Connect PXx to USARTx_Tx */
GPIO_PinAFConfig(GPIOB, GPIO_PinSource6, GPIO_AF_0);/* Connect PXx to USARTx_Rx */
GPIO_PinAFConfig(GPIOB, GPIO_PinSource7, GPIO_AF_0);

/*GPIO_PinRemapConfig(GPIO_Remap_USART1,ENABLE);*/
//f0xx中没有这个函数


/* Enable USART clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
/* Configure USART Tx as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOB, &GPIO_InitStructure);/* Configure USART Rx as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
GPIO_Init(GPIOB,&GPIO_InitStructure);/* USART configuration */
USART_Init(USART1,&USART_InitStructure);/* Enable USART */
USART_Cmd(USART1, ENABLE);
}





怎么用串口1的重映射啊，映射到PB6和PB7上去。PA9和PA10被占用了。搜索

请大神帮忙啊。在线等。

你好我好大家好！ 发表于 2015-8-23 21:47:23

帮顶                     

stary666 发表于 2015-8-24 09:27:20

看看，，，，，，，，，，，

vipfanghui 发表于 2015-8-26 14:42:04

回来结贴。
问题解决了。
这是我调试通过的配置：
void usart1_init(unsigned long BaudRate)
{
    GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;

    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);

GPIO_PinAFConfig(GPIOB,GPIO_PinSource6, GPIO_AF_0);
GPIO_PinAFConfig(GPIOB,GPIO_PinSource7, GPIO_AF_0);

/* Configure USART Tx as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
/* Configure USART Rx as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
GPIO_Init(GPIOB,&GPIO_InitStructure);


RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 , ENABLE );

NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;   
NVIC_InitStructure.NVIC_IRQChannelPriority = 0;   
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);   

USART_InitStructure.USART_BaudRate = BaudRate;
USART_InitStructure.USART_WordLength =USART_WordLength_8b;
USART_InitStructure.USART_StopBits =USART_StopBits_1 ;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode =USART_Mode_Tx | USART_Mode_Rx ;

/* USART configuration */
USART_Init(USART1,&USART_InitStructure);
    /* Enable USART */
//USART_ITConfig(USART1, USART_IT_TC, ENABLE);
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
USART_Cmd(USART1, ENABLE);
}
映射到PA6和PA7上去了。

chenshoubao0 发表于 2020-4-29 18:26:22

你好，看来看去是只是加了一个中断配置啊，50M改为10M映射到底是哪一句啊
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