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发表于 2014-7-23 09:14:13
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idqiye 发表于 2014-7-23 09:10
如果这样的话就和51不同了,有的高级一点的51片子是先把io口锁定到串口,这样就和32有区别了,fire大哥在 ...
你要的答案都在这代码里,
就是使能串口时钟,使能串口功能就可以了- void USART1_Config(void)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- USART_InitTypeDef USART_InitStructure;
-
- /* config USART1 clock */
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE);
-
- /* USART1 GPIO config */
- /* Configure USART1 Tx (PA.09) as alternate function push-pull */
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_Init(GPIOA, &GPIO_InitStructure);
-
- /* Configure USART1 Rx (PA.10) as input floating */
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
- GPIO_Init(GPIOA, &GPIO_InitStructure);
-
- /* USART1 mode config */
- USART_InitStructure.USART_BaudRate = 115200;
- 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;
- USART_Init(USART1, &USART_InitStructure);
- USART_Cmd(USART1, ENABLE);
- }
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