STM32串口用于IrDA通信的设置
#define IrDA_GPIO GPIOA // GPIOA
#define IrDA_TX GPIO_Pin_9 // PA09
#define IrDA_RX GPIO_Pin_10 // PA10
#define IrDA_PD GPIO_Pin_11 // PA11
#define IrDA_USART USART1 // 使用 USART1
#define IrDA_BAUDRATE 230400 // 波特率设置
//------------------------------------------------------------USART IO CONFIG开始
/* USART1 IrDA */
/* Configure USART Tx as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = IrDA_TX;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(IrDA_GPIO, &GPIO_InitStructure);
/* Configure USART Rx as input floating */
GPIO_InitStructure.GPIO_Pin = IrDA_RX;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(IrDA_GPIO, &GPIO_InitStructure);
//------------------------------------------------------------USART IO CONFIG结束
//-----------------------------------------------------------/* IrDA_USART 设置 */
USART_InitStructure.USART_BaudRate = IrDA_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_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
/* Configure IrDA_USART basic and asynchronous paramters */
USART_Init(IrDA_USART, &USART_InitStructure);
USART_ITConfig(IrDA_USART, USART_IT_RXNE, ENABLE);
/* Enable IrDA_USART */
USART_Cmd(IrDA_USART, ENABLE);
/* Set the IrDA_USART prescaler */
USART_SetPrescaler(IrDA_USART, 0x1);
/* Configure the IrDA_USART IrDA mode */
USART_IrDAConfig(IrDA_USART, USART_IrDAMode_Normal);
/* Enable the IrDA_USART IrDA mode */
USART_IrDACmd(IrDA_USART, ENABLE);
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