我用ZHX1810与STR912的P1.3、P1.5相连，SD为低。可是当我调用函数SCU_UARTIrDASelect(SCU_UART2,SCU_UARTMode_IrDA);并发送数据，TXD引脚没任何反应，可是注释掉这个函数就有输出的脉冲，但我看了不是调制信号。请教问题可能出在哪？请看以下我的设置对吗？
SCU_UARTIrDASelect(SCU_UART2,SCU_UARTMode_IrDA);
GPIO_InitTypeDef GPIO_InitStructure;
UART_InitTypeDef UART_InitStructure;
UART_InitStructure.UART_WordLength = UART_WordLength_8D;
UART_InitStructure.UART_StopBits = UART_StopBits_1;
UART_InitStructure.UART_Parity = UART_Parity_No ;
UART_InitStructure.UART_BaudRate = 9600;
UART_InitStructure.UART_HardwareFlowControl = UART_HardwareFlowControl_None;
UART_InitStructure.UART_Mode = UART_Mode_Tx_Rx;
UART_InitStructure.UART_FIFO = UART_FIFO_Enable;
UART_InitStructure.UART_TxFIFOLevel = UART_FIFOLevel_1_2;
UART_InitStructure.UART_RxFIFOLevel = UART_FIFOLevel_1_2;
SCU_APBPeriphClockConfig(__UART2, ENABLE);
SCU_AHBPeriphReset(__UART2,DISABLE);
/*Gonfigure UART2_Tx pin GPIO1.5*/
GPIO_InitStructure.GPIO_Direction = GPIO_PinOutput;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ;
GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Enable;
GPIO_InitStructure.GPIO_Alternate = GPIO_OutputAlt2;
GPIO_Init (GPIO1, &GPIO_InitStructure);
/*Gonfigure UART2_Rx pin GPIO1.3*/
GPIO_InitStructure.GPIO_Direction = GPIO_PinInput;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ;
GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Enable;
GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1;
GPIO_Init (GPIO1, &GPIO_InitStructure);
UART_DeInit(UART2);
UART_Init(UART2, &UART_InitStructure);
UART_Cmd(UART2, ENABLE);
UART_ITConfig(UART2, UART_IT_Transmit | UART_IT_Receive, ENABLE);
VIC_Config(UART2_ITLine, VIC_IRQ, 3);
VIC_ITCmd(UART2_ITLine, ENABLE);
UART_IrDACmd(IrDA2, ENABLE); |
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