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代码如下,用的串口5
上电后自己先发一个0x55出去,以后收到数据回一个0xAA void GPIO_Configuration(void) { RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE); RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART5,ENABLE); //TX GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz; GPIO_Init(GPIOC, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin=GPIO_Pin_2; //管脚位置定义 GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING; //浮空输入 IN_FLOATING GPIO_Init(GPIOD,&GPIO_InitStructure); //C组GPIO初始化 } void NVIC_Configuration(void) { NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);//1 也试过了 NVIC_InitStructure.NVIC_IRQChannel = UART5_IRQn; //通道设置为串口1中断 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; //中断响应优先级 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //打开中断 NVIC_Init(&NVIC_InitStructure); //初始化 } void UART5_Init(void) { USART_InitStructure.USART_BaudRate = 9600; //波特率9600 USART_InitStructure.USART_WordLength = USART_WordLength_8b; //字长8位 USART_InitStructure.USART_StopBits = USART_StopBits_1; //1位停止字节 USART_InitStructure.USART_Parity = USART_Parity_No; //无奇偶校验 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; //无流控制 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //打开Rx接收和Tx发送功能 USART_Init(UART5, &USART_InitStructure); //初始化 USART_ClearFlag(UART5, USART_FLAG_RXNE); // 清标志 USART_ITConfig(UART5, USART_IT_RXNE, ENABLE); // 若接收数据寄存器满,则产生中断 // USART_ITConfig(UART5, USART_IT_TXE, ENABLE); USART_Cmd(UART5, ENABLE); //启动串口 } void UART5_IRQHandler(void) { if(USART_GetITStatus(UART5, USART_IT_RXNE) != RESET) { while (!(UART5->SR & USART_FLAG_RXNE)); UART5->DR = (0XAA & (uint16_t)0x01FF); USART_ITConfig(UART5, USART_IT_TXE, DISABLE); } if(USART_GetITStatus(UART5, USART_IT_TXE) != RESET) { while (!(UART5->SR & USART_FLAG_TXE)); UART5->DR = (0X55 & (uint16_t)0x01FF); USART_ITConfig(UART5, USART_IT_TXE, DISABLE); } } main函数就比较简单了 GPIO_Configuration(); NVIC_Configuration(); UART5_Init(); USART_ITConfig(UART5, USART_IT_TXE, ENABLE); while(1); |
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16个回答
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RCC_APB2Periph_AFIO开不开都不行
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中断会不会进来?
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有没有从网上找个现成的代码试试
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你先实现普通模式的串口发送和接收,先别使用中断。
我这有UART4和UART5的 //========== 我是分隔符 ========= #include "stm32f10x.h" /******************************************************************************* * Function Name : USART_Configuration * Description : Configure UART4 * Input : None * Output : None * Return : None * Attention : None *******************************************************************************/ void UART4_Configuration(void) { GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOC ,ENABLE); RCC_APB1PeriphClockCmd( RCC_APB1Periph_UART4 ,ENABLE); /* * UART4_TX -> PC10 , UART4_RX -> PC11 */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOC, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOC, &GPIO_InitStructure); 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(UART4, &USART_InitStructure); USART_ClearFlag(UART4,USART_FLAG_TC); //USART_ITConfig(UART4, USART_IT_RXNE, ENABLE); USART_Cmd(UART4, ENABLE); } /*---------------------------------------------------------------------------- * sendchar: Write a character to Serial Port *---------------------------------------------------------------------------*/ int sendchar (int ch) { if (ch == 'n') { while (!(UART4->SR & 0x0080)); UART4->DR = 0x0D; } while (!(UART4->SR & 0x0080)); UART4->DR = (ch & 0xFF); return (ch); } /*---------------------------------------------------------------------------- * getkey: Read a character from Serial Port *---------------------------------------------------------------------------*/ int getkey (void) { while (!(UART4->SR & 0x0020)); return (UART4->DR); } //========== 我是分隔符 ========= /******************************************************************************* * Function Name : USART_Configuration * Description : Configure UART5 * Input : None * Output : None * Return : None * Attention : None *******************************************************************************/ void UART5_Configuration(void) { GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD ,ENABLE); RCC_APB1PeriphClockCmd( RCC_APB1Periph_UART5 ,ENABLE); /* * UART5_TX -> PC12 , UART5_RX -> PD2 */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOC, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOD, &GPIO_InitStructure); USART_InitStructure.USART_BaudRate = 9600; 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(UART5, &USART_InitStructure); USART_ClearFlag(UART5,USART_FLAG_TC); //USART_ITConfig(UART5, USART_IT_RXNE, ENABLE); USART_Cmd(UART5, ENABLE); } |
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void UART5_IRQHandler(void)
{ if(USART_GetITStatus(UART5, USART_IT_RXNE) != RESET) { while (!(UART5->SR & USART_FLAG_RXNE)); UART5->DR = (0XAA & (uint16_t)0x01FF); USART_ITConfig(UART5, USART_IT_TXE, DISABLE); } if(USART_GetITStatus(UART5, USART_IT_TXE) != RESET) { while (!(UART5->SR & USART_FLAG_TXE)); UART5->DR = (0X55 & (uint16_t)0x01FF); USART_ITConfig(UART5, USART_IT_TXE, DISABLE); } } USART_ITConfig(UART5, USART_IT_TXE, DISABLE); 禁用了中断...而且没有清除接收中断标志吧 |
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回复第 3 楼 于2014-04-14 08:20:26发表:
中断会不会进来? 可以进发送中断,但是UART5->DR(寄存器0x4000 5004)的数据没有 变化 |
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回复第 5 楼 于2014-04-14 09:00:26发表:
你先实现普通模式的串口发送和接收,先别使用中断。 我这有UART4和UART5的 //========== 我是分隔符 ========= #include "stm32f10x.h" /******************************************************************************* * Function Name : USART_Configuration * Description : Configure UART4 * Input : None * Output : None * Return : None * Attention : None *******************************************************************************/ void UART4_Configuration(void) { GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOC ,ENABLE); RCC_APB1PeriphClockCmd( RCC_APB1Periph_UART4 ,ENABLE); /* * UART4_TX -> PC10 , UART4_RX -> PC11 */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOC, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOC, &GPIO_InitStructure); 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(UART4, &USART_InitStructure); USART_ClearFlag(UART4,USART_FLAG_TC); //USART_ITConfig(UART4, USART_IT_RXNE, ENABLE); USART_Cmd(UART4, ENABLE); } /*---------------------------------------------------------------------------- * sendchar: Write a character to Serial Port *---------------------------------------------------------------------------*/ int sendchar (int ch) { if (ch == 'n') { while (!(UART4->SR & 0x0080)); UART4->DR = 0x0D; } while (!(UART4->SR & 0x0080)); UART4->DR = (ch & 0xFF); return (ch); } /*---------------------------------------------------------------------------- * getkey: Read a character from Serial Port *---------------------------------------------------------------------------*/ int getkey (void) { while (!(UART4->SR & 0x0020)); return (UART4->DR); } //========== 我是分隔符 ========= /******************************************************************************* * Function Name : USART_Configuration * Description : Configure UART5 * Input : None * Output : None * Return : None * Attention : None *******************************************************************************/ void UART5_Configuration(void) { GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD ,ENABLE); RCC_APB1PeriphClockCmd( RCC_APB1Periph_UART5 ,ENABLE); /* * UART5_TX -> PC12 , UART5_RX -> PD2 */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOC, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOD, &GPIO_InitStructure); USART_InitStructure.USART_BaudRate = 9600; 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(UART5, &USART_InitStructure); USART_ClearFlag(UART5,USART_FLAG_TC); //USART_ITConfig(UART5, USART_IT_RXNE, ENABLE); USART_Cmd(UART5, ENABLE); } 用你的试了,直接不停发数据,电脑的串口助手 也没有数据啊 |
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还没有调通吗?反正我用F103RC串口1~5是全通的
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换个例程调试看看
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这是我目前使用的,5个口都用到,请参考.
/**************************************** * ÎļþÃû £ºusart.c | PA9 - USART1(Tx) | | PA10 - USART1(Rx) | | PA2 - USART2(Tx) | | PA3 - USART2(Rx) | | PB10 - USART3(Tx) | | PB11 - USART3(Rx) | | PC10 - USART4(Tx) | | PC11 - USART4(Rx) | | PC12 - USART5(Tx) | | PD2 - USART5(Rx) | **********************************************************************************/ #include "usart.h" #include "plc.h" #include #include USART_InitTypeDef USART_InitStructure; void GPIO_Tx_Usart1_Config(GPIOMode_TypeDef GPIOMode) { GPIO_InitTypeDef GPIO_InitStructure; /* Configure USART1 Tx (PA.09) as alternate function push-pull */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIOMode; GPIO_Init(GPIOA, &GPIO_InitStructure); } void GPIO_Tx_Usart2_Config(GPIOMode_TypeDef GPIOMode) { GPIO_InitTypeDef GPIO_InitStructure; /* Configure USART2 Tx (PA.02) as alternate function push-pull */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; GPIO_InitStructure.GPIO_Mode = GPIOMode; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOA, &GPIO_InitStructure); } void GPIO_Tx_Usart3_Config(GPIOMode_TypeDef GPIOMode) { GPIO_InitTypeDef GPIO_InitStructure; /* Configure USART4 Tx (PB.10) as alternate function push-pull */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; GPIO_InitStructure.GPIO_Mode = GPIOMode; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOB, &GPIO_InitStructure); } void GPIO_Tx_Usart4_Config(GPIOMode_TypeDef GPIOMode) { GPIO_InitTypeDef GPIO_InitStructure; /* Configure USART4 Tx (PC.10) as alternate function push-pull */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; GPIO_InitStructure.GPIO_Mode = GPIOMode; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOC, &GPIO_InitStructure); } void GPIO_Tx_Usart5_Config(GPIOMode_TypeDef GPIOMode) { GPIO_InitTypeDef GPIO_InitStructure; /* Configure USART5 Tx (PC.12) as alternate function push-pull */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12; GPIO_InitStructure.GPIO_Mode = GPIOMode; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOC, &GPIO_InitStructure); } void USART_Config(void) { /* USART mode config */ USART_InitStructure.USART_BaudRate = 250000; //ÅäÖÃUSART1µÄ²¨ÌØÂÊ USART_InitStructure.USART_WordLength = USART_WordLength_8b; //USART½ÓÊÕ»òÕß´«Êä8λÊý¾Ý USART_InitStructure.USART_StopBits = USART_StopBits_1; //USART·¢Ë͵ÄֹͣλΪ1λ USART_InitStructure.USART_Parity = USART_Parity_No ; //¶¨ÒåUSARTµÄÆæżУÑéλΪÎÞ USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; //¶¨ÒåUSARTµÄÓ²¼þÁ÷¿ØģʽµÄRTSºÍCTSʹÄÜ USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //ʹÄÜ·¢ËͺͽÓÊÕģʽ } /* * º¯ÊýÃû£ºUART_NVIC_Configuration * ÃèÊö £ºUARTÖжÏÓÅÏȼ¶ÅäÖà */ void Uart_NVIC_Configuration(USART_TypeDef* USARTx) { NVIC_InitTypeDef NVIC_InitStructure; NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0); //ÉèÖÃÓÅÏȼ¶·Ö×é NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //ÇÀÕ¼ÓÅÏȼ¶Îª×î¸ß0 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; //ÏìÓ¦ÓÅÏȼ¶Îª×î¸ß0 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //ͨµÀʹÄÜ switch (*(uint32_t*)&USARTx) { case USART1_BASE: NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn; NVIC_Init(&NVIC_InitStructure); break; case USART2_BASE: NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn; NVIC_Init(&NVIC_InitStructure); break; case USART3_BASE: NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn; NVIC_Init(&NVIC_InitStructure); break; case UART4_BASE: NVIC_InitStructure.NVIC_IRQChannel = UART4_IRQn; NVIC_Init(&NVIC_InitStructure); break; case UART5_BASE: NVIC_InitStructure.NVIC_IRQChannel = UART5_IRQn; NVIC_Init(&NVIC_InitStructure); break; default: break; } } /* * º¯ÊýÃû£ºUSART1_Config * ÃèÊö £ºUSART1 GPIO ÅäÖÃ,¹¤×÷ģʽÅäÖà | PA9 - USART1(Tx) | | PA10 - USART1(Rx) | */ void USART1_Config(void) { GPIO_InitTypeDef GPIO_InitStructure; /* config USART1 clock */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE); /* Configure USART1 Tx (PA.09) as alternate function push-pull */ GPIO_Tx_Usart1_Config(GPIO_Mode_AF_PP); /* 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); USART_Config(); USART_Init(USART1, &USART_InitStructure); USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); USART_Cmd(USART1, ENABLE); Uart_NVIC_Configuration(USART1); } /* * º¯ÊýÃû£ºUSART2_Config * ÃèÊö £ºUSART2 GPIO ÅäÖÃ,¹¤×÷ģʽÅäÖà | PA2 - USART2(Tx) | | PA3 - USART2(Rx) | */ void USART2_Config(void) { GPIO_InitTypeDef GPIO_InitStructure; /* config USART2 clock */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE); /* Configure USART2 Tx (PA.02) as alternate function push-pull */ GPIO_Tx_Usart2_Config(GPIO_Mode_AF_PP); /* Configure USART2 Rx (PA.03) as input floating */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_Init(GPIOA, &GPIO_InitStructure); USART_Config(); USART_Init(USART2, &USART_InitStructure); USART_ITConfig(USART2, USART_IT_RXNE, ENABLE); USART_Cmd(USART2, ENABLE); Uart_NVIC_Configuration(USART2); } /* * º¯ÊýÃû£ºUSART3_Config * ÃèÊö £ºUSART3 GPIO ÅäÖÃ,¹¤×÷ģʽÅäÖà | PB10 - USART3(Tx) | | PB11 - USART3(Rx) | */ void USART3_Config(void) { GPIO_InitTypeDef GPIO_InitStructure; /* config USART3 clock */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE); /* Configure USART2 Tx (PB.10) as alternate function push-pull */ GPIO_Tx_Usart3_Config(GPIO_Mode_AF_PP); /* Configure USART2 Rx (PB.11) as input floating */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_Init(GPIOB, &GPIO_InitStructure); USART_Config(); USART_Init(USART3, &USART_InitStructure); USART_ITConfig(USART3, USART_IT_RXNE, ENABLE); USART_Cmd(USART3, ENABLE); Uart_NVIC_Configuration(USART3); } /* * º¯ÊýÃû£ºUSART4_Config * ÃèÊö £ºUSART4 GPIO ÅäÖÃ,¹¤×÷ģʽÅäÖà | PC10 - USART4(Tx) | | PC11 - USART4(Rx) | */ void USART4_Config(void) { GPIO_InitTypeDef GPIO_InitStructure; /* config USART4 clock */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE); RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART4, ENABLE); /* Configure USART4 Tx (PC.10) as alternate function push-pull */ GPIO_Tx_Usart4_Config(GPIO_Mode_AF_PP); /* Configure USART2 Rx (PC.11) as input floating */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_Init(GPIOC, &GPIO_InitStructure); USART_Config(); USART_Init(UART4, &USART_InitStructure); USART_ITConfig(UART4, USART_IT_RXNE, ENABLE); USART_Cmd(UART4, ENABLE); Uart_NVIC_Configuration(UART4); } /* * º¯ÊýÃû£ºUSART5_Config * ÃèÊö £ºUSART5 GPIO ÅäÖÃ,¹¤×÷ģʽÅäÖà | PC12 - USART5(Tx) | | PD2 - USART5(Rx) | */ void USART5_Config(void) { GPIO_InitTypeDef GPIO_InitStructure; /* config USART3 clock */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE); RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART5, ENABLE); /* Configure USART5 Tx (PC.12) as alternate function push-pull */ GPIO_Tx_Usart5_Config(GPIO_Mode_AF_PP); /* Configure USART5 Rx (PD.02) as input floating */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_Init(GPIOD, &GPIO_InitStructure); USART_Config(); USART_Init(UART5, &USART_InitStructure); USART_ITConfig(UART5, USART_IT_RXNE, ENABLE); USART_Cmd(UART5, ENABLE); Uart_NVIC_Configuration(UART5); } |
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你的不通是什么意思呢?连上仿真器,看看能不能进入中断,是不能进入发送还是不能进入接收。
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1、你发送0x55字符的时候不要使用总断实现,而是采用查询实现。
2、不要在串口接收中断接收字符后禁止接收中断。 3、把中断优先级都设置为0 0 再试一下,网上完善的例程或者官网例程很多,代码可以优化 |
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