#include "sys.h" #include "usart.h" ////////////////////////////////////////////////////////////////////////////////// //如果使用ucos,则包括下面的头文件即可. #if SYSTEM_SUPPORT_OS #include "includes.h" //ucos 使用 #endif ////////////////////////////////////////////////////////////////////////////////// //本程序只供学习使用，未经作者许可，不得用于其它任何用途 //ALIENTEK STM32F4探索者开发板 //串口1初始化 //正点原子@ALIENTEK //技术论坛:www.openedv.com //修改日期:2014/6/10 //版本：V1.5 //版权所有，盗版必究。 //Copyright(C) 广州市星翼电子科技有限公司 2009-2019 //All rights reserved //******************************************************************************** //V1.3修改说明 //支持适应不同频率下的串口波特率设置. //加入了对printf的支持 //增加了串口接收命令功能. //修正了printf第一个字符丢失的bug //V1.4修改说明 //1,修改串口初始化IO的bug //2,修改了USART_RX_STA,使得串口最大接收字节数为2的14次方 //3,增加了USART_REC_LEN,用于定义串口最大允许接收的字节数(不大于2的14次方) //4,修改了EN_USART1_RX的使能方式 //V1.5修改说明 //1,增加了对UCOSII的支持 ////////////////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////// //加入以下代码,支持printf函数,而不需要选择use MicroLIB #if 1 #pragma import(__use_no_semihosting) //标准库需要的支持函数 struct __FILE { int handle; }; FILE __stdout; //定义_sys_exit()以避免使用半主机模式 void _sys_exit(int x) { x = x; } //重定义fputc函数 int fputc(int ch, FILE *f) { while((UART4->SR&0X40)==0);//循环发送,直到发送完毕 UART4->DR = (u8) ch; return ch; } #endif //串口1中断服务程序 //注意,读取USARTx->SR能避免莫名其妙的错误 u8 USART_RX_BUF[USART_REC_LEN]; //接收缓冲,最大USART_REC_LEN个字节. //接收状态 //bit15， 接收完成标志 //bit14， 接收到0x0d //bit13~0， 接收到的有效字节数目 u16 USART_RX_STA=0; //接收状态标记 /* 接收缓冲, 最大USART_REC_LEN个字节. */ uint8_t g_usart1_rx_buf[USART_REC_LEN]; uint16_t g_usart1_rx_sta = 0; uint16_t g_usart1_rx_state = 0; uint16_t g_usart2_rx_state = 0; uint16_t g_usart3_rx_state = 0; uint16_t g_usart4_rx_state = 0; uint16_t g_usart5_rx_state = 0; uint16_t g_usart6_rx_state = 0; uint8_t g_rx1_buffer[RXBUFFERSIZE]; /* HAL库使用的串口接收缓冲 */ /* 接收缓冲, 最大USART_REC_LEN个字节. */ uint8_t g_usart2_rx_buf[USART_REC_LEN]; uint16_t g_usart2_rx_sta = 0; uint8_t g_rx2_buffer[RXBUFFERSIZE]; /* HAL库使用的串口接收缓冲 */ /* 接收缓冲, 最大USART_REC_LEN个字节. */ uint8_t g_usart3_rx_buf[USART_REC_LEN]; uint16_t g_usart3_rx_sta = 0; uint8_t g_rx3_buffer[RXBUFFERSIZE]; /* HAL库使用的串口接收缓冲 */ /* 接收缓冲, 最大USART_REC_LEN个字节. */ uint8_t g_usart4_rx_buf[USART_REC_LEN]; uint16_t g_usart4_rx_sta = 0; uint8_t g_rx4_buffer[RXBUFFERSIZE]; /* HAL库使用的串口接收缓冲 */ /* 接收缓冲, 最大USART_REC_LEN个字节. */ uint8_t g_usart5_rx_buf[USART_REC_LEN]; uint16_t g_usart5_rx_sta = 0; uint8_t g_rx5_buffer[RXBUFFERSIZE]; /* HAL库使用的串口接收缓冲 */ /* 接收缓冲, 最大USART_REC_LEN个字节. */ uint8_t g_usart6_rx_buf[USART_REC_LEN]; uint16_t g_usart6_rx_sta = 0; uint8_t g_rx6_buffer[RXBUFFERSIZE]; /* HAL库使用的串口接收缓冲 */ char receive_buffer1[RXBUFFERSIZE]={0}; char receive_buffer2[RXBUFFERSIZE]={0}; char receive_buffer3[RXBUFFERSIZE]={0}; //初始化IO 串口1 //bound:波特率 void uart1_init(u32 bound){ //GPIO端口设置 GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA,ENABLE); //使能GPIOA时钟 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);//使能USART1时钟 //串口1对应引脚复用映射 GPIO_PinAFConfig(GPIOA,GPIO_PinSource9,GPIO_AF_USART1); //GPIOA9复用为USART1 GPIO_PinAFConfig(GPIOA,GPIO_PinSource10,GPIO_AF_USART1); //GPIOA10复用为USART1 //USART1端口配置 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9 | GPIO_Pin_10; //GPIOA9与GPIOA10 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用功能 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //速度50MHz GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽复用输出 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //上拉 GPIO_Init(GPIOA,&GPIO_InitStructure); //初始化PA9，PA10 //USART1 初始化设置 USART_InitStructure.USART_BaudRate = bound;//波特率设置 USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字长为8位数据格式 USART_InitStructure.USART_StopBits = USART_StopBits_1;//一个停止位 USART_InitStructure.USART_Parity = USART_Parity_No;//无奇偶校验位 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//无硬件数据流控制 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //收发模式 USART_Init(USART1, &USART_InitStructure); //初始化串口1 USART_Cmd(USART1, ENABLE); //使能串口1 //USART_ClearFlag(USART1, USART_FLAG_TC); USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);//开启相关中断 //Usart1 NVIC 配置 NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;//串口1中断通道 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3;//抢占优先级3 NVIC_InitStructure.NVIC_IRQChannelSubPriority =3; //子优先级3 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道使能 NVIC_Init(&NVIC_InitStructure); //根据指定的参数初始化VIC寄存器、 } void USART1_IRQHandler(void) //串口1中断服务程序 { u8 uart1_data; if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET) //接收中断 { USART_ClearITPendingBit(USART1, USART_IT_RXNE); uart1_data =USART_ReceiveData(USART1); //读取接收到的数据 g_rx1_buffer[0] = uart1_data; //Uart6_Send_data(g_rx1_buffer,1); if ( g_usart1_rx_sta == 0 && g_rx1_buffer[0] == 0xBB ) { g_usart1_rx_buf[0] = g_rx1_buffer[0]; g_usart1_rx_sta = 1; } else if( g_usart1_rx_sta != 0 ) { g_usart1_rx_buf[g_usart1_rx_sta & 0X3FFF] = g_rx1_buffer[0]; g_usart1_rx_sta++; if(g_usart1_rx_sta > (USART_REC_LEN - 1)) { g_usart1_rx_sta = 0; g_usart1_rx_state = 1; // memset(g_usart1_rx_buf, 0x0, 6); // g_rx1_buffer[0] = 0x0; } } } else if(USART_GetITStatus(USART1, USART_IT_TXE) != RESET) { USART_ClearITPendingBit(USART1, USART_IT_TXE); } } void uart2_init(u32 bound){ //GPIO端口设置 GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA,ENABLE); //使能GPIOA时钟 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE);//使能USART1时钟 //串口2对应引脚复用映射 GPIO_PinAFConfig(GPIOA,GPIO_PinSource2,GPIO_AF_USART2); //GPIOA2复用为USART2 GPIO_PinAFConfig(GPIOA,GPIO_PinSource3,GPIO_AF_USART2); //GPIOA3复用为USART3 //USART1端口配置 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 | GPIO_Pin_3; //GPIOA9与GPIOA10 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用功能 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //速度50MHz GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽复用输出 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //上拉 GPIO_Init(GPIOA,&GPIO_InitStructure); //初始化PA9，PA10 //USART1 初始化设置 USART_InitStructure.USART_BaudRate = bound;//波特率设置 USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字长为8位数据格式 USART_InitStructure.USART_StopBits = USART_StopBits_1;//一个停止位 USART_InitStructure.USART_Parity = USART_Parity_No;//无奇偶校验位 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//无硬件数据流控制 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //收发模式 USART_Init(USART2, &USART_InitStructure); //初始化串口1 USART_Cmd(USART2, ENABLE); //使能串口1 //USART_ClearFlag(USART1, USART_FLAG_TC); USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);//开启相关中断 //Usart1 NVIC 配置 NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;//串口1中断通道 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3;//抢占优先级3 NVIC_InitStructure.NVIC_IRQChannelSubPriority =3; //子优先级3 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道使能 NVIC_Init(&NVIC_InitStructure); //根据指定的参数初始化VIC寄存器、 } void USART2_IRQHandler(void) //串口1中断服务程序 { u8 uart1_data; if(USART_GetITStatus(USART2, USART_IT_RXNE) != RESET) //接收中断 { USART_ClearITPendingBit(USART2, USART_IT_RXNE); uart1_data =USART_ReceiveData(USART2); //读取接收到的数据 g_rx2_buffer[0] = uart1_data; //USART_ClearITPendingBit(USART1, USART_IT_RXNE); if ( g_usart2_rx_sta == 0 && g_rx2_buffer[0] == 0xBB ) { g_usart2_rx_buf[0] = g_rx2_buffer[0]; g_usart2_rx_sta = 1; } else if( g_usart2_rx_sta != 0 ) { g_usart2_rx_buf[g_usart2_rx_sta & 0X3FFF] = g_rx2_buffer[0]; g_usart2_rx_sta++; if(g_usart2_rx_sta > (USART_REC_LEN - 1)) { g_usart2_rx_sta = 0; g_usart2_rx_state = 1; // memset(g_usart1_rx_buf, 0x0, 6); // g_rx1_buffer[0] = 0x0; } } } else if(USART_GetITStatus(USART2, USART_IT_TXE) != RESET) { USART_ClearITPendingBit(USART2, USART_IT_TXE); } } void uart3_init(u32 bound){ //GPIO端口设置 GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD,ENABLE); //使能GPIOA时钟 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3,ENABLE);//使能USART1时钟 //串口3对应引脚复用映射 GPIO_PinAFConfig(GPIOA,GPIO_PinSource8,GPIO_AF_USART3); //GPIOD8复用为USART1 GPIO_PinAFConfig(GPIOA,GPIO_PinSource9,GPIO_AF_USART3); //GPIOD9复用为USART1 //USART3端口配置 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9; // GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用功能 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //速度50MHz GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽复用输出 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //上拉 GPIO_Init(GPIOD,&GPIO_InitStructure); //初始化PA9，PA10 //USART3 初始化设置 USART_InitStructure.USART_BaudRate = bound;//波特率设置 USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字长为8位数据格式 USART_InitStructure.USART_StopBits = USART_StopBits_1;//一个停止位 USART_InitStructure.USART_Parity = USART_Parity_No;//无奇偶校验位 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//无硬件数据流控制 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //收发模式 USART_Init(USART3, &USART_InitStructure); //初始化串口1 USART_Cmd(USART3, ENABLE); //使能串口1 //USART_ClearFlag(USART1, USART_FLAG_TC); USART_ITConfig(USART3, USART_IT_RXNE, ENABLE);//开启相关中断 //Usart1 NVIC 配置 NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn;//串口1中断通道 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3;//抢占优先级3 NVIC_InitStructure.NVIC_IRQChannelSubPriority =3; //子优先级3 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道使能 NVIC_Init(&NVIC_InitStructure); //根据指定的参数初始化VIC寄存器、 } void USART3_IRQHandler(void) //串口1中断服务程序 { u8 uart1_data; if(USART_GetITStatus(USART3, USART_IT_RXNE) != RESET) //接收中断 { USART_ClearITPendingBit(USART3, USART_IT_RXNE); uart1_data =USART_ReceiveData(USART3); //读取接收到的数据 g_rx3_buffer[0] = uart1_data; if ( g_usart3_rx_sta == 0 && g_rx3_buffer[0] == 0xBB ) { g_usart3_rx_buf[0] = g_rx3_buffer[0]; g_usart3_rx_sta = 1; } else if( g_usart3_rx_sta != 0 ) { g_usart3_rx_buf[g_usart3_rx_sta & 0X3FFF] = g_rx3_buffer[0]; g_usart3_rx_sta++; if(g_usart3_rx_sta > (USART_REC_LEN - 1)) { g_usart3_rx_sta = 0; g_usart3_rx_state = 1; // memset(g_usart1_rx_buf, 0x0, 6); // g_rx1_buffer[0] = 0x0; } } } else if(USART_GetITStatus(USART3, USART_IT_TXE) != RESET) { USART_ClearITPendingBit(USART3, USART_IT_TXE); } } void uart4_init(u32 bound){ //GPIO端口设置 GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA,ENABLE); //使能GPIOA时钟 RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART4,ENABLE);//使能USART1时钟 // RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE); // SYSCFG->PMC |= ((uint32_t)0x00008000); // 开启USART4重映射（PA0/PA1） //串口1对应引脚复用映射 GPIO_PinAFConfig(GPIOA,GPIO_PinSource0,GPIO_AF_UART4); //GPIOA9复用为USART1 GPIO_PinAFConfig(GPIOA,GPIO_PinSource1,GPIO_AF_UART4); //GPIOA10复用为USART1 //USART1端口配置 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1; //GPIOA9与GPIOA10 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用功能 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //速度50MHz GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽复用输出 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //上拉 GPIO_Init(GPIOA,&GPIO_InitStructure); //初始化PA9，PA10 //USART1 初始化设置 USART_InitStructure.USART_BaudRate = bound;//波特率设置 USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字长为8位数据格式 USART_InitStructure.USART_StopBits = USART_StopBits_1;//一个停止位 USART_InitStructure.USART_Parity = USART_Parity_No;//无奇偶校验位 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//无硬件数据流控制 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //收发模式 USART_Init(UART4, &USART_InitStructure); //初始化串口1 USART_Cmd(UART4, ENABLE); //使能串口1 //USART_ClearFlag(USART1, USART_FLAG_TC); USART_ITConfig(UART4, USART_IT_RXNE, ENABLE);//开启相关中断 //Usart1 NVIC 配置 NVIC_InitStructure.NVIC_IRQChannel = UART4_IRQn;//串口1中断通道 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3;//抢占优先级3 NVIC_InitStructure.NVIC_IRQChannelSubPriority =3; //子优先级3 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道使能 NVIC_Init(&NVIC_InitStructure); //根据指定的参数初始化VIC寄存器、 } void UART4_IRQHandler(void) //串口1中断服务程序 { u8 Res; } void uart5_init(u32 bound){ //GPIO端口设置 GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC,ENABLE); //使能GPIOA时钟 RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD,ENABLE); //使能GPIOA时钟 RCC_APB2PeriphClockCmd(RCC_APB1Periph_UART5,ENABLE);//使能USART1时钟 //串口1对应引脚复用映射 GPIO_PinAFConfig(GPIOC,GPIO_PinSource12,GPIO_AF_UART5); //GPIOA9复用为USART1 GPIO_PinAFConfig(GPIOD,GPIO_PinSource2,GPIO_AF_UART5); //GPIOA10复用为USART1 //USART1端口配置 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12 ; //GPIOA9与GPIOA10 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用功能 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //速度50MHz GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽复用输出 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //上拉 GPIO_Init(GPIOC,&GPIO_InitStructure); //初始化PA9，PA10 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 ; //GPIOA9与GPIOA10 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用功能 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //速度50MHz //GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽复用输出 //GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //上拉 GPIO_Init(GPIOD,&GPIO_InitStructure); //初始化PA9，PA10 //USART1 初始化设置 USART_InitStructure.USART_BaudRate = bound;//波特率设置 USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字长为8位数据格式 USART_InitStructure.USART_StopBits = USART_StopBits_1;//一个停止位 USART_InitStructure.USART_Parity = USART_Parity_No;//无奇偶校验位 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//无硬件数据流控制 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //收发模式 USART_Init(UART5, &USART_InitStructure); //初始化串口1 USART_Cmd(UART5, ENABLE); //使能串口1 //USART_ClearFlag(USART1, USART_FLAG_TC); USART_ITConfig(UART5, USART_IT_RXNE, ENABLE);//开启相关中断 //Usart1 NVIC 配置 NVIC_InitStructure.NVIC_IRQChannel = UART5_IRQn;//串口1中断通道 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3;//抢占优先级3 NVIC_InitStructure.NVIC_IRQChannelSubPriority =3; //子优先级3 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道使能 NVIC_Init(&NVIC_InitStructure); //根据指定的参数初始化VIC寄存器、 } void UART5_IRQHandler(void) //串口1中断服务程序 { u8 Res; } void uart6_init(u32 bound){ //GPIO端口设置 GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC,ENABLE); //使能GPIOA时钟 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART6,ENABLE);//使能USART1时钟 //串口1对应引脚复用映射 //GPIO_PinAFConfig(GPIOC,GPIO_PinSource6,GPIO_AF_USART1); //GPIOA9复用为USART1 //GPIO_PinAFConfig(GPIOC,GPIO_PinSource7,GPIO_AF_USART1); //GPIOA10复用为USART1 串口复用设置错误 // 3. 引脚复用映射（将PC6/PC7映射到USART6） GPIO_PinAFConfig(GPIOC, GPIO_PinSource6, GPIO_AF_USART6); // PC6 -> USART6_TX GPIO_PinAFConfig(GPIOC, GPIO_PinSource7, GPIO_AF_USART6); // PC7 -> USART6_RX //USART1端口配置 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7; //GPIOA9与GPIOA10 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用功能 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //速度50MHz GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽复用输出 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //上拉 GPIO_Init(GPIOC,&GPIO_InitStructure); //初始化PA9，PA10 //USART1 初始化设置 USART_InitStructure.USART_BaudRate = bound;//波特率设置 USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字长为8位数据格式 USART_InitStructure.USART_StopBits = USART_StopBits_1;//一个停止位 USART_InitStructure.USART_Parity = USART_Parity_No;//无奇偶校验位 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//无硬件数据流控制 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //收发模式 USART_Init(USART6, &USART_InitStructure); //初始化串口1 USART_Cmd(USART6, ENABLE); //使能串口1 //USART_ClearFlag(USART1, USART_FLAG_TC); USART_ITConfig(USART6, USART_IT_RXNE, ENABLE);//开启相关中断 //Usart1 NVIC 配置 NVIC_InitStructure.NVIC_IRQChannel = USART6_IRQn;//串口1中断通道 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3;//抢占优先级3 NVIC_InitStructure.NVIC_IRQChannelSubPriority =3; //子优先级3 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道使能 NVIC_Init(&NVIC_InitStructure); //根据指定的参数初始化VIC寄存器、 } void USART6_IRQHandler(void) //串口1中断服务程序 { u8 uart1_data; if(USART_GetITStatus(USART6, USART_IT_RXNE) != RESET) //接收中断 { USART_ClearITPendingBit(USART6, USART_IT_RXNE); uart1_data =USART_ReceiveData(USART6); //读取接收到的数据 g_rx6_buffer[0] = uart1_data; //USART_ClearITPendingBit(USART1, USART_IT_RXNE); if ( g_usart2_rx_sta == 0 && g_rx6_buffer[0] == 0xBB ) { g_usart6_rx_buf[0] = g_rx6_buffer[0]; g_usart6_rx_sta = 1; } else if( g_usart6_rx_sta != 0 ) { g_usart6_rx_buf[g_usart6_rx_sta & 0X3FFF] = g_rx6_buffer[0]; g_usart6_rx_sta++; if(g_usart6_rx_sta > (USART_REC_LEN - 1)) { g_usart6_rx_sta = 0; g_usart6_rx_state = 1; // memset(g_usart1_rx_buf, 0x0, 6); // g_rx1_buffer[0] = 0x0; } } } else if(USART_GetITStatus(USART6, USART_IT_TXE) != RESET) { USART_ClearITPendingBit(USART6, USART_IT_TXE); } } //发送数据 void Uart1_Send_data(u8 *databuf,u16 len) { u8 i = 0; for(i=0; i