- #ifndef _DEBUGUSART_H_
- #define _DEBUGUSART_H_
- #include <STM32f10x.h>
- #include
- #define USE_USART 3
- #if(USE_USART==1)
- #define DEBUG_USART USART1
- #define DEBUGRX_PORT GPIOA
- #define DEBUGRX_PIN GPIO_Pin_10//RX
- #define DEBUGTX_PORT GPIOA
- #define DEBUGTX_PIN GPIO_Pin_9//TX
- #define DEBUG_USART_IRQn USART1_IRQn
- #define DEBUG_RCC_APBnPeriphClockCmd() RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);
- #endif
- #if (USE_USART==3)
- #define DEBUG_USART USART3
- #define DEBUGRX_PORT GPIOD
- #define DEBUGRX_PIN GPIO_Pin_9//RX
- #define DEBUGTX_PORT GPIOD
- #define DEBUGTX_PIN GPIO_Pin_8//TX
- #define DEBUG_USART_IRQn USART3_IRQn
- #define DEBUG_RCC_APBnPeriphClockCmd() RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3,ENABLE);
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);
- GPIO_PinRemapConfig(GPIO_FullRemap_USART3,ENABLE);
- #endif
- void UARTGPIO_config(void);//串口IO口配置
- void USART_config(u32 baudrate);//串口初始化
- void UARTNVIC_config(void);//配置中断
- int fputc(int ch, FILE *f);//发送数据
- int fgetc(FILE *f); // 接收数据
- int USART_Scanf_Name(char * str);
- void DEBUGUSART(u32 baudrate);
- #endif
- ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
- /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
- #include"DEBUG_USART.H"
- void DEBUGUSART(u32 baudrate)
- {
- USART_config(baudrate); //串口初始化19200
- UARTGPIO_config(); //串口IO口配置
- }
- void UARTGPIO_config(void)//串口IO口配置
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- //GPIO_Structinit(&GPIO_InitStructure);//用默认值初始化结构体为所有端口2M浮空输入
- GPIO_InitStructure.GPIO_Pin = DEBUGTX_PIN;//PA9作为US1的TX端,负责发送数据
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;//复用推挽输出模式
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;//2M
- GPIO_Init(DEBUGTX_PORT,&GPIO_InitStructure);//用以上值初始化PA9口
- GPIO_InitStructure.GPIO_Pin = DEBUGRX_PIN;//PA10作为US1的RX端,负责接收数据
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//浮空输入模式
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;//2M
- GPIO_Init(DEBUGRX_PORT, &GPIO_InitStructure);//用以上值初始化PA10口
- }
- void USART_config(u32 baudrate)//串口初始化
- {
- USART_InitTypeDef USART_InitStructure;
- DEBUG_RCC_APBnPeriphClockCmd();
- USART_StructInit(&USART_InitStructure);//将结构体设置为缺省状态,9600bps,8数据位,1停止位,不校验,硬件流控制失能
- USART_InitStructure.USART_BaudRate =baudrate;//波特率设置为19200
- USART_InitStructure.USART_WordLength = USART_WordLength_8b;//一帧数据的宽度设置为8bits
- USART_InitStructure.USART_StopBits = USART_StopBits_1;//在帧结尾传输1个停止位
- USART_InitStructure.USART_Parity = USART_Parity_No;//奇偶失能模式,无奇偶校验
- USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//发送/接收使能
- USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//硬件流控制失能
- USART_Init(DEBUG_USART, &USART_InitStructure);//设置串口1
- //USART_ITConfig(DEBUG_USART, USART_IT_RXNE, ENABLE);//打开串口1的接收中断响应函数
- USART_Cmd(DEBUG_USART, ENABLE);//打开串口1
- }
- void UARTNVIC_config()//配置中断
- {
- NVIC_InitTypeDef NVIC_InitStructure;
- //NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);//选择中断分组1
- NVIC_InitStructure.NVIC_IRQChannel = DEBUG_USART_IRQn;//选择串口1中断
- NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;//抢占式中断优先级设置为0
- NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;//响应式中断优先级设置为3
- NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//使能中断
- NVIC_Init(&NVIC_InitStructure);
- }
- /*
- void DEBUG_USART_IRQHandler(void)//中断方式的USART接收
- {
- if (USART_GetITStatus(DEBUG_USART, USART_IT_RXNE) != RESET) //判断发生接收中断
- {//USART_ClearITPendingBit(DEBUG_USART, USART_IT_RXNE); //清除中断标志,读接收到的数据时自动清除
- USART_SendData(DEBUG_USART, USART_ReceiveData(DEBUG_USART));//将数据回送至电脑
- while(USART_GetFlagStatus(DEBUG_USART, USART_FLAG_TC) == RESET);//等待数据发送完毕
- }
- }*/
- /*
- if (USART_GetFlagStatus(DEBUG_USART, USART_FLAG_RXNE) != RESET) //判断接收标志;查询方式的USART接收
- {
- USART_ReceiveData(DEBUG_USART);
- }
- USART_SendData(DEBUG_USART, i);//将数据回送至电脑
- while(USART_GetFlagStatus(DEBUG_USART, USART_FLAG_TC) == RESET);//等待数据发送完毕
- */
- int fputc(int ch, FILE *f)//发送数据
- {
- USART_SendData(DEBUG_USART, (unsigned char) ch);//
- while (!(DEBUG_USART->SR & USART_FLAG_TXE));
- return (ch);
- }
- int fgetc(FILE *f) // 接收数据
- {
- while (!(DEBUG_USART->SR & USART_FLAG_RXNE));
- return ((int)(DEBUG_USART->DR & 0x1FF));
- }
- //如果要使用printf函数除了#include和重定义两个输入输出函数外还应该Target->Code Generation中勾选Use MicroLIB
- //char ch='E',str[10]={"FGHIJKLM"};
- //int intd=12345;
- //printf("The is a example!n");
- //printf("%cn%sn%dn%cn%sn%dn%dn",'A',"BCD",0x23,ch,str,ch,intd);
- //The is a example!
- //A
- //BCD
- //35
- //E
- //FGHIJKLM
- //69
- //12345
- /*******************************************************************************
- * Function Name : USART_Scanf_Name
- * Description : Gets Char values from the hyperterminal.
- * Input : None
- * Output : None
- * Return : Length
- *******************************************************************************/
- int USART_Scanf_Name(char * str)
- {
- u16 index = 0;
- USART_ClearFlag(DEBUG_USART,USART_FLAG_RXNE);//清一下接收标志位
- while(1)
- {
- /* Loop until RXNE = 1 */
- while(USART_GetFlagStatus(DEBUG_USART, USART_FLAG_RXNE) == RESET){}//等待直到有数据的到来
- str[index++] = (USART_ReceiveData(DEBUG_USART));
- printf("%c",str[index - 1]);//返回输入的内容
- if(str[index - 1] == 0x0d)//回车键r
- {
- index--;//去掉回车符并以\0结尾
- str[index] ='\0';//结束符号
- return index;
- }
- }
- }
|
0
|
|
|
|