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- #include "stm32f10x.h"
- void Delay(unsigned int x);//延时
- void GPIO_Configuration(void);//IO口配置
- void UART_Init(void); //串口初始化
- void UART2_PutChar(u8 ch); //串口发送数据
- void ADC_Configuration(void); //ADC配置
- void Read_ADC_Result(void); //ADC读取结果
- int main(void)
- {
- SystemInit();
- unsigned int t;
- GPIO_Configuration();
- UART_Init();
- ADC_Configuration();
- while(1)
- {Read_ADC_Result();
- for(t=0;t<100;t++)
- {Delay(65530);}
- }
- }
- void GPIO_Configuration(void)
- {
- GPIO_InitTypeDefGPIO_InitStructure;
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE);
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
- //GPIO_PinRemapConfig(GPIO_PartialRemap_USART3,ENABLE);
- GPIO_InitStructure.GPIO_Pin =GPIO_Pin_2;
- GPIO_InitStructure.GPIO_Mode =GPIO_Mode_AF_PP;
- GPIO_InitStructure.GPIO_Speed= GPIO_Speed_50MHz;
- GPIO_Init(GPIOA,&GPIO_InitStructure);
-
- GPIO_InitStructure.GPIO_Pin =GPIO_Pin_3;
- GPIO_InitStructure.GPIO_Mode =GPIO_Mode_IN_FLOATING;
- GPIO_InitStructure.GPIO_Speed= GPIO_Speed_50MHz;
- GPIO_Init(GPIOA,&GPIO_InitStructure);
- }
- void UART_Init(void)
- {
-
-
- USART_InitTypeDefUSART_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(USART2,&USART_InitStructure);
- // USART_ITConfig(USART2,USART_IT_RXNE, ENABLE);
- // USART_ITConfig(USART2,USART_IT_TXE, ENABLE);
- USART_Cmd(USART2,ENABLE);
- }
- void UART2_PutChar(u8 ch)
- {
- USART_SendData(USART2,ch);
- while(USART_GetFlagStatus(USART2,USART_FLAG_TXE)== RESET);
- }
- void ADC_Configuration(void)
- {
- GPIO_InitTypeDef GPIO_InitStructure; //定义结构体
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC |RCC_APB2Periph_ADC1,ENABLE);//IO口使能设置
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0; //ADC输入管脚PC0
- GPIO_InitStructure.GPIO_Mode =GPIO_Mode_AIN;//模拟输出
- GPIO_InitStructure.GPIO_Speed =GPIO_Speed_50MHz;
- GPIO_Init(GPIOC, &GPIO_InitStructure);
-
-
- ADC_InitTypeDef ADC_InitStructure;
- ADC_DeInit(ADC1);
- ADC_InitStructure.ADC_Mode =ADC_Mode_Independent;//工作在独立模式
- ADC_InitStructure.ADC_ScanConvMode =DISABLE;//工作在单通道模式
- ADC_InitStructure.ADC_ContinuousConvMode =ENABLE;//单次模式
- ADC_InitStructure.ADC_ExternalTrigConv =ADC_ExternalTrigConv_None;//转换由软件而不是外部触发启动
- ADC_InitStructure.ADC_DataAlign =ADC_DataAlign_Right;//数据右对齐
- ADC_InitStructure.ADC_NbrOfChannel =1;//通道数目
- ADC_Init(ADC1,&ADC_InitStructure);
- ADC_RegularChannelConfig(ADC1,ADC_Channel_10,1,ADC_SampleTime_239Cycles5);//使用ADC1的通道10,采样顺序为1,采样周期为239.5周期
- ADC_Cmd(ADC1,ENABLE);//使能ADC1
- ADC_ResetCalibration(ADC1);//重置校准ADC1寄存器
- while(ADC_GetResetCalibrationStatus(ADC1));//获取ADC重置校准寄存器的状态
- ADC_StartCalibration(ADC1);//开始ADC1的校准状态
- while(ADC_GetCalibrationStatus(ADC1));//等待校准完成
- ADC_SoftwareStartConvCmd(ADC1,ENABLE);//使能ADC1的软件转换启动功能
-
- }
- void Read_ADC_Result()
- {
- unsigned chari,a,b,c,d;
- unsigned short result; float vol_f;
-
- for(i=0;i<8;i++)
- {
- ADC_SoftwareStartConvCmd(ADC1,ENABLE);//启动转换
- while(!ADC_GetFlagStatus(ADC1,ADC_FLAG_EOC));//等待转换结束
- result += ADC_GetConversionValue(ADC1);
- }
-
-
- result = result >>3;
- result = (unsignedint)(((unsigned long)result)*3300>>12);//转换为数字电压值
- a = result/1000;
- b =(result-a*1000)/100;
- c =(result-a*1000-b*100)/10;
- d =(result-a*1000-b*100-c*10);
- vol_f = (float)result/1000; //浮点形式显示电压值
- printf("%d", a);
- printf("%d",b);
- printf("%d",c);
- printf("%d",d);
- printf("\r\n");
- printf("电压=");
- printf("%f",vol_f);
- printf("\r\n");
- }
- void Delay(unsigned int x)
- {
- unsigned int t;
- t=x;
- while(t--);
- }
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