|
|
STM32 規(guī)則組轉(zhuǎn)換 ADC轉(zhuǎn)換單通道查詢方式 源代碼
stm32單片機(jī)源程序：
- //通過(guò)串口實(shí)時(shí)打印出模擬量通道PC0采集的電壓數(shù)值。
- //PC0--CH10
- //電位器順時(shí)針電壓變小
- /*ADC單次模式，采集單通道，50次取平均值，查詢方式*/
- #include "pbdata.h"
- void RCC_Configuration(void);
- void GPIO_Configuration(void);
- void NVIC_Configuration(void);
- void USART_Configuration(void);
- void ADC_Configuration(void);
- int fputc(int ch,FILE *f)
- {
- USART_SendData(USART1,(u8)ch);
- while(USART_GetFlagStatus(USART1,USART_FLAG_TXE)==RESET);
- return ch;
- }
- int main(void)
- {
- u32 ad=0;
- u8 i;
-
- RCC_Configuration(); //系統(tǒng)時(shí)鐘初始化
- GPIO_Configuration();//端口初始化
- USART_Configuration();
- NVIC_Configuration();
- ADC_Configuration();
-
- while(1)
- {
- ad=0;
- for(i=0;i<50;i++)
- {
- ADC_SoftwareStartConvCmd(ADC1,ENABLE); //啟動(dòng)轉(zhuǎn)換 ADON=1;
- while(ADC_GetFlagStatus(ADC1,ADC_FLAG_EOC)==RESET);
- ADC_ClearFlag(ADC1, ADC_FLAG_EOC);
-
- ad=ad+ADC_GetConversionValue(ADC1);
- }
-
- ad=ad/50;
- printf("U=%f\r\n",3.3/4095*ad);//實(shí)際電壓值 12位精度
- delay_ms(1000);
- }
- }
- void RCC_Configuration(void)
- {
- SystemInit();//72m
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC,ENABLE);
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1,ENABLE);
- RCC_ADCCLKConfig(RCC_PCLK2_Div6);//12M 最大14M
- }
- void GPIO_Configuration(void)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- GPIO_InitStructure.GPIO_Pin=GPIO_Pin_9;//TX
- GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
- GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;
- GPIO_Init(GPIOA,&GPIO_InitStructure);
- GPIO_InitStructure.GPIO_Pin=GPIO_Pin_10;//RX
- GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;
- GPIO_Init(GPIOA,&GPIO_InitStructure);
- GPIO_InitStructure.GPIO_Pin=GPIO_Pin_0;//ADin
- GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AIN; //模擬輸入
- GPIO_Init(GPIOC,&GPIO_InitStructure);
- }
- void NVIC_Configuration(void)
- {
- NVIC_InitTypeDef NVIC_InitStructure;
- NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
- NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
- NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
- NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
- NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
- NVIC_Init(&NVIC_InitStructure);
- }
- void USART_Configuration(void)
- {
- USART_InitTypeDef USART_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(USART1,&USART_InitStructure);
- USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);
- USART_Cmd(USART1,ENABLE);
- USART_ClearFlag(USART1,USART_FLAG_TC);
- }
- void ADC_Configuration(void)
- {
- ADC_InitTypeDef ADC_InitStructure;
- ADC_InitStructure.ADC_Mode=ADC_Mode_Independent; //ADC1 ADC2工作在獨(dú)立模式
- ADC_InitStructure.ADC_ScanConvMode=DISABLE; //工作在單通道模式
- ADC_InitStructure.ADC_ContinuousConvMode=DISABLE; //模數(shù)轉(zhuǎn)換工作在單次模式
- ADC_InitStructure.ADC_ExternalTrigConv=ADC_ExternalTrigConv_None;//轉(zhuǎn)換由軟件而不是外部觸發(fā)啟動(dòng)
- ADC_InitStructure.ADC_DataAlign=ADC_DataAlign_Right; //ADC數(shù)據(jù)右對(duì)齊
- ADC_InitStructure.ADC_NbrOfChannel=1; //順序進(jìn)行轉(zhuǎn)換的通道數(shù)
- ADC_Init(ADC1,&ADC_InitStructure);
- ADC_RegularChannelConfig(ADC1,ADC_Channel_10,1,ADC_SampleTime_7Cycles5);//選擇ADC1通道，
- ADC_Cmd(ADC1,ENABLE);//使能指定的ADC
- ADC_ResetCalibration(ADC1); //重置校準(zhǔn)器
- while(ADC_GetResetCalibrationStatus(ADC1));//獲取校準(zhǔn)狀態(tài)
- ADC_StartCalibration(ADC1);//開(kāi)始指定ADC的校準(zhǔn)狀態(tài)
- while(ADC_GetCalibrationStatus(ADC1));//獲取指定ADC的校準(zhǔn)程序
-
- …………限于本文篇幅 余下代碼請(qǐng)從51黑下載附件…………
完整代碼下載：
1 規(guī)則組轉(zhuǎn)換 ( 單通道 查詢方式).7z
(189.26 KB, 下載次數(shù): 27)
2021-9-29 03:21 上傳
點(diǎn)擊文件名下載附件
|
|
