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STM32 ADC轉換規則組轉換 （單通道 中斷方式）
0.png (52.29 KB, 下載次數: 78)
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2017-5-8 20:47 上傳
STM32單片機源碼：
- //通過串口實時打印出模擬量通道PC0采集的電壓數值。
- //PC0--CH10
- //電位器順時針電壓變小
- #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)
- {
- RCC_Configuration(); //系統時鐘初始化
- GPIO_Configuration();//端口初始化
- USART_Configuration();
- NVIC_Configuration();
- ADC_Configuration();
-
- while(1)
- {
- printf("U=%f\r\n",3.3/4095*ad);//實際電壓值 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);
-
- NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
- NVIC_InitStructure.NVIC_IRQChannel = ADC1_2_IRQn;//ADC1和ADC2 中斷向量
- NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; //1
- NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //0
- 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_DeInit(ADC1);
- ADC_Cmd(ADC1,ENABLE);//使能指定的ADC
- ADC_StructInit(&ADC_InitStructure);
-
- ADC_InitStructure.ADC_Mode=ADC_Mode_Independent; //ADC1 ADC2工作在獨立模式
- ADC_InitStructure.ADC_ScanConvMode=DISABLE; //工作在單通道模式
- ADC_InitStructure.ADC_ContinuousConvMode=DISABLE; //模數轉換工作在單次模式
- ADC_InitStructure.ADC_ExternalTrigConv=ADC_ExternalTrigConv_None;//轉換由軟件而不是外部觸發啟動
- ADC_InitStructure.ADC_DataAlign=ADC_DataAlign_Right; //ADC數據右對齊
- ADC_InitStructure.ADC_NbrOfChannel=1; //順序進行轉換的通道數
- ADC_Init(ADC1,&ADC_InitStructure);
- ADC_ResetCalibration(ADC1); //重置校準器
- while(ADC_GetResetCalibrationStatus(ADC1));//獲取校準狀態
- ADC_StartCalibration(ADC1);//開始指定ADC的校準狀態
- while(ADC_GetCalibrationStatus(ADC1)); //獲取指定ADC的校準程序
-
- ADC_RegularChannelConfig(ADC1,ADC_Channel_10,1,ADC_SampleTime_7Cycles5);//選擇ADC1通道，
-
- …………限于本文篇幅 余下代碼請從51黑下載附件…………
2 規則組轉換 （單通道 中斷方式）.7z
(188.1 KB, 下載次數: 85)
2021-9-29 03:22 上傳
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