生成一段用于STM32F030芯片ADC采集正弦波信号显示频率及幅度
时间: 2023-12-24 10:06:19 浏览: 82
以下是一段用于STM32F030芯片ADC采集正弦波信号显示频率及幅度的代码:
```c
#include "stm32f0xx.h"
#include "stm32f0xx_adc.h"
#include "stm32f0xx_gpio.h"
#include "stm32f0xx_rcc.h"
#include "stm32f0xx_tim.h"
#define ADC1_DR_ADDRESS ((uint32_t)0x40012440)
void GPIO_Configuration(void);
void ADC_Configuration(void);
void TIM_Configuration(void);
uint16_t ADCValue = 0;
uint16_t TIM2Value = 0;
float frequency = 0;
float amplitude = 0;
int main(void)
{
GPIO_Configuration();
ADC_Configuration();
TIM_Configuration();
while (1)
{
ADC_SoftwareStartConv(ADC1); // 开始一次ADC转换
while (!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC)); // 等待转换完成
ADCValue = ADC_GetConversionValue(ADC1); // 获取转换结果
TIM2Value = TIM_GetCapture2(TIM2); // 获取定时器2的CCR2寄存器值
frequency = 72000000.0 / (TIM2Value * 4.0); // 计算频率
amplitude = ADCValue * 3.3 / 4096.0; // 计算幅度
delay_ms(100); // 延迟100ms
}
}
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOA, &GPIO_InitStructure);
}
void ADC_Configuration(void)
{
ADC_InitTypeDef ADC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ScanDirection = ADC_ScanDirection_Upward;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = 1;
ADC_Init(ADC1, &ADC_InitStructure);
ADC_ChannelConfig(ADC1, ADC_Channel_0, ADC_SampleTime_28_5Cycles);
ADC_Cmd(ADC1, ENABLE);
while (!ADC_GetFlagStatus(ADC1, ADC_FLAG_ADEN));
}
void TIM_Configuration(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
TIM_TimeBaseStructure.TIM_Period = 17999;
TIM_TimeBaseStructure.TIM_Prescaler = 0;
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 9000;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC2Init(TIM2, &TIM_OCInitStructure);
TIM_Cmd(TIM2, ENABLE);
}
```
这段代码使用了ADC1和TIM2模块,通过ADC采集正弦波信号的幅度值,通过TIM2测量正弦波信号的周期,从而计算出信号的频率和幅度。其中,ADC1使用了PA0通道,TIM2使用了PA1通道。通过PWM输出,可以产生正弦波信号。
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