STM32采集土壤湿度,湿度高开启水泵的代码
时间: 2023-07-03 11:25:57 浏览: 287
好的,以下是基于STM32采集土壤湿度,并在湿度高的情况下开启水泵的代码:
```c
#include "stm32f10x.h"
#define ADC1_DR_Address ((uint32_t)0x4001244C) // ADC1 Data Register address
void ADC1_Init(void);
u16 Get_ADC1_Value(u8 ch);
void GPIO_Configuration(void);
void TIM_Configuration(void);
int main()
{
ADC1_Init(); // ADC1初始化
GPIO_Configuration(); // GPIO初始化
TIM_Configuration(); // 定时器初始化
while(1)
{
u16 adc_value = Get_ADC1_Value(0); // 获取ADC1通道0的值
if(adc_value > 2000) // 如果湿度高于2000
{
GPIO_SetBits(GPIOB, GPIO_Pin_0); // 开启水泵
}
else
{
GPIO_ResetBits(GPIOB, GPIO_Pin_0); // 关闭水泵
}
}
}
void ADC1_Init(void)
{
ADC_InitTypeDef ADC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
RCC_ADCCLKConfig(RCC_PCLK2_Div6); // 设置ADC时钟
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE); // 使能DMA时钟
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOA, ENABLE); // 使能ADC1和GPIOA时钟
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure); // 初始化GPIO
DMA_DeInit(DMA1_Channel1); // 复位DMA1通道1
DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&ADC_ConvertedValue;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = 1;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel1, &DMA_InitStructure); // 初始化DMA1通道1
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 1;
ADC_Init(ADC1, &ADC_InitStructure); // 初始化ADC1
ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_55Cycles5); // 配置ADC1通道0
ADC_DMACmd(ADC1, ENABLE); // 使能ADC1 DMA
DMA_Cmd(DMA1_Channel1, ENABLE); // 使能DMA1通道1
ADC_Cmd(ADC1, ENABLE); // 使能ADC1
ADC_ResetCalibration(ADC1); // 复位校准
while(ADC_GetResetCalibrationStatus(ADC1)); // 等待校准复位完成
ADC_StartCalibration(ADC1); // 开始校准
while(ADC_GetCalibrationStatus(ADC1)); // 等待校准完成
}
u16 Get_ADC1_Value(u8 ch)
{
ADC_RegularChannelConfig(ADC1, ch, 1, ADC_SampleTime_55Cycles5); // 配置ADC1通道
ADC_SoftwareStartConvCmd(ADC1, ENABLE); // 开始转换
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC)); // 等待转换完成
return ADC_GetConversionValue(ADC1); // 返回转换结果
}
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); // 使能GPIOB时钟
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure); // 初始化GPIOB
}
void TIM_Configuration(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); // 使能TIM2时钟
TIM_TimeBaseStructure.TIM_Period = 999; // 计数周期为1000
TIM_TimeBaseStructure.TIM_Prescaler = 72-1; // 分频系数为72
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); // 初始化TIM2
TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE); // 开启TIM2溢出中断
NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure); // 初始化NVIC
TIM_Cmd(TIM2, ENABLE); // 开启TIM2
}
void TIM2_IRQHandler(void)
{
if(TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET)
{
TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
ADC_SoftwareStartConvCmd(ADC1, ENABLE); // 开始ADC1转换
}
}
```
以上代码实现了采集ADC1通道0的值,并在湿度高于2000时开启水泵。定时器TIM2用来定时触发ADC1转换,每秒钟触发一次转换。可以根据实际需求修改定时器的计数周期和分频系数,以及湿度判断的阈值。
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