stm32 水质检测 程序
时间: 2023-09-01 21:07:44 浏览: 59
实现 STM32 水质检测需要以下步骤:
1. 硬件设计:使用 STM32 微控制器和传感器模块,如 pH 传感器和溶解氧传感器,设计电路板和传感器连接。
2. 采集数据:使用 ADC 模块采集传感器模块输出的模拟信号,并将其转换为数字信号进行处理。
3. 实现算法:根据采集到的数据,实现水质检测算法,如 pH 值计算和溶解氧浓度计算。
4. 显示结果:将计算得到的结果显示到 LCD 屏幕上或通过串口输出。
以下是一个简单的 STM32 水质检测程序示例:
```c
#include "stm32f10x.h"
#define ADC1_DR_Address ((uint32_t)0x4001244C)
__IO uint16_t ADC_ConvertedValue[2];
void ADC1_Init(void);
void GPIO_Configuration(void);
void USART_Configuration(void);
void USART_SendString(USART_TypeDef* USARTx, uint8_t* str);
int main(void)
{
GPIO_Configuration();
USART_Configuration();
ADC1_Init();
while (1)
{
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC));
ADC_ConvertedValue[0] = ADC_GetConversionValue(ADC1);
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC));
ADC_ConvertedValue[1] = ADC_GetConversionValue(ADC1);
float pH = (float)ADC_ConvertedValue[0] / 4096 * 14;
float DO = (float)ADC_ConvertedValue[1] / 4096 * 10;
uint8_t buffer[30];
sprintf((char*)buffer, "pH: %.2f, DO: %.2f\r\n", pH, DO);
USART_SendString(USART1, buffer);
delay_ms(1000);
}
}
void ADC1_Init(void)
{
ADC_InitTypeDef ADC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
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 = 2;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
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);
DMA_Cmd(DMA1_Channel1, ENABLE);
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 2;
ADC_Init(ADC1, &ADC_InitStructure);
ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_239Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 2, ADC_SampleTime_239Cycles5);
ADC_DMACmd(ADC1, ENABLE);
ADC_Cmd(ADC1, ENABLE);
ADC_ResetCalibration(ADC1);
while(ADC_GetResetCalibrationStatus(ADC1));
ADC_StartCalibration(ADC1);
while(ADC_GetCalibrationStatus(ADC1));
}
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
}
void USART_Configuration(void)
{
USART_InitTypeDef USART_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = 115200;
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_Cmd(USART1, ENABLE);
}
void USART_SendString(USART_TypeDef* USARTx, uint8_t* str)
{
while(*str)
{
USART_SendData(USARTx, *str++);
while(USART_GetFlagStatus(USARTx, USART_FLAG_TXE) == RESET);
}
}
void delay_ms(unsigned int ms)
{
unsigned int i, j;
for(i = 0; i < ms; i++)
for(j = 0; j < 0x500; j++);
}
```
该程序使用了 ADC 模块采集 pH 值和溶解氧浓度,通过串口输出结果。注意在程序中要进行适当的延时,以保证串口输出正确。
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