STM32f103驱动TDS传感器
时间: 2023-11-21 13:58:04 浏览: 571
TDS传感器模块资料及源码
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根据提供的引用内容,我们可以知道本系统由STM32单片机核心板、超声波测距模块、PH值传感器模块、电导率传感器、LCD1602液晶及电源组成。其中,电导率传感器可以用于测量TDS(总溶解固体)值。因此,我们可以通过电导率传感器来测量TDS值。
下面是STM32f103驱动TDS传感器的步骤:
1.连接电导率传感器到STM32单片机核心板上的ADC引脚。
2.根据电导率传感器的手册,确定电导率传感器的输出电压范围和转换公式。
3.在STM32f103单片机上编写程序,通过ADC采集电导率传感器的输出电压,并将其转换为TDS值。
4.将TDS值显示在LCD1602液晶上。
下面是一个简单的示例代码,用于演示如何在STM32f103单片机上驱动TDS传感器:
```c
#include "stm32f10x.h"
#include "stdio.h"
#define ADC1_DR_Address ((u32)0x4001244C)
void ADC1_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
ADC_InitTypeDef ADC_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_ADC1, ENABLE);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
DMA_DeInit(DMA1_Channel1);
DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (u32)&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);
DMA_Cmd(DMA1_Channel1, ENABLE);
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);
ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_55Cycles5);
ADC_DMACmd(ADC1, ENABLE);
ADC_Cmd(ADC1, ENABLE);
ADC_ResetCalibration(ADC1);
while (ADC_GetResetCalibrationStatus(ADC1))
;
ADC_StartCalibration(ADC1);
while (ADC_GetCalibrationStatus(ADC1))
;
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
}
int main(void)
{
float voltage, tds;
char str[16];
ADC1_Init();
while (1)
{
voltage = ADC_ConvertedValue * (3.3 / 4096);
tds = voltage * 1000;
sprintf(str, "TDS: %.2f mg/L", tds);
LCD_ShowString(0, 0, (u8 *)str);
delay_ms(1000);
}
}
```
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