1.問題提出
1.1、如何編寫溫溼度傳感器實驗程序
1.2、如何編寫串口通信代碼
1.3、如何利用c#的Serialport去獲取串口傳輸的數據並完成上層應用界面設計
2.功能要求
2.1、設置溫度報警值爲26度，達到報警值時，紅色閃亮，當低於報警值時，停止閃亮，同時，按下按鈕，也可以解除報警；
2.2、將溫溼度採集通過串口發送到電腦，上層用串口小助手查看，或者用VC等編程語言讀取串口數據。
3.實驗準備
3.1、IAR 安裝
3.2、USB 轉串口驅動安裝
3.3、ZigBee 仿真器驅動安裝
3.4、USBmini數據線、物聯網基礎實驗箱、下載器
4.實驗結果
4.1總體設計
4.2實驗結果
描述：當溫度高於26攝氏度時，Led閃爍警示，按下按鍵之後，報警解除，Led熄滅
4.3功能模塊代碼實現
void inttail(void)
{
P1DIR |=0x03;
PLED=0;
}
static void delay( uint32 d )
{
uint32 i,j;
for( i = 0; i < d; i ++ )
{
j = 1000;
while( j-- );
}
}void Init_IO_AND_LED(void)
{
P0INP &= ~0X0c; //配置P0口上拉下拉情況
P1INP &= ~0X40; //配置P1口上拉下拉情況
P0IEN |= 0X40; //P06爲中斷模式
PICTL |= 0X02; //下降沿
EA = 1;
IEN1 |= 0X20; // P0IE = 1;開啓P0口中斷
P0IFG |= 0x00;
};void initUARTtest(void)
{
CLKCONCMD &= ~0x40; //晶振
while(!(SLEEPSTA & 0x40)); //等待晶振穩定
CLKCONCMD &= ~0x47; //TICHSPD128分頻，CLKSPD不分頻
SLEEPCMD |= 0x04; //關閉不用的RC振盪器
PERCFG = 0x00; //位置1 P0口
P0SEL = 0x3c; //P0用作串口
P2DIR &= ~0XC0; //P0優先作爲串口0
U0CSR |= 0x80; //UART方式
U0GCR |= 10; //baud_e
U0BAUD |= 216; //波特率設爲57600
UTX0IF = 0;
}
</pre><pre name="code" class="cpp">/****************************************************************
*函數功能 ：串口發送字符串函數
****************************************************************/
void UartTX_Send_String(char *Data,int len)
{
int j;
for(j=0;j<len;j++)
{
U0DBUF = *Data++;
while(UTX0IF == 0);
UTX0IF = 0;
}
}void main(void)
{
uint16 sht;
float sht11;
intClock();
P2DIR |= 0x01; //打開電源
P2 |= 0x01;
initUARTtest();
SHT1X_INT();
ugOled9616int(); //初始化OLed配置
inttail();
Init_IO_AND_LED();
delay(10);
while(1)
{
char tempBuf[5];
sht = Read_SHT1X(3);
sht&=0x3fff;
sht11 = (float)(sht*0.01) - 39.60;
sprintf( (void *)tempBuf,"%f",sht11);
LcdPutString16_8(0,0,(uint8*)tempBuf,5,1);
delay(10);
if(m==0)
{
if(sht11>=29)
{
PLED=!PLED;
}
else PLED=1;
}
if(sht11<29)
m=0;
char humBuf[6];
sht = Read_SHT1X(5);
sht&=0x0fff;
sht11 = (float)(sht*0.0405) - 4 - (sht * sht * 0.000028);
sprintf( (void *)humBuf,"%f",sht11);
humBuf[5] = 37;//%
LcdPutString16_8(48,0,(uint8*)humBuf,6,1);
delay(10);
UartTX_Send_String(tempBuf,5);
delay(10); //延時
delay(10);
UartTX_Send_String(humBuf,6); //串口發送數據 //串口發送數據
delay(10); //延時
delay(10);
delay(10);
}
}#pragma vector = P1INT_VECTOR
__interrupt void P1_ISR(void)
{
if(P0IFG>0) //按鍵中斷
{
P0IFG = 0;
PLED = 1;
m=1;
delay(10);
}
P0IF = 0; //清中斷標誌
}
基於c#的應用界面簡單設計
代碼實現
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO.Ports;
using System.Text;
using System.Threading;
using System.Windows.Forms;
using Microsoft.Win32;
namespace CommAssist
{
public partial class Form1 : Form
{
SerialPort Comm = new SerialPort("COM3", 57600, Parity.None, 8, StopBits.One); //初始化串口設置
public delegate void Displaydelegate(byte[] InputBuf);
Byte[] OutputBuf = new Byte[128];
public Displaydelegate disp_delegate;
public Form1()
{
disp_delegate = new Displaydelegate(DispUI);
InitializeComponent();
comboBox1.SelectedItem = "COM3";
Comm.DataReceived += new SerialDataReceivedEventHandler(Comm_DataReceived);
try
{
Comm.Open();
}
catch
{
MessageBox.Show("你選擇的串口被佔用或不存在，請重新選擇");
OpenSerialPort.Text = "打開串口";
textBox1.Text = " ";
textBox2.Text = " ";
}
}
/**
*顯示溫度，溼度的值
**/
public void DispUI(byte[] InputBuf)
{
//textBox1.Text = Convert.ToString(InputBuf);
ASCIIEncoding encoding = new ASCIIEncoding();
if (encoding.GetString(InputBuf).Contains("%"))
{
textBox1.Text = encoding.GetString(InputBuf);
}
else
{
textBox2.Text = encoding.GetString(InputBuf);
}
}
/**
*獲取緩衝區數據
**/
void Comm_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
Byte[] InputBuf = new Byte[128];
try
{
Comm.Read(InputBuf,0,Comm.BytesToRead); //讀取緩衝區的數據直到“}”即0x7D爲結束符
//InputBuf = UnicodeEncoding.Default.GetBytes(strRD); //將得到的數據轉換成byte的格式
System.Threading.Thread.Sleep(50);
this.Invoke(disp_delegate, InputBuf);
}
catch (TimeoutException ex) //超時處理
{
MessageBox.Show(ex.ToString());
}
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e) //選擇串口的處理過程
{
bool b_OpenFlag = Comm.IsOpen;
if (b_OpenFlag == true)
{
Comm.Close();
Comm.PortName = comboBox1.SelectedItem.ToString();
if (!Comm.IsOpen)
{
Comm.Close();
try
{
Comm.Open();
}
catch
{
MessageBox.Show("你選擇的串口被佔用或不存在，請重新選擇");
OpenSerialPort.Text = "打開串口";
textBox1.Text = " ";
textBox2.Text = " ";
}
}
}
else
{
Comm.PortName = comboBox1.SelectedItem.ToString();
}
}
private void OpenSerialPort_Click(object sender, EventArgs e) //點擊“打開串口”按鈕的操作
{
if (OpenSerialPort.Text == "關閉串口")
{
Comm.Close();
OpenSerialPort.Text = "打開串口";
}
else
{
OpenSerialPort.Text = "關閉串口";
try
{
Comm.Open();
}
catch
{
MessageBox.Show("你選擇的串口被佔用或不存在，請重新選擇");
OpenSerialPort.Text = "打開串口";
textBox1.Text = " ";
textBox2.Text = " ";
}
}
}
}
}以上代碼下載地址：