做erp總是免不了與各種硬件設備做對接,本人做畜牧行業erp。領導給分配了一個需求,就是開發托利多t800電子秤接口與erp對接!
生豬出籠稱重,數據對接erp增加至數據庫!
當然接口類工作都是非常簡單的,無論是軟件接口微信接口,支付寶接口等等還是硬件接口如溫濕度接口,電子秤接口!
但是硬件設備公司都是很流氓的,不想軟件公司,接口都會有api開發文檔,參數詳細。有的好友demo;當然此次開發電子秤接口也是如此,
公司只給了一份電子秤使用說明書!別說demo了,說起來都是淚呀!開始在網上尋找api開發文檔,當然第一步肯定是現在,托利多官網尋找開發文檔,不出所料
也是三無,沒有開發文檔,沒有api接口說明書,沒有demo。去網上找吧,最終找到了電子秤demo也就是講解SerialPort類監控com串口!經過一番搗鼓,是能接口數據了可是數據類型,怎么確定哪,測試數據怎么傳哪?還是網上找吧!不說廢話了經過一番尋找好在都找到了!
開始正式講解電子秤開發接口
1,安裝 virtual-serial-port-kit用來帶卡com串口(可以從文章地府附件內下載,也可以網上搜索)
2,下載ComDebug.exe用於發送測試數據 (可以從文章地府附件內下載,也可以網上搜索)
3,測試數據 (可以從文章地府附件內下載,也可以網上搜索)
4,開發軟件監控com串口接收數據 (可以從文章地府附件內下載demo)
5,根據需求處理接收到的數據
6,可以與我交流吆QQ:809451989
demo代碼如下
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO.Ports;
using System.Threading;
using Microsoft.Win32;
namespace TEXTCOM
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private SerialPort Sp = new SerialPort();
public delegate void HandleInterfaceUpdataDelegate(string text); //委托,此為重點
private HandleInterfaceUpdataDelegate interfaceUpdataHandle;
private bool qiii = false;
public void Sp_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
{
string strTemp = "";
double iSecond = 0.5;
DateTime dtOld = System.DateTime.Now;
DateTime dtNow = System.DateTime.Now;
TimeSpan dtInter;
dtInter = dtNow - dtOld;
int i = Sp.BytesToRead;
if (i > 0)
{
try
{
strTemp = Sp.ReadExisting();
}
catch
{ }
if (strTemp.ToLower().IndexOf("\r") < 0)
{
i = 0;
}
else
{
this.Invoke(interfaceUpdataHandle, strTemp);
}
}
while (dtInter.TotalSeconds < iSecond && i <= 0)
{
dtNow = System.DateTime.Now;
dtInter = dtNow - dtOld;
i = Sp.BytesToRead;
if (i > 0)
{
try
{
strTemp += Sp.ReadExisting();
}
catch
{ }
if (strTemp.ToLower().IndexOf("\r") < 0)
{
i = 0;
}
else
{
this.Invoke(interfaceUpdataHandle, strTemp);
}
}
}
// do null
}
private void UpdateTextBox(string text)
{
textBox2.Text = text;
}
/// <summary>
/// 執行AT指令並返回 成功失敗
/// </summary>
/// <param name="ATCmd">AT指令</param>
/// <param name="StCmd">AT指令標准結束標識</param>
/// <returns></returns>
private void ATCommand3(string ATCmd, string StCmd)
{
string response = "";
response = ATCommand(ATCmd, StCmd);
}
/// <summary>
/// 執行AT指令並返回結果字符
/// </summary>
/// <param name="ATCmd">AT指令</param>
/// <param name="StCmd">AT指令標准結束標識</param>
/// <returns></returns>
private string ATCommand(string ATCmd, string StCmd)
{
string response = "";
int i;
if (!ATCmd.EndsWith("\x01a"))
{
if (!(ATCmd.EndsWith("\r") || ATCmd.EndsWith("\r\n")))
{
ATCmd = ATCmd + "\r";
}
}
Sp.WriteLine(ATCmd);
//第一次讀響應數據
if (Sp.BytesToRead > 0)
{
response = Sp.ReadExisting();
//去除前端多可能多讀取的字符
if (response.IndexOf(ATCmd) > 0)
{
response = response.Substring(response.IndexOf(ATCmd));
}
else
{
}
if (response == "" || response.IndexOf(StCmd) < 0)
{
if (response != "")
{
if (response.Trim() == "ERROR")
{
//throw vError = new UnknowException("Unknown exception in sending command:" + ATCmd);
}
if (response.IndexOf("+CMS ERROR") >= 0)
{
string[] cols = new string[100];
cols = response.Split(';');
if (cols.Length > 1)
{
string errorCode = cols[1];
}
}
}
}
}
//讀第一次沒有讀完的響應數據,直到讀到特征數據或超時
for (i = 0; i < 3; i++)
{
Thread.Sleep(1000);
response = response + Sp.ReadExisting();
if (response.IndexOf(StCmd) >= 0)
{
break;
}
}
return response;
}
/// <summary>
/// 從注冊表獲取系統串口列表
/// </summary>
private void GetComList()
{
RegistryKey keyCom = Registry.LocalMachine.OpenSubKey("Hardware\\DeviceMap\\SerialComm");
if (keyCom != null)
{
string[] sSubKeys = keyCom.GetValueNames();
this.comboBox1.Items.Clear();
foreach (string sName in sSubKeys)
{
string sValue = (string)keyCom.GetValue(sName);
this.comboBox2.Items.Add(sValue);
}
}
}
private void cmID_DropDown(object sender, EventArgs e)
{
GetComList();
}
private void Form1_Load_1(object sender, EventArgs e)
{
GetComList();
btPause.Enabled = false;
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
Sp.Close();
}
private void btPause_Click_1(object sender, EventArgs e)
{
Sp.Close();
btENT.Enabled = true;
btPause.Enabled = false;
}
private void btEnt_Click_1(object sender, EventArgs e)
{
if ((this.comboBox2.Text.Trim() != "") && (this.comboBox1.Text != ""))
{
interfaceUpdataHandle = new HandleInterfaceUpdataDelegate(UpdateTextBox);//實例化委托對象
Sp.PortName = this.comboBox2.Text.Trim();
Sp.BaudRate = Convert.ToInt32(this.comboBox1.Text.Trim());
Sp.Parity = Parity.None;
Sp.StopBits = StopBits.One;
Sp.DataReceived += new SerialDataReceivedEventHandler(Sp_DataReceived);
Sp.ReceivedBytesThreshold = 1;
try
{
Sp.Open();
ATCommand3("AT+CLIP=1\r", "OK");
btPause.Enabled = true;
btENT.Enabled = false;
}
catch
{
MessageBox.Show("端口" + this.comboBox2.Text.Trim() + "打開失敗!");
}
}
else
{
MessageBox.Show("請輸入正確的端口號和波特率!");
this.comboBox2.Focus();
}
}
}
}
軟件開發之后怎么使用哪?
1,打開Virtual Serial Port Kit
2,增加com串口
3,打開ComDebug.exe並設置剛才添加的串口com 填入發送的數據 點擊打開端口
4,打開開發的軟件
5,點擊comdebug.exe 的發送
6,如果沒錯的話我們開發的demo就應該收到comdebug.exe發送的數據了
文章引用:http://www.qishunwang.net/knowledge_show_151.aspx