Symbol MT2070扫描仪接收来自PC的数据
本文关键字：PC 数据 MT2070 扫描仪 Symbol | 更新日期: 2023-09-27 18:25:54
我有一台MT2070扫描仪，它需要与PC应用程序通信（发送和接收）。我已经使用Symbol.MT2000.ScannerServices程序集中的ScannerServicesClient.SendLabel从扫描仪发送到PC。
然而，我没有成功地接收到从电脑发送的用于扫描仪的数据。我在Symbol.MT2000程序集中没有找到任何类似于处理此问题的内容，也没有找到任何接收数据的示例。
如果有人能给我举个例子，或者知道我如何做到这一点，我将不胜感激。
private readonly SerialPort _port = new SerialPort()
private void SetupPort()
{
_port.PortName = "COM1";
_port.BaudRate = 9600;
_port.DataBits = 8;
_port.Parity = Parity.None;
_port.StopBits = StopBits.One;
try
{
_port.Open();
_port.DataReceived += PortDataReceived;
_port.ErrorReceived += PortErrorReceived;
}
catch (Exception Ex)
{
OnCommsMessage("Exception opening port: " + Ex.Message);
}
}
private void PortDataReceived(object sender, SerialDataReceivedEventArgs e)
{
OnCommsMessage("PortDataReceived");
}
private void PortErrorReceived(object sender, SerialErrorReceivedEventArgs e)
{
OnCommsMessage("PortErrorReceived");
}
DataReceived似乎从未被引发。使用SerialPort.GetPortNames（）可获得COM1、COM2、COM4、COM5、COM9、$device''COM21和$device''COM 23。我已经尝试将端口设置为除最后两个之外的所有端口（不确定我是否应该为这些端口添加一些设备名称）
更新
工作溶液
internal class MT2000CradleCommunicator : BaseCradleCommunicator
{
private readonly ScannerServicesClient _scannerServicesClient = new ScannerServicesClient();
public override void Start()
{
if (_scannerServicesClient.Connect(true))
{
OnCommsMessage("ScannerServicesClient Connected");
SetRawMode();
}
else OnCommsMessage("ScannerServicesClient Failed to connect");
}
public override void Send(string message)
{
RESULTCODE result = _scannerServicesClient.SendRawData(MessageToRawData(message), 1000);
if (result == RESULTCODE.E_OK)
{
Receive();
}
else OnCommsMessage("Error sending data: " + result);
}
private void SetRawMode()
{
const int ATTRIBUTE_NUM_WIRED_HOST_NUM = 383;
const byte API_HOST_RAW = 18;
ScannerHostParameters hostParameters = new ScannerHostParameters(_scannerServicesClient);
RawParameters rawHostParameters;
RESULTCODE result = hostParameters.GetRawParameters(out rawHostParameters);
if (result == RESULTCODE.E_OK)
{
rawHostParameters.Type = RawParameters.RawHostType.RS232;
rawHostParameters.BaudRate = RawParameters.RawBaudRates.RAWSERIAL_9600;
result = hostParameters.StoreRawParameters(rawHostParameters);
if (result != RESULTCODE.E_OK)
OnCommsMessage("Set Parameters failed: " + result);
}
else OnCommsMessage("GetParams failed: " + result);
byte wHostNum;
result = _scannerServicesClient.GetAttributeByte(ATTRIBUTE_NUM_WIRED_HOST_NUM, out wHostNum);
if (result == RESULTCODE.E_OK)
{
OnCommsMessage("Get host: " + wHostNum);
result = _scannerServicesClient.SetAttributeByte(ATTRIBUTE_NUM_WIRED_HOST_NUM, API_HOST_RAW);
if (result != RESULTCODE.E_OK)
OnCommsMessage("Set host failed: " + result);
}
else OnCommsMessage("Get host failed: " + result);
}
private static RawData MessageToRawData(string message)
{
byte[] bytes = Encoding.ASCII.GetBytes(message);
return new RawData(bytes, bytes.Length, 1);
}
private void Receive()
{
RawData rawData;
RESULTCODE result = _scannerServicesClient.ReadRawData(out rawData, 5000);
if (result == RESULTCODE.E_OK)
{
OnCradleMessageReceived(BytesToAsciiString(rawData.Data));
}
else
{
OnCommsMessage("Comms timeout: Failed to receive data");
}
}
private static string BytesToAsciiString(byte[] data)
{
return Encoding.ASCII.GetString(data, 0, data.Length);
}
}
不确定您是否还需要MT2070问题的答案——有一种叫做ReadRawData的方法可以从计算机中读取。
此外，它需要处于原始模式，使用类似于的东西
myScannerSvcClient.SetAttributeByte(
(ushort)ATTRIBUTE_NUMBER.ATT_MIA_HOSTNUM,
(byte)ENUM_HOSTS.HOST_RAW
);
此外，如果你使用蓝牙SPP，这将不起作用。需要通过支架（如果您有）或直接连接到USB电缆。
在inthehand.com#2252中有一个很好的通用示例。
此外，在堆栈溢出问题1528379中也有一个很好的例子。他说，他放弃了内置的COM端口，并使用串行端口连接来建立连接。这似乎也是我过去做过的路线，而且它也没有将您与Symbol的专有DLL联系起来。
编辑：
我不知道这是否有帮助，但这是我几年前写的一段旧代码。
你必须清理它，这样它才能为你的应用程序工作。我的应用程序有一个TextBox控件，它从中读取并将错误记录到全局类中。改变这一点，用你现有的东西工作，基本上应该是好的。
static class Scanner {
const string _CODEFILE = "Scanner.cs - Scanner::";
static int _baud = 9600;
static int _bits = 8;
static string _dataIn = null;
static string _port = "COM1";
static Parity _parity = Parity.None;
static StopBits _stop = StopBits.One;
static SerialPort _com1 = null;
static TextBox _textbox = null;
public enum ControlType { None, BadgeID, PartNumber, SerialNumber, WorkOrder };
static ControlType _control;
public static bool Available { get { return ((_com1 != null) && (_com1.IsOpen)); } }
public static bool Close {
get {
if (_com1 == null) return true;
try {
if (_com1.IsOpen) {
_com1.Close();
}
return (!_com1.IsOpen);
} catch { }
return false;
}
}
public static string Open() {
const string na = "Not Available";
if (_com1 == null) {
string reset = Reset();
if (!String.IsNullOrEmpty(reset)) return reset;
}
try {
_com1.Open();
return (_com1.IsOpen) ? null : na;
} catch (Exception err) {
return err.Message;
}
}
static void ProcessData(string incoming) {
_dataIn += incoming;
if ((_control != ControlType.None) && (_textbox != null)) {
bool ok = false;
string testData = _dataIn.Trim();
switch (_control) {
case ControlType.BadgeID:
if (testData.Length == 6) {
if (testData != BarCode.LOGOFF) {
Regex pattern = new Regex(@"[0-9]{6}");
ok = (pattern.Matches(testData).Count == 1);
} else {
ok = true;
}
}
break;
case ControlType.PartNumber:
if (testData.Length == 7) {
Regex pattern = new Regex(@"[BCX][P057][0-9]{5}");
ok = (pattern.Matches(testData).Count == 1);
}
break;
case ControlType.SerialNumber:
if (testData.Length == 15) {
Regex pattern = new Regex(@"[BCX][P057][0-9]{5} [0-9]{4} [0-9]{2}");
ok = (pattern.Matches(testData).Count == 1);
}
break;
case ControlType.WorkOrder:
if (testData.Length == 6) {
Regex pattern = new Regex(@"[0-9]{6}");
ok = (pattern.Matches(testData).Count == 1);
}
break;
}
if (ok) {
_textbox.Text = testData;
_textbox.ScrollToCaret();
_dataIn = null;
}
}
}
static string Reset() {
if (_com1 != null) {
try {
if (_com1.IsOpen) {
_com1.DiscardInBuffer();
_com1.Close();
}
} catch (Exception err) {
return err.Message;
}
Global.Dispose(_com1);
_com1 = null;
}
try {
_com1 = new SerialPort(_port, _baud, _parity, _bits, _stop);
_com1.DataReceived += new SerialDataReceivedEventHandler(Serial_DataReceived);
_com1.Open();
} catch (Exception err) {
return err.Message;
}
return null;
}
public static void ScanSource(ref TextBox objTextBox, ControlType objType) {
_textbox = objTextBox;
_control = objType;
_dataIn = null;
}
static void Serial_DataReceived(object sender, SerialDataReceivedEventArgs e) {
ProcessData(_com1.ReadExisting());
}
public static void Settings(string ComPort, int BaudRate, Parity ParityValue, int Bits, StopBits StopBit) {
_port = ComPort;
_baud = BaudRate;
_parity = ParityValue;
_bits = Bits;
_stop = StopBit;
}
/// <summary>
/// Closes the COM Port
/// COM Port routines are ready to add as soon as I am
/// </summary>
static bool ComPortClose {
get {
if (_com1 == null) ComPortReset();
return ((_com1 == null) ? true : _com1.IsOpen ? false : true);
}
set {
if (_com1 == null) ComPortReset();
else if (_com1.IsOpen) {
_com1.DiscardInBuffer();
_com1.Close();
}
}
}
/// <summary>
/// Opens the COM Port
/// </summary>
static bool ComPortOpen {
get {
if (_com1 == null) ComPortReset();
return (_com1 == null) ? false : _com1.IsOpen;
}
set {
if (_com1 == null) ComPortReset();
if ((_com1 != null) && (!_com1.IsOpen)) _com1.Open();
}
}
/// <summary>
/// Initialized the Serial Port on COM1
/// </summary>
static void ComPortReset() {
if ((_com1 != null) && (_com1.IsOpen)) {
_com1.Close();
_com1 = null;
}
try {
_com1 = new SerialPort("COM1", 9600, Parity.None, 8, StopBits.One);
} catch (IOException err) {
Global.LogError(_CODEFILE + "ComPortReset", err);
}
}
}