/// <summary>
/// 定时器Elapsed事件注册的委托所持有的方法
/// 每当定时时间到，会异步执行该方法，需要加锁
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void TimerSend_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
lock (lock_TimerSend_Elapsed) //加锁，同一时间，只有唯一线程执行此代码，其余线程等待访问
{
if (!this.TimerSend.Enabled)
{
return;
}
if (CanDevice.VCI_Transmit(this.currentDeviceInfo.m_devtype, this.currentDeviceInfo.m_devind, this.currentDeviceInfo.m_canind, ref this.TransmitCanFrame, 1) == 0)
{
///如果数据帧传输失败：
//设置定时器的使能
this.TimerSend.Enabled = false;
//设置btnSend的状态
_form1.SetBtnSendEnableInvoke(true);
//设置发送状态为false
this.TransmitFlag = false;
MessageBox.Show("数据发送错误，实际发送帧数为0", "错误", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
else
{
///如果数据帧传输成功：
//1.获取传输时间
this.TransmitTime = DateTime.Now.ToString("hh:mm:ss:fff");
//2.如果为固定次数发送时，每传输成功1次，发送次数-1
if (this.SendCount != -1 && --this.SendCount == 0)
{
//设置定时器的使能
this.TimerSend.Enabled = false;
//设置btnSend的状态
_form1.SetBtnSendEnableInvoke(true);
//设置发送状态为false
this.TransmitFlag = false;
}
else if (SendCount == -1) //2.如果为无限循环发送，FrameCount == -1
{
}
}
///执行至此时，有一帧数据传输成功了，传输数据数+1，存储这帧数据
this.TransmitNum++;
this._dataRecoder_FT.AddRows(this.TransmitCanFrame, this.TransmitTime, "发送");
}
}
/// <summary>
/// 窗体关闭前事件的注册函数
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
if (frameTransmiter.TransmitFlag)
{
MessageBox.Show("关闭前请先停止发送数据", "错误", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
e.Cancel = true;
}
else
{
this.frameReceiver.TimerReceive.Enabled = false;
CanDevice.VCI_ResetCAN(currentDevice.m_devtype, currentDevice.m_devind, currentDevice.m_canind);
CanDevice.VCI_CloseDevice(currentDevice.m_devtype, currentDevice.m_devind);
this.Dispose();
Application.Exit();
}
}
private void btnStartCan_Click(object sender, EventArgs e)
{
if (currentDevice.m_bOpen == 0)
{
return;
}
if (CanDevice.VCI_StartCAN(currentDevice.m_devtype, currentDevice.m_devind, currentDevice.m_canind) == 0)
{
MessageBox.Show("启动can失败", "错误", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
else
{
btnStartCan.Enabled = false;
btnReset.Enabled = true;
//使能循环显示定时器
timerDisplay.Enabled = true;
//使能接收定时器
this.frameReceiver.TimerReceive.Enabled = true;
}
}
private void btnReset_Click(object sender, EventArgs e)
{
if (currentDevice.m_bOpen == 0)
{
return;
}
if (frameTransmiter.TransmitFlag)
{
//有数据在发送，弹窗提示，返回
MessageBox.Show("请先停止数据发送", "错误", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
//使能接收定时器为false
this.frameReceiver.TimerReceive.Enabled = false;
CanDevice.VCI_ResetCAN(currentDevice.m_devtype, currentDevice.m_devind, currentDevice.m_canind);
btnStartCan.Enabled = true;
btnReset.Enabled = false;
//使能循环显示定时器false
timerDisplay.Enabled = false;
}
/// <summary>
/// 接收定时器的elapsed事件注册的方法
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void TimerReceive_Elapsed(object sender, ElapsedEventArgs e)
{
//获取指定接收缓冲区接收到但尚未被读取的帧数
this.ReceiveNum = CanDevice.VCI_GetReceiveNum(this.currentDeviceInfo.m_devtype, this.currentDeviceInfo.m_devind, this.currentDeviceInfo.m_canind);
if (this.ReceiveNum == 0)
{
return;
}
//调用函数，从设备读取数据，读取出的数据从pt内存指针开始存
this.ReceiveNum = CanDevice.VCI_Receive(this.currentDeviceInfo.m_devtype, this.currentDeviceInfo.m_devind, this.currentDeviceInfo.m_canind, pt, con_maxlen, 100);
this.ReceiveTime = DateTime.Now.ToString("hh:mm:ss:fff");
//遍历存储信息帧结构体的内存
for (int i = 0; i < this.ReceiveNum; i++)
{
this.ReceiveFrame = (VCI_CAN_OBJ)Marshal.PtrToStructure((IntPtr)((UInt32)pt + i * Marshal.SizeOf(typeof(VCI_CAN_OBJ))), typeof(VCI_CAN_OBJ));
//存储这帧数据
this._dataRecoder_REC.AddRows(this.ReceiveFrame, this.ReceiveTime, "接收");
}
//释放以前从进程的非托管内存中分配的内存。
//Marshal.FreeHGlobal(pt);
}
/// <summary>
/// 连接设备按钮点击事件的注册函数
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnConnect_Click(object sender, EventArgs e)
{
if (currentDevice.m_bOpen == 1)
{
///如果设备打开标志为1，即设备打开则执行关闭设备
//1.先判断是否处于数据发送中
if (frameTransmiter.TransmitFlag)
{
//有数据在发送，弹窗提示，返回
MessageBox.Show("请先停止数据发送", "错误", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
//2.没有数据在发送，则执行关闭设备
if (CanDevice.VCI_CloseDevice(currentDevice.m_devtype, currentDevice.m_devind) == 1)
{
//设备关闭成功，将设备打开标志位置0
currentDevice.m_bOpen = 0;
//使能接收定时器为false
this.frameReceiver.TimerReceive.Enabled = false;
//复位can
CanDevice.VCI_ResetCAN(currentDevice.m_devtype, currentDevice.m_devtype, currentDevice.m_devind);
//传输数据次数清空
frameTransmiter.TransmitNum = 0;
//发送次数清空
frameTransmiter.SendCount = 0;
//接收数据数清空
dataRecoder.DataNum = 0;
//设置按钮状态
btnStartCan.Enabled = true;
btnReset.Enabled = false;
//清空dataRecorder中的数据存储区datatable和datatablewatch和listid
dataRecoder.dataTable.Clear();
dataRecoder.dataTableWatch.Clear();
dataRecoder.listId.Clear();
//使能循环显示定时器为false
timerDisplay.Enabled = false;
//清空dataGridview1
dataGridView1.Rows.Clear();
}
else
{
//设备关闭失败，弹窗
MessageBox.Show("设备关闭失败", "错误", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
}
else
{
//如果设备打开标志为0，即设备关闭则打开设备
//1.设置当前设备参数
currentDevice.m_devtype = currentDevice.m_arrdevtype[cboDeviceType.SelectedIndex];
currentDevice.m_devind = (UInt32)cboDevIndex.SelectedIndex;
currentDevice.m_canind = (UInt32)cboCanIndex.SelectedIndex;
//2.调用设备打开函数，打开设备
if (CanDevice.VCI_OpenDevice(currentDevice.m_devtype, currentDevice.m_devind, 0) == 0)
{
//设备打开失败，弹窗提示
MessageBox.Show("打开设备失败,请检查设备类型和设备索引号是否正确", "错误",
MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
try
{
//3.实例化currentDevice中的结构体成员config
currentDevice.m_devConfig = new VCI_INIT_CONFIG();
//4.将验收码文本框中的文本以16进制数字字符串的形式转换为32位无符号整数，再赋值给初始化can配置结构体的对应成员
currentDevice.m_devConfig.AccCode = Convert.ToUInt32(txtAccCode.Text.Trim(), 16);
//5.将屏蔽码文本框中的文本。。。
currentDevice.m_devConfig.AccMask = Convert.ToUInt32(txtAccMask.Text.Trim(), 16);
//6.将定时器0的文本框中的文本以16进制数字字符串形式转换成8位无符号整数，再赋值给初始化can配置结构体的成员
currentDevice.m_devConfig.Timing0 = Convert.ToByte(txtTime0.Text.Trim(), 16);
//7.将定时器1
currentDevice.m_devConfig.Timing1 = Convert.ToByte(txtTime1.Text.Trim(), 16);
}
catch
{
MessageBox.Show("can参数设置错误", "错误", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
//8.将模式下拉框选择项的索引号强制转换为字节数据，赋值给初始化can配置结构体的成员
currentDevice.m_devConfig.Mode = (byte)cboMode.SelectedIndex;
//9.将滤波方式下拉框。。。
currentDevice.m_devConfig.Filter = (byte)cboFilter.SelectedIndex;
//12.调用初始化can配置函数,初始化当前连接的设备
if (CanDevice.VCI_InitCAN(currentDevice.m_devtype, currentDevice.m_devind, currentDevice.m_devind, ref currentDevice.m_devConfig) == 0)
{
MessageBox.Show("初始化can配置错误", "错误", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
//13.设备打开成功，将设备打开标志位置1
currentDevice.m_bOpen = 1;
}
//通过设备打开标志，设置按钮文本
btnConnect.Text = currentDevice.m_bOpen == 1 ? "关闭设备" : "连接设备";
}