| 发表于：2007-01-15 21:06:08 楼主 |
using system;
using system.collections.generic;
using system.componentmodel;
using system.data;
using system.drawing;
using system.text;
using system.windows.forms;
using system.collections;
using system.threading;
using system.io.ports;
using system.io;
namespace serialport
{
public partial class form1 : form
{
public form1（)
{
initializecomponent（);
}
/*==================================================================================================
* 初始化定义
*=================================================================================*/
private float[] m_vol = new float[5];//全局数组
private byte[] lpbuffer = new byte[10];//接收数据的buff
private uint[] m_v = new uint[10];
private float start_f = 0;
private float end_f = 0;
private float step_f = 0;
private float cur_f = 0;
private system.windows.forms.timer work_timer = new system.windows.forms.timer（);
private byte[] receivedata = new byte[10];
private arraylist datalist = new arraylist（);
private streamwriter sw;
private struct impedata
{
public float m_freq;
public float m_g;
public float m_b;
public float m_r;
public float m_x;
public float m_z;
public float m_y;
public float m_phi;
public float m_logz;
public int m_ds;
}
private int m_ds2y_select=0;
private int ds2y_adjust_flag = 0;
/*==================================================================================================
*
*=============================================================================================== */
private void harddeviceiniti（)
{
if （serialport1.isopen == false)
{
serialport1.open（);
}
serialport1.write（ "1111o ");
serialport1.write（ "4111k ");
}//硬件初始化
private void sendfrequnce（)
{
double lf = （double)（cur_f) * 859 / 4;
ulong m_dwfre = （ulong)lf;
byte[] fre = new byte[5];
fre[4] = convert.tobyte（ 'h ');
fre[3] = convert.tobyte（m_dwfre & 0xff);
m_dwfre > > = 8;
fre[2] = convert.tobyte（m_dwfre & 0xff);
m_dwfre > > = 8;
fre[1] = convert.tobyte（m_dwfre & 0xff);
m_dwfre > > = 8;
fre[0] = convert.tobyte（m_dwfre & 0xff);
serialport1.write（fre, 0, 5);
}//发送频率字
private void form1_load（object sender, eventargs e)//程序初始化
{
selectlau.text = "简体中文 ";
selectcoord.text = "lgz phi-f ";
line_checkbox.checked = true;
label20.visible = true;
advancedtextbox.visible = true;
advancedcombox.visible = false;
work_timer.interval = 70;//70毫秒
work_timer.enabled = false;
work_timer.tick += new eventhandler（work_timer_tick);
}
private void work_timer_tick（object sender, eventargs e)
{
work_timer.enabled = false;
sendfrequnce（);
work_timer.enabled = true;
}
private void start_click（object sender, eventargs e)//启动
{
harddeviceiniti（);
start_f = 1000 * convert.tosingle（startfrequency.text);
end_f = 1000 * convert.tosingle（endfrequency.text);
step_f = convert.tosingle（advancedtextbox.text);
cur_f = start_f;
work_timer.enabled = true;
}
private void doupdate（object s, eventargs e)
{
cur_r.text = m_vol[0].tostring（);
cur_x.text = m_vol[1].tostring（);
cur_g.text = m_vol[2].tostring（);
cur_b.text = m_vol[3].tostring（);
cur_phase.text = m_vol[4].tostring（);
}
private void serialport1_datareceived（object sender, system.io.ports.serialdatareceivedeventargs e)
{
try
{
serialport1.read（lpbuffer, 0, 10);
m_v[0] = convert.touint32（（lpbuffer[0] < < 4) + （lpbuffer[1] & 0x0f));
m_v[1] = convert.touint32（（lpbuffer[2] < < 4) + （lpbuffer[3] & 0x0f));
m_v[2] = convert.touint32（（lpbuffer[4] < < 4) + （lpbuffer[5] & 0x0f));
m_v[3] = convert.touint32（（lpbuffer[6] < < 4) + （lpbuffer[7] & 0x0f));
m_v[4] = convert.touint32（（lpbuffer[8] < < 4) + （lpbuffer[9] & 0x0f));
m_vol[0] = convert.tosingle（（float)（m_v[0]) * 5 / 4095);
m_vol[1] = convert.tosingle（（float)（m_v[1]) * 5 / 4095);
m_vol[2] = convert.tosingle（（float)（m_v[2]) * 5 / 4095);
m_vol[3] = convert.tosingle（（float)（m_v[3]) * 5 / 4095);
m_vol[4] = convert.tosingle（（float)（m_v[4]) * 5 / 4095);
this.begininvoke（new eventhandler（doupdate));
}
catch（exception ce)
{
messagebox.show（ce.tostring（));
return;
}
}
}
}
现在的问题是：只有 cur_r， cur_x， cur_g有数据，另外两个没有数据显示。但是，当我移动鼠标的时候，就会有数据显示出来，如果用messagebox来显示m_vol[3]，m_vol[4]的话，显示出来的数值是正确的。这个问题困扰了我好久，各位大虾，帮帮忙，看看到底是什么原因。 |
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