473,582 Members | 3,046 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

Help sending hex data through SerialPort

Hello,

I'm developing an application in VB.NET 2005 that communicates with a device
through RS232,
and need to send the following sequence of hexadecimal data to the device:

0xFF, 0x01, 0xC3, 0xE3, 0xFF, 0xFF.
That's the configuration:

SerialPort.Port Name = "COM1"
SerialPort.Baud Rate = 9600
SerialPort.Stop Bits = IO.Ports.StopBi ts.One
SerialPort.Data Bits = 8
SerialPort.Pari ty = IO.Ports.Parity .None

If SerialPort.IsOp en = False Then
SerialPort.Open ()
End If

How to send and receive data???

??? SerialPort.Writ e(??????)
??? TextBox1.Text = SerialPort.Read Existing

SerialPort.Clos e()

p.s. according to manual, the responce of device is also in hexadeciaml
format, smt. like 0xFF, 0x01, 0xC3, 0x00, 0x05, 0xFF

Any help would be greatly appreciated,

thanks in advance,
Adriano
Jul 19 '07 #1
3 31247
Dim xmtBuf() as byte = {&HFF,&H1,&HC3, &HE3,&HFF,&H FF}
SerialPort.Writ e(xmtBuf,0,xmtB uf.Length)

Dim rcvBuf(1024) as byte
SerialPort.Read (rcvBuf,0,rcvBu f.Length)

http://msdn2.microsoft.com/en-us/lib...rt(VS.80).aspx
"Adriano" <ad*****@mail.i twrote in message
news:uJ******** ******@TK2MSFTN GP05.phx.gbl...
Hello,

I'm developing an application in VB.NET 2005 that communicates with a
device through RS232,
and need to send the following sequence of hexadecimal data to the device:

0xFF, 0x01, 0xC3, 0xE3, 0xFF, 0xFF.
That's the configuration:

SerialPort.Port Name = "COM1"
SerialPort.Baud Rate = 9600
SerialPort.Stop Bits = IO.Ports.StopBi ts.One
SerialPort.Data Bits = 8
SerialPort.Pari ty = IO.Ports.Parity .None

If SerialPort.IsOp en = False Then
SerialPort.Open ()
End If

How to send and receive data???

??? SerialPort.Writ e(??????)
??? TextBox1.Text = SerialPort.Read Existing

SerialPort.Clos e()

p.s. according to manual, the responce of device is also in hexadeciaml
format, smt. like 0xFF, 0x01, 0xC3, 0x00, 0x05, 0xFF

Any help would be greatly appreciated,

thanks in advance,
Adriano

Jul 19 '07 #2
Hi,

To add to what Terry posted:

Dim Buffer() As Byte = {&HFF, &H01, &HC3, &HE3, &HFF, &HFF)

SerialPort.Writ e(Buffer, 0, 6) 'for example

--
Richard Grier, MVP
Hard & Software
Author of Visual Basic Programmer's Guide to Serial Communications, Fourth
Edition,
ISBN 1-890422-28-2 (391 pages, includes CD-ROM). July 2004, Revised March
2006.
See www.hardandsoftware.net for details and contact information.
Jul 19 '07 #3
Thanks Terry,

seems it worked!

Regards,
Adriano

"Terry Olsen" <to******@hotma il.comсообщил/сообщила в новостях следующее:
news:%2******** *******@TK2MSFT NGP04.phx.gbl.. .
Dim xmtBuf() as byte = {&HFF,&H1,&HC3, &HE3,&HFF,&H FF}
SerialPort.Writ e(xmtBuf,0,xmtB uf.Length)

Dim rcvBuf(1024) as byte
SerialPort.Read (rcvBuf,0,rcvBu f.Length)

http://msdn2.microsoft.com/en-us/lib...rt(VS.80).aspx
"Adriano" <ad*****@mail.i twrote in message
news:uJ******** ******@TK2MSFTN GP05.phx.gbl...
>Hello,

I'm developing an application in VB.NET 2005 that communicates with a
device through RS232,
and need to send the following sequence of hexadecimal data to the
device:

0xFF, 0x01, 0xC3, 0xE3, 0xFF, 0xFF.
That's the configuration:

SerialPort.Port Name = "COM1"
SerialPort.Baud Rate = 9600
SerialPort.Stop Bits = IO.Ports.StopBi ts.One
SerialPort.Data Bits = 8
SerialPort.Pari ty = IO.Ports.Parity .None

If SerialPort.IsOp en = False Then
SerialPort.Open ()
End If

How to send and receive data???

??? SerialPort.Writ e(??????)
??? TextBox1.Text = SerialPort.Read Existing

SerialPort.Clos e()

p.s. according to manual, the responce of device is also in hexadeciaml
format, smt. like 0xFF, 0x01, 0xC3, 0x00, 0x05, 0xFF

Any help would be greatly appreciated,

thanks in advance,
Adriano


Jul 20 '07 #4

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

2
3503
by: UrgeOverkill | last post by:
I'm having a problem sending data from a socket server. The server side reports that it has sent 4845 bytes but the client reports only 1448 bytes received. The kicker is that this ONLY happens accross the internet... I've tested this with multiple connections. If I run the same server and client, connect them locally I don't have a...
1
3782
by: Daniel | last post by:
after opening socket, sending data then closing socket 3000 times i get "Only one usage of each socket address" what am i doing wrong? is there some thing else i need to do to free up the socket after i send data into it? I simply want to open socket, send data, close socket and have the server just handle one client thread to recieve...
4
3561
by: David | last post by:
I'm wondering if python is capable of fairly precise timing and also sending data out the parallel port. For example ; making a 7.5 KHz square wave come out of one of the data pins on the printer port. I've tried to help myself with this one but searching in the "Python Library Reference" that installed with my version, yielded nothing...
9
8426
by: MNQ | last post by:
Hi All I want to use my parallel port of my PC to control some external devices. I am writing a program in ANSI C using the PacificC compiler. What I need to know is how to access the parallel port ie to send data and to read the state of the parallel port including the control lines. Can anyone help/point me in the correct direction? I...
4
8194
by: yaron | last post by:
Hi, I have a problem when sending data over TCP socket from c# client to java server. the connection established ok, but i can't send data from c# client to java server. it's work ok with TcpClient, NetworkStream and StreamWriter classes. but with low level socket it doesn't work (When using the Socket class Send method).
0
1784
by: vladimir.plotnikov | last post by:
Hello! I have problem: I have IPB forum installed. After search in IPB (search takes about 3-4 seconds for post table about 300 000 records) mysql shows "Sending Data" status and takes about 3-5 minutes. I tested with PHP 5.2, PHP 4.4, PHP 4.2.3 - with same results. I switched from MySQL 4.2.18 to 4.2.21 and 4.2.22 with same result.
1
1661
by: Charlie | last post by:
Hi: I need a way to test my TcpListner, but not sure what applications are sending data to tcp ports. How about Email or Instant Messenger? If they are tcp, what ports are they sending data to? Any other suggestions? Also, what port do Http responses target on client machine before being rendered in browser? Thanks,
3
6627
by: Mateo | last post by:
(As.Net 1.1 framework!) Hi! So, I have problem as described in subject. Here is source code:
3
2640
WhiteRider
by: WhiteRider | last post by:
I have some basic knowledge of socket programming in Python. Up to now all I have been able to do when establishing a socket is sending a string to a client, what I would like to know is what else can be sent? For example could a program be tunnelled through from the host to the client - like the way netcat allows programs to be executed after a...
0
7809
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language...
0
8159
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. ...
1
7920
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For...
0
8183
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the...
1
5685
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Duprй who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes...
0
3809
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in...
1
2312
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
1
1413
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.
0
1147
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.