473,398 Members | 2,427 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,398 software developers and data experts.

converting a string in a hexadecimal array

Hi,
i need help for a (maybe) simple function :). I need to send by serial port a series of hexadecimal bytes with a xor control character. The language i use could not work with hexadecimal and xor operation so i decide to create a dll with a simple function which takes a string and return me a string of hexadecimal number. I know how to comunicate and how to create the dll, but i dont know how to make the function in c or c++.

the input is a string of 22 character with spaces too.
the output is a string of 25 headecimal number (or 25 bytes to simplify) for example:
02h FF FF...22 bytes...FF 03H BCC
where 02h and 03h are const character and between them are the hex value of my input string (i use FF just to simply but it could be any char).
Last i have BCC that is the exadecimal Xor complement of the 24 characters before ,to be clear a control character ( 02^FF^FF...^03 = BCC).
I hope you could help me (sorry for my english :) ).
Apr 14 '07 #1
0 1658

Sign in to post your reply or Sign up for a free account.

Similar topics

2
by: Sverre Bakke | last post by:
Hi I am using the base_convert() function to convert numbers between binary, hexadecimal, decimal, etc... It works great, but I have problems converting numbers with .'s Like this number: ...
2
by: Joel Moore | last post by:
Maybe I'm just easily baffled after an all-nighter but I can't seem to figure out how to represent a BitArray as a hexadecimal string. For example: Dim outputBank As New BitArray(8) ...
5
by: genojoe | last post by:
I thought this would be easy but it is not. I have tried: Dim sLetter As String = Chr(&H4C) 'This works Dim s As String = "&H4C" sLetter = Chr(s) 'This causes an error. My best guess...
15
by: jaks.maths | last post by:
How to convert negative integer to hexadecimal or octal number? Ex: -568 What is the equivalent hexadecimal and octal number??
5
by: Jeff Dillon | last post by:
How might I convert a string like 10.A (in hex) to it's decimal equivalent? Basically I have an input string like ((1F.A + 3A.D) - 1F.E) and need to calculate the result. Using Reflection and...
7
by: elliotng.ee | last post by:
I have a text file that contains a header 32-bit binary. For example, the text file could be: %%This is the input text %%test.txt Date: Tue Dec 26 14:03:35 2006...
2
by: CoreyWhite | last post by:
Problem: You have numbers in string format, but you need to convert them to a numeric type, such as an int or float. Solution: You can do this with the standard library functions. The...
6
by: Andrea | last post by:
Hi, suppose that I have a string that is an hexadecimal number, in order to print this string I have to do: void print_hex(unsigned char *bs, unsigned int n){ int i; for (i=0;i<n;i++){...
0
by: Terry Reedy | last post by:
A. Joseph wrote: These are number representation systems that can be applied to or used with integral, rational (numberator,denominator), and 'point' numbers. Try Wikipedia or any search...
0
by: Charles Arthur | last post by:
How do i turn on java script on a villaon, callus and itel keypad mobile phone
0
BarryA
by: BarryA | last post by:
What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...
1
by: Sonnysonu | last post by:
This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...
0
by: Hystou | last post by:
There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
0
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...
0
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...
0
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...
0
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...
0
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...

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.