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neelsfer · Jan 11 '12, 08:09 PM

I am developing an RFID-based timing system for timing cycling races. Currently have an application which was written for manual entry of race numbers using the keyboard. The RFID reader passes hex data to the PC through a serial or TCP port. I need to convert the received data into meaningful race numbers and then transmit these numbers to the app as keystrokes. i.e 0004, or 0005, etc. followed by a comma and "ENTER"
The problem...

Balaji KR · Mar 31 '11, 03:12 PM

We are writing a code for I2C interface,
where we are reading a 16 bit Hex number as two 8 bit Hex MSB and LSB, and we are returning these values as "Unsigned Char".

we want to concatenate these MSB and LSB "char" values, and finally we need one "Integer" value for our further processing.

for example: the following 2 methods are returning one "Unsigned Char" value, each...

dlite922 · Mar 2 '11, 09:40 PM

With regular decimal numbers you can just write them in. With hexadecimal I tried using 0x### but it didn't help.

Here's how i'm temporarily doing it:

Code:

nvl(flags,dec2hex(0))

flags field is a RAW data type.

silly right? Just to get a hex number?

There's got a better way. Care to share?

Thanks,

Dan

Hugo Andrade · Jan 22 '11, 04:38 AM

I want to extract the jpg image from an Hex file. The hex file comes from a serial camera that outputs a hex stream in the serial port. I need to reconstruct the image.

The output of the camera is attached in the text file.
the code I'm using reads the hex values and convert them to ASCII and save the file as a .jpg.

When I try to open the "picture.jp g" with Photo Editor it reads the start FFD8 correctly...

kimmer · Aug 25 '10, 07:21 PM

I am designing a form for a data entry function where two fields that are entered are hex (8characters). I want to edit this field for valid hex numbers. How do I do this?

MrL0co · Jan 23 '10, 03:32 PM

he there,
I am trying to read out a .md3 file.
i am stuck on a point where i have to convert a 8-bit hexedecimal char to a float.
and change it from little endian to big endian

this is how far i got

Code:

	unsigned char tmp[4];
	f32 test;

	fread(&tmp, 1, 4, f);
	test = bitshiftf32(tmp);

f32 bitshiftf32(unsigned char val[4]) {
	return val[0]|(val[1]<<8)|(val[2]<<16)|(val[3]<<24);

...

shortyzms · Mar 28 '09, 10:16 PM

I'm having a problem with assigning 64-bit hex values to unsigned long variables in MS VS2005 c++ compiler.

Code:

unsigned long Number;
Number = 0x1000000000000000UL;

After this declaration and assignment, the value in Number is always 0. However, if the hex value is 0x0000000000000 001, then the value is 1 as expected. It seems like the compiler is truncating the most significant 32 bits. How can I make this wor...

May 8 '06, 08:45 PM

private readonly Guid _tagGuid1 = new Guid( new byte[] {0x5F, 0x4D, 0x69,
0x63, 0x68, 0x61, 0x65, 0x6C, 0x20, 0x53, 0x74, 0x75, 0x61, 0x72, 0x74, 0x5F
} );

The above code is declaration of hex in c#. How to declared similary array
of hex values in Vb.net ?

Thanks for the help
Sudheendra...

Search Result

Filter and convert hex characters received through a serial port into keystrokes

in Embedded C, how to convert a Returned Hex value in the form of “Unsigned Char”

How to represent HEX in Oracle?

How to extract jpg image from hex?

Editing an 8 Character Hexadecimal Field in a Form

4-byte char from hex to float

assigning 64-bit hex values to unsigned long variables

Declaring Hex in Vb.net