hex to binary (Vantage)
troberts
Posts: 228
I am using a Vantage system to control my lighting. The AMX module does not seem to work for my application where Keypad IDs start at 65. So I am creating my own code for control. Vantage reports back keypad led information as a hex number. Does anyone know how to convert a hex number into binary. With binary I will be able to give client feedback for lighting...with hex I'm not sure how. Thanks for any help.
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We covered this just a couple of days ago in a different thread.
Look up HEXTOI in the help text. I think that's what you are looking for.
I'm guessing that you're getting ascii characters that are a hex representation of an integer.
If that's so, then the first thing you need to do is to get an integer and you can do this with the HEXTOI function. So, if the device returns the hex string 'AA' (decimal 170), you would have:
now that you have the integer, I'm assuming you need to extract the bit information and format it in some way. Not too long ago, someone posted a Word document that went into the Netlinx bitwise operations (find it by searching the forums for "bitwise") and this document explains how to get the bit values from an integer.
Or, you can just divide the integer by 2 repeatedly and the remainders will be the bit values.
If your bits are numbered 1 to 8 from right to left, you could do:
nIntegerValueTemp = nIntegerValue for (i = 1; i < 9; i++) { nBit[i] = nIntegerValueTemp % 2 nIntegerValueTemp = nIntegerValueTemp / 2 }now, the integer array nBit[] holds the bit values.Then
That will result in:
sBitString = '10101010'
and 170 = $AA = 10101010b
I guess I'm not exactly sure what you are trying to do. The integer value doesn't actually change when you display it in different formats -- what you see is just various ways to represent an integer value in an interface.
If you need the status of a particular bit, that is stored in the variable nBit in the code sample that I posted before. You can also extract whatever information about the binary using the bitwise operators though if all you want to do is extract a bit's status, I find it easier on my brain to just do it with the modulus operator.
If you want to use these for feedback, an example using the IO ports might look like:
for (i = 1; i < 9, i++)
{
[dvIO,i] = nBit
}
assuming that channel 1 represents the least significant bit.
That's the second time that troberts has asked for the "binary value" and made no mention of bits.
hextoi converts an ASCII representation of the hex value of whatever into a number.
The number IS binary.
Example:
Num = HEXTOI('126EC') // Num = 75500
Num doesnt look like binary, but I now know what I need to do, so thanks to all again.
The processor sees $126EC == 75500== 0223354 == 10010011011101100
They're all numnerical representation of the same number (hex, decimal, octal, binary)
This is true, but it's the ASCII that throws people all the time. It gets very confusing, becase a numeral 1 is just 1, but the ASCII 1 has a numerical of 49 ... yet we use the same glyph, "1," to represent both, and the context does not always make it clear which one is needed.
I won't say when it was, but everyone in the class had very long hair.
e.g.
SEND_STRING dev,"'ka 1 A',$0D";
SEND_STRING dev,"'ka 1 ',$0A,$0D"; // NOT THE SAME
Yeah, and that's rarely apparent from the manual because they don't show an example.