convert ascii to numeric

[reen]

hi,
i´ve got a problem with messages received over rs232. i can´t convert the ascii messages like "é$" into a numeric display. i´ve already tried type casting. but it doesn´t convert them correctly.
i attached a picture that should explain it a little bit better.

[reen]

here is another picture of the results.

[matthias.richwin]

Hi,

what is wrong with "Vorzeichenloses Byte-Array"? It seems to work fine, oder?

Maybe you want to interpret the two single bytes as a 16 bit value. Then you might try Array[0]*256 + Array[1], or vice versa, depending which one is the msb.

Regards
Matthias

Message Edited by matthias.richwin on 04-13-2005 10:48 AM

[reen]

yes this data is okay. but how can i put these bytes of the array together, to get one numeric number?

[becktho]

Hi

If you for example read the following:

#$A (0x23, 0x24, 0x41 / 35d 36d 65d) you want to get the number 353665. Is this right?

Thomas

[reen]

no it isn´t quite right.
For example i read ascii:” which normally is 0x1194 = 4500d. but the type cast makes a 0x11940000 = 294912000d out of it.

Message Edited by reen on 04-13-2005 04:08 AM

[matthias.richwin]

Hi,

then either try my suggestion given above, or change the data type of the "0" constant wired to the type cast to the appropriate type, i.e. U16.

Regards
Matthias

Message Edited by matthias.richwin on 04-13-2005 11:13 AM

[reen]

i´ve found a solution that delivers the "4500". thanks for taking time.

[becktho]

Now you make a little mistake.

You don't have 0x1194 as one number - it just looks like if you see the string in hex-representation. In fact you still have two seperated values.
One is 0x11 and one is 0x94.

[reen]

your suggestion also works matthias.
thx.