Byte Input into Custom Modulator

GNU Radio
1

Got a question concerning the byte data type in GNU Radio. I am writing
my
own PSK modulator and I am having an issue understanding how the byte
data
type appears as I am using it for my input.

I know byte is a char data type in C++ however how does it come in? Is
it
the binary data stream of a character? Is it exactly how it is typed in,
e.g. 1, 3, 5?

I am asking because the test data I am trying to modulate is a series of
prime numbers in a vector source block. So I am not entirely sure if I
have
to do the conversion to binary myself. I have tried to do a file sink to
see how char data appear but the file is just repeating characters that
make no sense.

Thanks,

Jon Fox

2

On 06.02.2014 16:24, Jonathan F. wrote:

have to do the conversion to binary myself. I have tried to do a file
sink to see how char data appear but the file is just repeating
characters that make no sense.

Jonathan,

byte is just that – bytes. If you’re reading from a file, the bytes of
this file get streamed as-is.

Don’t confuse this with characters / strings! If you write ‘23’ into a
file, you’ll get two bytes, with the ASCII codes of each character.

Martin

3

Answers my question, thank you for the response.

Jon