Construct a byte from bits

Thank you christian crosa, Per Westermark.

I will try this. While searching for this I came across a solution which uses union

stackoverflow.com/.../how-do-i-split-up-a-long-value-32-bits-into-four-char-variables-8bits-using

union {
   unsigned long position;
   unsigned char bytes[4];
} CurrentPosition;

CurrentPosition.position = 7654321;

The bytes can now be accessed as: CurrentPosition.bytes[0], ..., CurrentPosition.bytes[3]

Though I will be using your approach which seems very simple to me. Just asking for my knowledge, can union be used for this conversion?

Thank you christian crosa, Per Westermark.

I will try this. While searching for this I came across a solution which uses union

stackoverflow.com/.../how-do-i-split-up-a-long-value-32-bits-into-four-char-variables-8bits-using

union {
   unsigned long position;
   unsigned char bytes[4];
} CurrentPosition;

CurrentPosition.position = 7654321;

The bytes can now be accessed as: CurrentPosition.bytes[0], ..., CurrentPosition.bytes[3]

Though I will be using your approach which seems very simple to me. Just asking for my knowledge, can union be used for this conversion?

union {
   unsigned long position;
   unsigned char bytes[4];
} CurrentPosition;

CurrentPosition.position = 7654321;

yep, the use of the union should work too.

I came across a solution which uses union

Be careful with these things! Read about them here:

c-faq.com/.../index.html

I came across a solution which uses union

In particular, see here:

c-faq.com/.../taggedunion.html

Be careful with these things! Read about them here:
'simple' unions like the long/char combo discussed here is nothing to be afraid of
HOWEVER, I have seen unions made by the "I'll show them how smart I am" types that were sheer horror.

Erik

Thank you all of you. You people helped me a lot.