Android Question Bits from byte.

[Lars Andersson]

What is the simplest way to get or set single bits in a byte?

Ok, maybe this shouldn't be under questions but.... I'm used to use the following (MCU programming)
Ex:
Dim bit0, bit1 as boolean
Dim byte as byte
bit0 = byte.0 'Get bit 0 in byte
byte.1 = bit1 'Set bit 1 in byte

Lars

 

[udg]

Hi,

have a look at this post.
And on Bit object in general: http://www.b4x.com/android/help/core.html#bit

Umberto

 

[sirjo66]

I don't know if it works but.......

Dim bit0, bit1, bit2 as boolean
Dim mybyte as byte
bit0 = Bit.And(mybyte, 1) 'Get bit 0 in byte
bit1 = Bit.And(mybyte, 2) 'Get bit 1 in byte
bit2 = Bit.And(mybyte, 4) 'Get bit 2 in byte
.... and so on

Sergio

 

[Lars Andersson]

Thanks Sergio,
Getting close to the simplicity I'm used to but to set the value?

Lars

 

[udg]

To set a bit use OR.

From example above

mbyte = Bit.Or(mbyte, 4) 'sets bit 2

But Erel's SetBit function showed on first link in post#2 is better and of more general use.

Umberto

 

[Lars Andersson]

OK, thanks!
My suggestion earlier maybe a challange for Erel... ;-)

Lars