Single BIT access

Herschel Karunaratne

Hi,

I want to define a register say my_flages and also define each bit separately to access individually. For example bit 0 of my_flages as key_on. And to set bit 0 in C

Key_on = 1;

And also to do other basic operations the same way.

Thanks

Herschel

over 14 years ago

0 Hyun Kim over 14 years ago

TI__Genius 14965 points

Hi,

You can do that by C programming.

Regards,

Hyun

0 Mark M over 14 years ago

TI__Mastermind 30230 points

Try this...

Use Bitwise operations to extract each bit...

#define key_on 0x01 #define bit1 0x02 #define bit2 0x04 #define bit3 0x08 #define bit4 0x10 #define bit5 0x20 #define bit6 0x40 #define bit7 0x80 unsigned my_flages = 0; if (my_flages & key_on)... if(my_flages & bit1)... if(my_flages & bit2)... if(my_flages & bit3)... if(my_flages & bit4)... if(my_flages & bit5)... if(my_flages & bit6)... if(my_flages & bit7)...

Hope this helps,
Mark

0 Herschel Karunaratne over 14 years ago in reply to Mark M

Prodigy 30 points

Hi Mark,

Thanks for your reply. This how I have been doing this but what I want is to define individual bits on a register and manupilate individual bits

Example;

if (my_flages)......

rather than using the AND operator to the entire register.

Can it be done?

Herschel

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Single BIT access