STATUS Reg with C Language

[Suraj143]

I need to check STATUS bits with C code.

Will this code works?

	number = number/2;
	if (STATUS.B0==1){	//check carry bit
	PORTB.B0=1;
	clk();}
	if (STATUS.B0==0){
	PORTB.B0=1;
	clk();
	{

 

[Mr RB]

I saw you used MikroC in another thread, so with that compiler it should work.

 

[Suraj143]

Oops sorry I didn't mentioned what compiler I used.I use mikroC.

 

[Pommie]

I don't think the carry flag will still be valid as you don't know what code will be generated. The better way to do that is,

    if (number & 1){	//check carry bit
        PORTB.B0=1;
        clk();
    }else{
        PORTB.B0=1;
        clk();
    {
    number = number/2;   //or you can do number>>=1;

Edit, should both lines say PORTB.B0=1; ?

Mike.

 

[Ian Rogers]

I don't think you can check the status bit after a math operation in C.. There is too much code overhead... Use signed variables...

After reading pommies again... if your shifting... then that's how to do it.

 

[Suraj143]

Very nice mike.That solved my problem.