Return Value of a Function

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pavan.emb

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Hi all,

I am writing an interfacing program for AT28C64B with C8051F120 microcontroller.

But my doubt is " I want to return the STATUS for Write function whether Success or not. I may use an int or char for this. But what I am Thinking is, is it possible to return bit type for a function."


Also i want to know whether I can pass a bit as an argument to a function or not.

Thanks in advance.
 

U think you may be using Silabs IDE....
which compiler ru using?
some compilers support bit data type.... if so u can use it
 

you can create your own enum data type. I usually just use int, but if you insist, you can do something like:

typedef enum _status_T{FAIL = 0, SUCCESS}status_T;

then you can use your function like:

status_T check_something(){

if(yes)
return SUCCESS;

else
return FAIL;
}
 

pk_volt said:
...you can create your own enum data type...
Click to expand...

Despite more complex, is an excelent idea, due other informations can be passed simultaneously.
The program also become more professional.

+++
 

You cannot pass a bit to a function. Nor can you obtain a bit response.
The smallest unit of data you can probably pass will be a byte.
(Unless you are using something unusual)

Your compiler may make it appear to be passing a bit however it
will simply be extracting the bit from the byte for you in the function.

The choice is:
You could allow this to happen if your compiler does this with a "bit" type
or
You can extract the bit from a char/byte or whatever manually yourself
such as pk_volt suggested.

jack
 

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