Structure variable : how to set as generic ?

Hi All,

The below is the snippet of code which i am working on .
i am wriiting a switch case to set each of the variables in structure .

Note : REG_ADDR is address of some say (0x1000) .

i will get channel as input ,based on that i am setting the registers as shown in "Compute" function.

Code:

---

/* Some header definitions */
---------------------------------
struct REG_TYPE_tag
{
    int    COUNT;                   
}REG_TYPE_T;


typedef struct TOTAL_REGS_tag
{
    REG_TYPE_T        SM0;
    REG_TYPE_T        SM1;
 }TOTAL_REGS_T;

#define REG_ADDR (*( volatile TOTAL_REGS_T* )(0x1000 ))

---

----------------------------------------------------------------
"Compute" is a function which will just set the variable COUNT to a perticular value.
----------------------------------------------------------------------------

Code:

---

Void Compute(channel)
{  .....
 switch(channel)
 {
  case 0 :  REG_ADDR.SM0.COUNT = 10;
            break;
  case 1 :  REG_ADDR.SM1.COUNT = 10;
            break; 
  default :
            break ;
  }
 }

---

----------------------------------
here in the above 'Compute' function if you see, only the
" SM(X) " is only changing in the case statements .
But is there a way where i can avoid "Switch" . and do like follwing
which will save me some lines of code

Code:

---

Compute(channel)
 {
    REG_ADDR.SM[channel].COUNT = 10; 
  }

---

Because i dont want to write so many switch cases
Note: i have taken part of code only in this ..

Are there any ways which is better in this case ?

Thanks
prabhakar

You can use an array of structures instead of a bunch of structures. Instead of having:

Code:

---

typedef struct TOTAL_REGS_tag
{
    REG_TYPE_T        SM0;
    REG_TYPE_T        SM1;
 }TOTAL_REGS_T;

---

replace it with

Code:

---

typedef struct TOTAL_REGS_tag
{
    REG_TYPE_T        SM[2];
 }TOTAL_REGS_T;

---

That would have an SM[0] and an SM[1]. Is that what you were looking for?
~Sven

Yes , i can replace with array of structures .
but ,my issue is something like template in c++ ,where i wanna do like the below

Code:

---

Compute(channel)
 {
    REG_ADDR.SM[channel].COUNT = 10;
  }

---

i want to get rid of this
SM0 or SM1 and i want to replace with
SMX in "Compute" Function.
See First post for "Compute" Function.

Thanks
pprabhakar

That is how you do it. Make it an array of structures and then that works. Maybe I dont understand the question?
~Sven