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data content of pointer in CCS

 
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data content of pointer in CCS
PostPosted: Fri May 28, 2004 3:44 am     Reply with quote
how can u read the data pointed by a certain register so that you could transfer it to another register?
Ttelmah
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Re: data content of pointer in CCS
PostPosted: Fri May 28, 2004 5:11 am     Reply with quote
Anonymous wrote:
how can u read the data pointed by a certain register so that you could transfer it to another register?

The same way as in any C.
int8 value;
int8 *pointer_to_value;
int8 second_value;

pointer_to_value=&value;
second_value=*pointer_to_value;

The first line says that 'value' is an 8 bit integer. The second says that 'pointer_to_value', is a pointer to an 8bit integer (note that the variable itself, will then normally be a 16bit number). Then 'second_value' is another 8bit integer.
Then pointer_to value, is loaded with the address of 'value.
Finally, second_value, is loaded with the contents addressed by 'pointer_to_value'.

Best Wishes
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