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hi i wanted to create a genric function led_on(sfr) so that i can use it in at any part of the program as i wish .but i am not able to do it because when i pass the sfr the results are not as expected. i read that sfr cannot be indirectly addressed.what are the other methods to do so. this is my code.
#include "Main.H" //macros #define LedOff (bit) 0 #define LedOn (bit) 1 //function prototype void Led_On(tByte); //special function registers sbit Port_Led = P1^7; void main() { Led_On(Port_Led); while(1); } //function to turn on the led void Led_On(tByte LEDPORT) { LEDPORT =LedOn; }
how do i modify the code?please help
"i wanted to create a genric function led_on(sfr) so that i can use it in at any part of the program as i wish" (my emphasis)
Note that there is nothing to stop you from writing directly to SFRs from any point in your program - so there is no need for this from that point of view
If your concern is simply to "hide" the underlying hardware implementation, you could do this with macros; eg,
#define LED_ON( LEDPORT ) LEDPORT=LedOn