| ??? 09/15/08 09:32 Read: times |
#158274 - act on LEVEL or TRANSITION Responding to: ???'s previous message |
Priyam Khanna said:
somebody please help me with C code as to how to monitor the input port 0 for switching inputs.I need to perform different functions while the inputs at port0 are randomly switching between 1s and 0s.Can somebody just provide C code, something like an infinite loop for performing different operations depending on the input at say P0^3 bit at that instant.(keep monitoring pin P0^3,if it is high-do this, if it is low-do that).
what you actually want to do act on level or transition? Just some info in normal c code //compiler SDCC //for level //some where in main() or timerx_isr if(Px_y) act_on_high(); else act_on_low(); //****************************************************************// //for edge bit prev_stat = Px_y; //somewhere in timerx_isr if(Px_y) { if(!(prev_stat)) act_on_low_to_high(); prev_stat = 1; } else { if(prev_stat) act_on_high_to_low(); prev_stat = 0; } PS: this is in general description, needs more info for exact help. Mahesh |
| Topic | Author | Date |
| PLEASE HELP | 01/01/70 00:00 | |
| act on LEVEL or TRANSITION | 01/01/70 00:00 | |
| See existing thread! | 01/01/70 00:00 | |
| RE: See existing thread | 01/01/70 00:00 | |
Exactly! | 01/01/70 00:00 | |
| hey Mr Neil | 01/01/70 00:00 |