??? 05/21/11 12:23 Read: times |
#182321 - CCF4 Bit Responding to: ???'s previous message |
Tom,
Are you making your software clear the CCF4 bit each time you get the PCA interrupt? If not then the MCU will get interrupted over and over until such time that this bit actually does get cleared. Note that if you do start to use the PCA overflow then at each overflow interrupt you must also clear the CF bit. It is a good idea to structure the PCA interrupt service routine in such a way so that it has code that looks similar to: IF CF Flag Set Then Clear CF Flag Do other Overflow work ENDIF IF CCF4 Flag Set Then Clear CCF4 Flag Do work associated with the capture function ENDIF Michael Karas |
Topic | Author | Date |
PCA 8051 issue | 01/01/70 00:00 | |
CCF4 Bit | 01/01/70 00:00 | |
CCF4 bit | 01/01/70 00:00 | |
run_mode?? | 01/01/70 00:00 | |
interrupt vectors | 01/01/70 00:00 | |
interrupt vectors | 01/01/70 00:00 | |
run_mode | 01/01/70 00:00 | |
Now seems like.... | 01/01/70 00:00 | |
Goes for all languages/platforms | 01/01/70 00:00 | |
my code | 01/01/70 00:00 | |
No.... | 01/01/70 00:00 | |
just a thought | 01/01/70 00:00 | |
Another Thought...![]() | 01/01/70 00:00 |