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Old thread has been locked -- no new posts accepted in this thread
???
04/08/09 12:00
Read: times
#164494
- T_T
Responding to: ???'s
previous message
zz T_T
List of 40 messages in thread
Topic
Author
Date
how to avoid timer interrupt interrupts serial communication
01/01/70 00:00
Here the timing is relevant!
01/01/70 00:00
how to avoid timer interrupt interrupts serial communication
01/01/70 00:00
reply Kai
01/01/70 00:00
Do ms-class delays in any interrupt.
01/01/70 00:00
re: Per Westermark
01/01/70 00:00
ISR frequency * time significantly below 100%
01/01/70 00:00
Not sure, whether I got you...
01/01/70 00:00
That is not the main problem
01/01/70 00:00
It's a common mistake...
01/01/70 00:00
oops
01/01/70 00:00
Long ISRs are no problem, unless...
01/01/70 00:00
instruction execution cycle/time in C language
01/01/70 00:00
ISR is set to 1ms but...
01/01/70 00:00
That is the problem
01/01/70 00:00
oops
01/01/70 00:00
What is the baud rate?
01/01/70 00:00
9600 baud
01/01/70 00:00
He has got to be sitting in a interupt
01/01/70 00:00
reply
01/01/70 00:00
Many many more details needed!!
01/01/70 00:00
reply Kai
01/01/70 00:00
Further questions...
01/01/70 00:00
reply Kai
01/01/70 00:00
Who tells your micro how the stepper is to be moved?
01/01/70 00:00
reply
01/01/70 00:00
So, the stepper is running all the time?
01/01/70 00:00
ya...this is the purpose of having interrupt
01/01/70 00:00
Ok, then confirm this please...
01/01/70 00:00
reply Kai
01/01/70 00:00
Still delays in the ISR?
01/01/70 00:00
reply per
01/01/70 00:00
I suspect that your ISR is longer than 1msec!
01/01/70 00:00
reply
01/01/70 00:00
ISR code
01/01/70 00:00
Post full ISR
01/01/70 00:00
reply
01/01/70 00:00
Still not full ISR shown - and debounce?
01/01/70 00:00
Addendum
01/01/70 00:00
T_T
01/01/70 00:00
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