 | | Re: Time available during 1 kHz system interrupt?
|
|
Interesting discussion but it raises a few more questions. Are there any (bad) side effects when user code that is inserted in the ISR takes longer to execute than the 1 msec interrupt cycle. From experience it appears that the ISR runs on the next (...) (25 years ago, 2-Nov-99, to lugnet.robotics.handyboard)
|
| |
| | Re: Time available during 1 kHz system interrupt?
|
|
The controls are spread across a couple of files, mainly in libhb.c we get /* pulse width modulation control: if off, all motors run at full speed if on, speed bytes are used to determine motor speed */ void system_pwm_on() {bit_set(0x39, (...) (25 years ago, 2-Nov-99, to lugnet.robotics.handyboard)
|
| |
| | Re: Time available during 1 kHz system interrupt?
|
|
(...) Mostly PWM will get jerkier. If you sit to long in there and the motors happen to be 'on' then you can go faster than you would like :-) You also "lose time" in the sense that msleep is no longer accurate so there are issues with tasks that (...) (25 years ago, 2-Nov-99, to lugnet.robotics.handyboard)
|
