Chris Stankevitz wrote:
Q: What is the source of the alternating +/- 5ms bias that comes and
goes every few seconds?
This helps: add these lines to /boot/device.hints and reboot
hint.sio.0.flags="0x20"
hint.sio.1.flags="0x20"
Chris
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freebsd-quest
Hello,
I have a device that sends one byte over the serial line every 10ms.
Using c, I wrote an application that opens the serial port and reads
bytes in an infinite loop. I disabled all blocking (O_NONBLOCK, VMIN=0,
VTIME=0, B115200). My CPU spends ~100% of its time calling read()
[which a
