[Lazarus] K8055 counter [was: libusb access...]

Mark Morgan Lloyd markMLl.lazarus at telemetry.co.uk
Wed Nov 19 11:09:23 CET 2008

Valdas Janku-nas wrote:

[Apologies to The List but I've chopped the original text- it was coming 
out as a single line here and I'd rather not spend time reformatting. 
Apologies also if this is considered off-topic.]

The control byte, set to a fixed $05 in the C++ demo program, appears to 
be sensitive to other values. I'm considering approaching Velleman to 
ask if they have documentation with the (mild) threat that I'll load the 
app onto Sourceforge or Berlios with the reset and debounce facilities 
disabled and a pop-up hint that they wouldn't tell me.

I can confirm the "counting-air" behaviour from last night. What's more 
something told the board to do something to the kernel (Linux 2.6.x) 
that subsequently prevented the board from initialising itself- that was 
only cured when I rebooted the computer. I don't think these boards have 
any USB-accessible non-volatile storage but I was obviously worried that 
I'd broken something.

In extremis I'll load the Velleman software onto one of our very few 
Windows computers and see if I can sniff the bus, I really don't like 
doing this since I don't want to risk fouling up a system used for e.g. 
PABX setup.

Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

[Opinions above are the author's, not those of his employers or colleagues]

More information about the Lazarus mailing list