instrument: allow specifying channels in reset()

Prior to this commit, measurements to be collected were specified via
"sites" and "kinds" parameters. This has the limitation that if you
wanted measurments of kind X from site A and kind Y from site B, you'd
have to specify them as

	reset(sites=['A', 'B'], kinds=['X', 'Y'])

Which would have the effect of also collecting measurments Y for site A
and measurments X for site B. This commit adds the option of specifying
individual channels, via thier labels, e.g.

	reset(channels=['A_X', 'B_Y'])

so that only the channels you're interested in will be collected.
4 files changed
tree: d5aced58ff587a7354f3574aadeae9f19769b894
  1. devlib/
  2. doc/
  3. src/
  4. .gitignore
  5. README.rst
  6. setup.py