File	Date	Author	Commit
configure	2009-08-11	Michael Davidsaver	[577522] build static libraries
iocBoot	2009-07-07	Michael Davidsaver	[bbb3d8] ioc setting for X1A beamline
maxpApp	2009-11-11	Michael Davidsaver	[60024e] restore position counter
.gitignore	2009-09-16	Michael Davidsaver	[7763d7] MAXp work thus far
LICENSE	2009-09-16	Michael Davidsaver	[7763d7] MAXp work thus far
Makefile	2009-06-16	Michael Davidsaver	[cd221f] initial
README	2009-09-16	Michael Davidsaver	[4c3f23] document requirements

Read Me

MAXp IOC Linux soft support

Requirements:

  The MAXp kernel driver.
  EPICS Motor Record >= 6-4-3
  EPICS Base >= 3.14.10

Motor record scanning

The motor record is special in that it wants both asynchronous (user) and period/irq scanning.
This is achieved by setting the SCAN field to Passive to allow immediate responce to user command (ie STOP!).
At the same time an internal periodic timer in the driver support calls dbProcess() to deliver status updates
while the motor is moving.

In this EPICS support module a periodic timer (struct maxp_drv::capcb) requests a capture/status update
from the MAXp device.  The device will responce with an interrupt when the request has been completed.
This interrupt comes to user-space at the ISRThread() which then calls dbProcess() as appropriate.

The SCAN field should always be 'Passive'.