tutorial

mailto:norume@aps.anl.gov../asynDriver.htmltutorial.pdf../devGpib.htmlHowtocreateEPICSdevicesupportforasimpleserialorGPIBdeviceW.EricNorumnorume.aps.anl.govAugust19,20091 IntroductionThistutorialprovidesstep by stepinstructionsonhowtocreateEPICSsupportforasimpleserialorGPIB(IEEE 488)device. The steps are presented in a way that should make it possible to apply them in cookbook fashion to createsupport for other devices. For comprehensive description of all the details of the I/O system used here, refer to theasynDriver anddevGpib documentation.This document isn’t for the absolute newcomer though. You must have EPICS installed on a system somewhere andknowhowtobuildandruntheexampleapplication. Inparticularyoumusthavethefollowinginstalled:• EPICSR3.14.6orhigher.• EPICSmodules/soft/asynversion4.0orhigher.Serial and GPIB devices can now be treated in much the same way. The EPICS ’asyn’ driver devGpib module canuse the low level drivers which communicate with serial devices connected to ports on the IOC or to Ethernet/SerialconvertersorwithGPIBdevicesconnectedtolocalI/OcardsortoEthernet/GPIBconverters.I based this tutorial on the device support I wrote for a CVI Laser Corporation AB300 filter wheel. You’re almostcertainly interested in controlling some other device so you won’t be able to use the information directly. I chosethe AB300 as the basis for this tutorial since the AB300 has a very limited command set, which keeps this documentsmall, and yet ...