Simple driver for the "Green Magnet"
r3710 | dcl | 2012-08-28 15:06:20 +1000 (Tue, 28 Aug 2012) | 1 line
This commit is contained in:
Douglas Clowes
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# Define procs in ::scobj::xxx namespace
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# MakeSICSObj $obj SCT_<class>
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# The MakeSICSObj cmd adds a /sics/$obj node. NOTE the /sics node is not browsable.
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namespace eval ::scobj::green_magnet {
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# Environment controllers should have at least the following nodes
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# /envcont/setpoint
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# /envcont/sensor/value
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proc debug_log {args} {
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set fd [open "/tmp/green_magnet.log" a]
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puts $fd "[clock format [clock seconds] -format "%T"] $args"
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close $fd
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}
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# issue a command with a value in the target property of the variable
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proc setPoint {tc_root nextState cmd} {
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debug_log "setPoint: cmd=$cmd sct=[sct] $tc_root"
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set par "[sct target]"
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sct send "s $par"
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sct driving 1
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sct time_check [clock seconds]
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debug_log "setPoint: write $cmd$par"
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if {$par != [sct oldval]} {
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sct oldval $par
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sct update [sct target]
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sct utime readtime
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debug_log "setPoint: new data for $tc_root [sct] result=$par"
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}
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return $nextState
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}
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# issue a command to read and expect a value response
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proc getValue {tc_root nextState cmd} {
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if { [hpropexists [sct] geterror] } {
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hdelprop [sct] geterror
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}
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debug_log "getValue $cmd sct=[sct] root=$tc_root nextState=$nextState"
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sct send "?"
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return $nextState
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}
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proc rdValue {tc_root} {
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debug_log "rdValue tc_root=$tc_root sct=[sct]"
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set data [sct result]
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if {[ catch {
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debug_log "rdValue $tc_root [sct] result=$data"
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} catch_message ]} {
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debug_log "rdValue $tc_root failure"
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}
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if {[string equal -nocase -length 7 $data "ASCERR:"]} {
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sct geterror "$data"
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set nextState idle
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} elseif {[string equal -nocase -length 1 $data "?"]} {
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sct geterror "Error: $data"
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set nextState idle
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} else {
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if { [hpropexists [sct] geterror] } {
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hdelprop [sct] geterror
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}
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set rslt [scan $data %f data]
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debug_log "rdValue $tc_root Green_Magnet result=$data"
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if {$data != [sct oldval]} {
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sct oldval $data
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sct update $data
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sct utime readtime
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debug_log "rdValue new data for $tc_root [sct] result=$data"
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}
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}
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return idle
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}
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proc noResponse {} {
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return idle
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}
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# check that a target is within allowable limits
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proc check {tc_root} {
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set setpoint [sct target]
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set lolimit [hval $tc_root/lowerlimit]
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set hilimit [hval $tc_root/upperlimit]
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if {$setpoint < $lolimit || $setpoint > $hilimit} {
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sct driving 0
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error "setpoint violates limits"
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}
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return OK
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}
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# Check that the sensor is reading within tolerance of the setpoint.
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# Return 1 or 0 if it is or is not, respectively.
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proc checktol {tc_root currtime timecheck} {
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debug_log "checktol $tc_root $currtime $timecheck"
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set field [hval $tc_root/sensor/value]
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set lofield [expr {[hval $tc_root/setpoint] - [hval $tc_root/tolerance]}]
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set hifield [expr {[hval $tc_root/setpoint] + [hval $tc_root/tolerance]}]
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debug_log "checktol: field = $field, lofield = $lofield, hifield = $hifield"
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if { $field < $lofield || $field > $hifield} {
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hset $tc_root/emon/isintol 0
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set rslt 0
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} else {
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set timeout [hval $tc_root/tolerance/settletime]
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if { ($currtime - $timecheck) > $timeout } {
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hset $tc_root/emon/isintol 1
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}
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set rslt 1
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}
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debug_log "checktol: result = $rslt"
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return $rslt
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}
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##
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# @brief Implement the checkstatus command for the drivable interface
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#
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# NOTE: The drive adapter initially sets the writestatus to "start" and will
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# only call this when writestatus!="start"
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proc drivestatus {tc_root} {
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if {[sct driving]} {
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set intol [checktol $tc_root [clock seconds] [sct time_check]]
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if {$intol == 0} {
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sct time_check [clock seconds]
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} else {
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sct driving 0
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}
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return busy
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} else {
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sct print "drivestatus: idle"
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return idle
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}
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}
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proc halt {tc_root} {
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debug_log "halt $tc_root"
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sct print "halt $tc_root"
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set my_driving [SplitReply [hgetprop $tc_root/setpoint driving]]
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hset $tc_root/drive_state "HALT"
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if { $my_driving } {
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return read
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}
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return idle
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}
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##
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# @brief createNode() creates a node for the given nodename with the properties and virtual
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# function names provided
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# @param scobj_hpath string variable holding the path to the object's base node in sics (/sample/tc1)
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# @param sct_controller name of the scriptcontext object (typically sct_xxx_yyy)
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# @param cmdGroup subdirectory (below /sample/tc*/) in which the node is to be created
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# @param varName name of the actual node typically representing one device command
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# @param readable set to 1 if the node represents a query command, 0 if it is not
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# @param writable set to 1 if the node represents a request for a change in settings sent to the device
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# @param drivable if set to 1 it prepares the node to provide a drivable interface
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# @param dataType data type of the node, must be one of none, int, float, text
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# @param permission defines what user group may read/write to this node (is one of spy, user, manager)
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# @param rdCmd actual device query command to be sent to the device
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# @param rdFunc nextState Function to be called after the getValue function, typically rdValue()
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# @param wrCmd actual device write command to be sent to the device
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# @param wrFunc Function to be called to send the wrCmd to the device, typically setValue()
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# @param allowedValues allowed values for the node data - does not permit other
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# @param klass Nexus class name (?)
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# @return OK
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proc createNode {scobj_hpath sct_controller cmdGroup varName readable writable\
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drivable dataType permission rdCmd rdFunc wrCmd\
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wrFunc allowedValues klass} {
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set catch_status [ catch {
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set ns "[namespace current]"
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set nodeName "$scobj_hpath/$cmdGroup/$varName"
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if {1 > [string length $cmdGroup]} {
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set nodeName "$scobj_hpath/$varName"
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}
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debug_log "Creating node $nodeName"
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hfactory $nodeName plain $permission $dataType
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if {$readable > 0} {
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hsetprop $nodeName read ${ns}::getValue $scobj_hpath $rdFunc $rdCmd
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hsetprop $nodeName $rdFunc ${ns}::$rdFunc $scobj_hpath
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set poll_period 30
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if { $readable >= 0 && $readable <= 9 } {
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set poll_period [lindex [list 0 1 2 3 4 5 10 15 20 30] $readable]
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}
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debug_log "Registering node $nodeName for poll at $poll_period seconds"
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$sct_controller poll $nodeName $poll_period
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}
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if {$writable == 1} {
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set parts [split "$wrFunc" "."]
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if { [llength $parts] == 2 } {
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set func_name [lindex $parts 0]
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set next_state [lindex $parts 1]
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hsetprop $nodeName write ${ns}::$func_name $scobj_hpath $next_state $wrCmd
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hsetprop $nodeName $next_state ${ns}::$next_state $scobj_hpath
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} else {
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hsetprop $nodeName write ${ns}::$wrFunc $scobj_hpath noResponse $wrCmd
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hsetprop $nodeName noResponse ${ns}::noResponse
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}
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hsetprop $nodeName writestatus UNKNOWN
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debug_log "Registering node $nodeName for write callback"
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$sct_controller write $nodeName
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}
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switch -exact $dataType {
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"none" { }
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"int" { hsetprop $nodeName oldval -1 }
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"float" { hsetprop $nodeName oldval -1.0 }
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default { hsetprop $nodeName oldval UNKNOWN }
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}
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if {1 < [string length $allowedValues]} {
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hsetprop $nodeName values $allowedValues
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}
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# Drive adapter interface
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if {$drivable == 1} {
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hsetprop $nodeName check ${ns}::check $scobj_hpath
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hsetprop $nodeName driving 0
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hsetprop $nodeName checklimits ${ns}::check $scobj_hpath
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hsetprop $nodeName checkstatus ${ns}::drivestatus $scobj_hpath
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hsetprop $nodeName halt ${ns}::halt $scobj_hpath
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}
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} message ]
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if {$catch_status != 0} {
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return -code error "in createNode $message"
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}
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return OK
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}
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proc mk_sct_green_magnet {sct_controller klass tempobj tol} {
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set catch_status [ catch {
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set ns "[namespace current]"
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MakeSICSObj $tempobj SCT_OBJECT
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sicslist setatt $tempobj klass $klass
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sicslist setatt $tempobj long_name $tempobj
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set scobj_hpath /sics/$tempobj
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set deviceCommand {\
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{} setpoint 0 1 1 float user {} {} {} {setPoint} {}\
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sensor value 1 0 0 float internal {} {rdValue} {} {} {}\
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}
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hfactory $scobj_hpath/sensor plain spy none
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foreach {cmdGroup varName readable writable drivable dataType permission rdCmd rdFunc wrCmd wrFunc allowedValues} $deviceCommand {
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createNode $scobj_hpath $sct_controller $cmdGroup $varName $readable $writable $drivable $dataType $permission $rdCmd $rdFunc $wrCmd $wrFunc $allowedValues $klass
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}
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hfactory $scobj_hpath/tolerance plain user float
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hsetprop $scobj_hpath/tolerance units "T"
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hfactory $scobj_hpath/tolerance/settletime plain user float
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hset $scobj_hpath/tolerance/settletime 5.0
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hsetprop $scobj_hpath/tolerance/settletime units "s"
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hset $scobj_hpath/tolerance $tol
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hfactory $scobj_hpath/lowerlimit plain mugger float
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hsetprop $scobj_hpath/lowerlimit units "T"
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hset $scobj_hpath/lowerlimit 0
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hfactory $scobj_hpath/upperlimit plain mugger float
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hsetprop $scobj_hpath/upperlimit units "T"
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hset $scobj_hpath/upperlimit 6
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hfactory $scobj_hpath/emon plain spy none
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hfactory $scobj_hpath/emon/monmode plain user text
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hsetprop $scobj_hpath/emon/monmode values idle,drive,monitor,error
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hset $scobj_hpath/emon/monmode "idle"
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hfactory $scobj_hpath/emon/isintol plain user int
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hset $scobj_hpath/emon/isintol 1
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hfactory $scobj_hpath/emon/errhandler plain user text
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hset $scobj_hpath/emon/errhandler "pause"
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hfactory $scobj_hpath/drive_state plain mugger text
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hset $scobj_hpath/drive_state "UNKNOWN"
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hsetprop $scobj_hpath type part
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foreach snsr {sensor} {
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foreach {rootpath hpath klass priv} "\
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$scobj_hpath $snsr NXsensor spy\
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$scobj_hpath $snsr/value sensor user\
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" {
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hsetprop $rootpath/$hpath klass $klass
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hsetprop $rootpath/$hpath privilege $priv
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hsetprop $rootpath/$hpath control true
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hsetprop $rootpath/$hpath data true
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hsetprop $rootpath/$hpath nxsave true
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}
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hsetprop $scobj_hpath/$snsr type part
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hsetprop $scobj_hpath/$snsr/value nxalias tc1_${snsr}_value
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hsetprop $scobj_hpath/$snsr/value mutable true
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hsetprop $scobj_hpath/$snsr/value sdsinfo ::nexus::scobj::sdsinfo
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}
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hsetprop $scobj_hpath privilege spy
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::scobj::hinitprops $tempobj setpoint
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if {[SplitReply [magnetic_simulation]]=="false"} {
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hsetprop $scobj_hpath/setpoint type drivable
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ansto_makesctdrive ${tempobj}_driveable $scobj_hpath/setpoint $scobj_hpath/sensor/value $sct_controller
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}
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} catch_message ]
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if {$catch_status != 0} {
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return -code error $catch_message
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}
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}
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namespace export mk_sct_green_magnet
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}
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##
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# @brief Create a Green Magnet power supply controller
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#
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# @param name, the name of the power supply controller (eg tc1)
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# @param IP, the IP address of the device, this can be a hostname, (eg ca1-kowari)
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# @param port, the IP protocol port number of the device
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# @param _tol (optional), this is the initial tolerance setting
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proc add_green_magnet {name IP port {_tol 5.0}} {
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set fd [open "/tmp/green_magnet.log" a]
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if {[SplitReply [magnetic_simulation]]=="false"} {
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puts $fd "makesctcontroller green_magnet std ${IP}:$port"
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makesctcontroller green_magnet std ${IP}:$port
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}
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puts $fd "mk_sct_green_magnet green_magnet environment $name $_tol"
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mk_sct_green_magnet green_magnet environment $name $_tol
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puts $fd "makesctemon $name /sics/$name/emon/monmode /sics/$name/emon/isintol /sics/$name/emon/errhandler"
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makesctemon $name /sics/$name/emon/monmode /sics/$name/emon/isintol /sics/$name/emon/errhandler
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close $fd
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}
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puts stdout "file evaluation of sct_green_magnet.tcl"
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set fd [open "/tmp/green_magnet.log" w]
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puts $fd "file evaluation of sct_green_magnet.tcl"
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close $fd
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namespace import ::scobj::green_magnet::*
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#add_green_magnet magnet 137.157.201.213 502 5
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#add_green_magnet magnet localhost 30509 0.001
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