Changes to get and set the field coil values

site_ansto/instrument/config/beamline/he3_polanal.sct

@@ -3,7 +3,7 @@ driver he3_polanal = {
   protocol = std;
   class = instrument;
   simulation_group = rfgen_simulation;
-  make_args = '{has_pol true} {has_anal true}';
+  make_args = '{has_pol true} {has_anal true} {has_coil false}';
 
   group polariser = {
     conditional = '[string equal -nocase ${has_pol} "true"]';
@@ -11,7 +11,7 @@ driver he3_polanal = {
     var spin = {
       readable = 900;
       read_command = 'polariser';
-      read_function = rdValue;
+      read_function = read_spin;
       writeable = 1;
       write_command = 'polariser';
       check_function = chkWrite;
@@ -42,7 +42,7 @@ driver he3_polanal = {
     var spin = {
       readable = 900;
       read_command = 'analyser';
-      read_function = rdValue;
+      read_function = read_spin;
       writeable = 1;
       write_command = 'analyser';
       check_function = chkWrite;
@@ -67,12 +67,82 @@ driver he3_polanal = {
     var timestamp = { type = int; }
   }
 
+  group magnet = {
+    conditional = '[string equal -nocase ${has_coil} "true"]';
+    type = float;
+    group sense = {
+      var x_voltage = {}
+      var x_current = {}
+      var y_voltage = {}
+      var y_current = {}
+      var z_voltage = {}
+      var z_current = {}
+      var sense = {
+        type = int; data = false; mutable = false; nxsave = false;
+        readable = 30;
+        read_command = 'magnet_xyz';
+        read_function = read_magnet;
+        writeable = 1;
+        write_function = fetch_magnet;
+        write_command = 'magnet_xyz';
+      }
+    }
+    group setpoint = {
+      var x_current_sp = {}
+      var y_current_sp = {}
+      var z_current_sp = {}
+      var store = {
+        type = int; data = false; mutable = false; nxsave = false;
+        writeable = 1;
+        write_function = write_magnet;
+        write_command = 'magnet_xyz';
+      }
+    }
+  }
+
+  code read_magnet = {
+    @TCL
+    set dlist [split [string trim ${data}]]
+    if {[llength $dlist] != 7} {
+      error "Syntax error: '${data}'"
+    }
+    set index 1
+    set path [pathname [sct]]
+    set ns [namespace current]
+    foreach node {x_voltage x_current y_voltage y_current z_voltage z_current} {
+      hsetprop ${path}/${node} result [lindex $dlist ${index}]
+      sct with ${path}/${node} "${ns}::rdValue ${tc_root}"
+      incr index
+    }
+    set data 0
+    @END
+  }
+
+  code fetch_magnet = {
+    @TCL
+    # Just do a fetch and go on to the read state
+    set cmd "${cmd_str}"
+    set nextState "read_magnet"
+    @END
+  }
+
+  code write_magnet = {
+    @TCL
+    # Just do a fetch and go on to the read state
+    set path [pathname [sct]]
+    set cmd "${cmd_str}"
+    set cmd "${cmd} [hval ${path}/x_current_sp]"
+    set cmd "${cmd} [hval ${path}/y_current_sp]"
+    set cmd "${cmd} [hval ${path}/z_current_sp]"
+    @END
+  }
+
   code chkWrite = {%%
-    [namespace current]::rdValue ${tc_root}
+    [namespace current]::read_spin ${tc_root}
     clientput [sct result]
   %%}
 
-  code rdValue = {%%
+  code read_spin = {%%
     set dlist [split [string trim ${data}]]
     if {[llength ${dlist}] < 2} {
       sct geterror "Syntax Error: '${data}'"