driver astrium_chopper = {
  vendor = astrium; device = chopper; protocol = std;
  class = NXdisk_chopper; simulation_group = chopper_simulation;

  group disk_1 = {
    var state = {
      type = text; mutable = true; priv = user; readable = 1;
      read_command = '1'; fetch_function = fetchState; read_function = readState;
      property 'my_state' = 'idle';
    }
    var master = { type = text; }
    var rspeed = { type = float; }
    var aspeed = { type = float; mutable = true; }
    var rphase = { type = float; }
    var aphase = { type = float; mutable = true; }
    var frequency = { type = float; mutable = true; }
  }

  group disk_2 = {
    var state = {
      type = text; mutable = true; priv = user; readable = 1;
      read_command = '2'; fetch_function = fetchState; read_function = readState;
      property 'my_state' = 'idle';
    }
    var master = { type = text; }
    var rspeed = { type = float; }
    var aspeed = { type = float; mutable = true; }
    var rphase = { type = float; }
    var aphase = { type = float; mutable = true; }
    var frequency = { type = float; mutable = true; }
  }

  group disk_3 = {
    var state = {
      type = text; mutable = true; priv = user; readable = 1;
      read_command = '3'; fetch_function = fetchState; read_function = readState;
      property 'my_state' = 'idle';
    }
    var master = { type = text; }
    var rspeed = { type = float; }
    var aspeed = { type = float; mutable = true; }
    var rphase = { type = float; }
    var aphase = { type = float; mutable = true; }
    var frequency = { type = float; mutable = true; }
  }

  group disk_4 = {
    var state = {
      type = text; mutable = true; priv = user; readable = 1;
      read_command = '4'; fetch_function = fetchState; read_function = readState;
      property 'my_state' = 'idle';
    }
    var master = { type = text; }
    var rspeed = { type = float; }
    var aspeed = { type = float; mutable = true; }
    var rphase = { type = float; }
    var aphase = { type = float; mutable = true; }
    var frequency = { type = float; mutable = true; }
  }

  code fetch_function fetchState = {%%
    set my_state [sct my_state]
    if { ${my_state} == "user" } {
      set cmd "user:Bilby"
    } elseif { ${my_state} == "password" } {
      set cmd "password:RwN"
    } else {
      set cmd "#SOS#STATE ${cmd_str}"
    }
  %%}

  code read_function readState = {%%
    if { [string equal -length 22 ${data} "#SES#Fill in your user"] } {
      sct my_state "user"
      set nextState "read"
    } elseif { [string equal -length 22 ${data} "#SES#Fill in your pass"] } {
      sct my_state "password"
      set nextState "read"
    } elseif { [string equal -length 22 ${data} "#SES#You are not a val"] } {
      sct my_state "user"
      set nextState "read"
    } else {
      sct my_state "idle"
      set nextState "idle"
      if { [string equal -length 12 ${data} "#SOS#ACCEPT "] } {
        set my_status [split [string range ${data} 12 end] "#"]
        foreach field ${my_status} {
          set lst [split ${field} "="]
          if { [llength ${lst}] > 1 } {
            set lhs "[string trim [lindex ${lst} 0]]"
            set rhs "[string trim [lindex ${lst} 1]]"
            sct "attr_${lhs}" "${rhs}"
            set base [pathname [sct]]
            switch [string toupper ${lhs}] {
              "ASPEED" {
                if [string is double "${rhs}"] {
                  set freq [expr "${rhs}" / 60.0]
                  if { "[hval ${base}/frequency]" != "${freq}" } {
                    hset ${base}/frequency ${freq}
                  }
                }
              }
              "RSPEED" - "APHASE" - "RPHASE" - "MASTER" {
                if { "[hval ${base}/${node}]" != "${rhs}" } {
                  hset ${base}/${node} "${rhs}"
                }
              }
            }
            if { [string equal -nocase ${lhs} "STATE"] } {
              set data "${rhs}"
            }
          }
        }
      } else {
        sct geterror "${data}"
      }

    }
  %%}

  code mkDriver = {%%
  %%}
}