+-- This function does a connect and retrieves som einfo
+-- @param dont_disconnect - if true, does not disable the field
+-- @param no_rats - if true, skips ISO14443-4 select (RATS)
+-- @return if successfull: an table containing card info
+-- @return if unsuccessfull : nil, error
+local function read14443a(dont_disconnect, no_rats)
+       local command, result, info, err, data
+
+       command = Command:new{cmd = cmds.CMD_READER_ISO_14443a,
+                                                               arg1 = ISO14A_COMMAND.ISO14A_CONNECT}
+       if dont_disconnect then
+               command.arg1 = command.arg1 + ISO14A_COMMAND.ISO14A_NO_DISCONNECT
+       end
+       if no_rats then
+               command.arg1 = command.arg1 + ISO14A_COMMAND.ISO14A_NO_RATS
+       end
+       local result,err = sendToDevice(command)
+       if result then
+               local count,cmd,arg0,arg1,arg2 = bin.unpack('LLLL',result)
+               if arg0 == 0 then
+                       return nil, "iso14443a card select failed"
+               end
+               data = string.sub(result,count)
+               info, err = parse14443a(data)
+       else
+               err ="No response from card"
+       end