+-- 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