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Some refactoring, also placed wait14443a here

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martin.holst@gmail.com 2013-10-17 19:21:04 +00:00
parent 5eab31c336
commit 65e344df3e
1 changed files with 46 additions and 29 deletions
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75
client/lualibs/read14a.lua
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@ -87,37 +87,54 @@ local function sendToDevice(command, ignoreresponse)
return response,nil
end
-- This function does a connect and retrieves som einfo
-- @param dont_disconnect - if true, does not disable the field
-- @return if successfull: an table containing card info
-- @return if unsuccessfull : nil, error
local function read14443a(dont_disconnect)
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
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 = parse1443a(data)
else
err ="No response from card"
end
if err then
print(err)
return nil, err
end
return info
end
---
-- Waits for a mifare card to be placed within the vicinity of the reader.
-- @return if successfull: an table containing card info
-- @return if unsuccessfull : nil, error
local function waitFor14443a()
print("Waiting for card... press any key to quit")
while not core.ukbhit() do
res, err = read14443a()
if res then return res end
-- err means that there was no response from card
end
return nil, "Aborted by user"
end
local library = {
-- This function does a connect.
-- @param dont_disconnect - if true, does not disable the field
read1443a = function(dont_disconnect)
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
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 = parse1443a(data)
else
err ="No response from card"
end
if err then
print(err)
return nil, err
end
return info
end,
read1443a = read14443a,
waitFor14443a = waitFor14443a,
parse1443a = parse1443a,
sendToDevice = sendToDevice,
ISO14A_COMMAND = ISO14A_COMMAND,