hf_14a_read.lua

hf_14a_read.lua

local reader = require('hf_reader')
local reader14443A = require('read14a')
local getopt = require('getopt')
local ansicolors  = require('ansicolors')
-- require("socket")

copyright = ''
author = ''
version = 'v1.0.2'
desc = [[
This script reads only 14443A HF cards and outputs their UID. The script runs continuously until user press Enter.
]]
example = [[
    1. script run hf_14a_read
]]
usage = [[
script run hf_14a_read
]]
arguments = [[
    -h             - this help
]]

local function sleep(n)
--    socket.slect(nil, nil, n)
    os.execute("sleep " .. n)
end

---
-- This is only meant to be used when errors occur
local function dbg(args)
    if not DEBUG then return end
    if type(args) == 'table' then
        local i = 1
        while args[i] do
            dbg(args[i])
            i = i+1
        end
    else
        print('###', args)
    end
end

---
-- This is only meant to be used when errors occur
local function oops(err)
    print('ERROR:', err)
    core.clearCommandBuffer()
    return nil, err
end

---
-- Usage help
local function help()
    print(copyright)
    print(author)
    print(version)
    print(desc)
    print(ansicolors.cyan..'Usage'..ansicolors.reset)
    print(usage)
    print(ansicolors.cyan..'Arguments'..ansicolors.reset)
    print(arguments)
    print(ansicolors.cyan..'Example usage'..ansicolors.reset)
    print(example)
end

---
-- Main function
local function main(args)
    -- Arguments for the script
    for o, a in getopt.getopt(args, 'h') do
        if o == 'h' then return help() end
    end

--    print("Starting to read 14443A cards. Press Ctrl+C to stop.")
    print("Waiting for card... press <Enter> to quit")

    while not core.kbd_enter_pressed() do
        local info, err = reader14443A.read()

        if info then
            print( string.format( "UID: %s", tostring(info.uid) ) )
            sleep(1)
        end
    end

    print("Aborted by user")
end

main(args)