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在Linux中使用ACS ACR1252U USB NFC讀卡器

[英]Using the ACS ACR1252U USB NFC Card reader in Linux

我正在使用通過USB連接的ACS ACR1252U讀卡器( http://www.acs.com.hk/zh/products/342/acr1252u-usb-nfc-reader-iii-nfc-forum-certified-reader/ )老實說,我不知道如何使它工作。 我用Google搜索了很多東西,但是沒有運氣。 我正在使用Debian的變體。 以下是我所做的事情:

我使用dmesg得到以下內容:

[ 7173.059710] usb 1-1.3: new full-speed USB device number 6 using dwc_otg
[ 7173.160500] usb 1-1.3: not running at top speed; connect to a high speed hub
[ 7173.163114] usb 1-1.3: New USB device found, idVendor=072f, idProduct=223b
[ 7173.163147] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 7173.163168] usb 1-1.3: Product: ACR1252 Dual Reader
[ 7173.163186] usb 1-1.3: Manufacturer: ACS

我使用以下Python代碼來獲取有關設備的更多詳細信息:

#!/usr/bin/python

import sys
import usb.core

# find USB devices
dev = usb.core.find(find_all=True)


# loop through devices, printing vendor and product ids in decimal and hex
for cfg in dev:
    print cfg
    sys.stdout.write('Decimal VendorID=' + str(cfg.idVendor) + ' & ProductID=' + str(cfg.idProduct) + '\n')
    sys.stdout.write('Hexadecimal VendorID=' + hex(cfg.idVendor) + ' & ProductID=' + hex(cfg.idProduct) + '\n\n')

該特定設備的輸出為:

DEVICE ID 072f:223b on Bus 001 Address 004 =================
 bLength                :   0x12 (18 bytes)
 bDescriptorType        :    0x1 Device
 bcdUSB                 :  0x200 USB 2.0
 bDeviceClass           :    0x0 Specified at interface
 bDeviceSubClass        :    0x0
 bDeviceProtocol        :    0x0
 bMaxPacketSize0        :   0x40 (64 bytes)
 idVendor               : 0x072f
 idProduct              : 0x223b
 bcdDevice              :  0x100 Device 1.0
 iManufacturer          :    0x1 ACS
 iProduct               :    0x2 ACR1252 Dual Reader
 iSerialNumber          :    0x0 
 bNumConfigurations     :    0x1
  CONFIGURATION 1: 200 mA ==================================
   bLength              :    0x9 (9 bytes)
   bDescriptorType      :    0x2 Configuration
   wTotalLength         :   0xb1 (177 bytes)
   bNumInterfaces       :    0x2
   bConfigurationValue  :    0x1
   iConfiguration       :    0x0 
   bmAttributes         :   0x80 Bus Powered
   bMaxPower            :   0x64 (200 mA)
    INTERFACE 0: Smart Card ================================
     bLength            :    0x9 (9 bytes)
     bDescriptorType    :    0x4 Interface
     bInterfaceNumber   :    0x0
     bAlternateSetting  :    0x0
     bNumEndpoints      :    0x3
     bInterfaceClass    :    0xb Smart Card
     bInterfaceSubClass :    0x0
     bInterfaceProtocol :    0x0
     iInterface         :    0x4 ACR1252 Dual Reader PICC
      ENDPOINT 0x1: Bulk OUT ===============================
       bLength          :    0x7 (7 bytes)
       bDescriptorType  :    0x5 Endpoint
       bEndpointAddress :    0x1 OUT
       bmAttributes     :    0x2 Bulk
       wMaxPacketSize   :   0x40 (64 bytes)
       bInterval        :    0x0
      ENDPOINT 0x81: Bulk IN ===============================
       bLength          :    0x7 (7 bytes)
       bDescriptorType  :    0x5 Endpoint
       bEndpointAddress :   0x81 IN
       bmAttributes     :    0x2 Bulk
       wMaxPacketSize   :   0x40 (64 bytes)
       bInterval        :    0x0
      ENDPOINT 0x84: Interrupt IN ==========================
       bLength          :    0x7 (7 bytes)
       bDescriptorType  :    0x5 Endpoint
       bEndpointAddress :   0x84 IN
       bmAttributes     :    0x3 Interrupt
       wMaxPacketSize   :   0x40 (64 bytes)
       bInterval        :    0xa
    INTERFACE 1: Smart Card ================================
     bLength            :    0x9 (9 bytes)
     bDescriptorType    :    0x4 Interface
     bInterfaceNumber   :    0x1
     bAlternateSetting  :    0x0
     bNumEndpoints      :    0x3
     bInterfaceClass    :    0xb Smart Card
     bInterfaceSubClass :    0x0
     bInterfaceProtocol :    0x0
     iInterface         :    0x5 ACR1252 Dual Reader SAM
      ENDPOINT 0x2: Bulk OUT ===============================
       bLength          :    0x7 (7 bytes)
       bDescriptorType  :    0x5 Endpoint
       bEndpointAddress :    0x2 OUT
       bmAttributes     :    0x2 Bulk
       wMaxPacketSize   :   0x40 (64 bytes)
       bInterval        :    0x0
      ENDPOINT 0x82: Bulk IN ===============================
       bLength          :    0x7 (7 bytes)
       bDescriptorType  :    0x5 Endpoint
       bEndpointAddress :   0x82 IN
       bmAttributes     :    0x2 Bulk
       wMaxPacketSize   :   0x40 (64 bytes)
       bInterval        :    0x0
      ENDPOINT 0x83: Interrupt IN ==========================
       bLength          :    0x7 (7 bytes)
       bDescriptorType  :    0x5 Endpoint
       bEndpointAddress :   0x83 IN
       bmAttributes     :    0x3 Interrupt
       wMaxPacketSize   :   0x40 (64 bytes)
       bInterval        :    0xa
Decimal VendorID=1839 & ProductID=8763
Hexadecimal VendorID=0x72f & ProductID=0x223b

我安裝了PyUSB並可以使用一些示例代碼來檢測該設備,但是沒有什么比讀取NFC卡更近的了(盡管有蜂鳴聲,這使我相信USB設備本身可以正常工作)。

我還安裝了libacsccid1軟件包,該軟件包說它支持此設備https://github.com/acshk/acsccid ,但我不知道確切如何使用它。

除此之外,我不知道該怎么辦。 任何幫助將不勝感激。 我項目的目標是根據檢測到的NFC標簽的值控制GPIO輸出。

- 更新 -

我做了更多的工作,盡管仍然無法正常工作,但我有更多的數據。 具體來說,我正在努力解決這個問題: http : //www.digitalmihailo.com/usb-programming-with-python-on-linux-pyusb-version/

從數據表中,我可以確認它是USB 2.0全速設備:

在此處輸入圖片說明

為了測試,我只想讓蜂鳴器響起。 以下是此功能的設備API文檔的屏幕截圖:

在此處輸入圖片說明

因此,適用於我的設備的http://www.digitalmihailo.com/usb-programming-with-python-on-linux-pyusb-version/的簡化版本為:

#!/usr/bin/python

import os
import sys
import time

import usb.core
import usb.util


# According to what I've read, full speed USB is 64 byte packet size.
packet_len = 64

# Packing a request.
# Packets are 64 bytes long, most of the commands are 4 bytes long. So up to 18
# can be batched into a packet. For example command with bytes [0x94, 0x0, 0x0, 0x0] is getting firmware id
def pack_request(*arguments):
    packet = [0x0] * packet_len
    i = 0
    for arg in arguments:
        packet[i] = arg
        i += 1
    #packet[0:4] = [0x94, 0x0, 0x0, 0x0] #get firmware id
    return ''.join([chr(c) for c in packet])


def main():
    #Updated for the ACS ACR1252U
    dev = usb.core.find(idVendor=0x72f, idProduct=0x223b)

    # was it found?
    if dev is None:
        raise ValueError('Device not found')

    try:
        dev.detach_kernel_driver(0)
    except: # this usually mean that kernel driver has already been dettached
        pass

    # ACS ACR1252U only has 1 configuration
    dev.set_configuration()

    # Interface 0: Dual Reader PICC. This is what we want
    # Interface 1: Dual Reader SAM
    try:
        dev.set_interface_altsetting(0)
    except usb.core.USBError:
        print 'Error setting interface!'
        pass

    # According to the API, to sound the buzzer we must send:
    #
    # Class: 0xe0
    # INS: 0x00
    # P1: 0x00
    # P2: 0x28
    # Lc: 0x01
    # DataIn (duration): 0xff (for 255 * 10ms = 2.55 seconds)
    raw = pack_request(0xe0, 0x00, 0x00, 0x28, 0x01, 0xff)

    #send the packet
    # Params are (endpoint, data, timeout)
    #
    # According to the script output:
    # ENDPOINT 0x01: Bulk OUT
    dev.write(endpoint=0x01, data=raw)
    #done


if __name__ == '__main__':
  main()

當我運行時,什么也沒有發生……沒有蜂鳴器,沒有錯誤消息。 這有什么問題嗎?

謝謝!

出於好奇,我打開了Info.plist(在/usr/lib/pcsc/drivers/ifd-acsccid.bundle/Contents/ ),發現沒有列出我的設備。

因此,我繼續將信息添加到ifdVendorID(0x072F),ifdProductID(0x223B)和ifdFriendlyName(ACS ACR1252U Dual PICC-SAM Reader)陣列中,並運行了pcscd -fd。

僅在此步驟之后,pcsc_scan才真正檢測到我的設備,其他所有內容或多或少開始起作用。 最后,我沒有直接使用USB,而是使用了pyscard( http://pyscard.sourceforge.net/ )庫。

這使蜂鳴器開始工作:

def sound_buzzer(reps):

    #NOTE: This function only works if a card is present!

    try:
        hresult, hcontext = SCardEstablishContext(SCARD_SCOPE_USER)
        assert hresult == SCARD_S_SUCCESS

        hresult, readers = SCardListReaders(hcontext, [])

        assert len(readers) > 0

        reader = readers[0]

        hresult, hcard, dwActiveProtocol = SCardConnect(hcontext, reader, SCARD_SHARE_SHARED, SCARD_PROTOCOL_T0 | SCARD_PROTOCOL_T1)

        while reps > 0:

            buzzer = [0xE0, 0x00, 0x00, 0x28, 0x01, 0x0F] # 0x0F = 15 * 10ms
            hresult, response = SCardControl(hcard, SCARD_CTL_CODE(3500), buzzer)
            sleep(0.15)
            reps = reps - 1

    except Exception, e:
        #print 'Exception: '+ str(e)
        pass

    return

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