• Registered: 2009-12-24
  • Posts: 54

Topic: ACR122 LIBNFC " no nfc device found "

Hi all,

I managed to compile libnfc and I managed to test it with PN533.

it works.

Today I received an ACR122.

I started inf wizard I stated this:

Manufacturer Name: ACS
Device Name: ACR122

He generated the. inf file and installed the driver.

but once I raise an example (nfc-poll) he said this:

nfc-poll uses libnfc 1.5.1
No NFC device found.

Yet I do the same manipulation with the PN533.
I have checked the box LIBNFC_DRIVER_ACR122 in Cmake.

Can someone help me?

thank you

  • Registered: 2009-12-24
  • Posts: 54

Re: ACR122 LIBNFC " no nfc device found "

okay now it works. I forgot to install the driver PC / SC. I thought it was necessary to use libusb win 32 to detect the reader by the libnfc.

I notice a freeze when I communicate with the player. For example, if I run an example (nfc-dep-initiator) I have to wait long before requesting a transfer. The LED of the player will turn off  then comes back red and then turns orange (at that time I may make a transfer). but it take a few minutes.

Have you ever had this kind of thing?

thx

  • rconty
  • Administrator
  • Offline
  • Registered: 2009-04-22
  • Posts: 673

Re: ACR122 LIBNFC " no nfc device found "

That's due to a poor ACR122 support in libnfc relying on PCSC layer... Using PCSC, libnfc can use timeouts, so you have to wait few minutes the device decide to give up...

Romuald Conty