I read the post here. This post was used nRF52 DK (PCA10040) . I have the nRF52 DK (PCA10056) card. nfc applications in sdk always nRF52 DK (PCA10040). How do I run nfc applications on the nRF52 DK (PCA10056) card.
If you take a look at the latest version of the nRF5 SDK (currently v.15.3.0), we have examples available for both the nRF52 DK (PCA10040) and the nRF52840 DK (PCA10056).
The NFC examples can be found in the following directory: sdk_root/examples/nfc
Best regards, Joakim