Is this a known problem that the NFC Demo V1.1 does not work with Raspberry Pi B (old one) ?
We'll verify this and update soon.
In the meantime, the previous 1.0 version can still be downloaded from here: OM5577-PN7120S_Rpi_Linux_demo_v1.0.zip - Box .
Indeed the device tree related to the Raspberry Pi 1 models was not including definition of the OM5577 kit.
A new version REV1.2, supporting all Raspberry Pi models (1, 2 and 3), is now available at the same place: https://nxp.box.com/OM5577-PN7120S-Rpi-Linux.
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