NHS31xx SW API
nfccertification: firmware allowing the NFC certification of any NHS31xx based tag.
Introduction
All NHS31xx ICs are pre-certified: the ICs underwent the full certification process mounted on the NHS3100 temperature logger demo PCB, whose schematics and layout can be found in the SDK. The ICs were flashed using this application firmware. More information about the certification and its process can be found here:

The firmware is listed here as a means to allow you to qualify your product, in the same way, minimizing the efforts needed to be undertaken. This application can also be used whenever the NFC controller or the antenna range is to be tested.

Firmware
All the firmware does is decouple the-the NFC memory from the ARM Cortex M0+ by deactivating the shared memory interface and corresponding registers. This gives an external reader full access to the RFID/NFC EEPROM.
Operation
The NHS31xx IC will deactivate the shared memory interface and then go into an endless loop. An external reader can then use the IC as a simple Ultralight EV1 tag. Any read or write will be a read or write into the NFC EEPROM. Communication with the ARM Cortex M0+ is no longer possible; nor is it possible to access the ARM Flash and ARM EEPROM non-volatile memories.