SLOA208B November 2014 – March 2019 TRF7970A , TRF7970A
The example firmware that is provided with this application note supports three Type 4 tag commands: Select, Read Binary, and Write Binary. These commands are all that is required to read tags and to modify the content contained within the tags. This section describes the implementation of three commands in the example firmware.
If the implementation of other commands is required, then they would need to be added to the ISO7816_4_processReceivedRequest function that is contained within the iso_7816_4.c file. Any additional commands that are implemented that way should follow the ISO 7816-4 specifications.