This shield can be used with or without HydraBus board, you can even cut HydraBus specific right side (on the line) to have a tiny ESP-WROOM-32 breakout board.
Now the port of hydrafw to latest ChibiOS version 4.0 is finished and we (mainly me and Balda) have not found any issue so far.
The new chibios is now used in hydrafw master repository https://github.com/bvernoux/hydrafw
See documentation here:
For more details see:
16.04.2016 – HydraFW v0.7 Beta Generic: Fixed ultra slow build (because of built in rules…) thanks to tuxscreen post http://hydrabus.com/forums/topic/make-is-ultra-slow/#post-696 for the fix Updated ‘tokenline’ submodule to the latest version Change T_ARG_INT to T_ARG_UINT, supporting only unsigned integers. HydraBus specific: Added freeform string as […]
29.11.2015 – HydraFW v0.6 Beta Generic: Update of tokenline, now both T_ARG_INT and T_ARG_FLOAT take k, m and g suffixes and apply a decimal factor on both argument types. It is always compatible with old syntax khz, mhz, ghz (only first character is checked). HydraBus specific: Added 2-wire mode (support frequency up to […]
See the excellent Peter Fillmore conference slides from SyScan2015: Crash & Pay: Owning and Cloning NFC Payment cards
For more details on Symposium on Security for Asia Network (SyScan) see https://www.syscan.org
Update HydraFW v0.5-beta-1-g4897d50 add HydraNFC Tag Emulation UID ISO14443A (Mifare 1K) command emul_uid_14443A
See github pre-built dfu firmware
See source code GitHub HydraFW
See also specific code for ISO14443A UID Emulation: