HydraNFC sniffer Error "Frame size error resync data" using HydraFW v0.9 Beta

[bvernoux]

The issue seems to be a bug to configure UART on latest HydraFW v0.9 (as it does not affect HydraFW v0.8) For more details see also https://github.com/hydrabus/hydratool/issues/2

I have done some fix especially one which should fix this issue (added missing explicit initialisation of bus_mode added in latest refactor => mode_conf.config.uart.bus_mode = BSP_UART_MODE_UART) hydrabus/hydrafw@5204114 Could you rebuild the firmware with HydraFW master and tell me if that fix the issue

Note: This issue shall be part of HydraFW issue (even if I have fixed minor things at same time in this tool)

[drspangle]

I seemed to have this error in HydraFW v0.8 and v0.9. In both firmware versions I consistently got this error along with some undecipherable bytes. The output was not consistent with the output from the nfc sniff command. That output was also garbled, and I'm not sure how to interpret it. I was using a Sparkfun FTDI interface, could this have been part of the problem? We used very short wires to connect to the pin header on the hydrabus with dupont connectors.

[bvernoux]

SparkFun FTDI is a low cost chip LS/FS USB2.0 FT232RL which does not support required speed 8.4Mbauds but only something like 3Mbauds and so it is mandatory to use C232HM-DDHSL-0 (FT232H or other variant like FT2232H) So it is important to use exactly hardware described here https://github.com/hydrabus/hydrafw/wiki/HydraFW-HYDRANFC-guide#sniffer-iso14443a-with-unique-hard-real-time-infinite-trace-mode

[drspangle]

Alright, I'll revisit this once I have the correct FTDI interface.

On Wed, Apr 17, 2019, 3:03 AM Benjamin Vernoux notifications@github.com wrote:

SparkFun FTDI is a low cost chip LS/FS USB2.0 FT232RL which does not support required speed 8.4Mbauds but only something like 3Mbauds and so it is mandatory to use C32HM-DDHSL-0 (FT232H / FT2232H )

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[bvernoux]

I confirm this issue is fixed with latest hydrafw master https://github.com/hydrabus/hydrafw/commit/55e5dbe39052edf71386fd4f24772f26c4ba2605 See archive build_HydraFW_v0.9-beta-65-g55e5dbe_HydraBus_HydraNFC.zip of the firmware pre-built build_HydraFW_v0.9-beta-65-g55e5dbe_HydraBus_HydraNFC.zip