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m6c7l avatar m6c7l commented on August 31, 2024

Hi,
which firmware are you using? Forcing a handler is only needed if using a custom firmware with a non-standard welcome message. Did you connect the FTDI port of the carrier board to the PC?

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TimHemmecke avatar TimHemmecke commented on August 31, 2024

Thanks for the reply,
the firmware i am using is the out of the box demo located at TI's mmwave_industrial_toolbox_4_8_0/labs/out_of_box_demo/68xx_mmwave_sdk_dsp/prebuild_binaries/xwr68xx_mmw_demo.bin, creating the welcome message when pressing reset:

******************************************
xWR68xx MMW Demo 03.05.00.04
******************************************

[...]
while i was writing this i redid each step and ended up fixing my problem (when using Linux).
I noticed that under my Linux system it still said (i) ports usb_discover The device has no langid (permission issue, no string descriptors supported or device error) even though things worked when i pressed the reset button, so i looked into my rules and found i assigned them to a group and put my user into it, which was the solution i found when i looked up what the thing with the rules.d was under Linux.

So in the end all i would have needed to do was to rename the example you gave in the the readme to 99-pymmw.rules (from 99-mmwave.rules) and specifically not assign them to a group like "plugdev".

Result of that is, that with the Boostboard, port discovery and auto reset are working now.
Seeing that it is an OS specific problem i'm pretty sure i installed the FTDI driver incorrectly under Windows...
What we did in the meanwhile as a workaround was to use the boostboard solely for the reset capability and captured from the ISK directly via its USB port, using a hardware button to jump the reset pins on the BOOST board (having the ISK in standalone mode still enables reset via 60-pin, if you switch some of the pins of the boost board around).

Anyway, is there a trick to installing the FTDI drivers under Windows or do i need some specific version?

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