lmicdi dumps core when cannot open device about lm4tools HOT 6 CLOSED

Just booted a Linux machine here for testing this. Got the following:

Unable to open USB device: LIBUSB_ERROR_ACCESS
Unable to find any ICDI devices

Seems correct to me. I'm running ArchLinux. Which distro are you using?

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Ops... sorry... wrong app!

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Should be fixed now.

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That will do. Probably better, if you inform user, why it failed (rc = -3 doesnt say that much) via perror().

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The error is thrown by libusb_open(). A quick look at the docs din't mention it setting errno at all. So unless I either test it and confirm it or look at the libusb code there's no obvious way of knowing if it sets errno at all.

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You are right, looking at the code, libusb_open() doesn't set errno. The simplest way I can think of is use non-zero return value (one of LIBUSB_ERROR*) and libusb_error_name.

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