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On Thu, Sep 28, 2017 at 07:39:58PM +0200, tuxic@××××××.de wrote: |
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> The interesting thing is: I have a pololu avr programmer (v20, an |
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> ISP-programmer it is), which uses also /dev/ttyACM<n>...and that |
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> one works fine. I plugged it in simultanously to ensure all drivers |
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> get loaded...and then I plugged in the Digispark...and udec does |
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> nothing. |
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> |
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> Or do I misinterpret here something? |
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Multiple different drivers may create /dev/ttyACM<n> nodes for devices. |
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For example, on my system I have multiple /dev/ttyUSB<n> nodes. Some of |
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them are created by cdc_ether driver, that's my LTE modem. When I plug |
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in a popular arduino clone that uses ch341 usb chip, it needs |
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a different driver called ch341. |
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You probably need to build your kernel with CONFIG_USB_ACM compiled in |
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or enabled as a module. |
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-- |
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mlen |
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