[gentoo-user] USBasp recognized/not recognized...what?

[gentoo-user] USBasp recognized/not recognized...what?

[tuxic]

Hi,

for some third party USBasp (ISP flash programmer) clones I got
some dubious situation:

These devices mainly consists of an ATmega 8A AU, which USB ports
connect to a USB connector and smoe GPIOs are used to flash
an attached microcontroller via ISP.

That's the theory.

Now I attach such a device to my Gentoo Linux box.

dmesg saus:
[ 1919.948832] usb 7-4: new low-speed USB device number 7 using ohci-pci
[ 1920.108797] usb 7-4: New USB device found, idVendor=16c0, idProduct=05dc
[ 1920.108805] usb 7-4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 1920.108809] usb 7-4: Product: USBasp
[ 1920.108812] usb 7-4: Manufacturer: www.fischl.de

which looks ok to me.

lsusb says:
Bus 007 Device 007: ID 16c0:05dc Van Ooijen Technische Informatica shared ID for use with libusb
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass          255 Vendor Specific Class
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0         8
  idVendor           0x16c0 Van Ooijen Technische Informatica
  idProduct          0x05dc shared ID for use with libusb
  bcdDevice            1.02
  iManufacturer           1 www.fischl.de
  iProduct                2 USBasp
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           18
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower               50mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass         0 
      bInterfaceSubClass      0 
      bInterfaceProtocol      0 
      iInterface              0 
Device Status:     0x0000
  (Bus Powered)

which also looks not that bad.

...but...I get no device under /dev/
like /dev/ttyUSB0 or such...

there only an entry here
ls -l /dev/bus/usb/007/007
crw-rw-r-- 1 root usb 189, 774 2017-08-30 17:56 007

Do I need more coffee or do I need more....what?

Any help is much appreciated!

Cheers
Meino

Re: [gentoo-user] USBasp recognized/not recognized...what?

[tuxic]

Hi,

ok, I fixed it myself...an udev-rule was missing a '"'...
(and I am missing a coffee...)

Sorry for the false alert...!
Cheers
Meino




On 08/30 03:59, tuxic@posteo.de wrote:
> Hi,
> 
> for some third party USBasp (ISP flash programmer) clones I got
> some dubious situation:
> 
> These devices mainly consists of an ATmega 8A AU, which USB ports
> connect to a USB connector and smoe GPIOs are used to flash
> an attached microcontroller via ISP.
> 
> That's the theory.
> 
> Now I attach such a device to my Gentoo Linux box.
> 
> dmesg saus:
> [ 1919.948832] usb 7-4: new low-speed USB device number 7 using ohci-pci
> [ 1920.108797] usb 7-4: New USB device found, idVendor=16c0, idProduct=05dc
> [ 1920.108805] usb 7-4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
> [ 1920.108809] usb 7-4: Product: USBasp
> [ 1920.108812] usb 7-4: Manufacturer: www.fischl.de
> 
> which looks ok to me.
> 
> lsusb says:
> Bus 007 Device 007: ID 16c0:05dc Van Ooijen Technische Informatica shared ID for use with libusb
> Device Descriptor:
>   bLength                18
>   bDescriptorType         1
>   bcdUSB               1.10
>   bDeviceClass          255 Vendor Specific Class
>   bDeviceSubClass         0 
>   bDeviceProtocol         0 
>   bMaxPacketSize0         8
>   idVendor           0x16c0 Van Ooijen Technische Informatica
>   idProduct          0x05dc shared ID for use with libusb
>   bcdDevice            1.02
>   iManufacturer           1 www.fischl.de
>   iProduct                2 USBasp
>   iSerial                 0 
>   bNumConfigurations      1
>   Configuration Descriptor:
>     bLength                 9
>     bDescriptorType         2
>     wTotalLength           18
>     bNumInterfaces          1
>     bConfigurationValue     1
>     iConfiguration          0 
>     bmAttributes         0x80
>       (Bus Powered)
>     MaxPower               50mA
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       0
>       bNumEndpoints           0
>       bInterfaceClass         0 
>       bInterfaceSubClass      0 
>       bInterfaceProtocol      0 
>       iInterface              0 
> Device Status:     0x0000
>   (Bus Powered)
> 
> which also looks not that bad.
> 
> ...but...I get no device under /dev/
> like /dev/ttyUSB0 or such...
> 
> there only an entry here
> ls -l /dev/bus/usb/007/007
> crw-rw-r-- 1 root usb 189, 774 2017-08-30 17:56 007
> 
> Do I need more coffee or do I need more....what?
> 
> Any help is much appreciated!
> 
> Cheers
> Meino
> 
> 
>