Gentoo Archives: gentoo-user

From: tuxic@××××××.de
To: Gentoo <gentoo-user@l.g.o>
Subject: [gentoo-user] USBasp recognized/not recognized...what?
Date: Wed, 30 Aug 2017 16:00:19
Message-Id: 20170830155957.xcganln2q6zhlzmq@solfire
1 Hi,
2
3 for some third party USBasp (ISP flash programmer) clones I got
4 some dubious situation:
5
6 These devices mainly consists of an ATmega 8A AU, which USB ports
7 connect to a USB connector and smoe GPIOs are used to flash
8 an attached microcontroller via ISP.
9
10 That's the theory.
11
12 Now I attach such a device to my Gentoo Linux box.
13
14 dmesg saus:
15 [ 1919.948832] usb 7-4: new low-speed USB device number 7 using ohci-pci
16 [ 1920.108797] usb 7-4: New USB device found, idVendor=16c0, idProduct=05dc
17 [ 1920.108805] usb 7-4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
18 [ 1920.108809] usb 7-4: Product: USBasp
19 [ 1920.108812] usb 7-4: Manufacturer: www.fischl.de
20
21 which looks ok to me.
22
23 lsusb says:
24 Bus 007 Device 007: ID 16c0:05dc Van Ooijen Technische Informatica shared ID for use with libusb
25 Device Descriptor:
26 bLength 18
27 bDescriptorType 1
28 bcdUSB 1.10
29 bDeviceClass 255 Vendor Specific Class
30 bDeviceSubClass 0
31 bDeviceProtocol 0
32 bMaxPacketSize0 8
33 idVendor 0x16c0 Van Ooijen Technische Informatica
34 idProduct 0x05dc shared ID for use with libusb
35 bcdDevice 1.02
36 iManufacturer 1 www.fischl.de
37 iProduct 2 USBasp
38 iSerial 0
39 bNumConfigurations 1
40 Configuration Descriptor:
41 bLength 9
42 bDescriptorType 2
43 wTotalLength 18
44 bNumInterfaces 1
45 bConfigurationValue 1
46 iConfiguration 0
47 bmAttributes 0x80
48 (Bus Powered)
49 MaxPower 50mA
50 Interface Descriptor:
51 bLength 9
52 bDescriptorType 4
53 bInterfaceNumber 0
54 bAlternateSetting 0
55 bNumEndpoints 0
56 bInterfaceClass 0
57 bInterfaceSubClass 0
58 bInterfaceProtocol 0
59 iInterface 0
60 Device Status: 0x0000
61 (Bus Powered)
62
63 which also looks not that bad.
64
65 ...but...I get no device under /dev/
66 like /dev/ttyUSB0 or such...
67
68 there only an entry here
69 ls -l /dev/bus/usb/007/007
70 crw-rw-r-- 1 root usb 189, 774 2017-08-30 17:56 007
71
72 Do I need more coffee or do I need more....what?
73
74 Any help is much appreciated!
75
76 Cheers
77 Meino

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Re: [gentoo-user] USBasp recognized/not recognized...what? tuxic@××××××.de