BBB-blank-debian-8.6-console-armhf-2016-12-18-2gb image doesn't show up as a serial device
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Jeremy Herbert
Dec 22, 2016, 8:05:49 AM12/22/16
to BeagleBoard
Hi,
I've just installed this image ( https://rcn-ee.com/rootfs/bb.org/testing/2016-12-18/console/BBB-blank-debian-8.6-console-armhf-2016-12-18-2gb.img.xz ) on a BBB rev C, and a BBB with the 2GB flash. Both are behaving the same. They show up as an ethernet device, but not as a serial port. lsusb on the host confirms that they are not behaving as a serial port:
Bus 003 Device 030: ID 0525:a4a2 Netchip Technology, Inc. Linux-USB Ethernet/RNDIS GadgetDevice Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 2 Communications bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x0525 Netchip Technology, Inc. idProduct 0xa4a2 Linux-USB Ethernet/RNDIS Gadget bcdDevice 4.04 iManufacturer 1 BeagleBoard.org iProduct 2 BeagleBoneBlack iSerial 3 2513BBBK4941 bNumConfigurations 2OTG Descriptor: bLength 3 bDescriptorType 9 bmAttributes 0x03 SRP (Session Request Protocol) HNP (Host Negotiation Protocol) Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 78 bNumInterfaces 2 bConfigurationValue 2 iConfiguration 0 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 500mA Interface Association: bLength 8 bDescriptorType 11 bFirstInterface 0 bInterfaceCount 2 bFunctionClass 2 Communications bFunctionSubClass 6 Ethernet Networking bFunctionProtocol 0 iFunction 6 RNDIS Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 2 Communications bInterfaceSubClass 2 Abstract (modem) bInterfaceProtocol 255 Vendor Specific (MSFT RNDIS?) iInterface 4 RNDIS Communications Control CDC Header: bcdCDC 1.10 CDC Call Management: bmCapabilities 0x00 bDataInterface 1 CDC ACM: bmCapabilities 0x00 CDC Union: bMasterInterface 0 bSlaveInterface 1 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0008 1x 8 bytes bInterval 9 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 10 CDC Data bInterfaceSubClass 0 Unused bInterfaceProtocol 0 iInterface 5 RNDIS Ethernet Data Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x01 EP 1 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 91 bNumInterfaces 2 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 500mA Interface Association: bLength 8 bDescriptorType 11 bFirstInterface 0 bInterfaceCount 2 bFunctionClass 2 Communications bFunctionSubClass 6 Ethernet Networking bFunctionProtocol 0 iFunction 11 CDC ECM Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 2 Communications bInterfaceSubClass 6 Ethernet Networking bInterfaceProtocol 0 iInterface 8 CDC Ethernet Control Model (ECM) CDC Header: bcdCDC 1.10 CDC Union: bMasterInterface 0 bSlaveInterface 1 CDC Ethernet: iMacAddress 9 9059af55826a bmEthernetStatistics 0x00000000 wMaxSegmentSize 1514 wNumberMCFilters 0x0000 bNumberPowerFilters 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0010 1x 16 bytes bInterval 9 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 10 CDC Data bInterfaceSubClass 0 Unused bInterfaceProtocol 0 iInterface 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 1 bNumEndpoints 2 bInterfaceClass 10 CDC Data bInterfaceSubClass 0 Unused bInterfaceProtocol 0 iInterface 10 CDC Ethernet Data Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x01 EP 1 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0Device Qualifier (for other device speed): bLength 10 bDescriptorType 6 bcdUSB 2.00 bDeviceClass 2 Communications bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 bNumConfigurations 2Device Status: 0x0000 (Bus Powered)I have two BBGW which appear fine as ttyACM0 and ttyACM1, but I haven't reflashed them from the stock image. Is there a way to enable this on the BBB image?
Thanks,
Jeremy
Jeremy Herbert
Dec 22, 2016, 8:58:31 AM12/22/16
to BeagleBoard
Just as an update, unloading the g_ether and loading g_serial results in a working serial port at /dev/ttyGS0. Of course, the usb ethernet doesn't work after this, and the modules can't be loaded at the same time.
# modprobe g_serial
modprobe: ERROR: could not insert 'g_serial': No such device
# rmmod g_ether
# modprobe g_serial
# systemctl start serial...@ttyGS0.service
resulting host lsusb:
Bus 003 Device 033: ID 0525:a4a7 Netchip Technology, Inc. Linux-USB Serial Gadget (CDC ACM mode)
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 2 Communications
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x0525 Netchip Technology, Inc.
idProduct 0xa4a7 Linux-USB Serial Gadget (CDC ACM mode)
bcdDevice 4.04
iManufacturer 1 Linux 4.4.39-ti-r75 with musb-hdrc
iProduct 2 Gadget Serial v2.4
iSerial 0
bNumConfigurations 1
OTG Descriptor:
bLength 3
bDescriptorType 9
bmAttributes 0x03
SRP (Session Request Protocol)
HNP (Host Negotiation Protocol)
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 78
bNumInterfaces 2
bConfigurationValue 2
iConfiguration 4 CDC ACM config
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 500mA
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 0
bInterfaceCount 2
bFunctionClass 2 Communications
bFunctionSubClass 2 Abstract (modem)
bFunctionProtocol 1 AT-commands (v.25ter)
iFunction 7 CDC Serial
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 2 Communications
bInterfaceSubClass 2 Abstract (modem)
bInterfaceProtocol 1 AT-commands (v.25ter)
iInterface 5 CDC Abstract Control Model (ACM)
CDC Header:
bcdCDC 1.10
CDC Call Management:
bmCapabilities 0x00
bDataInterface 1
CDC ACM:
bmCapabilities 0x02
line coding and serial state
CDC Union:
bMasterInterface 0
bSlaveInterface 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x000a 1x 10 bytes
bInterval 9
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 10 CDC Data
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0
iInterface 6 CDC ACM Data
bNumConfigurations 1
Device Status: 0x0000
(Bus Powered)
Thanks,
Jeremy
Robert Nelson
Dec 22, 2016, 10:25:33 AM12/22/16
to Beagle Board, jerem...@gmail.com
On Thu, Dec 22, 2016 at 7:58 AM, Jeremy Herbert <jerem...@gmail.com> wrote:
> Just as an update, unloading the g_ether and loading g_serial results in a
> working serial port at /dev/ttyGS0. Of course, the usb ethernet doesn't work
> after this, and the modules can't be loaded at the same time.
You can see the logic here:
> Just as an update, unloading the g_ether and loading g_serial results in a
> working serial port at /dev/ttyGS0. Of course, the usb ethernet doesn't work
> after this, and the modules can't be loaded at the same time.
https://github.com/RobertCNelson/boot-scripts/blob/master/boot/am335x_evm.sh#L389-L424
g_multi requires a file option, and the console image lack's a 2nd
partition, img file etc... So it defaults to g_ether.
Moving to configfs usb will fix this but i'm just starting to figure
configfs out..
https://github.com/RobertCNelson/boot-scripts/blob/master/boot/omap3_beagle.sh#L44-L86
So till then, grab the "iot" image..
Regards,
--
Robert Nelson
https://rcn-ee.com/
Jeremy Herbert
Dec 22, 2016, 10:36:49 AM12/22/16
to BeagleBoard, jerem...@gmail.com
Hi Robert,
Thanks, that makes sense. Will reflash with the iot image.
Thanks,
Jeremy
lorriane...@yahoo.com
Dec 22, 2016, 11:21:26 AM12/22/16
to beagl...@googlegroups.com
--------------------------------------------
On Thu, 12/22/16, Jeremy Herbert <jerem...@gmail.com> wrote:
Subject: Re: [beagleboard] Re: BBB-blank-debian-8.6-console-armhf-2016-12-18-2gb image doesn't show up as a serial device
To: "BeagleBoard" <beagl...@googlegroups.com>
Cc: jerem...@gmail.com
Date: Thursday, December 22, 2016, 5:36 PM
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