Hi Andrey,
Well, it took quite a while, but when I got everything just right, IT
WORKS!!! THANKS!
Take care,
-Bob
P.S. As Andrey surmised, I had not built the driver as a module. Once I
did, I had to revert the .inf file to the original value; in other
words, ignore my earlier comment about it. Seems what was happening is
the g_serial driver was loading in bulk in/out mode, which doesn't work
with Windoze; in fact, that is not how I wanted to use the device anyways.
So is it true that the acm mode is only available when loading as a module?
Another problem is this instruction in the docs:
mknod /dev/ttygserial c 127 0
Because my /dev is in the romfs, that of course won't work. I
discovered I could do that by copying an existing file in ../romfs/dev
of the distribution, then rebuilding it. Seems to work, though a "make
clean" seems to delete that. Is there a better way to do this? Feels a
bit kludgy to me.
Anyway, it works!!!
Butok Andrey-B00423 wrote:
Hi Bob
Please try to build the gadget serial driver as a module and install it
with enabled "use_acm" parameter :
insmod g_seria.ko use_acm=1
Best regards
Andrey
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Robert S. Grimes
Sent: Wednesday, February 21, 2007 1:25 AM
To: uClinux Mailing List
Subject: [uClinux-dev] Can't get Gadget Serial driver to start on
Windows XPPro
Hi,
I'm developing a uClinux-based device based on the Freescale MCF532x,
which has integral USB device peripheral. The device will interface
with a host computer via USB. The communications protocol is quite
simple, and for ease of use from the host computer's viewpoint, it would
be great if my device looks like a serial port. It would be really
fantastic if it looked like a USB/serial port adapter, such that the
host computer (Windoze, Linux, Mac, whatever) could "borrow" a suitable
driver, at least initially.
So I found the Gadget Serial (see
linux-2.6.x/Documentation/usb/gadget_serial.txt) and am attempting to
use it. I am currently using the M5329EVB board from Freescale/LogicPD,
uClinux-dist-20070130.tar.bz2 with some patches from a Freescale AppNote
(AN3408.pdf). I _think_ I've got the configuration for the kernel
correct, and everything builds okay. Here is part of the console
output:
USB-MCF532x: (HOST module) EHCI device is registered
USB-MCF532x: (OTG module) EHCI device is registered
USB-MCF532x: (OTG module) UDC device is registered
SCSI subsystem initialized
usbcore: registered new driver usbfs
usbcore: registered new driver hub
...
usbmon: debugfs is not available
MCF532x USB EHCI: is found. ID=0x5 Rev=0x41
ehci ehci.1: EHCI Host Controller
ehci ehci.1: new USB bus registered, assigned bus number 1
ehci ehci.1: irq 176, io mem 0xfc0b4000
ehci ehci.1: USB 0.0 started, EHCI 1.00, driver 10 Dec 2004
usb usb1: Product: EHCI Host Controller
usb usb1: Manufacturer: uClinux 2.6.17.1 ehci_hcd
usb usb1: SerialNumber: ehci.1
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 1 port detected
MCF532x USB EHCI: is found. ID=0x5 Rev=0x41
ehci ehci.0: EHCI Host Controller
ehci ehci.0: new USB bus registered, assigned bus number 2
ehci ehci.0: irq 175, io mem 0xfc0b0000
ehci ehci.0: USB 0.0 started, EHCI 1.00, driver 10 Dec 2004
usb usb2: Product: EHCI Host Controller
usb usb2: Manufacturer: uClinux 2.6.17.1 ehci_hcd
usb usb2: SerialNumber: ehci.0
usb usb2: configuration #1 chosen from 1 choice
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 1 port detected
ehci-mcf532x: No external transceiver!
Initializing USB Mass Storage driver...
usbcore: registered new driver usb-storage
USB Mass Storage support registered.
udc: Freescale MCF532x UDC driver version 27 October 2006 init
udc: No external transceiver!
udc: MCF532x USB Device is found. ID=0x5 Rev=0x41
gs_bind: Gadget Serial v2.0 bound
udc: mcf532x_udc: mcf532x_udc bind to driver g_serial
gs_module_init: Gadget Serial v2.0 loaded
...
Sash command shell (version 1.1.1)
/> <4> ehci.0: Unlink after no-IRQ? Controller is probably using
the wrong IRQ.
When I connect the M5329EVB to my Windows XP host computer, the latter
detects the "Gadget Serial" device, and installs the driver. Note that
in order to get this far, I had to change the following lines in the
.inf file from the documentation from:
[GSerialDeviceList]
%GSERIAL%=GSerialInstall, USB\VID_0525&PID_A4A7
to
[GSerialDeviceList]
%GSERIAL%=GSerialInstall, USB\VID_0525&PID_A4A6
Anyway, the following is output on the uClinux console:
gs_disconnect: Gadget Serial disconnected
gs_disconnect: Gadget Serial disconnected
gs_set_config: Gadget Serial configured, full speed BULK config
Which seems it is happy. However, on the Windows host I get an error,
stating that "This device cannot start. (Code 10)". I seem to be so
close, but I'm not sure where to go from here. Any ideas?!
Thanks,
-Bob
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