Not sure about the voltage. I'm running mine at 5v and they are working consistently. Could it be heat? I would think you'd be generating excess heat at 7v. Maybe someone else on the board has experience with this.

----- Original Message ----
From: Mark Ahlenius <m_ahlenius@comcast.net>
To: General mailing list for gumstix users. <gumstix-users@lists.sourceforge.net>
Sent: Friday, December 7, 2007 8:21:03 PM
Subject: Re: [Gumstix-users] Bluetooth services problem- help please

I just had it working again - and then the next time I booted it did not
include the rfcomm processes and the pand one.  But I think I might have
figured this out.  I could be way off on this, but it might be a voltage
supply problem in my circuitry.

I was using a battery pack before with a 5 volt regulator chip.  Some of
my other circuitry needs 5 v and 6-7 volts as well.  So I was using a
power supply for the time being. My regulator was heating up a bit so I
lowered my input voltage to 7.0v dc.  I rebooted after changing the
voltage and there was no rfcomm processes nor pand.  So I raised the
voltage and wala, its working again.

Maybe the BT circuitry on the Verdex BT is very sensitive to a minimum
level?

'mark

Mark Young wrote:
> Try "sdptool browse local" from your gumstix prompt and see if your
> rfcomm service is running. You should see something like this -
>
> Browsing FF:FF:FF:00:00:00 ...
> Service Name: Serial Port
> Service Description: COM Port
> Service RecHandle: 0x10000
> Service Class ID List:
>  "Serial Port" (0x1101)
> Protocol Descriptor List:
>  "L2CAP" (0x0100)
>  "RFCOMM" (0x0003)
>    Channel: 1
> Language Base Attr List:
>  code_ISO639: 0x656e
>  encoding:    0x6a
>  base_offset: 0x100
> Profile Descriptor List:
>  "Serial Port" (0x1101)
>    Version: 0x0100
>
> If that checks out, make sure you're providing the correct pin when
> you "add" your Gumstix on the Windows side (I'm assuming its a Windows
> PC).
>
> ----- Original Message ----
> From: Donny George <donny008@gmail.com>
> To: General mailing list for gumstix users.
> <gumstix-users@lists.sourceforge.net>
> Sent: Friday, December 7, 2007 5:38:00 PM
> Subject: Re: [Gumstix-users] Bluetooth services problem- help please
>
> i am not very experienced in linux either but i have working one
> gumstix with linux over last few weeks, so i can try out. but i warn u
> i am not an expert unlike many others who r there in the forum
>
> as i understand the serial port error- did u specify the correct
> serial port. did u modify the file with the port information.
>
> and seeing the log that since u get the gumstix login - wat happens
> after this, can u type in anything or is it not possible
>
> donny
>
> On Dec 7, 2007 11:26 PM, Mark Ahlenius < m_ahlenius@comcast.net
> <mailto:m_ahlenius@comcast.net>> wrote:
>
>    Hi,
>
>    I cannot make a serial port connection from my pc to my verdex board.
>
>    On my PC I can see the gumstix, and its name, but when I double
>    click on
>    the icon to open a connection to "Serial port on Gumstix", I get a
>    dialog box on the PC - "The serial port connection failed: Service not
>    found"
>
>    Anyone give me some clues as to what to look for on the gumstix
>    via the
>    console to see what might be wrong? There are a couple of errors
>    printed
>    out below during bootup, but not sure if they have anything to do with
>    this type of service with BT. Sorry, I am not that experienced with
>    Linux services
>
>    thanks!
>
>    'mark
>    ---
>
>    On bootup, I get the following:
>
>    U-Boot 1.2.0 (May 16 2007 - 11:17:32) - PXA270@400 MHz - 1407
>
>    *** Welcome to Gumstix ***
>
>    DRAM: 64 MB
>    Flash: 16 MB
>    Using default environment
>
>    SMC91C1111-0
>    Net: SMC91C1111-0
>    Hit any key to stop autoboot: 0
>    Instruction Cache is ON
>    Copying kernel to 0xa2000000 from 0x00f00000 (length
>    0x00100000)...done
>    ## Booting image at a2000000 ...
>    Image Name: uImage
>    Image Type: ARM Linux Kernel Image (uncompressed)
>    Data Size: 858700 Bytes = 838.6 kB
>    Load Address: a0008000
>    Entry Point: a0008000
>    OK
>
>    Starting kernel ...
>
>    Linux version 2.6.21gum (craig@azazel) (gcc version 4.1.1) #4 Wed
>    May 16
>    15:09:1
>    7 PDT 2007
>    CPU: XScale-PXA270 [69054117] revision 7 (ARMv5TE), cr=0000397f
>    Machine: The Gumstix Platform
>    Memory policy: ECC disabled, Data cache writeback
>    Run Mode clock: 208.00MHz (*16)
>    Turbo Mode clock: 416.00MHz (*2.0, active)
>    Memory clock: 104.00MHz (/2)
>    System bus clock: 104.00MHz
>    CPU0: D VIVT undefined 5 cache
>    CPU0: I cache: 32768 bytes, associativity 32, 32 byte lines, 32 sets
>    CPU0: D cache: 32768 bytes, associativity 32, 32 byte lines, 32 sets
>    Built 1 zonelists. Total pages: 16256
>    Kernel command line: console=ttyS0,115200n8 root=1f01 rootfstype=jffs2
>    reboot=co
>    ld,hard
>    PID hash table entries: 256 (order: 8, 1024 bytes)
>    Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
>    Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
>    Memory: 64MB = 64MB total
>    Memory: 63104KB available (1596K code, 165K data, 68K init)
>    Mount-cache hash table entries: 512
>    CPU: Testing write buffe
>    NET: Registered protocol family 16
>    NET: Registered protocol family 2
>    Time: pxa_timer clocksource has been installed.
>    IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
>    TCP established hash table entries: 2048 (order: 2, 16384 bytes)
>    TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
>    TCP: Hash tables configured (established 2048 bind 2048)
>    TCP reno registered
>    JFFS2 version 2.2. (NAND) (SUMMARY) (C) 2001-2006 Red Hat, Inc.
>    io scheduler noop registered
>    io scheduler cfq registered (default)
>    pxa2xx-uart.0: ttyS0 at MMIO 0x40100000 (irq = 22) is a FFUART
>    pxa2xx-uart.1: ttyS1 at MMIO 0x40200000 (irq = 21) is a BTUART
>    pxa2xx-uart.2: ttyS2 at MMIO 0x40700000 (irq = 20) is a STUART
>    Probing Gumstix Flash ROM at physical address 0x00000000 (16-bit
>    bankwidth)
>    Gumstix Flash ROM: Found 1 x16 devices at 0x0 in 16-bit bank
>    Intel/Sharp Extended Query Table at 0x010A
>    Intel/Sharp Extended Query Table at 0x010A
>    Intel/Sharp Extended Query Table at 0x010A
>    Intel/Sharp Extended Query Table at 0x010A
>    Intel/Sharp Extended Query Table at 0x010A
>    Using buffer write method
>    cfi_cmdset_0001: Erase suspend on write enabled
>    Using static partitions on Gumstix Flash ROM
>    Creating 3 MTD partitions on "Gumstix Flash ROM":
>    0x00000000-0x00040000 : "Bootloader"
>    0x00040000-0x00f00000 : "RootFS"
>    0x00f00000-0x01000000 : "Kernel"
>    TCP cubic registered
>    XScale iWMMXt coprocessor detected.
>    VFS: Mounted root (jffs2 filesystem).
>    Freeing init memory: 68K
>    NET: Registered protocol family 1
>    Initializing random number generator... done.
>    Starting 32kHz clock...Settled
>    Initializing GPIO pins 42, 43, 44, 45...Starting Bluetooth
>    subsystem:Trying baud
>    rate 115200...
>    Got response after reset... gobbling
>    Error reading response: Success
>    Trying baud rate 921600...
>    Got response after reset... gobbling
>    Detected bluetooth module at 921600 baud
>    Got: status=0x00, hci_ver=0x03, hci_rev=0x62b9, lmp_ver=0x03,
>    manuf=0x0009, lmp_
>    subver=0x62b9
>    Bluetooth: Core ver 2.11
>    NET: Registered protocol family 31
>    Bluetooth: HCI device and connection manager initialized
>    Bluetooth: HCI socket layer initialized
>    Bluetooth: HCI UART driver ver 2.2
>    Bluetooth: HCI H4 protocol initialized
>    ttyS1 hcidBluetooth: L2CAP ver 2.8
>    Bluetooth: L2CAP socket layer initialized
>    sdpd rfcommBluetooth: RFCOMM socket layer initialized
>    Bluetooth: RFCOMM TTY layer initialized
>    Bluetooth: RFCOMM ver 1.8
>    Bluetooth: BNEP (Ethernet Emulation) ver 1.2
>    pand.
>    Starting network...
>    udhcpc (v0.9.9-pre) started
>    Dec 31 16:00:18 udhcpc[228]: udhcpc (v0.9.9-pre) started
>    smc91x: not found (-19).
>    m
>    Dec 31 16:00:18 udhcpc[
>    usbcore: registered new interface driver usbfs
>    usbcore: registered new interface driver hub
>    usbcore: registered new device driver usb
>    usbcore: registered new interface driver rtusb
>    Error for wireless request "Set ESSID" (8B1A) :
>    SET failed on device rausb0 ; No such device.
>    Dec 31 16:00:19 modprobe: FATAL: Error running install command for
>    cfio
>    Error for wireless request "Set ESSID" (8B1A) :
>    SET failed on device mwlan0 ; No such device.
>    Starting Rendezvous:
>    NET: Registered protocol family 10
>    Mobile IPv6
>    Starting dropbear sshd: OK
>    Starting httpd...
>    insmod /lib/modules/2.6.21gum/kernel/sound/core/snd-page-alloc.ko
>    insmod /lib/modules/2.6.21gum/kernel/sound/soundcore.ko
>    insmod /lib/modules/2.6.21gum/kernel/sound/core/snd.ko
>    insmod /lib/modules/2.6.21gum/kernel/sound/core/snd-timer.ko
>    insmod /lib/modules/2.6.21gum/kernel/sound/core/snd-pcm.ko
>    insmod /lib/modules/2.6.21gum/kernel/sound/arm/snd-pxa2xx-pcm.ko
>    insmod /lib/modules/2.6.21gum/kernel/sound/ac97_bus.ko
>    insmod /lib/modules/2.6.21gum/kernel/sound/pci/ac97/snd-ac97-codec.ko
>    insmod /lib/modules/2.6.21gum/kernel/sound/arm/snd-pxa2xx-ac97.ko
>    pxa2xx_ac97_reset: cold reset timeout (GSR=0x0)
>    insmod /lib/modules/2.6.21gum/kernel/sound/core/oss/snd- mixer-oss.ko
>    insmod /lib/modules/2.6.21gum/kernel/sound/core/oss/snd-pcm-oss.ko
>
>    Welcome to the Gumstix Linux Distribution!
>
>    gumstix login:
>
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