Hello Friends,
I commented out below lines in hciattach.c and output is something like
below.
[ATH_INFO] (external/bluetooth/bluez/tools/hciattach.c) <init_uart>: Serial
port is opened
[ATH_INFO] (external/bluetooth/bluez/tools/hciattach.c) <init_uart>: Port
settings is gotten
[ATH_INFO] (external/bluetooth/bluez/tools/hciattach.c) <init_uart>: Port
settings is set
[ATH_INFO] (external/bluetooth/bluez/tools/hciattach.c) <init_uart>: Initial
baudrate is set
[ATH_INFO] (external/bluetooth/bluez/tools/hciattach.c) <init_uart>: Break
is sent
[ATH_INFO] (external/bluetooth/bluez/tools/hciattach.c) <init_uart>: Actual
baud rate is set
[ATH_INFO] (external/bluetooth/bluez/tools/hciattach.c) <init_uart>: Line
discipline is set
[ATH_INFO] (external/bluetooth/bluez/tools/hciattach.c) <init_uart>: Ioctl
device is set
[ATH_INFO] (external/bluetooth/bluez/tools/hciattach.c) <init_uart>: u->post
is loaded
Commented out lines given below:
if( u->init && u->init(fd, u, &ti)<0)
return -1;
So the execution flow in hciattach.c is not going into hciattach_ti.c
Any idea what* if( u->init && u->init(fd, u, &ti)<0)* does and how to solve
this issue?
Thanks,
Parth
On Wed, Aug 31, 2011 at 7:57 PM, Pavan Savoy <pavan.sa...@gmail.com> wrote:
> On Wed, Aug 31, 2011 at 9:46 PM, parth shah <parthmshah2...@gmail.com>
> wrote:
> > Hi Gil,
> >
> > Thanks for that response. Just before few minutes i tried that and i was
> > surprised to know that even after changing the baudrate i'm getting
> 8.06uS
> > pulse width.
> >
> > which means even i'm trying hciattach /dev/ttymxc1 texas 9600 noflow but
> the
> > UART packet is going out at baudrate of 115200(8.06uS).
>
> The initial baud-rate is supposed to be 115200, If the chip supports
> something else,
> then hciattach has an option to have a different initial baud-rate "-s".
>
> In this case the initial speed is supposed to be 115200 though...
> That's why you see the first command - which is read chip version goes
> out at 115200.
>
> >
> > How can i make a change in this?
> >
> > Also how can i change settings of UART means how can i use different UART
> > then what i'm using for BT? Where to make change for that?
> >
> > Other Observation:
> > Is there any power up sequence i have to take care?
> >
> > Our Power up sequence says " BT_EN should go high for 10ms then make it
> low
> > and time between BT_EN high and HCI_RTS should be 100 ms".
>
> I suppose it should be high for it to be powered - and go low only
> when it to be powered off.
> The RTS is for it to be able to sample Rx - this might not matter in
> this case - Since there would be some significant delay between the
> BT_EN going high and you send the chip version read via hciattach.
>
> > How can i provide such small delays from U-boot?
> >
> > Thanks and Regards,
> > Parth
> >
> >
> >
> > On Wed, Aug 31, 2011 at 7:27 PM, Gil Zhaiek <gilzha...@gmail.com> wrote:
> >>
> >> One more thing - try a different baud rate (using a different bts
> >> file).
> >> Try 115200 bts - because you see that this works.
> >>
> >> Gil
> >>
> >> On Aug 30, 11:42 pm, parth shah <parthmshah2...@gmail.com> wrote:
> >> > Hi Pavan,
> >> >
> >> > We are using imx515 platform from freescale.
> >> >
> >> > We have pulled up connected with BT_EN with 1.8V. and BT_EN is
> connected
> >> > to
> >> > GPIO.
> >> >
> >> > We are making sure that before any BT activity BT_EN should go high.
> >> >
> >> > Is there any other reason?
> >> >
> >> > Thanks,
> >> > Parth
> >> >
> >> >
> >> >
> >> >
> >> >
> >> >
> >> >
> >> > On Tue, Aug 30, 2011 at 7:31 PM, Pavan Savoy <pavan.sa...@gmail.com>
> >> > wrote:
> >> > > On Tue, Aug 30, 2011 at 9:26 PM, parth shah <
> parthmshah2...@gmail.com>
> >> > > wrote:
> >> > > > Hello Friends,
> >> >
> >> > > > I'm using WL1271 WIFI/BT module.
> >> >
> >> > > > I'm getting below output while running hciattach /dev/ttymxc1
> texas
> >> > > 30000000
> >> >
> >> > > > [ATH_INFO] (external/bluetooth/bluez/tools/hciattach.c)
> <init_uart>:
> >> > > Serial
> >> > > > port is opened
> >> > > > [ATH_INFO] (external/bluetooth/bluez/tools/hciattach.c)
> <init_uart>:
> >> > > > Port
> >> > > > settings is gotten
> >> > > > [ATH_INFO] (external/bluetooth/bluez/tools/hciattach.c)
> <init_uart>:
> >> > > > Port
> >> > > > settings is set
> >> > > > [ATH_INFO] (external/bluetooth/bluez/tools/hciattach.c)
> <init_uart>:
> >> > > Initial
> >> > > > baud rate is set
> >> > > > [ATH_INFO] (external/bluetooth/bluez/tools/hciattach.c)
> <init_uart>:
> >> > > Break
> >> > > > is sent
> >> > > > Initialization timed out.
> >> >
> >> > > What platform is this ?
> >> > > Have you powered the BT chip ? These chips tend to have a
> >> > > BT_EN/NShutDown gpio which needs to be pulled up for it to be
> powered
> >> > > on.
> >> >
> >> > > > I have Firmware loaded at /lib/firmware/TIInit.... and BT_EN is
> high
> >> > > before
> >> > > > running hciattach
> >> >
> >> > > > Any idea why does it happen? Thanks in advance.
> >> >
> >> > > > Thanks,
> >> > > > Parth
> >> >
> >> > > > --
> >> > > > unsubscribe: android-kernel+unsubscr...@googlegroups.com
> >> > > > website:http://groups.google.com/group/android-kernel
> >> >
> >> > > --
> >> > > --Pavan Savoy
> >> >
> >> > > --
> >> > > unsubscribe: android-kernel+unsubscr...@googlegroups.com
> >> > > website:http://groups.google.com/group/android-kernel
> >>
> >> --
> >> unsubscribe: android-kernel+unsubscr...@googlegroups.com
> >> website: http://groups.google.com/group/android-kernel
> >
> > --
> > unsubscribe: android-kernel+unsubscr...@googlegroups.com
> > website: http://groups.google.com/group/android-kernel
>
>
>
> --
> --Pavan Savoy
>
> --
> unsubscribe: android-kernel+unsubscr...@googlegroups.com
> website: http://groups.google.com/group/android-kernel
>
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