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Re: [Gumstix-users] problems second serial port of gumstix....
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From: Sir G. \(Terra\) <gra...@te...> - 2005-07-18 19:26:44
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Hi Cryril,
Yes. You scripts works. But now there is other problem. If the bluetooth =
script S30bluetooth is executed in the boot the ttyS3 don=B4t work.
We try to rename the S99SpecialConfig to S29SpecialConfig to execute =
before the S30bluetooth but the results is the same.
If we rename the S30bluetooth to s30bluetooth (desactivate this script) =
the /dev/ttyS3 works perfect.
The case is that we need the ttyS3 to connect a serial bluetooth module =
(support by Bluez) in H4 format (noflow). In the Red Hat this module =
works
perfect but in the gumstix we don=B4t know how the S30bluetooth must be =
configurated.
Any idea....?
Regards,
Sir Graham.
----- Original Message -----=20
From: Cyril Bazin=20
To: gum...@li...=20
Sent: Monday, July 18, 2005 7:46 PM
Subject: Re: [Gumstix-users] problems second serial port of =
gumstix....
On 7/18/05, Sir Graham (Terra) <gra...@te...> wrote:
Hi Cryril,
Here you are.
# cat /proc/gpio/GPIO4[6789]
46 GPIO in set
47 GPIO in set
48 AF2 in set
49 AF2 out set
Very bad!=20
Neither ttyS2 nor ttyS3 are configured correctly!=20
It's normal that you don't have anything on your output
=20
The correct configuration would be:
# cat /proc/gpio/GPIO4[6789]
46 AF2 in ...
47 AF1 out ...
48 AF1 out ...
49 AF1 in ...
The GPIO 46-47 are for ttyS2, 48-49 are for ttyS3.
Set them all correctly using the magic formula:=20
modprobe proc_gpio
echo "AF2 in" >/proc/gpio/GPIO46
echo "AF1 out" >/proc/gpio/GPIO47
stty -F /dev/ttyS2 -ixon speed 115200
echo "AF1 out" >/proc/gpio/GPIO48
echo "AF1 in" >/proc/gpio/GPIO49
stty -F /dev/ttyS3 -ixon speed 115200
A better approach is to create a file in "/etc/init.d" named =
"S99SpecialConfig" with the following content:
#------------------------------------------------------------
#
# Special config
#
start() {
modprobe proc_gpio
echo "AF2 in" >/proc/gpio/GPIO46
echo "AF1 out" >/proc/gpio/GPIO47
stty -F /dev/ttyS2 -ixon speed 115200
echo "AF1 out" >/proc/gpio/GPIO48
echo "AF1 in" >/proc/gpio/GPIO49
stty -F /dev/ttyS3 -ixon speed 115200
}
stop() {
}
restart() {
stop
start
}
case "$1" in
start)
start
;;
stop)
stop
;;
restart|reload)
restart
;;
*)
echo $"Usage: $0 {start|stop|restart}"
exit 1
esac
exit $?
#-------------------------------------------------
That what we made on our gumstix and it work perfectly. Since that, =
we don't worry about ttyS*.
Don't hesitate to tell us if it works or not. But, it should work.
If it doesn't verify the state of your GPIOs.
> we have the Build 516. Where are the configuration of the Second =
port, what is this configuration... and Why don=B4t work like the the =
first port?
That's a classical GPIO problem, the processor of the gumstix : Intel =
PXA255 can do different things using the same input/output.
For example, it can do bluetooth I/O or Serial I/O on the same =
connector. So, you need to configure by hand if you want the first or =
the second.=20
We will connect a bluetooth module to the second port.... We try =
this module in a red hat with bluez and works perfect. But I can=B4t =
configurate
the second port to works with bluez.... =BF?
After looking at your GPIO configuration the verdict is: Hopefully, it =
doesn't work! Else the problem would be very strange.
To test, you should try to communicate with a PC using hyperterminal =
or minicom.
Regards,
Sir Graham.
----- Original Message -----=20
From: Cyril Bazin=20
To: gum...@li...=20
Sent: Monday, July 18, 2005 1:55 PM=20
Subject: Re: [Gumstix-users] problems second serial port of =
gumstix....
Could you show us a copy of the state of your GPIO?
From memory, use this command:
cat /proc/gpio/GPIO4[6789]
And a copy of the state of your ttys (from /proc/driver/...) =
before and after sending these commands:
echo "FooBarBaz" >/dev/ttyS2
echo "FooBarBaz" >/dev/ttyS3
Cyril
On 7/15/05, Sir Graham (Terra) <gra...@te...> wrote:=20
Hi Cyril,
This not work too. =20
Hwat happend with the second port of Serial ? any of this =
works.....
Regards,
Sir Graham.
----- Original Message -----=20
From: Cyril Bazin=20
To: gum...@li...=20
Sent: Friday, July 15, 2005 2:02 PM=20
Subject: Re: [Gumstix-users] problems second serial port of =
gumstix....
I fogot that we added the patch for ttyS3 (look at =
http://www.gumstix.org/tikiwiki/tiki-index.php?page=3DTips+and+Tricks#att=
achments )
On 7/15/05, Cyril Bazin <cyr...@gm...> wrote:=20
Hello,
To configure the serial port ttyS2 and ttyS3, we used these =
command:
modprobe proc_gpio
echo "AF2 in" >/proc/gpio/GPIO46
echo "AF1 out" >/proc/gpio/GPIO47
stty -F /dev/ttyS2 -ixon speed 115200
echo "AF1 out" >/proc/gpio/GPIO48
echo "AF1 in" >/proc/gpio/GPIO49
stty -F /dev/ttyS3 -ixon speed 115200
(Replace the speed )
For more informations about GPIO, read =
"http://www.intel.com/design/pca/prodbref/252780.htm " around the page =
107.
Cyril=20
On 7/15/05, Florian Loitsch <gu...@fl... > =
wrote:=20
Verify the configuration of the relevant GPIOs too. From =
r374 on they should
be set to uart, but before you had to do it manually (see =
the tips and tricks
page of the wiki).
// florian
On Friday 15 July 2005 02:40, Craig Hughes wrote:=20
> Do you have a scope you can use to check if there are =
signals on the
> lines?
>
> C
>
> On Jul 14, 2005, at 2:49 PM, Sir Graham (Terra) wrote:
> > Hi Craig,
> >
> > We probe in this port and don=B4t work. Any idea....
> >
> > First configurate the port:
> >
> > # stty -F /dev/ttyS2 speed 115200
> >
> > make this comand
> >
> > # yes > /dev/ttyS2
> > Change the cable to the second port and dont =
work......
> >
> > With the /dev/ttyS0 works well....
> >
> > Is necessary any configuration more? It=B4s a extrange =
problem....=20
> >
> > Regards.,
> >
> > Sir Graham.
> >
> >
> >
> >
> > ----- Original Message -----
> > From: Craig Hughes
> > To: gum...@li...=20
> > Sent: Thursday, July 14, 2005 11:22 PM
> > Subject: Re: [Gumstix-users] problems second serial =
port of
> > gumstix....
> >
> >
> > Depends on the waysmall board you have -- most likely =
it's a STUART=20
> > waysmall, and then the 2nd port is ttyS2.
> >
> >
> > C
> >
> >
> > On Jul 14, 2005, at 1:33 PM, Sir Graham (Terra) wrote:
> >
> >
> > Hi,=20
> >
> > We have the gumstix without bluetooth module and =
without MMC/SD
> > card (This is the gumstix with etherstix).
> >
> > Well, we make a trys with the "second" serial port of =
Gumstix.=20
> > What port is this ttyS1, ttyS2, ttyS3?
> >
> > We try in all ports to make this operation:
> >
> > # stty -F /dev/ttyS1 speed 115200
> > # stty -F /dev/ttyS2 speed 115200=20
> > # stty -F /dev/ttyS3 speed 115200
> >
> > # yes > /dev/ttyS1 Change the cable to the other =
conector and
> > nothing....
> > # yes > /dev/ttyS2 Change the cable to the other =
conector and=20
> > nothing....
> > # yes > /dev/ttyS3 Change the cable to the other =
conector and
> > nothing....
> >
> > Any idea of the problem?
> >
> > Regards,
> > Sir Graham.
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