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Date:      Sat, 11 May 2013 15:44:43 -0700
From:      Tim Kientzle <kientzle@acm.org>
To:        hiren panchasara <hiren.panchasara@gmail.com>
Cc:        freebsd-arm <freebsd-arm@freebsd.org>
Subject:   Re: Connecting to Beablebone
Message-ID:  <DABEE6F7-BC8C-4D14-9515-1500AE744AE6@acm.org>
In-Reply-To: <CALCpEUHMYvtnH-A4M2xDNiRqTGsyF5fYEnQo8nNY-9UxZCEdFw@mail.gmail.com>
References:  <CALCpEUGGUjZkciUARw-54qEnbN%2BFequ_iQ46gEcw4G=Td%2BMsiw@mail.gmail.com> <CAGtf9xNs1M=Jz=G2EMNyeowzD33sUEZ3ukUnCe_2sAAhXyMk-Q@mail.gmail.com> <CALCpEUG2gA1a=qxHTYg7utsjePFBY4b%2B%2BHuJdkvfsU1zqAOGuw@mail.gmail.com> <20130510024232.GA10543@thinkbsd.divinix.org> <CALCpEUGKYkOcGRTdVwvZoO1gm23XmnVV3SwkNzJVXvnBMK%2BM=g@mail.gmail.com> <CALCpEUE26fR-oXTGiG5yoNksoyqnUx7N%2BoTWuheO9P-Kfbn-dw@mail.gmail.com> <CD9C587D-5124-46E5-9A12-FE92B3F03139@acm.org> <CALCpEUHMYvtnH-A4M2xDNiRqTGsyF5fYEnQo8nNY-9UxZCEdFw@mail.gmail.com>

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On May 11, 2013, at 1:30 PM, hiren panchasara wrote:

> On Sat, May 11, 2013 at 9:11 AM, Tim Kientzle <kientzle@acm.org> =
wrote:
>>=20
>> On May 11, 2013, at 12:59 AM, hiren panchasara wrote:
>>=20
>>> I found one of these:
>>> =
http://www.amazon.com/gp/product/B006JKNWLE/ref=3Doh_details_o06_s00_i00?i=
e=3DUTF8&psc=3D1
>>>=20
>>> And I've connected it to laptop as shown in:
>>> http://www.strugglingcoder.info/pics/bb1.jpg
>>> and on beaglebone as shown in: =
http://www.strugglingcoder.info/pics/bb2.jpg

There's no DNS entry for struggling.dyndns-home.com

>>> As per the schematic info I derived:
>>> Pin 1: GND
>>> Pin 4: RX
>>> Pin 5: TX
>>>=20
>>> I can still not see anything after connecting to "cu -l cuaU0".
>>=20
>> You probably need to set the speed:
>>=20
>>  cu -s 115200 -l cuaU0
>=20
> Doesn't seem to help. I've been following instructions at
> https://wiki.freebsd.org/FreeBSD/arm/BeagleBoneBlack


I have noticed with the Adafruit cable that the serial connection
sometimes just stops when I reboot or cycle the power.

The following seems to reliably restart the serial port:
   * Leave the serial cable connected.
   * Remove power from the BBB
   * Press and hold the boot switch
   * Plug power back in while holding the boot switch.
   * Count to three and release the boot switch

Finally, of course, are you sure that your cable is
supported by your laptop?   USB-to-serial adapters
seem to be surprisingly variable.

Tim






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