I'm struggling in read/write operation in beaglebone board. Only the read
operation done correctly If I have used TTL to USB convertor. Only the
write operation done correctly if I have used TTL cable alone. I cant
understand what will be wrong. Can anyone please help me?

On Tue, Feb 6, 2018 at 12:55 PM, <revathimr1...@gmail.com> wrote:

> Hi everyone,
>
> I'm new to beaglebone black board.I need to read/write data via UART port
> in beaglebone board.I can read the data in beaglebone board via UART1 port
> from PC. But I cant read data in PC from beaglebone board. Can anyone
> please help me to fix this issue?
>
>
> --
> On Sunday, February 19, 2012 at 12:57:47 AM UTC+5:30, Gregg D. Harrington
> wrote:
>>
>> Hello everyone. I posted earlier about something and everyone was so
>> helpful I thought I would give it another go.
>>
>> I am trying to setup my first uart connections to the beagle bone. A GPS
>> sensor for reading out GPS sentences from the device. I have confirmed it
>> works with other micro controllers and my windows PC. However, I have no
>> experience with the command line tools in linux to read this stuff. Which
>> is the first step I want to take before writing software around it.
>>
>> I have read a bunch of stuff about stty, setserial and other tools to
>> read a uart, but have had just plain NO LUCK.
>>
>> I have attached my GPS Tx line to my P9, pin 26 (UART1_RXD). As far as I
>> have read, this should be the correct pin for this. I have also used the
>> power and ground lines from the BeagleBone into a bread board. Confirmed it
>> is Tx'ing data at 9600 with an external serial connection (via windows) and
>> my oscilloscope. I would like todo the following:
>>
>> 1. Setup the uart connection.
>> - Does this require setting a mode on the pin for muxing?
>> - How do I read the data?
>>
>> I have found several articles on talking to a serial device, but none
>> that are clear to me on how to read.
>>
>> Thanks in advanced.
>>
>> Cheers,
>>
>> Gregg
>>
>> --
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-- 
Thanks & Regard
*s*
*Revathi.M*

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