[beagleboard] BBB: Serial Wiring For External Device Over UART1

2014-11-25 Thread pietersydneytheron 
I've been trying to attach a serial device to the beaglebone black and 
communicating with it over UART 1 (p9_24 and p9_26) with no success.

In part because I am new to linux and have no idea how to ping/check 
connected devices over terminal and NO prior electronic knowledge to insure 
the device is properly wired up to the beaglebone black.

I've attached a wiring diagram below. Can someone please confirm:

 1. That I've wired it correctly by looking at the diagram 
 2. That the supplied voltage from the BBB is sufficient to power the 
attached device (3.3V TTL)

Mapping explained (see device diagram): 

Pin 1 VCC (P) to 3.3Vdc on the BBB (p9_03)
Pin 2 GND (G) to GND on the BBB (p9_01)
PIN 3 TXD (O) to UART1 RX on the BBB (p9_26)
PIN 4 RXD (I) to UART1 TX on the BBB (p9_24)




Regards
Pieter

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Re: [beagleboard] BBB: Serial Wiring For External Device Over UART1

2014-11-25 Thread Jason Lange 
It looks good to me, as long as you are drawing less then 250ma.

On Tue, Nov 25, 2014 at 12:41 AM,  wrote:

> I've been trying to attach a serial device to the beaglebone black and
> communicating with it over UART 1 (p9_24 and p9_26) with no success.
>
> In part because I am new to linux and have no idea how to ping/check
> connected devices over terminal and NO prior electronic knowledge to insure
> the device is properly wired up to the beaglebone black.
>
> I've attached a wiring diagram below. Can someone please confirm:
>
>  1. That I've wired it correctly by looking at the diagram
>  2. That the supplied voltage from the BBB is sufficient to power the
> attached device (3.3V TTL)
>
> Mapping explained (see device diagram):
>
> Pin 1 VCC (P) to 3.3Vdc on the BBB (p9_03)
> Pin 2 GND (G) to GND on the BBB (p9_01)
> PIN 3 TXD (O) to UART1 RX on the BBB (p9_26)
> PIN 4 RXD (I) to UART1 TX on the BBB (p9_24)
>
>
> 
>
>
> Regards
> Pieter
>
> --
> For more options, visit http://beagleboard.org/discuss
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RE: [beagleboard] BBB: Serial Wiring For External Device Over UART1

2014-11-25 Thread William Pretty Security 
Hi Pieter;

 

Your wiring and voltages look fine.

However you have to ‘enable’ the other serial ports.

 

Try searching for “enable /dev/ttyO1” on this list or via Google.

 

Bill

 

"No one could make a greater mistake than he who did nothing because he could 
do only a little."

"All that is necessary for the triumph of evil is that good men do nothing" 
Edmond Burke (1729 - 1797)

http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book

 

From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com] On 
Behalf Of Jason Lange
Sent: Tuesday, November 25, 2014 3:12 PM
To: Beagle Board
Subject: Re: [beagleboard] BBB: Serial Wiring For External Device Over UART1

 

It looks good to me, as long as you are drawing less then 250ma. 

 

On Tue, Nov 25, 2014 at 12:41 AM,  wrote:

I've been trying to attach a serial device to the beaglebone black and 
communicating with it over UART 1 (p9_24 and p9_26) with no success.

 

In part because I am new to linux and have no idea how to ping/check connected 
devices over terminal and NO prior electronic knowledge to insure the device is 
properly wired up to the beaglebone black.

 

I've attached a wiring diagram below. Can someone please confirm:

 

 1. That I've wired it correctly by looking at the diagram 

 2. That the supplied voltage from the BBB is sufficient to power the attached 
device (3.3V TTL)

 

Mapping explained (see device diagram): 

 

Pin 1 VCC (P) to 3.3Vdc on the BBB (p9_03)

Pin 2 GND (G) to GND on the BBB (p9_01)

PIN 3 TXD (O) to UART1 RX on the BBB (p9_26)

PIN 4 RXD (I) to UART1 TX on the BBB (p9_24)

 
<https://lh3.googleusercontent.com/-ydiICNM4U4I/VHQ-aW5xjzI/Anw/wJnRP_pSdso/s1600/BBBSerialDiagram.png>
 

 

 

Regards

Pieter

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No virus found in this message.
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Version: 2015.0.5577 / Virus Database: 4223/8629 - Release Date: 11/25/14

  _  

No virus found in this message.
Checked by AVG - www.avg.com
Version: 2015.0.5577 / Virus Database: 4223/8621 - Release Date: 11/24/14

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