Tell whoever's got the T1 that 1967 is way behind us and get a new interface.
Problem eliminated LOL

------ Original Message ------
Sent: 2/22/2018 6:16:45 PM
Subject: Re: [AFMUG] OT Raspberry PI

I have to generate an alternate mark inversion signal on 1.544 MHz with every 193rd bit following a t1 framing sequence.
Sure wish a 555 could do that.

Sent: Thursday, February 22, 2018 4:10 PM
Subject: Re: [AFMUG] OT Raspberry PI

Find a 555 timer ... I used many in the olden day when radioshacks were king LOL!

On 02/22/2018 05:05 PM, wrote:
I am thinking of using some shift registers instead of using the PI output directly as the timing signal.

Use the PI to load them.

I love me some hardware design anyhow....

From:Colin Stanners
Sent: Thursday, February 22, 2018 3:59 PM
Subject: Re: [AFMUG] OT Raspberry PI

Other than setting the process priority, you may need a custom kernel. See

On Feb 22, 2018 4:48 PM, <> wrote:
Anyone know how to get my program to run on bare metal?

Or at the very least tell Linux that my program is the most important thing in the world and service it above all other things.

I am trying to create a timing signal with the Pi. It is doing it but the jitter is pretty bad.

I have researched trying to use an interrupt but there is a pretty low limit on how many times per second you can fire a hardware interrupt.
Too low for my application.


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