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[ts-7000] TS-7800 ADC direct access

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Subject: [ts-7000] TS-7800 ADC direct access
From: "quicksliver2201" <>
Date: Tue, 25 May 2010 16:30:39 -0000
Hello TS-7000 Community,

Firstly I'd like to mention that I am a college student working on an 
undergraduate research opportunity (through the Space Grant foundations, if 
anyone is familiar with those) which is a primarily student run project. So 
that being said I am relatively unfamiliar with embedded systems, but am eager 
to learn more.

This post is partially in reference to a previous post I came across that I 
unfortunately cannot find to link right now. Either way, I read that it was 
possible to take less than 2k samples in a given conversion with the ADC by 
setting specific positions in the shared memory to 0xFFFF, calling a conversion 
and then polling those positions. My question is would that process entail 
establishing the shared memory segment in a completely separate process, then 
making a system call to ts7800ctl and finally checking those individual 
positions within the separate process for the updated values? Or would it 
involve modifying the ts7800ctl command code itself? I am hoping the former 
would be the case as we need to be able to read the sensor values into memory 
because some need to be sent to another process before being stored. 

Any information on how to directly access these ADC values would be greatly 
appreciated, and I apologize in advance for any misunderstandings I am likely 
to have.

Thanks,

Josh



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