Re: [ts-7000] Direct ADC access?

[Joel Morgan <>]

On Sat, Oct 22, 2011 at 7:11 PM, Mike Dodd <> wrote:

 

Let me try again with a correctly-typed subject line....

I'm booting a TS-7250 into Debian over NFS, and everything is sweet.

I can compile my HVAC-monitoring program using GCC, and it runs just
fine. It reads DIO port B with hvac_in = *PBDR' and flashes the LEDs
with '*PEDR = (1 << RED_LED_BIT)', etc.

My application writes HTML pages that are updated each hour with the
HVAC compressor and/or fan run-time for that hour. It would be nice if
each hour could include the outdoor temperature, and I think I can wire
a thermistor to an ADC input.

But I'd like to read/control the ADC directly via the memory-mapped I/O,
like the DIO and LED ports, instead of installing the ADC driver in the
Files section, and opening the ADC like a file.

Is this possible, or an I stuck with installing the driver?

Thanks for any insights.

--- Mike

I use the example functions at ftp://ftp.embeddedarm.com/ts-arm-sbc/ts-7260-linux/samples/adc_72xx.tar.gz assuming you are using the ep93xx onboard ADC


-- 
Joel R. Morgan
Morgan Millwright Services, Inc.
Linux User #504110   http://counter.li.org/

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