Hi Folks, Would someone please tell me where to find the calibration values for the temperature sensor for this chip when using 2.5 volt reference voltage? I found a sample code that says the calibration values when using 1.5 volt reference is located at 0x1A1A and 0x1A1C. Surely there exists a document somewhere that illustrates where to find all the calibration values for this chip, but I am not able to fine it. I don't understand why TI didn't just put #defines in the chip header files. Anyway, I can't even attempt to understand that. I will be very content to understand where to find the 2 values I need to calibrate the on-board temp sensor when using the 2.5 volt reference. I suppose they are designated as something like CALADC12_25V_30C... Thank you for your time, Mike Raines Start a New Thread

On 09/24/2014 02:14 PM, m...@hofferflow.com [msp430] wrote:
> Hi Folks, Would someone please tell me where to find the calibration
> values for the temperature sensor for this chip when using 2.5 volt
> reference voltage?
See table 60 in the device data sheet. (aka RTFM)

> I suppose they are designated as something like CALADC12_25V_30C...
It appears that the intent was that you would parse the TLV structure
looking for the ADC12 tag rather than use absolute addresses although it
is a bit more work.

--
David W. Schultz
http://home.earthlink.net/~david.schultz
Returned for Regrooving


Posted by: "David W. Schultz"




Start a New Thread

I was trying to RTFM (in between other duties) in order to help Mike out. Being unfamiliar with the processor and only searching the PDF (i.e. not printing it out) with "temperature sensor" did not lead to Table 60. There it is "Temp. Sensor". Therefore, the information might have been a little harder to find than it should have been.

BTW, I looked at the Family Guide, too.

Thanks for the specific reference and a mild RTFM.

Emmett Redd Ph.D. mailto:E...@missouristate.edu
Professor (417)836-5221
Department of Physics, Astronomy, and Materials Science
Missouri State University Fax (417)836-6226
901 SOUTH NATIONAL Lab (417)836-3770
SPRINGFIELD, MO 65897 USA Dept (417)836-5131

In statesmanship get the formalities right, never mind about the moralities. -- Mark Twain.
________________________________________
From: m... [m...]
Sent: Wednesday, September 24, 2014 4:05 PM
To: m...
Subject: Re: [msp430] MSP430F5438A on-board temperature sensor calibration data

On 09/24/2014 02:14 PM, m...@hofferflow.com [msp430] wrote:
> Hi Folks, Would someone please tell me where to find the calibration
> values for the temperature sensor for this chip when using 2.5 volt
> reference voltage?
See table 60 in the device data sheet. (aka RTFM)

> I suppose they are designated as something like CALADC12_25V_30C...
It appears that the intent was that you would parse the TLV structure
looking for the ADC12 tag rather than use absolute addresses although it
is a bit more work.

--
David W. Schultz
http://home.earthlink.net/~david.schultz
Returned for Regrooving


Posted by: "David W. Schultz"




Start a New Thread

Thanks Guys,

I usually try to RTFM, but this one was hidden a bit too much for me. Actually, Table 59 was the last table in the version of data sheet I was using. Using the latest version, I was able to find the info David pointed me to. Actually, I had already implemented my own temperature calibration algorithm several years ago for a device that employs heaters to protect an LCD screen. When I saw the TI example referencing the calibration variables, I wondered if there was some wonderous area that contained all kinds of chip-level calibration data. Thanks again for the folks who found it for me, and I'll just fight the war with the calibration data I have not the data I wish I had. I also posted this request on TI's E2E site and got no replies. I am going to answer my own question and credit David. Mike Raines

________________________________
From: m... [mailto:m...]
Sent: Wednesday, September 24, 2014 5:23 PM
To: m...
Subject: RE: [msp430] MSP430F5438A on-board temperature sensor calibration data

I was trying to RTFM (in between other duties) in order to help Mike out. Being unfamiliar with the processor and only searching the PDF (i.e. not printing it out) with "temperature sensor" did not lead to Table 60. There it is "Temp. Sensor". Therefore, the information might have been a little harder to find than it should have been.

BTW, I looked at the Family Guide, too.

Thanks for the specific reference and a mild RTFM.

Emmett Redd Ph.D. mailto:E...@missouristate.edu
Professor (417)836-5221
Department of Physics, Astronomy, and Materials Science
Missouri State University Fax (417)836-6226
901 SOUTH NATIONAL Lab (417)836-3770
SPRINGFIELD, MO 65897 USA Dept (417)836-5131

In statesmanship get the formalities right, never mind about the moralities. -- Mark Twain.
________________________________________
From: m... [m...]
Sent: Wednesday, September 24, 2014 4:05 PM
To: m...
Subject: Re: [msp430] MSP430F5438A on-board temperature sensor calibration data

On 09/24/2014 02:14 PM, m...@hofferflow.com [msp430] wrote:
> Hi Folks, Would someone please tell me where to find the calibration
> values for the temperature sensor for this chip when using 2.5 volt
> reference voltage?

See table 60 in the device data sheet. (aka RTFM)

> I suppose they are designated as something like CALADC12_25V_30C...

It appears that the intent was that you would parse the TLV structure
looking for the ADC12 tag rather than use absolute addresses although it
is a bit more work.

--
David W. Schultz
http://home.earthlink.net/~david.schultz
Returned for Regrooving


Posted by: "David W. Schultz"




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