TMS570LC4357-SEP：On-chip temperature detection

sam

Part Number: TMS570LC4357-SEP
Other Parts Discussed in Thread: LAUNCHXL2-570LC43, TMS570LC4357

Tool/software:

Dear TI Team

I looked at the following thread issues related to the MCU.

In the relevant manual, it is mentioned that the temperature sensor 3 is used. I ran the routine downloaded in the manual on the TMS570LC4357HDK board, and the result was negative. May I ask where I made a mistake?

The results are as follows:

Another question is, if only temperature sensor 3 is obtained, is it ok to only enable the drive of adc2?

2 months ago

0 sam 2 months ago

Prodigy 150 points

project：TempSensorExample

0 sam 2 months ago

Prodigy 150 points

I found something when I was looking at the forum.

https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1366961/tms570lc4357-internal-temperature-measure?tisearch=e2e-sitesearch&keymatch=TMS570LC4357%2525252520temperature%2525252520detection#

I then used LAUNCHXL2-570LC43 development board to test, the same code, the measured temperature is as follows:

This temperature is relatively normal.

0 jagadish gundavarapu 2 months ago in reply to sam

TI__Guru 69891 points

Hi Sam,

Good to hear that you solved the issue on your own.

sam said:
This temperature is relatively normal.

You are correct these values are relatively normal, and it is working code for launchpad.

--
Thanks & regards,
Jagadish.

0 sam 2 months ago in reply to jagadish gundavarapu

Prodigy 150 points

I have two more questions:
1. If I only obtain the temperature value from sensor 3, can I enable only the adc2 driver?
2. If I obtain the sensor temperature, will the AD acquisition channels corresponding to these three temperature sensors no longer be usable?

0 jagadish gundavarapu 2 months ago in reply to sam

TI__Guru 69891 points

Hi Sam,

sam said:
1. If I only obtain the temperature value from sensor 3, can I enable only the adc2 driver?

Yes, to get temperature sensor 3 data only enabling ADC2 is enough.

sam said:
2. If I obtain the sensor temperature, will the AD acquisition channels corresponding to these three temperature sensors no longer be usable?

It won't work like that. I mean as long as you enable the below selections the corresponding temperature sensor still available on the corresponding ADC channels.

--
Thanks & regards,
Jagadish.

0 sam 2 months ago in reply to jagadish gundavarapu

Prodigy 150 points

Hi，gundavarapu

Sorry, I didn't explain it clearly. If temperature sensor 1 is already in use, does that mean AD1IN[31] is occupied and cannot be connected to an external analog signal?

0 sam 2 months ago in reply to jagadish gundavarapu

Prodigy 150 points

Additionally, can the TMS570LC4357 collect its own voltage in the same way that it collects temperature?

0 jagadish gundavarapu 2 months ago in reply to sam

TI__Guru 69891 points

Hi Sam,

sam said:
Sorry, I didn't explain it clearly. If temperature sensor 1 is already in use, does that mean AD1IN[31] is occupied and cannot be connected to an external analog signal?

Yes correct. Until you change the selection line to external measurement it won't be available for external signal measurement.

sam said:
Additionally, can the TMS570LC4357 collect its own voltage in the same way that it collects temperature?

This device has a voltage monitor, but it won't give you exact voltage reading value however it monitors the voltage and if it out of the thresholds then it will reset the core.

(12) TMS5701224: Voltage monitor - Arm-based microcontrollers - INTERNAL forum - Arm-based microcontrollers - INTERNAL - TI E2E support forums

--
Thanks & regards,
Jagadish.

0 sam 2 months ago in reply to jagadish gundavarapu

Prodigy 150 points

Ok, thank you very much, this solved my problem very well.

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TMS570LC4357-SEP：On-chip temperature detection