S32K中的主题 Re: EB_MCAL - MCU Internal Temperature

EB_MCAL - MCU Internal Temperature

Venu_M — Thu, 20 Jul 2023 11:46:16 GMT

Hello NXP team,

I was connected with NXP Team member SENLENT. He said create a new question with EB as a subject name. Can you share the info with respect to the EB tool.

I tried with this post https://community.nxp.com/t5/S32K-Knowledge-Base/Example-S32K3-Temperature-Sensor-S32-DS-V3-5-RTD-2-0-2/ta-p/1679110

I am getting the value for this on data variable by using Adc_StartGroupConversion () instead of using Adc_Sar_Ip_GetConvData().

For tempsense variable is not updating correctly always its giving 6733(Tca0) value in Tempsense variable so its giving an result as high temperature.

How to read MCU internal temperature sensor value through ADC.

How to configure this pin in the EB_configuration.
which pin need to configured for this.

Adc_Sar_Ip_TempSenseEnable();

Adc_Sar_Ip_GetConvData();

Adc_Sar_Ip_TempSenseCalculateTemp();

These Api i used for accessing the values from the register.

After this its Tca1 its going to the vector catch.

its going to the trap_bus_isr and went to vector catch.

Can you tell me the flow or procedure how to access the temperature value (ETS) from MCU chip by using EB tool.

Re: EB_MCAL - MCU Internal Temperature

Nhi_Nguyen — Wed, 02 Aug 2023 03:24:38 GMT

Hi Venukumar,

Follow RM:

To enable Tempsense's features, you need to enable these parameters in EB:

To Tempsense output is input of ADC, you need to enable:

Follow RM, to convert from voltage to temperature:

In this expression, TCA0, TCA1, TCA2 are read-only and normally not change(or change just a little bit) and they have value:

So, in your case TCA0 is correct.

I encountered the issue that temperature couldn't convert correctly for the package RTM201 through the function Adc_TempSenseCalculateTemp(), but this issue fixed in the latest version RTM 300_P07 or fixed early. So, if you're using old version, please upgrade it.

For clock, please don't forget to enable this:

Best regards,

Nhi

Re: EB_MCAL - MCU Internal Temperature

Venu_M — Fri, 06 Oct 2023 13:13:02 GMT

Hi Nhi,

I configured like, what you mentioned.
I'm able to get the value but how i will get the value in a degree based(like 35deg or 56deg)

AdcReadGroupResult_1[8] is the Tempsense channe output(1239).

here i got the value as 3517 by using this Api --> Adc_Sar_Ip_TempSenseGetTemp

Can you please tell me how to convert (api)this value into a degree based.

Re: EB_MCAL - MCU Internal Temperature

Nhi_Nguyen — Wed, 11 Oct 2023 03:44:28 GMT

Hi @Venu_M ,

The return value of the function Adc_Sar_Ip_TempSenseCalculateTemp() is in fixed-point format as description below:

Some expressions used to calculate:

For example:

Note:

- Conversion resolution

- Reference Voltage, in my case, Vref is 5V.

Seem that there is difference result between expression in RM and driver. I'll contact to SW team and get feedback from them.

Best regards,

Nhi

Re: EB_MCAL - MCU Internal Temperature

Nhi_Nguyen — Wed, 11 Oct 2023 07:13:05 GMT

Hi @Venu_M ,

SW team confirm that they didn't handle tolerance well. The ticket RTD-24483 raised to improve this. It'll be integrated in the release RTM 400.

Best regards,

Nhi

Re: EB_MCAL - MCU Internal Temperature

Venu_M — Fri, 13 Oct 2023 14:25:15 GMT

Hi Nhi,

I'm getting the value as 1239 from adcgroupresult for the tempsensor channel.

1239*(3.3/4095)=0.9984

So, if i calculate by using this formula, the temperature value will be 200+degree.

How to do this .

Re: EB_MCAL - MCU Internal Temperature

Nhi_Nguyen — Mon, 16 Oct 2023 00:47:13 GMT

Hi @Venu_M ,

From my point of view, your problem can come from setting parameters to measure temperature is incorrect. As I said in the previous comment, please take care these parameters:

Best regards,

Nhi

Re: EB_MCAL - MCU Internal Temperature

Venu_M — Mon, 16 Oct 2023 06:32:41 GMT

Hi Nhi,

Reference voltage 3.3v
Conversion resolution 12bit

Parameters is correct only. But while reading the temperature value giving wrong.

Re: EB_MCAL - MCU Internal Temperature

Nhi_Nguyen — Mon, 16 Oct 2023 07:17:10 GMT

Hi @Venu_M ,

Because Vref value depends on the board. So, my suggestion that you can use the example that was attached in the package, then you can ensure that setting for ADC is correct, then change one of channel that measured to temperature channel.

For example:

I used this example:

Follow to

Vref in my case: 5V.

I changed channel 1 to temperature channel as below:

Result is as in previous comment.

Best regards,

Nhi

Re: EB_MCAL - MCU Internal Temperature

Venu_M — Wed, 01 Nov 2023 11:25:40 GMT

Hi Nhi,

I used the same configuration like 5V as reference like you mentioned.

I got the value from ADC is 1059 (last value for the temperature sensor) its varying from 1059 to 1887 like that and its reducing in the low level also,

This Api I'm using.

I'm confusing for this temperature channel value updating.
Can you share the whole process, I did whatever you mentioned but need a clarity for me.
You mentioned like some RTD versions. Can you share the link for download as well?

Re: EB_MCAL - MCU Internal Temperature

Nhi_Nguyen — Tue, 07 Nov 2023 09:06:05 GMT

Hi @Venu_M ,

I attached an example that I just changed a little bit based on available example that attached in the package. you can try it.

You can read readme to know more information about board used. I'm using the package SW32K3_RTD_R21-11_3.0.0_P07. You can find it at the link:

https://nxp.flexnetoperations.com/control/frse/product?child_plneID=830617

Best regards,

Nhi

Re: EB_MCAL - MCU Internal Temperature

aze — Thu, 16 Nov 2023 07:22:49 GMT

Is the value of Temp converted to decimal the temperature actually captured by the temperature sensor?

Re: EB_MCAL - MCU Internal Temperature

aze — Thu, 16 Nov 2023 07:25:51 GMT

or others？

Re: EB_MCAL - MCU Internal Temperature

Venu_M — Thu, 04 Jan 2024 07:40:41 GMT

Hi Nhi,
Can you share the RTD package for this version
SW32K3_RTD_R21-11_3.0.0_P07.

Im using this version --> SW32K3_RTD_4.4_2.0.0

So it will be helpful

Re: EB_MCAL - MCU Internal Temperature

Nhi_Nguyen — Thu, 04 Jan 2024 08:11:50 GMT

Hi @Venu_M ,

All data in this thread that I said as example, they captured from the example that I was attached and sent to you, like this:

Best regards,

Nhi

Re: EB_MCAL - MCU Internal Temperature

Nhi_Nguyen — Thu, 04 Jan 2024 08:20:10 GMT

Hi @Venu_M ,

You can find the release SW32K3_S32M27x_RTD_R21-11_4.0.0

at the link:

https://nxp.flexnetoperations.com/control/frse/download?agree=Accept&element=3790868

Best regards,

Nhi

Re: EB_MCAL - MCU Internal Temperature

Venu_M — Thu, 04 Jan 2024 13:22:06 GMT

Hi Nhi,
Can you please check with this RTD SW32K3_RTD_4.4_2.0.0 .
To check the MCU temperature.

Re: EB_MCAL - MCU Internal Temperature

Nhi_Nguyen — Fri, 05 Jan 2024 07:20:04 GMT

Hi @Venu_M ,

Did you try to run the example that I attached to previous comment? In my example, Vref = 5 not 3.3V. You can refer to read me to see board used. Because as far as I know, Changing board make default Vref change. You also need to upgrade to the latest version also.

Best regards,

Nhi

Re: EB_MCAL - MCU Internal Temperature

Venu_M — Fri, 05 Jan 2024 13:43:51 GMT

Hi Nhi,

Can I use this RTD package for MCU Internal Temperature?
Currently we are using SW32K3_RTD_4.4_2.0.0.
Our MCU is S32K342.

Re: EB_MCAL - MCU Internal Temperature

Nhi_Nguyen — Mon, 08 Jan 2024 02:59:14 GMT

Hi @Venu_M ,

This should be the best package for known issues were fixed. In this package, have no the example for S32K342 so you need to import this project from the previous releases.

Best regards,

Nhi