topic Re: s32k344 tempsensor in S32K

s32k344 tempsensor

rlaxortn — Fri, 16 May 2025 04:59:57 GMT

i am using s32k344 evb T172.

and i watched ADC TEMPSENSOR in RM Document.

so does it just read ADC? this ADC TEMPSENSOR is for measuring for MCU Temperature?

this TEMPSENSOR is internal features in MCU?

thanks for help.

Re: s32k344 tempsensor

Senlent — Fri, 16 May 2025 05:40:14 GMT

Hi@rlaxortn

yes,you're right.

please take a look at the S32K3xx_RM:

Re: s32k344 tempsensor

rlaxortn — Fri, 16 May 2025 07:02:07 GMT

@Senlent

i don't understand example in s32k3xxRM document.

1. can i get source code and explain in detail?

2. is that right i set configure adc temperature sensor?

i get result this.

0xf0e is 3854, 0xf1a is 3866.

how is calculate for getting temperature?

Re: s32k344 tempsensor

Senlent — Fri, 16 May 2025 07:09:23 GMT

Hi@rlaxortn

Please refer to the attachment.

S32K344，S32 DS + RTD 3.0.0 P07

Re: s32k344 tempsensor

rlaxortn — Fri, 16 May 2025 07:36:09 GMT

@Senlent

i wanna to be explain about

what is mean 0x7ff0, 0x0f, 0x8000...?

what is that parameter?

example is same configure with my project configure.

i need to understand i apply formula for getting mcu temperature.

then i can apply to my project.

but i don't under stand that soucecode. because i don't understand why set 0x7ff0, 0x0f, 0x8000.

thanks for help.

Re: s32k344 tempsensor

Senlent — Fri, 16 May 2025 08:06:49 GMT

Hi@rlaxortn

TemperatureRaw is 16 bits wide, the highest bit is the sign bit (0x8000->0b1000,0000,0000,0000), the lower 4 bits are decimal places (0x0f), and the rest are integer bits.

Re: s32k344 tempsensor

rlaxortn — Fri, 16 May 2025 09:52:21 GMT

@Senlent

i build that and i get a temperature data.

but i don't know this is temperature data. because data is so weird.

although this data is Fahrenheit or Degree Celsius, data is so weird.

here is maybe 20 Degree Celsius.

what is wrong i do...?

thank to help.

Re: s32k344 tempsensor

Senlent — Mon, 19 May 2025 08:35:03 GMT

Hi@rlaxortn

Have you tested the demo I provided?

What hardware are you using and is the reference voltage of the internal temperature sensor set correctly?

Re: s32k344 tempsensor

rlaxortn — Fri, 30 May 2025 01:49:42 GMT

@Senlent

/* Transform to float number. */

Temperature = ((TemperatureRaw&0x7FF0)>>4) + (TemperatureRaw&0x0F)/16.0F;

if ((TemperatureRaw & 0x8000) != 0)

{

Temperature = -(Temperature);

}

can you explain this source detail?

Re: s32k344 tempsensor

Senlent — Fri, 30 May 2025 02:09:42 GMT

Hi@rlaxortn

I have already answered your question in my previous answer.

“

TemperatureRaw is 16 bits wide, the highest bit is the sign bit (0x8000->0b1000,0000,0000,0000), the lower 4 bits are decimal places (0x0f), and the rest are integer bits.

”

Re: s32k344 tempsensor

rlaxortn — Thu, 12 Jun 2025 09:05:03 GMT

@Senlent

i know. so is that data is Fahrenheit or Celsius?

i got that data.

if i set wrong voltage, default vaule is 53.

so what i set value? can i get formula?

Re: s32k344 tempsensor

Senlent — Thu, 12 Jun 2025 09:42:48 GMT

Hi@rlaxortn

1.i know. so is that data is Fahrenheit or Celsius?

Celsius,

2.if i set wrong voltage, default vaule is 53. so what i set value? can i get formula?

53->0b0011_0101->3.5V

Re: s32k344 tempsensor

rlaxortn — Tue, 17 Jun 2025 09:20:39 GMT

@Senlent

if i set wrong voltage, default vaule is 53. so what i set value? can i get formula?

53->0b0011_0101->3.5V

1. how is set 5V and 5.5V?

thanks to help.

Re: s32k344 tempsensor

Senlent — Tue, 15 Jul 2025 07:49:51 GMT

Hi@rlaxortn

5V->0b0101_0000->0x50->80

5.5V->0b0101_0101->0x55->85

Re: s32k344 tempsensor

rlaxortn — Fri, 09 Jan 2026 08:49:24 GMT

@Senlent

you respond this :

Hi@rlaxortn

5V->0b0101_0000->0x50->80

5.5V->0b0101_0101->0x55->85

but is 0b0011_0000-> 0x30, so is it not 5.0V?right?

i don't understans why 0b0011_0011 is 0x55?

if i wanna set 5V-> 0b0101_0000->0x50, it is 5V. right?

Re: s32k344 tempsensor

Senlent — Tue, 15 Jul 2025 07:51:09 GMT

Hi@rlaxortn

This is my oversight. 5V->0b0101 was mistakenly written as 0b0011