Which internal temperature is correct in STM32Cube FW_G4 V1.6.1

SourFish · ‎2025-05-10

I want to use Macro "__LL_ADC_CALC_TEMPERATURE" to calculate the chip's temperature. But there is a difference here.

As mentioned above, in datasheet, TS_CAL2 corresponds to 130 ℃.

But in STM32Cube FW_G4 V1.6.1, file "stm32g4xx_ll_adc.h", line 386, TEMPSENSOR_CAL2_TEMP corresponds to 110 ℃.

Which one is ture?

unsigned_char_array · ‎2025-05-10

Please tell us what your exact MCU model you have, what datasheet version you used and what version STM32CubeMX and version of firmware pack you use(FW_G4 V1.6.1?).

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TDK · ‎2025-05-10

It is 130 and is correct in the GitHub version, but a library release has not yet been made which includes this fix.

stm32g4xx-hal-driver/Inc/stm32g4xx_ll_adc.h at 1a4f1ca138a19dfe42becc50975f11a1e7554e31 · STMicroelectronics/stm32g4xx-hal-driver

Solved: Re: STM32G431 TS_CAL2 temperature - STMicroelectronics Community

This issue was fixed a few years ago, then broken, and now fixed but not yet released.

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unsigned_char_array · ‎2025-05-10

@TDK wrote:
This issue was fixed a few years ago, then broken, and now fixed but not yet released.

That's bad. How can something like that happen? Does nobody review pull requests at ST?

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TDK · ‎2025-05-10

Do 99 things right and 1 thing wrong and people will always focus on the 1. People are human, mistakes happen. Nobody bats 100%.

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