ADC value to temperature

[loder]

Posted on April 12, 2016 at 21:28

Hello,

i now managed to reada analog value from my temperature sensor and i am now wondering how i can convert that value (3643) to a temperature? I didn't see any kind of formula how the value is calculated with Vref (reference Voltage) and how i can get the input voltage on its own. Do you have any ideas how i can do this?

Best regards

#adc-vrefint #adc

[Olivier GALLIEN]

Posted on January 27, 2017 at 11:57

Refer to exemple in Cube eg STM32Cube_FW_L4_V1.6.0\Projects\STM32L476RG-Nucleo\Examples_LL\ADC\ADC_TemperatureSensor

Computation of ADC value to temperature is available in ll_adc lib : __LL_ADC_CALC_TEMPERATURE 

Refer to AN3964 for theory  

http://www.st.com/content/ccc/resource/technical/document/application_note/b9/21/44/4e/cf/6f/46/fa/DM00035957.pdf/files/DM00035957.pdf/jcr:content/translations/en.DM00035957.pdf

 

Hope it help 

Olivier 

[Olivier GALLIEN]

Posted on January 27, 2017 at 14:39

Hi again

Gustamko.Master

Apology for my first answer about STM32

For STM8 relevant software exemple and application note are available here

https://my.st.com/content/my_st_com/en/products/embedded-software/mcus-embedded-software/stm8-embedded-software/stsw-stm8license%3d14855239874html

http://www.st.com/content/ccc/resource/technical/document/application_note/46/07/39/dd/1d/f8/46/7a/DM00028pdf/files/DM00028pdf/jcr:content/translations/en.DM00028pdf