STM32F0 reading internal temperature sensor and reference voltage at the same time.

[felisleonline]

Posted on August 02, 2016 at 21:25

Hi ,

I interested in measuring STM32F0 temperature and reference voltage using internal sensor of it's processor at the same time using UART. so I used channels like this;

ADC_ChannelConfig(ADC1, ADC_Channel_16 , ADC_SampleTime_55_5Cycles);

ADC_TempSensorCmd(ENABLE);

ADC_ChannelConfig(ADC1, ADC_Channel_Vrefint , ADC_SampleTime_55_5Cycles);

ADC_VrefintCmd(ENABLE);

Now I can measured only one values properly..If I applied to read two channel at the same time.I mixed volues eachother. I also looked for multichannel adc titles in the forum but it didn't work properly again. I think should use dma but I'm not good now.Thank you in advance for your help.

Regards.

[Amel NASRI]

Posted on August 22, 2016 at 17:13

Hi felisleo,

I suggest you have a look to the 2 following examples available in the

http://www.st.com/content/st_com/en/products/embedded-software/mcus-embedded-software/stm32-embedded-software/stm32cube-embedded-software/stm32cubef0.html

package:

- STM32Cube_FW_F0_V1.6.0\Projects\STM32F072RB-Nucleo\Examples_LL\ADC\ADC_MultiChannelSingleConversion

- STM32Cube_FW_F0_V1.6.0\Projects\STM32F072RB-Nucleo\Examples\ADC\ADC_Sequencer

In both examples, the two internal channels (temperature sensor and VrefInt) are converted.

-Mayla-

[Tesla DeLorean]

Posted on August 22, 2016 at 20:41

If you have two channels DMAing into an array in continuous/circular fashion you shouldn't get them mixed up. So I'm assuming you're trying to poll them.