Nucleo STML031K6: Using Low power timer LPTIM to trigger another timer

[duybienle]

Posted on July 17, 2016 at 17:13

Hi,

I just got a Nucleo STM32L031K6 board and start playing with STM32Cubemx.

For my project I need to use the low power timer LPTIM to trigger another timer (e.g. TIM2) but I have no clue how to do this.

Could someone help me with some hints please? (an example code would be really nice since I'm really new to STM32 !)

Thanks,

Bien

[Radosław]

Posted on July 17, 2016 at 19:02

This is posible only by external loop, but this will not work in loW power modes...

[slimen]

Posted on July 18, 2016 at 12:18

Hi,

Following this manual 

http://www.st.com/content/ccc/resource/technical/document/reference_manual/21/bd/0f/bd/1c/88/40/f0/DM00108282.pdf/files/DM00108282.pdf/jcr:content/translations/en.DM00108282.pdf

, the Feature Timer synchronization isn't available for the LPTIM.

All the required for getting started with the

http://www.st.com/content/st_com/en/products/evaluation-tools/product-evaluation-tools/mcu-eval-tools/stm32-mcu-eval-tools/stm32-mcu-nucleo/nucleo-l031k6.html

 is available throw this

http://http://www.st.com/content/st_com/en/products/evaluation-tools/product-evaluation-tools/mcu-eval-tools/stm32-mcu-eval-tools/stm32-mcu-nucleo/nucleo-l031k6.html

 with the firmware package, various examples and the documentation describing how to use it.

You can start from an example under  

http://www.st.com/content/st_com/en/products/embedded-software/mcus-embedded-software/stm32-embedded-software/stm32cube-embedded-software/stm32cubel0.html

package, you find the needed LPTIM examples under this path:STM32Cube_FW_L0_V1.7.0\Projects\STM32L031K6-Nucleo\Examples\LPTIM

You can refer to this

http://www.st.com/content/ccc/resource/technical/document/application_note/54/0f/67/eb/47/34/45/40/DM00042534.pdf/files/DM00042534.pdf/jcr:content/translations/en.DM00042534.pdf

 (section: 6 Low-power timer), it may be helpful.

Regards

[duybienle]

Posted on July 25, 2016 at 11:18

Hi,

Thanks. I'll start with your suggestion.