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SW4STM32 and SW4Linux fully supports the STM32MP1 asymmetric multicore Cortex/A7+M4 MPUs

   With System Workbench for Linux, Embedded Linux on the STM32MP1 family of MPUs from ST was never as simple to build and maintain, even for newcomers in the Linux world. And, if you install System Workbench for Linux in System Workbench for STM32 you can seamlessly develop and debug asymmetric applications running partly on Linux, partly on the Cortex-M4.
You can get more information from the ac6-tools website and download (registration required) various documents highlighting:

System Workbench for STM32

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Reading analog sensors

Posted by pticali on 2017-11-22 21:46

I’m working on a project with the STM32L475 low power MCUs that will read from an analog MQ135 gas sensor to be able to report air quality. Anyone have any sample code they can share? Would this be an ADC project or GPIO?

Also - how can I get a timestamp in real human readable time (aka a UTC timestamp) ?

And yes - all in freeRTOS.

Pete

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Posted by hardwareguyvw on 2017-11-29 10:33

The MQ135 appears to have both analog and digital out pins.

So this question: “Would this be an ADC project or GPIO?” is yes :-)

“how can I get a timestamp in real human readable time” - have you thought this project through?

You can use a RTC that gets “set” somehow. “Human readable” - have you heard of “sprintf” and “printf”?

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