STM32L475 Timestamp

[Tech world]

Posted on March 08, 2018 at 08:20

Hello, 

I'm developing an application based on STM32L475 device. So I need a timestamp on my application. I saw an RTC_timestamp example of NUCLEO-L476RG. So please anyone can tell how can I port this RTC_timestamp example of NUCLEO-L476RG to my STM32L475. 

Best regards.

[Andrew Neil]

Posted on March 08, 2018 at 10:24

What, exactly, do you mean by 'timestamp' ?

If it just needs to be a number that increments at regular intervals, you could just use a simple timer - SysTick ?

how can I port this

same way that you'd port any other code:

1. Understand the dependencies on the 

   L476RG

2. See if these are the same on 

   STM32L475 - if they are, job done!

3. If not, then update to match the 

   STM32L475

Or simply work from scratch - using the RTC can't be that hard, can it ... ?

[Tech world]

Posted on March 08, 2018 at 11:25

thank you, Andrew Neil for the answer.

A timestamp is a record of time and date. 

In my case, I get the sensor values continuously but I need a timestamp.So that I understand my sensors behaviour on a different day, time.

Right now I have my sensor values in this form.

But I need a date and time for every corresponding value. I hope now you understand my question. 

[Andrew Neil]

Posted on March 08, 2018 at 11:51

Rai Ahmad wrote:

A timestamp is a record of time and date. 

Not necessarily.

I need a timestamp.So that I understand my sensors behaviour on a different day, time.

But you don't need to store the actual calendar date and wall-clock time to do that.

As noted, a simple count that increments at a known, regular interval would be sufficient.

In fact, if your sensor is being sampled 

at a known, regular interval - then you don't need anything extra at all!