STM32 LPTICKER update for targets supporting RTC

[jeromecoutant]

Description

STM32 LPTICKER update for targets supporting RTC

This completes #6474
And should be the last PR from ST in the ticker feature branch

Targets:

• STM32L1, STM32F0, STM32F3, most of STM32F4
• STM32L0, STM32L4, STM32F7 and few STM32F4 if user decides to disable lpticker_lptim config

@bulislaw @c1728p9 @screamerbg

Pull request type

[ ] Fix
[X] Refactor
[ ] New target
[ ] Feature
[ ] Breaking change

[0xc0170]

/morph build

[mbed-ci]

Build : FAILURE

Build number : 1849
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/6739/

[jeromecoutant]

Please, start again morph build
Sorry

[0xc0170]

/morph build

[mbed-ci]

Build : SUCCESS

Build number : 1852
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/6739/

Triggering tests

/morph test
/morph uvisor-test
/morph export-build
/morph mbed2-build

[marcemmers]

Looks like a big improvement over the previous versions.

@jeromecoutant Would it still be an idea to implement a way to set the rtc time without disturbing the rtc_read_lp() function like we discussed earlier?

[jeromecoutant]

Yes, updating the rtc write time will follow soon,
but I don't have any test yet to check this, and it is not "mandatory" to make LP ticker working

[marcemmers]

Ah ok, never mind then ;)

[mbed-ci]

Exporter Build : SUCCESS

Build number : 1496
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/6739/

[mbed-ci]

Test : SUCCESS

Build number : 1660
Test logs :http://mbed-os-logs.s3-website-us-west-1.amazonaws.com/?prefix=logs/6739/1660