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RTC init with LSE tries to deactivate LSI on STM targets #6265

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clementpinet opened this issue Mar 5, 2018 · 2 comments · Fixed by #6353
Closed

RTC init with LSE tries to deactivate LSI on STM targets #6265

clementpinet opened this issue Mar 5, 2018 · 2 comments · Fixed by #6353
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devices: st

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@clementpinet
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Description

  • Type: Bug
  • Priority: Blocker

Bug

Target
STM32L496RG custom board

Toolchain:
GCC_ARM

Toolchain version:
7.2.1 20170904

mbed-cli version:
1.4.0

Commit

01b2b1b#diff-e6d04026f2b052ed164f47b8ebff8240

File

targets/TARGET_STM/rtc_api.c L66

Behavior

Since this change, RTC initialization with LSE also tries to deactivate LSI.
We can no longer base RTC on LSE while using LSI for something else.
For example, IWDG is only working with LSI and blocks its deactivation.
Using IWDG prevents RTC initialization with LSE.
@0xc0170
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0xc0170 commented Mar 5, 2018

@ARMmbed/team-st-mcd Please review

@jeromecoutant
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Hi
I agree, PR will come soon

@jeromecoutant jeromecoutant mentioned this issue Mar 14, 2018
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STM32 RTC init jeromecoutant/mbed
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@clementpinet @0xc0170 @jeromecoutant