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[Bug 1002027] New: STM32 HSI clock initialized incorrectly
- From: bugzilla-daemon at bugs dot ecos dot sourceware dot org
- To: unassigned at bugs dot ecos dot sourceware dot org
- Date: Sat, 06 Dec 2014 22:30:13 +0000
- Subject: [Bug 1002027] New: STM32 HSI clock initialized incorrectly
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http://bugs.ecos.sourceware.org/show_bug.cgi?id=1002027
Bug ID: 1002027
Summary: STM32 HSI clock initialized incorrectly
Product: eCos
Version: CVS
Target: stm32f4dis (ST STM32F4DISCOVERY)
Architecture/Host Cortex-M
OS:
Status: UNCONFIRMED
Severity: major
Priority: low
Component: HAL
Assignee: unassigned@bugs.ecos.sourceware.org
Reporter: mmajchrzycki@antmicro.com
CC: ecos-bugs@ecos.sourceware.org
Created attachment 2557
--> http://bugs.ecos.sourceware.org/attachment.cgi?id=2557&action=edit
Patch to fix HSI bug in STM32 architecture
In any STM32 platform, selecting internal RC oscillator (HSI) as clock source
causes a generate unstable frequency. This is because the HSITRIM field in
RCC_CR is cleared during clock initialization process.
Restoration of the default value of HSITRIM restores generation of stable
frequency by internal RC oscillator.
In attachment is a patch which fixes bug that is mentioned above.
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