RTEMS | bsps/arm/stm32f4: fix HPRE bitfield Possible Bug in STM32F4 RCC header (!1136)

Sun Mar 15 20:40:19 UTC 2026

Mohamed Ayman created a merge request: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/1136

Project:Branches: mohamedayman23/rtems:correct-HPRE-bitfield-overflow to rtems/rtos/rtems:main
Author:   Mohamed Ayman

bsps/arm/stm32f4: fix HPRE bitfield Possible Bug in STM32F4 RCC header

Fix HPRE macro in cfgr register: original spanned bits 4–15,

accidentally overwriting APB1/APB2 prescaler bits (10–15).

Corrected range to 4–7, matching hardware specification.

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View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/1136
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