Review PR #12: STM32F411 support - identified missing bootloader configuration

[Copilot]

Reviewed PR #12 adding STM32F411 MCU support. The implementation correctly follows the F401 config pathway with proper specifications (96MHz clock, 512KB flash, 128KB RAM, voltage regulator scaling). Build tests pass for both F411 and F401.

Issue identified: MACH_STM32F411 missing from bootloader offset options in src/stm32/Kconfig.

Required changes

Add || MACH_STM32F411 to two bootloader configuration lines:

Line 315:

bool "48KiB bootloader" if MACH_STM32F4x5 || MACH_STM32F401 || MACH_STM32F411

Line 324:

bool "16KiB bootloader" if MACH_STM32F207 || MACH_STM32F401 || MACH_STM32F411 || MACH_STM32F4x5 || MACH_STM32F103 || MACH_STM32F072

Without these, users cannot select bootloader offsets for CanBoot or HID bootloader on F411 boards.

Technical notes

• Voltage regulator scaling (VOS Scale 1) correctly implemented for 96MHz operation
• TIM9 PWM on PA2/PA3 added, PE5/PE6 excluded (unavailable on F411)
• Serial ports: USART3 disabled, USART6 enabled (matches F411 hardware)
• Build: 36KB binary, 7.7% flash utilization

All other changes in PR #12 are correct and follow established F401 patterns.

Warning

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Original prompt

Can you review is PR ( #12 )and let me know if there are any issues adding the support for the stm32 F411 micro along the F401 config pathway?

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