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/os/hal/ports/STM32/STM32L4xx/stm32_registry.h
The STM32_GPIO_EN_MASK is set to
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#define STM32_GPIO_EN_MASK (RCC_AHB2ENR_GPIOAEN | \
RCC_AHB2ENR_GPIOBEN | \
RCC_AHB2ENR_GPIOCEN | \
RCC_AHB2ENR_GPIOHEN)
But it should be
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#define STM32_GPIO_EN_MASK (RCC_AHB2ENR_GPIOAEN | \
RCC_AHB2ENR_GPIOBEN | \
RCC_AHB2ENR_GPIOCEN | \
RCC_AHB2ENR_GPIODEN | \
RCC_AHB2ENR_GPIOEEN | \
RCC_AHB2ENR_GPIOHEN)