zmk/app/boards/arm/bdn9/bdn9_rev2_defconfig

# SPDX-License-Identifier: MIT

CONFIG_SOC_SERIES_STM32F0X=y
CONFIG_SOC_STM32F072XB=y
# 72MHz system clock
CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=72000000

# Floating Point Options
CONFIG_FPU=y

# enable GPIO
CONFIG_GPIO=y

# Needed for matrix to properly work
CONFIG_ZMK_KSCAN_DIRECT_POLLING=y

# Enable pinmux
CONFIG_PINMUX=y

# Needed to reduce this to size that will fit on F072
CONFIG_HEAP_MEM_POOL_SIZE=1024

# clock configuration
CONFIG_CLOCK_CONTROL=y

# Clock configuration for Cube Clock control driver
CONFIG_CLOCK_STM32_SYSCLK_SRC_PLL=y
# use HSI as PLL input
CONFIG_CLOCK_STM32_PLL_SRC_HSI=y
# produce 72MHz clock at PLL output
CONFIG_CLOCK_STM32_PLL_PREDIV=1
CONFIG_CLOCK_STM32_PLL_MULTIPLIER=12
CONFIG_CLOCK_STM32_AHB_PRESCALER=1
CONFIG_CLOCK_STM32_APB1_PRESCALER=2
CONFIG_CLOCK_STM32_APB2_PRESCALER=1