# SPDX-License-Identifier: Apache-2.0 CONFIG_ARM=y CONFIG_BOARD_NUCLEO_F103RB=y CONFIG_SOC_SERIES_STM32F1X=y CONFIG_SOC_STM32F103XB=y CONFIG_CORTEX_M_SYSTICK=y # 72MHz system clock CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=72000000 # enable uart driver CONFIG_SERIAL=y # enable console CONFIG_CONSOLE=y CONFIG_UART_CONSOLE=y # enable pinmux CONFIG_PINMUX=y # enable GPIO CONFIG_GPIO=y # clock configuration CONFIG_CLOCK_CONTROL=y # Clock configuration for Cube Clock control driver CONFIG_CLOCK_STM32_HSE_CLOCK=8000000 CONFIG_CLOCK_STM32_SYSCLK_SRC_PLL=y # use HSE as PLL input CONFIG_CLOCK_STM32_PLL_SRC_HSE=y # however, the board does not have an external oscillator, so just use # the 8MHz clock signal coming from integrated STLink CONFIG_CLOCK_STM32_HSE_BYPASS=y # produce 72MHz clock at PLL output CONFIG_CLOCK_STM32_PLL_XTPRE=n CONFIG_CLOCK_STM32_PLL_MULTIPLIER=9 CONFIG_CLOCK_STM32_AHB_PRESCALER=1 # APB1 clock must not to exceed 36MHz limit CONFIG_CLOCK_STM32_APB1_PRESCALER=2 CONFIG_CLOCK_STM32_APB2_PRESCALER=1