obj-y += source/platform/spi_flash.o obj-y += source/platform/usart.o obj-y += source/platform/stm32f0/alarm.o obj-y += source/platform/stm32f0/gpio.o obj-y += source/platform/stm32f0/rcc.o obj-y += source/platform/stm32f0/rtc.o obj-y += source/platform/stm32f0/spi.o