initial commit

third_party/tinyusb/hw/bsp/stm32f4/boards/stm32f411blackpill/board.mk

@@ -0,0 +1,13 @@
+CFLAGS += -DSTM32F411xE -DHSE_VALUE=25000000
+
+# GCC
+SRC_S += $(ST_CMSIS)/Source/Templates/gcc/startup_stm32f411xe.s
+LD_FILE = $(BOARD_PATH)/STM32F411CEUx_FLASH.ld
+
+
+# For flash-jlink target
+JLINK_DEVICE = stm32f411ce
+
+# flash target ROM bootloader
+flash: $(BUILD)/$(PROJECT).bin
+	dfu-util -R -a 0 --dfuse-address 0x08000000 -D $<