add tinyusb

tinyusb/hw/bsp/lpcxpresso11u68/board.mk

@@ -0,0 +1,42 @@
+DEPS_SUBMODULES += hw/mcu/nxp/lpcopen
+
+CFLAGS += \
+  -flto \
+  -mthumb \
+  -mabi=aapcs \
+  -mcpu=cortex-m0plus \
+  -nostdlib \
+  -DCORE_M0PLUS \
+  -D__VTOR_PRESENT=0 \
+  -D__USE_LPCOPEN \
+  -DCFG_TUSB_MCU=OPT_MCU_LPC11UXX \
+  -DCFG_TUSB_MEM_SECTION='__attribute__((section(".data.$$RAM3")))' \
+  -DCFG_TUSB_MEM_ALIGN='__attribute__((aligned(64)))' 
+
+MCU_DIR = hw/mcu/nxp/lpcopen/lpc11u6x/lpc_chip_11u6x
+
+# All source paths should be relative to the top level.
+LD_FILE = hw/bsp/$(BOARD)/lpc11u68.ld
+
+SRC_C += \
+	src/portable/nxp/lpc_ip3511/dcd_lpc_ip3511.c \
+	$(MCU_DIR)/../gcc/cr_startup_lpc11u6x.c \
+	$(MCU_DIR)/src/chip_11u6x.c \
+	$(MCU_DIR)/src/clock_11u6x.c \
+	$(MCU_DIR)/src/gpio_11u6x.c \
+	$(MCU_DIR)/src/iocon_11u6x.c \
+	$(MCU_DIR)/src/syscon_11u6x.c \
+	$(MCU_DIR)/src/sysinit_11u6x.c
+
+INC += \
+	$(TOP)/$(MCU_DIR)/inc
+
+# For freeRTOS port source
+FREERTOS_PORT = ARM_CM0
+
+# For flash-jlink target
+JLINK_DEVICE = LPC11U68
+
+# flash using pyocd 
+flash: $(BUILD)/$(PROJECT).hex
+	pyocd flash -t lpc11u68 $<