add tinyusb

tinyusb/hw/bsp/lpcxpresso11u37/board.mk

@@ -0,0 +1,45 @@
+DEPS_SUBMODULES += hw/mcu/nxp/lpcopen
+
+CFLAGS += \
+  -flto \
+  -mthumb \
+  -mabi=aapcs \
+  -mcpu=cortex-m0 \
+  -nostdlib \
+  -DCORE_M0 \
+  -D__USE_LPCOPEN \
+  -DCFG_EXAMPLE_MSC_READONLY \
+  -DCFG_TUSB_MCU=OPT_MCU_LPC11UXX \
+  -DCFG_TUSB_MEM_SECTION='__attribute__((section(".data.$$RAM2")))' \
+  -DCFG_TUSB_MEM_ALIGN='__attribute__((aligned(64)))' 
+
+# mcu driver cause following warnings
+CFLAGS += -Wno-error=strict-prototypes -Wno-error=unused-parameter
+
+MCU_DIR = hw/mcu/nxp/lpcopen/lpc11uxx/lpc_chip_11uxx
+
+# All source paths should be relative to the top level.
+LD_FILE = hw/bsp/$(BOARD)/lpc11u37.ld
+
+SRC_C += \
+	src/portable/nxp/lpc_ip3511/dcd_lpc_ip3511.c \
+	$(MCU_DIR)/../gcc/cr_startup_lpc11xx.c \
+	$(MCU_DIR)/src/chip_11xx.c \
+	$(MCU_DIR)/src/clock_11xx.c \
+	$(MCU_DIR)/src/gpio_11xx_1.c \
+	$(MCU_DIR)/src/iocon_11xx.c \
+	$(MCU_DIR)/src/sysctl_11xx.c \
+	$(MCU_DIR)/src/sysinit_11xx.c
+
+INC += \
+	$(TOP)/$(MCU_DIR)/inc
+
+# For freeRTOS port source
+FREERTOS_PORT = ARM_CM0
+
+# For flash-jlink target
+JLINK_DEVICE = LPC11U37/401
+
+# flash using pyocd 
+flash: $(BUILD)/$(PROJECT).hex
+	pyocd flash -t lpc11u37 $<