interpreters/micropython: Add Micropython support to NuttX (WIP)

Application.mk

@@ -84,7 +84,7 @@ MAINCXXOBJ = $(MAINCXXSRCS:=$(SUFFIX)$(OBJEXT))
 MAINCOBJ = $(MAINCSRCS:=$(SUFFIX)$(OBJEXT))
 
 SRCS = $(ASRCS) $(CSRCS) $(CXXSRCS) $(MAINSRC)
-OBJS = $(RAOBJS) $(CAOBJS) $(COBJS) $(CXXOBJS)
+OBJS += $(RAOBJS) $(CAOBJS) $(COBJS) $(CXXOBJS)
 
 ifneq ($(BUILD_MODULE),y)
   OBJS += $(MAINCOBJ) $(MAINCXXOBJ)

interpreters/micropython/.gitignore

@@ -0,0 +1,2 @@
+
+micropython*

interpreters/micropython/Kconfig

@@ -0,0 +1,49 @@
+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+menuconfig INTERPRETERS_MICROPYTHON
+	tristate "Micropython Interpreter"
+	default n
+  select SERIAL_TERMIOS
+  select ARCH_SETJMP_H
+
+if INTERPRETERS_MICROPYTHON
+
+config INTERPRETERS_MICROPYTHON_PRIORITY
+	int "Micropython interpreter priority"
+	default 100
+
+config INTERPRETERS_MICROPYTHON_STACKSIZE
+	int "Micropython interpreter stack size"
+	default 8192
+
+config INTERPRETERS_MICROPYTHON_HEAPSIZE
+	int "Micropython interpreter default heap size"
+	default 65536
+	---help---
+	Default heapsize of Micropython. Heapsize can be overriden on the command line.
+
+
+config INTERPRETERS_MICROPYTHON_SOCKET
+  bool "Enable Micropython sockets"
+  default n
+
+config INTERPRETERS_MICROPYTHON_USSL
+  bool "Enable Micropython encryption"
+  default n
+
+if INTERPRETERS_MICROPYTHON_USSL
+
+config INTERPRETERS_MICROPYTHON_MBEDTLS
+  bool "Switch to MBEDTLS library for Micropython encryption"
+  default n
+  ---help---
+    By default Micropython uses the AXTLS library uses less code space but
+    does not support all modern algorithms
+    The MBEDTLS library supports more algorithms but takes lots of code space
+
+endif # INTERPRETERS_MICROPYTHON_USSL
+
+endif # INTERPRETERS_MICROPYTHON

interpreters/micropython/Make.defs

@@ -0,0 +1,23 @@
+############################################################################
+# interpreters/micropython/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+ifneq ($(CONFIG_INTERPRETERS_MICROPYTHON),)
+CONFIGURED_APPS += $(APPDIR)/interpreters/micropython
+endif

interpreters/micropython/Makefile

@@ -0,0 +1,81 @@
+############################################################################
+# interpreters/micropython/Makefile
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+include $(APPDIR)/Make.defs
+
+MPY_DIR  = micropython
+MPY_PORT_DIR = $(MPY_DIR)/ports/unix
+MPY_PORT_VARIANT_DIR = $(MPY_PORT_DIR)/variants/nuttx
+
+UNAME_S := NuttX
+PROGNAME  = micropython
+PRIORITY  = $(CONFIG_INTERPRETERS_MICROPYTHON_PRIORITY)
+STACKSIZE = $(CONFIG_INTERPRETERS_MICROPYTHON_STACKSIZE)
+MODULE    = $(CONFIG_INTERPRETERS_MICROPYTHON)
+
+OBJS += $(wildcard *.o)
+
+CFLAGS += -Wno-undef
+CFLAGS += -DMICROPY_UNIX_STACKLIMIT=$(CONFIG_INTERPRETERS_MICROPYTHON_STACKSIZE)
+CFLAGS += -DMICROPY_UNIX_DEFAULT_HEAPSIZE=$(CONFIG_INTERPRETERS_MICROPYTHON_HEAPSIZE)
+
+# Micropython will use the CFLAGS that we export
+export CFLAGS
+
+# Tell micropython to use the correct compiler
+MPY_OVERRIDES = "CROSS_COMPILE=$(CROSSDEV)"
+
+ifneq ($(CONFIG_INTERPRETERS_MICROPYTHON_SOCKET),y)
+MPY_OVERRIDES += "MICROPY_PY_SOCKET=0"
+endif
+
+ifeq ($(CONFIG_INTERPRETERS_MICROPYTHON_USSL),y)
+ifeq ($(CONFIG_INTERPRETERS_MICROPYTHON_MBEDTLS),y)
+MPY_OVERRIDES += "MICROPY_PY_MBEDTLS=1"
+endif
+else
+MPY_OVERRIDES += "MICROPY_PY_USSL=0"
+endif
+
+micropython:
+	$(Q) git clone https://github.com/mransom-campbell/micropython.git -b nuttx
+	$(MAKE) -C $(MPY_PORT_DIR) submodules VARIANT=nuttx
+	# build mpy-cross
+	$(MAKE) -C $(MPY_DIR)/mpy-cross
+
+
+.PHONY: micropython_make
+micropython_make: micropython
+	@echo "Calling MPY Make"
+	$(MAKE) -C $(MPY_PORT_DIR) lib VARIANT=nuttx $(MPY_OVERRIDES)
+	$(CROSSDEV)ar -x $(MPY_PORT_DIR)/libmicropython.a
+
+context:: micropython_make
+
+clean::
+	$(Q) test ! -d $(MPY_PORT_DIR) || make -C $(MPY_PORT_DIR) clean VARIANT=nuttx
+
+distclean::
+	$(call DELDIR, micropython)
+
+# doesn't work for some reason
+#$(MPY_PORT_DIR)/libmicropython.a: micropython
+
+include $(APPDIR)/Application.mk