Damien George
2 years ago
9 changed files with 111 additions and 439 deletions
@ -1,8 +1,25 @@ |
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MPTOP = ../.. |
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CFLAGS += -std=c99 -I. -I$(MPTOP) -DNO_QSTR |
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LDFLAGS += -L./build |
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# This file is part of the MicroPython project, http://micropython.org/
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# The MIT License (MIT)
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# Copyright (c) 2022-2023 Damien P. George
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#
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# This is a very simple makefile that demonstrates how to build the embed port.
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# All it needs to do is build all *.c files in the micropython_embed directory.
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# This makefile would be replaced with your custom build system.
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hello-embed: hello-embed.o -lmicropython |
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EMBED_DIR = micropython_embed |
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PROG = embed |
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-lmicropython: |
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$(MAKE) -f $(MPTOP)/examples/embedding/Makefile.upylib MPTOP=$(MPTOP) |
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CFLAGS += -I. |
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CFLAGS += -I$(EMBED_DIR) |
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CFLAGS += -I$(EMBED_DIR)/port |
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CFLAGS += -Wall -Og |
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SRC += main.c |
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SRC += $(wildcard $(EMBED_DIR)/*/*.c) $(wildcard $(EMBED_DIR)/*/*/*.c) |
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OBJ += $(SRC:.c=.o) |
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$(PROG): $(OBJ) |
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$(CC) -o $@ $^ |
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clean: |
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/bin/rm -f $(OBJ) $(PROG) |
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@ -1,184 +0,0 @@ |
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MPTOP = ../.. |
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-include mpconfigport.mk |
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include $(MPTOP)/py/mkenv.mk |
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all: lib |
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# OS name, for simple autoconfig
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UNAME_S := $(shell uname -s) |
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# include py core make definitions
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include $(MPTOP)/py/py.mk |
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include $(MPTOP)/extmod/extmod.mk |
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INC += -I. |
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INC += -I.. |
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INC += -I$(MPTOP) |
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INC += -I$(MPTOP)/ports/unix |
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INC += -I$(BUILD) |
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|
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# compiler settings
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CWARN = -Wall -Werror |
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CWARN += -Wpointer-arith -Wuninitialized |
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CFLAGS += $(INC) $(CWARN) -std=gnu99 -DUNIX $(CFLAGS_MOD) $(COPT) $(CFLAGS_EXTRA) |
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# Some systems (eg MacOS) need -fno-common so that mp_state_ctx is placed in the BSS.
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CFLAGS += -fno-common |
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# Debugging/Optimization
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ifdef DEBUG |
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CFLAGS += -g |
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COPT = -O0 |
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else |
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COPT = -Os #-DNDEBUG |
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# _FORTIFY_SOURCE is a feature in gcc/glibc which is intended to provide extra
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# security for detecting buffer overflows. Some distros (Ubuntu at the very least)
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# have it enabled by default.
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#
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# gcc already optimizes some printf calls to call puts and/or putchar. When
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# _FORTIFY_SOURCE is enabled and compiling with -O1 or greater, then some
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# printf calls will also be optimized to call __printf_chk (in glibc). Any
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# printfs which get redirected to __printf_chk are then no longer synchronized
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# with printfs that go through mp_printf.
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#
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# In MicroPython, we don't want to use the runtime library's printf but rather
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# go through mp_printf, so that stdout is properly tied into streams, etc.
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# This means that we either need to turn off _FORTIFY_SOURCE or provide our
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# own implementation of __printf_chk. We've chosen to turn off _FORTIFY_SOURCE.
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# It should also be noted that the use of printf in MicroPython is typically
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# quite limited anyways (primarily for debug and some error reporting, etc
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# in the unix version).
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#
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# Information about _FORTIFY_SOURCE seems to be rather scarce. The best I could
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# find was this: https://securityblog.redhat.com/2014/03/26/fortify-and-you/
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# Original patchset was introduced by
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# https://gcc.gnu.org/ml/gcc-patches/2004-09/msg02055.html .
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#
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# Turning off _FORTIFY_SOURCE is only required when compiling with -O1 or greater
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CFLAGS += -U _FORTIFY_SOURCE |
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endif |
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# On OSX, 'gcc' is a symlink to clang unless a real gcc is installed.
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# The unix port of MicroPython on OSX must be compiled with clang,
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# while cross-compile ports require gcc, so we test here for OSX and
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# if necessary override the value of 'CC' set in py/mkenv.mk
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ifeq ($(UNAME_S),Darwin) |
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CC = clang |
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# Use clang syntax for map file
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LDFLAGS_ARCH = -Wl,-map,$@.map |
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else |
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# Use gcc syntax for map file
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LDFLAGS_ARCH = -Wl,-Map=$@.map,--cref |
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endif |
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LDFLAGS += $(LDFLAGS_MOD) $(LDFLAGS_ARCH) -lm $(LDFLAGS_EXTRA) |
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ifeq ($(MICROPY_FORCE_32BIT),1) |
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# Note: you may need to install i386 versions of dependency packages,
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# starting with linux-libc-dev:i386
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ifeq ($(MICROPY_PY_FFI),1) |
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ifeq ($(UNAME_S),Linux) |
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CFLAGS_MOD += -I/usr/include/i686-linux-gnu |
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endif |
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endif |
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endif |
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ifeq ($(MICROPY_USE_READLINE),1) |
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INC += -I$(MPTOP)/shared/readline |
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CFLAGS_MOD += -DMICROPY_USE_READLINE=1 |
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SHARED_SRC_C_EXTRA += readline/readline.c |
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endif |
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ifeq ($(MICROPY_USE_READLINE),2) |
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CFLAGS_MOD += -DMICROPY_USE_READLINE=2 |
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LDFLAGS_MOD += -lreadline |
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# the following is needed for BSD
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#LDFLAGS_MOD += -ltermcap
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endif |
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ifeq ($(MICROPY_PY_TIME),1) |
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CFLAGS_MOD += -DMICROPY_PY_TIME=1 |
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SRC_MOD += modtime.c |
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endif |
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ifeq ($(MICROPY_PY_TERMIOS),1) |
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CFLAGS_MOD += -DMICROPY_PY_TERMIOS=1 |
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SRC_MOD += modtermios.c |
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endif |
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ifeq ($(MICROPY_PY_SOCKET),1) |
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CFLAGS_MOD += -DMICROPY_PY_SOCKET=1 |
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SRC_MOD += modsocket.c |
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endif |
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ifeq ($(MICROPY_PY_FFI),1) |
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ifeq ($(MICROPY_STANDALONE),1) |
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LIBFFI_CFLAGS_MOD := -I$(shell ls -1d $(MPTOP)/lib/libffi/build_dir/out/lib/libffi-*/include) |
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ifeq ($(MICROPY_FORCE_32BIT),1) |
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LIBFFI_LDFLAGS_MOD = $(MPTOP)/lib/libffi/build_dir/out/lib32/libffi.a |
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else |
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LIBFFI_LDFLAGS_MOD = $(MPTOP)/lib/libffi/build_dir/out/lib/libffi.a |
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endif |
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else |
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LIBFFI_CFLAGS_MOD := $(shell pkg-config --cflags libffi) |
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LIBFFI_LDFLAGS_MOD := $(shell pkg-config --libs libffi) |
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endif |
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ifeq ($(UNAME_S),Linux) |
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LIBFFI_LDFLAGS_MOD += -ldl |
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endif |
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CFLAGS_MOD += $(LIBFFI_CFLAGS_MOD) -DMICROPY_PY_FFI=1 |
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LDFLAGS_MOD += $(LIBFFI_LDFLAGS_MOD) |
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SRC_MOD += modffi.c |
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endif |
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MAIN_C = main.c |
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# source files
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SRC_C = $(addprefix ports/unix/,\
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$(MAIN_C) \
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gccollect.c \
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unix_mphal.c \
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input.c \
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modmachine.c \
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moduselect.c \
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alloc.c \
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coverage.c \
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fatfs_port.c \
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$(SRC_MOD) \
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) |
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SHARED_SRC_C = $(addprefix shared/,\
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libc/printf.c \
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runtime/gchelper_generic.c \
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timeutils/timeutils.c \
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$(SHARED_SRC_C_EXTRA) \
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) |
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OBJ = $(PY_O) |
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OBJ += $(addprefix $(BUILD)/, $(SRC_C:.c=.o)) |
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OBJ += $(addprefix $(BUILD)/, $(SHARED_SRC_C:.c=.o)) |
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# List of sources for qstr extraction
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SRC_QSTR += $(SRC_C) $(SHARED_SRC_C) |
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# Append any auto-generated sources that are needed by sources listed in
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# SRC_QSTR
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SRC_QSTR_AUTO_DEPS += |
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include $(MPTOP)/py/mkrules.mk |
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# Value of configure's --host= option (required for cross-compilation).
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# Deduce it from CROSS_COMPILE by default, but can be overridden.
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ifneq ($(CROSS_COMPILE),) |
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CROSS_COMPILE_HOST = --host=$(patsubst %-,%,$(CROSS_COMPILE)) |
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else |
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CROSS_COMPILE_HOST = |
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endif |
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deplibs: libffi |
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# install-exec-recursive & install-data-am targets are used to avoid building
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# docs and depending on makeinfo
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libffi: |
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cd $(MPTOP)/lib/libffi; git clean -d -x -f |
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cd $(MPTOP)/lib/libffi; ./autogen.sh |
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mkdir -p $(MPTOP)/lib/libffi/build_dir; cd $(MPTOP)/lib/libffi/build_dir; \
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../configure $(CROSS_COMPILE_HOST) --prefix=$$PWD/out CC="$(CC)" CXX="$(CXX)" LD="$(LD)"; \
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make install-exec-recursive; make -C include install-data-am |
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@ -1,67 +1,37 @@ |
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Example of embedding MicroPython in a standalone C application |
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============================================================== |
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This directory contains a (very simple!) example of how to embed a MicroPython |
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in an existing C application. |
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A C application is represented by the file `hello-embed.c`. It executes a simple |
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Python statement which prints to the standard output. |
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This directory contains a simple example of how to embed MicroPython in an |
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existing C application. |
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A C application is represented here by the file `main.c`. It executes two |
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simple Python scripts which print things to the standard output. |
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Building the example |
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-------------------- |
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Building the example is as simple as running: |
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make |
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It's worth to trace what's happening behind the scenes though: |
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1. As a first step, a MicroPython library is built. This is handled by a |
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separate makefile, `Makefile.upylib`. It is more or less complex, but the |
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good news is that you won't need to change anything in it, just use it |
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as is, the main `Makefile` shows how. What may require editing though is |
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a MicroPython configuration file. MicroPython is highly configurable, so |
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you would need to build a library suiting your application well, while |
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not bloating its size. Check the options in the file `mpconfigport.h`. |
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Included is a copy of the "minimal" Unix port, which should be a good start |
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for minimal embedding. For the list of all available options, see |
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`py/mpconfig.h`. |
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First build the embed port using: |
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2. Once the MicroPython library is built, your application is compiled |
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and linked it. The main Makefile is very simple and shows that the changes |
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you would need to do to your application's `Makefile` (or other build |
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configuration) are also simple: |
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$ make -f micropython_embed.mk |
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a) You would need to use C99 standard (you're using this 15+ years old |
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standard already, not a 25+ years old one, right?). |
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This will generate the `micropython_embed` directory which is a self-contained |
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copy of MicroPython suitable for embedding. The .c files in this directory need |
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to be compiled into your project, in whatever way your project can do that. The |
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example here uses make and a provided `Makefile`. |
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b) You need to provide a path to MicroPython's top-level dir, for includes. |
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To build the example project, based on `main.c`, use: |
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c) You need to include `-DNO_QSTR` compile-time flag. |
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$ make |
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d) Otherwise, just link with the MicroPython library produced in step 1. |
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That will create an exacutable called `embed` which you can run: |
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$ ./embed |
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Out of tree build |
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----------------- |
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This example is set up to work out of the box, being part of the MicroPython |
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tree. Your application of course will be outside of its tree, but the |
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only thing you need to do is to pass `MPTOP` variable pointing to |
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MicroPython directory to both Makefiles (in this example, the main Makefile |
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automatically passes it to `Makefile.upylib`; in your own Makefile, don't forget |
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to use a suitable value). |
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|
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A practical way to embed MicroPython in your application is to include it |
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as a git submodule. Suppose you included it as `libs/micropython`. Then in |
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your main Makefile you would have something like: |
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~~~ |
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MPTOP = libs/micropython |
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my_app: $(MY_OBJS) -lmicropython |
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-lmicropython: |
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$(MAKE) -f $(MPTOP)/examples/embedding/Makefile.upylib MPTOP=$(MPTOP) |
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~~~ |
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tree. Your application will be outside of this tree, but the only thing you |
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need to do for that is to change `MICROPYTHON_TOP` (found in `micropython_embed.mk`) |
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to point to the location of the MicroPython repository. The MicroPython |
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repository may, for example, be a git submodule in your project. |
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@ -1,76 +0,0 @@ |
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/*
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* This file is part of the MicroPython project, http://micropython.org/
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* |
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* The MIT License (MIT) |
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* |
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* Copyright (c) 2016 Paul Sokolovsky |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in |
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* all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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* THE SOFTWARE. |
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*/ |
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|
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#include <string.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include "py/builtin.h" |
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#include "py/compile.h" |
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#include "py/runtime.h" |
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#include "py/gc.h" |
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#include "py/stackctrl.h" |
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static char heap[16384]; |
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mp_obj_t execute_from_str(const char *str) { |
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nlr_buf_t nlr; |
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if (nlr_push(&nlr) == 0) { |
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qstr src_name = 1/*MP_QSTR_*/; |
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mp_lexer_t *lex = mp_lexer_new_from_str_len(src_name, str, strlen(str), false); |
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mp_parse_tree_t pt = mp_parse(lex, MP_PARSE_FILE_INPUT); |
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mp_obj_t module_fun = mp_compile(&pt, src_name, false); |
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mp_call_function_0(module_fun); |
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nlr_pop(); |
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return 0; |
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} else { |
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// uncaught exception
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return (mp_obj_t)nlr.ret_val; |
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} |
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} |
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int main() { |
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// Initialized stack limit
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mp_stack_set_limit(40000 * (sizeof(void *) / 4)); |
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// Initialize heap
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gc_init(heap, heap + sizeof(heap)); |
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// Initialize interpreter
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mp_init(); |
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const char str[] = "print('Hello world of easy embedding!')"; |
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if (execute_from_str(str)) { |
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printf("Error\n"); |
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} |
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} |
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uint mp_import_stat(const char *path) { |
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return MP_IMPORT_STAT_NO_EXIST; |
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} |
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void nlr_jump_fail(void *val) { |
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printf("FATAL: uncaught NLR %p\n", val); |
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exit(1); |
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} |
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@ -0,0 +1,44 @@ |
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/* This file is part of the MicroPython project, http://micropython.org/
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* The MIT License (MIT) |
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* Copyright (c) 2022-2023 Damien P. George |
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*/ |
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#include "port/micropython_embed.h" |
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// This is example 1 script, which will be compiled and executed.
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static const char *example_1 = |
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"print('hello world!', list(x + 1 for x in range(10)), end='eol\\n')"; |
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// This is example 2 script, which will be compiled and executed.
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static const char *example_2 = |
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"for i in range(10):\n" |
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" print('iter {:08}'.format(i))\n" |
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"\n" |
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"try:\n" |
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" 1//0\n" |
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"except Exception as er:\n" |
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" print('caught exception', repr(er))\n" |
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"\n" |
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"import gc\n" |
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"print('run GC collect')\n" |
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"gc.collect()\n" |
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"\n" |
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"print('finish')\n" |
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; |
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// This array is the MicroPython GC heap.
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static char heap[8 * 1024]; |
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int main() { |
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// Initialise MicroPython.
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mp_embed_init(&heap[0], sizeof(heap)); |
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// Run the example scripts (they will be compiled first).
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mp_embed_exec_str(example_1); |
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mp_embed_exec_str(example_2); |
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// Deinitialise MicroPython.
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mp_embed_deinit(); |
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return 0; |
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} |
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@ -0,0 +1,9 @@ |
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# This file is part of the MicroPython project, http://micropython.org/
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# The MIT License (MIT)
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# Copyright (c) 2022-2023 Damien P. George
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# Set the location of the top of the MicroPython repository.
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MICROPYTHON_TOP = ../.. |
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# Include the main makefile fragment to build the MicroPython component.
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include $(MICROPYTHON_TOP)/ports/embed/embed.mk |
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@ -1 +1,15 @@ |
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#include "mpconfigport_minimal.h" |
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/* This file is part of the MicroPython project, http://micropython.org/
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* The MIT License (MIT) |
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* Copyright (c) 2022-2023 Damien P. George |
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*/ |
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// Include common MicroPython embed configuration.
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#include <port/mpconfigport_common.h> |
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// Use the minimal starting configuration (disables all optional features).
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#define MICROPY_CONFIG_ROM_LEVEL (MICROPY_CONFIG_ROM_LEVEL_MINIMUM) |
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// MicroPython configuration.
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#define MICROPY_ENABLE_COMPILER (1) |
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#define MICROPY_ENABLE_GC (1) |
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#define MICROPY_PY_GC (1) |
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@ -1,122 +0,0 @@ |
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/*
|
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* This file is part of the MicroPython project, http://micropython.org/
|
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* |
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* The MIT License (MIT) |
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* |
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* Copyright (c) 2015 Damien P. George |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
|||
* in the Software without restriction, including without limitation the rights |
|||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
|||
* copies of the Software, and to permit persons to whom the Software is |
|||
* furnished to do so, subject to the following conditions: |
|||
* |
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* The above copyright notice and this permission notice shall be included in |
|||
* all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
|||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
|||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
|||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
|||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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* THE SOFTWARE. |
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*/ |
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|
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// options to control how MicroPython is built
|
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|
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#define MICROPY_ALLOC_PATH_MAX (PATH_MAX) |
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#define MICROPY_ENABLE_GC (1) |
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#define MICROPY_ENABLE_FINALISER (0) |
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#define MICROPY_STACK_CHECK (0) |
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#define MICROPY_COMP_CONST (0) |
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#define MICROPY_MEM_STATS (0) |
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#define MICROPY_DEBUG_PRINTERS (0) |
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#define MICROPY_READER_POSIX (1) |
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#define MICROPY_KBD_EXCEPTION (1) |
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#define MICROPY_HELPER_REPL (1) |
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#define MICROPY_HELPER_LEXER_UNIX (1) |
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#define MICROPY_ENABLE_SOURCE_LINE (0) |
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#define MICROPY_ERROR_REPORTING (MICROPY_ERROR_REPORTING_TERSE) |
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#define MICROPY_WARNINGS (0) |
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#define MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF (0) |
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#define MICROPY_FLOAT_IMPL (MICROPY_FLOAT_IMPL_NONE) |
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#define MICROPY_LONGINT_IMPL (MICROPY_LONGINT_IMPL_NONE) |
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#define MICROPY_STREAMS_NON_BLOCK (0) |
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#define MICROPY_OPT_COMPUTED_GOTO (0) |
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#define MICROPY_CAN_OVERRIDE_BUILTINS (0) |
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#define MICROPY_BUILTIN_METHOD_CHECK_SELF_ARG (0) |
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#define MICROPY_CPYTHON_COMPAT (0) |
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#define MICROPY_PY_BUILTINS_BYTEARRAY (0) |
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#define MICROPY_PY_BUILTINS_MEMORYVIEW (0) |
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#define MICROPY_PY_BUILTINS_COMPILE (0) |
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#define MICROPY_PY_BUILTINS_ENUMERATE (0) |
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#define MICROPY_PY_BUILTINS_FILTER (0) |
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#define MICROPY_PY_BUILTINS_FROZENSET (0) |
|||
#define MICROPY_PY_BUILTINS_REVERSED (0) |
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#define MICROPY_PY_BUILTINS_SET (0) |
|||
#define MICROPY_PY_BUILTINS_SLICE (0) |
|||
#define MICROPY_PY_BUILTINS_STR_UNICODE (0) |
|||
#define MICROPY_PY_BUILTINS_PROPERTY (0) |
|||
#define MICROPY_PY_BUILTINS_MIN_MAX (0) |
|||
#define MICROPY_PY___FILE__ (0) |
|||
#define MICROPY_PY_MICROPYTHON_MEM_INFO (0) |
|||
#define MICROPY_PY_GC (0) |
|||
#define MICROPY_PY_GC_COLLECT_RETVAL (0) |
|||
#define MICROPY_PY_ARRAY (0) |
|||
#define MICROPY_PY_COLLECTIONS (0) |
|||
#define MICROPY_PY_MATH (0) |
|||
#define MICROPY_PY_CMATH (0) |
|||
#define MICROPY_PY_IO (0) |
|||
#define MICROPY_PY_STRUCT (0) |
|||
#define MICROPY_PY_SYS (1) |
|||
#define MICROPY_PY_SYS_EXIT (0) |
|||
#define MICROPY_PY_SYS_PLATFORM "linux" |
|||
#define MICROPY_PY_SYS_MAXSIZE (0) |
|||
#define MICROPY_PY_SYS_PATH_DEFAULT ".frozen" |
|||
#define MICROPY_PY_SYS_STDFILES (0) |
|||
#define MICROPY_PY_CMATH (0) |
|||
#define MICROPY_PY_UCTYPES (0) |
|||
#define MICROPY_PY_UZLIB (0) |
|||
#define MICROPY_PY_UJSON (0) |
|||
#define MICROPY_PY_UOS (1) |
|||
#define MICROPY_PY_URE (0) |
|||
#define MICROPY_PY_UHEAPQ (0) |
|||
#define MICROPY_PY_UHASHLIB (0) |
|||
#define MICROPY_PY_UBINASCII (0) |
|||
|
|||
//////////////////////////////////////////
|
|||
// Do not change anything beyond this line
|
|||
//////////////////////////////////////////
|
|||
|
|||
#if !(defined(MICROPY_GCREGS_SETJMP) || defined(__x86_64__) || defined(__i386__) || defined(__thumb2__) || defined(__thumb__) || defined(__arm__)) |
|||
// Fall back to setjmp() implementation for discovery of GC pointers in registers.
|
|||
#define MICROPY_GCREGS_SETJMP (1) |
|||
#endif |
|||
|
|||
// type definitions for the specific machine
|
|||
|
|||
#ifdef __LP64__ |
|||
typedef long mp_int_t; // must be pointer size
|
|||
typedef unsigned long mp_uint_t; // must be pointer size
|
|||
#else |
|||
// These are definitions for machines where sizeof(int) == sizeof(void*),
|
|||
// regardless for actual size.
|
|||
typedef int mp_int_t; // must be pointer size
|
|||
typedef unsigned int mp_uint_t; // must be pointer size
|
|||
#endif |
|||
|
|||
// Cannot include <sys/types.h>, as it may lead to symbol name clashes
|
|||
#if _FILE_OFFSET_BITS == 64 && !defined(__LP64__) |
|||
typedef long long mp_off_t; |
|||
#else |
|||
typedef long mp_off_t; |
|||
#endif |
|||
|
|||
// We need to provide a declaration/definition of alloca()
|
|||
#ifdef __FreeBSD__ |
|||
#include <stdlib.h> |
|||
#else |
|||
#include <alloca.h> |
|||
#endif |
|||
Loading…
Reference in new issue