Commit ad81a2e6 authored by Damien George's avatar Damien George
Browse files

minimal: Add ability and description to build without the compiler.

parent 3b2fd4df
......@@ -33,3 +33,15 @@ This version of the build will work out-of-the-box on a pyboard (and
anything similar), and will give you a MicroPython REPL on UART1 at 9600
baud. Pin PA13 will also be driven high, and this turns on the red LED on
the pyboard.
## Building without the built-in MicroPython compiler
This minimal port can be built with the built-in MicroPython compiler
disabled. This will reduce the firmware by about 20k on a Thumb2 machine,
and by about 40k on 32-bit x86. Without the compiler the REPL will be
disabled, but pre-compiled scripts can still be executed.
To test out this feature, change the `MICROPY_ENABLE_COMPILER` config
option to "0" in the mpconfigport.h file in this directory. Then
recompile and run the firmware and it will execute the frozentest.py
file.
......@@ -9,6 +9,7 @@
#include "py/gc.h"
#include "lib/utils/pyexec.h"
#if MICROPY_ENABLE_COMPILER
void do_str(const char *src, mp_parse_input_kind_t input_kind) {
mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, src, strlen(src), 0);
if (lex == NULL) {
......@@ -28,6 +29,7 @@ void do_str(const char *src, mp_parse_input_kind_t input_kind) {
mp_obj_print_exception(&mp_plat_print, (mp_obj_t)nlr.ret_val);
}
}
#endif
static char *stack_top;
static char heap[2048];
......@@ -40,6 +42,7 @@ int main(int argc, char **argv) {
gc_init(heap, heap + sizeof(heap));
#endif
mp_init();
#if MICROPY_ENABLE_COMPILER
#if MICROPY_REPL_EVENT_DRIVEN
pyexec_event_repl_init();
for (;;) {
......@@ -53,6 +56,9 @@ int main(int argc, char **argv) {
#endif
//do_str("print('hello world!', list(x+1 for x in range(10)), end='eol\\n')", MP_PARSE_SINGLE_INPUT);
//do_str("for i in range(10):\r\n print(i)", MP_PARSE_FILE_INPUT);
#else
pyexec_frozen_module("frozentest.py");
#endif
mp_deinit();
return 0;
}
......
......@@ -2,6 +2,11 @@
// options to control how Micro Python is built
// You can disable the built-in MicroPython compiler by setting the following
// config option to 0. If you do this then you won't get a REPL prompt, but you
// will still be able to execute pre-compiled scripts, compiled with mpy-cross.
#define MICROPY_ENABLE_COMPILER (1)
#define MICROPY_QSTR_BYTES_IN_HASH (1)
#define MICROPY_QSTR_EXTRA_POOL mp_qstr_frozen_const_pool
#define MICROPY_ALLOC_PATH_MAX (256)
......
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