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Add pyb.hard_reset, and make sys.exit() or raise SystemExit do a soft reset.

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This commit is contained in:
Dave Hylands 2014-10-21 23:04:38 -07:00 committed by Damien George
parent 3e42570538
commit 8d62bbd46a
5 changed files with 52 additions and 12 deletions
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14
stmhal/main.c
View File

@ -458,7 +458,11 @@ soft_reset:
const char *boot_py = "boot.py";
FRESULT res = f_stat(boot_py, NULL);
if (res == FR_OK) {
if (!pyexec_file(boot_py)) {
int ret = pyexec_file(boot_py);
if (ret & PYEXEC_FORCED_EXIT) {
goto soft_reset_exit;
}
if (!ret) {
flash_error(4);
}
}
@ -517,7 +521,11 @@ soft_reset:
}
FRESULT res = f_stat(main_py, NULL);
if (res == FR_OK) {
if (!pyexec_file(main_py)) {
int ret = pyexec_file(main_py);
if (ret & PYEXEC_FORCED_EXIT) {
goto soft_reset_exit;
}
if (!ret) {
flash_error(3);
}
}
@ -537,6 +545,8 @@ soft_reset:
}
}
soft_reset_exit:
// soft reset
printf("PYB: sync filesystems\n");

10
stmhal/modpyb.c
View File

@ -88,6 +88,15 @@ STATIC NORETURN mp_obj_t pyb_bootloader(void) {
}
STATIC MP_DEFINE_CONST_FUN_OBJ_0(pyb_bootloader_obj, pyb_bootloader);
/// \function hard_reset()
/// Resets the pyboard in a manner similar to pushing the external RESET
/// button.
STATIC mp_obj_t pyb_hard_reset(void) {
NVIC_SystemReset();
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_0(pyb_hard_reset_obj, pyb_hard_reset);
/// \function info([dump_alloc_table])
/// Print out lots of information about the board.
STATIC mp_obj_t pyb_info(mp_uint_t n_args, const mp_obj_t *args) {
@ -443,6 +452,7 @@ STATIC const mp_map_elem_t pyb_module_globals_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_pyb) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_bootloader), (mp_obj_t)&pyb_bootloader_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_hard_reset), (mp_obj_t)&pyb_hard_reset_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_info), (mp_obj_t)&pyb_info_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_unique_id), (mp_obj_t)&pyb_unique_id_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_freq), (mp_obj_t)&pyb_freq_obj },

37
stmhal/pyexec.c
View File

@ -56,7 +56,7 @@ STATIC bool repl_display_debugging_info = 0;
// parses, compiles and executes the code in the lexer
// frees the lexer before returning
bool parse_compile_execute(mp_lexer_t *lex, mp_parse_input_kind_t input_kind, bool is_repl) {
int parse_compile_execute(mp_lexer_t *lex, mp_parse_input_kind_t input_kind, bool is_repl) {
mp_parse_error_kind_t parse_error_kind;
mp_parse_node_t pn = mp_parse(lex, input_kind, &parse_error_kind);
qstr source_name = mp_lexer_source_name(lex);
@ -65,7 +65,7 @@ bool parse_compile_execute(mp_lexer_t *lex, mp_parse_input_kind_t input_kind, bo
// parse error
mp_parse_show_exception(lex, parse_error_kind);
mp_lexer_free(lex);
return false;
return 0;
}
mp_lexer_free(lex);
@ -74,24 +74,35 @@ bool parse_compile_execute(mp_lexer_t *lex, mp_parse_input_kind_t input_kind, bo
if (mp_obj_is_exception_instance(module_fun)) {
mp_obj_print_exception(module_fun);
return false;
return 0;
}
nlr_buf_t nlr;
bool ret;
int ret;
uint32_t start = HAL_GetTick();
if (nlr_push(&nlr) == 0) {
usb_vcp_set_interrupt_char(VCP_CHAR_CTRL_C); // allow ctrl-C to interrupt us
mp_call_function_0(module_fun);
usb_vcp_set_interrupt_char(VCP_CHAR_NONE); // disable interrupt
nlr_pop();
ret = true;
ret = 1;
} else {
// uncaught exception
// FIXME it could be that an interrupt happens just before we disable it here
usb_vcp_set_interrupt_char(VCP_CHAR_NONE); // disable interrupt
// check for SystemExit
mp_obj_t exc = (mp_obj_t)nlr.ret_val;
if (mp_obj_is_subclass_fast(mp_obj_get_type(exc), &mp_type_SystemExit)) {
// None is an exit value of 0; an int is its value; anything else is 1
mp_obj_t exit_val = mp_obj_exception_get_value(exc);
mp_int_t val = 0;
if (exit_val != mp_const_none && !mp_obj_get_int_maybe(exit_val, &val)) {
val = 1;
}
return PYEXEC_FORCED_EXIT | (val & 255);
}
mp_obj_print_exception((mp_obj_t)nlr.ret_val);
ret = false;
ret = 0;
}
// display debugging info if wanted
@ -160,14 +171,17 @@ raw_repl_reset:
// exit for a soft reset
stdout_tx_str("\r\n");
vstr_clear(&line);
return 1;
return PYEXEC_FORCED_EXIT;
}
mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, line.buf, line.len, 0);
if (lex == NULL) {
printf("MemoryError\n");
} else {
parse_compile_execute(lex, MP_PARSE_FILE_INPUT, false);
int ret = parse_compile_execute(lex, MP_PARSE_FILE_INPUT, false);
if (ret & PYEXEC_FORCED_EXIT) {
return ret;
}
}
// indicate end of output with EOF character
@ -229,7 +243,7 @@ friendly_repl_reset:
// exit for a soft reset
stdout_tx_str("\r\n");
vstr_clear(&line);
return 1;
return PYEXEC_FORCED_EXIT;
} else if (vstr_len(&line) == 0) {
continue;
}
@ -247,7 +261,10 @@ friendly_repl_reset:
if (lex == NULL) {
printf("MemoryError\n");
} else {
parse_compile_execute(lex, MP_PARSE_SINGLE_INPUT, true);
int ret = parse_compile_execute(lex, MP_PARSE_SINGLE_INPUT, true);
if (ret & PYEXEC_FORCED_EXIT) {
return ret;
}
}
}
}

2
stmhal/pyexec.h
View File

@ -31,6 +31,8 @@ typedef enum {
extern pyexec_mode_kind_t pyexec_mode_kind;
#define PYEXEC_FORCED_EXIT (0x100)
int pyexec_raw_repl(void);
int pyexec_friendly_repl(void);
bool pyexec_file(const char *filename);

1
stmhal/qstrdefsport.h
View File

@ -30,6 +30,7 @@ Q(help)
Q(pyb)
Q(unique_id)
Q(bootloader)
Q(hard_reset)
Q(info)
Q(sd_test)
Q(present)