text: /*
   * This file is part of the MicroPython project, http://micropython.org/
   *
   * The MIT License (MIT)
   *
   * Copyright (c) 2014 Damien P. George
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * 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:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * 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,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  
  #include <stdio.h>
  #include <string.h>
  
  #include "py/compile.h"
  #include "py/runtime.h"
  #include "py/stackctrl.h"
  #include "py/mperrno.h"
  #include "py/mphal.h"
  #include "py/gc.h"
  #include "lib/mp-readline/readline.h"
  #include "lib/utils/pyexec.h"
  #include "gccollect.h"
  #include "user_interface.h"
  
  STATIC char heap[36 * 1024];
  
  STATIC void mp_reset(void) {
      mp_stack_set_top((void*)0x40000000);
      mp_stack_set_limit(8192);
      mp_hal_init();
      gc_init(heap, heap + sizeof(heap));
      mp_init();
      mp_obj_list_init(mp_sys_path, 0);
      mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR_)); // current dir (or base dir of the script)
      mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_lib));
      mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_));
      mp_obj_list_init(mp_sys_argv, 0);
      #if MICROPY_EMIT_XTENSA || MICROPY_EMIT_INLINE_XTENSA
      extern void esp_native_code_init(void);
      esp_native_code_init();
      #endif
      pin_init0();
      readline_init0();
      dupterm_task_init();
  #if MICROPY_MODULE_FROZEN
      pyexec_frozen_module("_boot.py");
      pyexec_file("boot.py");
      if (pyexec_mode_kind == PYEXEC_MODE_FRIENDLY_REPL) {
          pyexec_file("main.py");
      }
  #endif
  }
  
  void soft_reset(void) {
      mp_hal_stdout_tx_str("PYB: soft reboot\r\n");
      mp_hal_delay_us(10000); // allow UART to flush output
      mp_reset();
      #if MICROPY_REPL_EVENT_DRIVEN
      pyexec_event_repl_init();
      #endif
  }
  
  void init_done(void) {
      #if MICROPY_REPL_EVENT_DRIVEN
      uart_task_init();
      #endif
      mp_reset();
      mp_hal_stdout_tx_str("\r\n");
      #if MICROPY_REPL_EVENT_DRIVEN
      pyexec_event_repl_init();
      #endif
  
      #if !MICROPY_REPL_EVENT_DRIVEN
  soft_reset:
      for (;;) {
          if (pyexec_mode_kind == PYEXEC_MODE_RAW_REPL) {
              if (pyexec_raw_repl() != 0) {
                  break;
              }
          } else {
              if (pyexec_friendly_repl() != 0) {
                  break;
              }
          }
      }
      soft_reset();
      goto soft_reset;
      #endif
  }
  
  void user_init(void) {
      system_init_done_cb(init_done);
  }
  
  #if !MICROPY_VFS
  mp_lexer_t *mp_lexer_new_from_file(const char *filename) {
      mp_raise_OSError(MP_ENOENT);
  }
  
  mp_import_stat_t mp_import_stat(const char *path) {
      (void)path;
      return MP_IMPORT_STAT_NO_EXIST;
  }
  
  mp_obj_t mp_builtin_open(size_t n_args, const mp_obj_t *args, mp_map_t *kwargs) {
      return mp_const_none;
  }
  MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_open_obj, 1, mp_builtin_open);
  
  #endif
  
  void MP_FASTCODE(nlr_jump_fail)(void *val) {
      printf("NLR jump failed\n");
      for (;;) {
      }
  }
  
  //void __assert(const char *file, int line, const char *func, const char *expr) {
  void __assert(const char *file, int line, const char *expr) {
      printf("Assertion '%s' failed, at file %s:%d\n", expr, file, line);
      for (;;) {
      }
  }
  