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circuitpython/main.c
Scott Shawcroft dc76306cfa
Enable a BLE workflow 
nRF CircuitPython boards will now provide the file transfer
service defined here: https://github.com/adafruit/Adafruit_CircuitPython_BLE_File_Transfer

USB capable boards will only advertise if previously bonded to a
device or if the reset button is pressed during the fast blue
flashes on start up. When pressed, the board will restart again but
the blue period will not flash.

Boards without USB will always advertise.

When previously bonded, the advertisement is private so that no
other peers can connect. If advertising publicly, the tx power is
lowered to reduce the likelihood of bonding from a distance.

This PR also fixes issues with loading identities of bonded peers
so that our address can now be resolved and we can resolve others'
addresses when scanning.
2021-06-24 12:59:14 -07:00

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2016-2017 Scott Shawcroft for Adafruit Industries
*
* 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 <stdint.h>
#include <string.h>
#include "extmod/vfs.h"
#include "extmod/vfs_fat.h"
#include "genhdr/mpversion.h"
#include "py/nlr.h"
#include "py/compile.h"
#include "py/frozenmod.h"
#include "py/mphal.h"
#include "py/runtime.h"
#include "py/repl.h"
#include "py/gc.h"
#include "py/stackctrl.h"
#include "lib/mp-readline/readline.h"
#include "lib/utils/pyexec.h"
#include "background.h"
#include "mpconfigboard.h"
#include "supervisor/background_callback.h"
#include "supervisor/board.h"
#include "supervisor/cpu.h"
#include "supervisor/filesystem.h"
#include "supervisor/memory.h"
#include "supervisor/port.h"
#include "supervisor/serial.h"
#include "supervisor/shared/autoreload.h"
#include "supervisor/shared/safe_mode.h"
#include "supervisor/shared/stack.h"
#include "supervisor/shared/status_leds.h"
#include "supervisor/shared/translate.h"
#include "supervisor/shared/workflow.h"
#include "supervisor/usb.h"
#include "supervisor/workflow.h"
#include "shared-bindings/microcontroller/__init__.h"
#include "shared-bindings/microcontroller/Processor.h"
#include "shared-bindings/supervisor/Runtime.h"
#if CIRCUITPY_ALARM
#include "shared-bindings/alarm/__init__.h"
#endif
#if CIRCUITPY_BLEIO
#include "shared-bindings/_bleio/__init__.h"
#include "supervisor/shared/bluetooth.h"
#endif
#if CIRCUITPY_BOARD
#include "shared-module/board/__init__.h"
#endif
#if CIRCUITPY_CANIO
#include "common-hal/canio/CAN.h"
#endif
#if CIRCUITPY_DISPLAYIO
#include "shared-module/displayio/__init__.h"
#endif
#if CIRCUITPY_KEYPAD
#include "shared-module/keypad/__init__.h"
#endif
#if CIRCUITPY_MEMORYMONITOR
#include "shared-module/memorymonitor/__init__.h"
#endif
#if CIRCUITPY_NETWORK
#include "shared-module/network/__init__.h"
#endif
#if CIRCUITPY_USB_HID
#include "shared-module/usb_hid/__init__.h"
#endif
#if CIRCUITPY_WIFI
#include "shared-bindings/wifi/__init__.h"
#endif
#if MICROPY_ENABLE_PYSTACK
static size_t PLACE_IN_DTCM_BSS(_pystack[CIRCUITPY_PYSTACK_SIZE / sizeof(size_t)]);
#endif
static void reset_devices(void) {
#if CIRCUITPY_BLEIO_HCI
bleio_reset();
#endif
}
STATIC void start_mp(supervisor_allocation* heap) {
autoreload_stop();
supervisor_workflow_reset();
// Stack limit should be less than real stack size, so we have a chance
// to recover from limit hit. (Limit is measured in bytes.)
mp_stack_ctrl_init();
if (stack_get_bottom() != NULL) {
mp_stack_set_limit(stack_get_length() - 1024);
}
#if MICROPY_MAX_STACK_USAGE
// _ezero (same as _ebss) is an int, so start 4 bytes above it.
if (stack_get_bottom() != NULL) {
mp_stack_set_bottom(stack_get_bottom());
mp_stack_fill_with_sentinel();
}
#endif
// Sync the file systems in case any used RAM from the GC to cache. As soon
// as we re-init the GC all bets are off on the cache.
filesystem_flush();
// Clear the readline history. It references the heap we're about to destroy.
readline_init0();
#if MICROPY_ENABLE_PYSTACK
mp_pystack_init(_pystack, _pystack + (sizeof(_pystack) / sizeof(size_t)));
#endif
#if MICROPY_ENABLE_GC
gc_init(heap->ptr, heap->ptr + get_allocation_length(heap) / 4);
#endif
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_));
// Frozen modules are in their own pseudo-dir, e.g., ".frozen".
// Prioritize .frozen over /lib.
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_FROZEN_FAKE_DIR_QSTR));
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_lib));
mp_obj_list_init(mp_sys_argv, 0);
#if CIRCUITPY_ALARM
// Record which alarm woke us up, if any. An object may be created so the heap must be functional.
shared_alarm_save_wake_alarm(common_hal_alarm_create_wake_alarm());
// Reset alarm module only after we retrieved the wakeup alarm.
alarm_reset();
#endif
#if CIRCUITPY_NETWORK
network_module_init();
#endif
}
STATIC void stop_mp(void) {
#if CIRCUITPY_NETWORK
network_module_deinit();
#endif
#if MICROPY_VFS
mp_vfs_mount_t *vfs = MP_STATE_VM(vfs_mount_table);
// Unmount all heap allocated vfs mounts.
while (gc_nbytes(vfs) > 0) {
vfs = vfs->next;
}
MP_STATE_VM(vfs_mount_table) = vfs;
MP_STATE_VM(vfs_cur) = vfs;
#endif
background_callback_reset();
#if CIRCUITPY_USB
usb_background();
#endif
gc_deinit();
}
#define STRING_LIST(...) {__VA_ARGS__, ""}
// Look for the first file that exists in the list of filenames, using mp_import_stat().
// Return its index. If no file found, return -1.
STATIC const char* first_existing_file_in_list(const char * const * filenames) {
for (int i = 0; filenames[i] != (char*)""; i++) {
mp_import_stat_t stat = mp_import_stat(filenames[i]);
if (stat == MP_IMPORT_STAT_FILE) {
return filenames[i];
}
}
return NULL;
}
STATIC bool maybe_run_list(const char * const * filenames, pyexec_result_t* exec_result) {
const char* filename = first_existing_file_in_list(filenames);
if (filename == NULL) {
return false;
}
mp_hal_stdout_tx_str(filename);
const compressed_string_t* compressed = translate(" output:\n");
char decompressed[decompress_length(compressed)];
decompress(compressed, decompressed);
mp_hal_stdout_tx_str(decompressed);
pyexec_file(filename, exec_result);
return true;
}
STATIC void cleanup_after_vm(supervisor_allocation* heap) {
// Reset port-independent devices, like CIRCUITPY_BLEIO_HCI.
reset_devices();
// Turn off the display and flush the filesystem before the heap disappears.
#if CIRCUITPY_DISPLAYIO
reset_displays();
#endif
#if CIRCUITPY_MEMORYMONITOR
memorymonitor_reset();
#endif
filesystem_flush();
stop_mp();
free_memory(heap);
supervisor_move_memory();
#if CIRCUITPY_CANIO
common_hal_canio_reset();
#endif
#if CIRCUITPY_KEYPAD
keypad_reset();
#endif
// reset_board_busses() first because it may release pins from the never_reset state, so that
// reset_port() can reset them.
#if CIRCUITPY_BOARD
reset_board_busses();
#endif
reset_port();
reset_board();
}
STATIC void print_code_py_status_message(safe_mode_t safe_mode) {
if (autoreload_is_enabled()) {
serial_write_compressed(translate("Auto-reload is on. Simply save files over USB to run them or enter REPL to disable.\n"));
} else {
serial_write_compressed(translate("Auto-reload is off.\n"));
}
if (safe_mode != NO_SAFE_MODE) {
serial_write_compressed(translate("Running in safe mode! Not running saved code.\n"));
}
}
STATIC bool run_code_py(safe_mode_t safe_mode) {
bool serial_connected_at_start = serial_connected();
bool printed_safe_mode_message = false;
#if CIRCUITPY_AUTORELOAD_DELAY_MS > 0
if (serial_connected_at_start) {
serial_write("\r\n");
print_code_py_status_message(safe_mode);
print_safe_mode_message(safe_mode);
printed_safe_mode_message = true;
}
#endif
pyexec_result_t result;
result.return_code = 0;
result.exception_type = NULL;
result.exception_line = 0;
bool found_main = false;
if (safe_mode == NO_SAFE_MODE) {
static const char * const supported_filenames[] = STRING_LIST(
"code.txt", "code.py", "main.py", "main.txt");
#if CIRCUITPY_FULL_BUILD
static const char * const double_extension_filenames[] = STRING_LIST(
"code.txt.py", "code.py.txt", "code.txt.txt","code.py.py",
"main.txt.py", "main.py.txt", "main.txt.txt","main.py.py");
#endif
stack_resize();
filesystem_flush();
supervisor_allocation* heap = allocate_remaining_memory();
// Prepare the VM state. Includes an alarm check/reset for sleep.
start_mp(heap);
#if CIRCUITPY_USB
usb_setup_with_vm();
#endif
// This is where the user's python code is actually executed:
found_main = maybe_run_list(supported_filenames, &result);
// If that didn't work, double check the extensions
#if CIRCUITPY_FULL_BUILD
if (!found_main){
found_main = maybe_run_list(double_extension_filenames, &result);
if (found_main) {
serial_write_compressed(translate("WARNING: Your code filename has two extensions\n"));
}
}
#else
(void) found_main;
#endif
// Finished executing python code. Cleanup includes a board reset.
cleanup_after_vm(heap);
if (result.return_code & PYEXEC_FORCED_EXIT) {
return reload_requested;
}
if (reload_requested && result.return_code == PYEXEC_EXCEPTION) {
serial_write_compressed(translate("\nCode stopped by auto-reload.\n"));
} else {
serial_write_compressed(translate("\nCode done running.\n"));
}
}
// Program has finished running.
bool printed_press_any_key = false;
#if CIRCUITPY_DISPLAYIO
size_t time_to_epaper_refresh = 1;
#endif
// Setup LED blinks.
#if CIRCUITPY_STATUS_LED
uint32_t color;
uint8_t blink_count;
bool led_active = false;
#if CIRCUITPY_ALARM
if (result.return_code & PYEXEC_DEEP_SLEEP) {
color = BLACK;
blink_count = 0;
} else
#endif
if (result.return_code != PYEXEC_EXCEPTION) {
if (safe_mode == NO_SAFE_MODE) {
color = ALL_DONE;
blink_count = ALL_DONE_BLINKS;
} else {
color = SAFE_MODE;
blink_count = SAFE_MODE_BLINKS;
}
} else {
color = EXCEPTION;
blink_count = EXCEPTION_BLINKS;
}
size_t pattern_start = supervisor_ticks_ms32();
size_t single_blink_time = (OFF_ON_RATIO + 1) * BLINK_TIME_MS;
size_t blink_time = single_blink_time * blink_count;
size_t total_time = blink_time + LED_SLEEP_TIME_MS;
#endif
#if CIRCUITPY_ALARM
bool fake_sleeping = false;
#endif
bool skip_repl = false;
while (true) {
RUN_BACKGROUND_TASKS;
// If a reload was requested by the supervisor or autoreload, return
if (reload_requested) {
reload_requested = false;
skip_repl = true;
break;
}
// If interrupted by keyboard, return
if (serial_connected() && serial_bytes_available()) {
// Skip REPL if reload was requested.
skip_repl = serial_read() == CHAR_CTRL_D;
if (skip_repl) {
supervisor_set_run_reason(RUN_REASON_REPL_RELOAD);
}
break;
}
// Check for a deep sleep alarm and restart the VM. This can happen if
// an alarm alerts faster than our USB delay or if we pretended to deep
// sleep.
#if CIRCUITPY_ALARM
if (fake_sleeping && common_hal_alarm_woken_from_sleep()) {
serial_write_compressed(translate("Woken up by alarm.\n"));
supervisor_set_run_reason(RUN_REASON_STARTUP);
skip_repl = true;
break;
}
#endif
// If messages haven't been printed yet, print them
if (!printed_press_any_key && serial_connected()) {
if (!serial_connected_at_start) {
print_code_py_status_message(safe_mode);
}
if (!printed_safe_mode_message) {
print_safe_mode_message(safe_mode);
printed_safe_mode_message = true;
}
serial_write("\r\n");
serial_write_compressed(translate("Press any key to enter the REPL. Use CTRL-D to reload.\n"));
printed_press_any_key = true;
}
if (!serial_connected()) {
serial_connected_at_start = false;
printed_press_any_key = false;
}
// Sleep until our next interrupt.
#if CIRCUITPY_ALARM
if (result.return_code & PYEXEC_DEEP_SLEEP) {
// Make sure we have been awake long enough for USB to connect (enumeration delay).
int64_t connecting_delay_ticks = CIRCUITPY_USB_CONNECTED_SLEEP_DELAY * 1024 - port_get_raw_ticks(NULL);
// Until it's safe to decide whether we're real/fake sleeping
if (fake_sleeping) {
// This waits until a pretend deep sleep alarm occurs. They are set
// during common_hal_alarm_set_deep_sleep_alarms. On some platforms
// it may also return due to another interrupt, that's why we check
// for deep sleep alarms above. If it wasn't a deep sleep alarm,
// then we'll idle here again.
common_hal_alarm_pretending_deep_sleep();
} else if (connecting_delay_ticks < 0) {
// Entering deep sleep (may be fake or real.)
board_deinit();
if (!supervisor_workflow_active()) {
// Enter true deep sleep. When we wake up we'll be back at the
// top of main(), not in this loop.
common_hal_alarm_enter_deep_sleep();
// Does not return.
} else {
serial_write_compressed(translate("Pretending to deep sleep until alarm, CTRL-C or file write.\n"));
fake_sleeping = true;
}
} else {
// Loop while checking the time. We can't idle because we don't want to override a
// time alarm set for the deep sleep.
}
} else
#endif
{
// Refresh the ePaper display if we have one. That way it'll show an error message.
#if CIRCUITPY_DISPLAYIO
if (time_to_epaper_refresh > 0) {
time_to_epaper_refresh = maybe_refresh_epaperdisplay();
}
#if !CIRCUITPY_STATUS_LED
port_interrupt_after_ticks(time_to_epaper_refresh);
#endif
#endif
#if CIRCUITPY_STATUS_LED
uint32_t tick_diff = supervisor_ticks_ms32() - pattern_start;
// By default, don't sleep.
size_t time_to_next_change = 0;
if (tick_diff < blink_time) {
uint32_t blink_diff = tick_diff % (single_blink_time);
if (blink_diff >= BLINK_TIME_MS) {
if (led_active) {
new_status_color(BLACK);
status_led_deinit();
led_active = false;
}
time_to_next_change = single_blink_time - blink_diff;
} else {
if (!led_active) {
status_led_init();
new_status_color(color);
led_active = true;
}
time_to_next_change = BLINK_TIME_MS - blink_diff;
}
} else if (tick_diff > total_time) {
pattern_start = supervisor_ticks_ms32();
} else {
if (led_active) {
new_status_color(BLACK);
status_led_deinit();
led_active = false;
}
time_to_next_change = total_time - tick_diff;
}
#if CIRCUITPY_DISPLAYIO
if (time_to_epaper_refresh > 0 && time_to_next_change > 0) {
time_to_next_change = MIN(time_to_next_change, time_to_epaper_refresh);
}
#endif
// time_to_next_change is in ms and ticks are slightly shorter so
// we'll undersleep just a little. It shouldn't matter.
port_interrupt_after_ticks(time_to_next_change);
#endif
port_idle_until_interrupt();
}
}
// Done waiting, start the board back up.
#if CIRCUITPY_STATUS_LED
if (led_active) {
new_status_color(BLACK);
status_led_deinit();
}
#endif
#if CIRCUITPY_ALARM
if (fake_sleeping) {
board_init();
}
#endif
return skip_repl;
}
FIL* boot_output_file;
STATIC void __attribute__ ((noinline)) run_boot_py(safe_mode_t safe_mode) {
// If not in safe mode, run boot before initing USB and capture output in a file.
// There is USB setup to do even if boot.py is not actually run.
const bool ok_to_run = filesystem_present()
&& safe_mode == NO_SAFE_MODE
&& MP_STATE_VM(vfs_mount_table) != NULL;
static const char * const boot_py_filenames[] = STRING_LIST("settings.txt", "settings.py", "boot.py", "boot.txt");
bool skip_boot_output = false;
if (ok_to_run) {
#ifdef CIRCUITPY_BOOT_OUTPUT_FILE
FIL file_pointer;
boot_output_file = &file_pointer;
// Get the base filesystem.
FATFS *fs = &((fs_user_mount_t *) MP_STATE_VM(vfs_mount_table)->obj)->fatfs;
bool have_boot_py = first_existing_file_in_list(boot_py_filenames) != NULL;
// If there's no boot.py file that might write some changing output,
// read the existing copy of CIRCUITPY_BOOT_OUTPUT_FILE and see if its contents
// match the version info we would print anyway. If so, skip writing CIRCUITPY_BOOT_OUTPUT_FILE.
// This saves wear and tear on the flash and also prevents filesystem damage if power is lost
// during the write, which may happen due to bobbling the power connector or weak power.
static const size_t NUM_CHARS_TO_COMPARE = 160;
if (!have_boot_py && f_open(fs, boot_output_file, CIRCUITPY_BOOT_OUTPUT_FILE, FA_READ) == FR_OK) {
char file_contents[NUM_CHARS_TO_COMPARE];
UINT chars_read = 0;
f_read(boot_output_file, file_contents, NUM_CHARS_TO_COMPARE, &chars_read);
f_close(boot_output_file);
skip_boot_output =
// + 2 accounts for \r\n.
chars_read == strlen(MICROPY_FULL_VERSION_INFO) + 2 &&
strncmp(file_contents, MICROPY_FULL_VERSION_INFO, strlen(MICROPY_FULL_VERSION_INFO)) == 0;
}
if (!skip_boot_output) {
// Wait 1.5 seconds before opening CIRCUITPY_BOOT_OUTPUT_FILE for write,
// in case power is momentary or will fail shortly due to, say a low, battery.
if (common_hal_mcu_processor_get_reset_reason() == RESET_REASON_POWER_ON) {
mp_hal_delay_ms(1500);
}
// USB isn't up, so we can write the file.
filesystem_set_internal_writable_by_usb(false);
f_open(fs, boot_output_file, CIRCUITPY_BOOT_OUTPUT_FILE, FA_WRITE | FA_CREATE_ALWAYS);
// Switch the filesystem back to non-writable by Python now instead of later,
// since boot.py might change it back to writable.
filesystem_set_internal_writable_by_usb(true);
// Write version info to boot_out.txt.
mp_hal_stdout_tx_str(MICROPY_FULL_VERSION_INFO);
mp_hal_stdout_tx_str("\r\n");
}
#endif
filesystem_flush();
}
// Do USB setup even if boot.py is not run.
supervisor_allocation* heap = allocate_remaining_memory();
start_mp(heap);
#if CIRCUITPY_USB
// Set up default USB values after boot.py VM starts but before running boot.py.
usb_set_defaults();
#endif
if (ok_to_run) {
bool found_boot = maybe_run_list(boot_py_filenames, NULL);
(void) found_boot;
#ifdef CIRCUITPY_BOOT_OUTPUT_FILE
if (!skip_boot_output) {
f_close(boot_output_file);
filesystem_flush();
}
boot_output_file = NULL;
#endif
}
#if CIRCUITPY_USB
// Some data needs to be carried over from the USB settings in boot.py
// to the next VM, while the heap is still available.
// Its size can vary, so save it temporarily on the stack,
// and then when the heap goes away, copy it in into a
// storage_allocation.
size_t size = usb_boot_py_data_size();
uint8_t usb_boot_py_data[size];
usb_get_boot_py_data(usb_boot_py_data, size);
#endif
cleanup_after_vm(heap);
#if CIRCUITPY_USB
// Now give back the data we saved from the heap going away.
usb_return_boot_py_data(usb_boot_py_data, size);
#endif
}
STATIC int run_repl(void) {
int exit_code = PYEXEC_FORCED_EXIT;
stack_resize();
filesystem_flush();
supervisor_allocation* heap = allocate_remaining_memory();
start_mp(heap);
#if CIRCUITPY_USB
usb_setup_with_vm();
#endif
autoreload_suspend();
// Set the status LED to the REPL color before running the REPL. For
// NeoPixels and DotStars this will be sticky but for PWM or single LED it
// won't. This simplifies pin sharing because they won't be in use when
// actually in the REPL.
#if CIRCUITPY_STATUS_LED
status_led_init();
new_status_color(REPL_RUNNING);
status_led_deinit();
#endif
if (pyexec_mode_kind == PYEXEC_MODE_RAW_REPL) {
exit_code = pyexec_raw_repl();
} else {
exit_code = pyexec_friendly_repl();
}
cleanup_after_vm(heap);
#if CIRCUITPY_STATUS_LED
status_led_init();
new_status_color(BLACK);
status_led_deinit();
#endif
autoreload_resume();
return exit_code;
}
int __attribute__((used)) main(void) {
// initialise the cpu and peripherals
safe_mode_t safe_mode = port_init();
// Turn on RX and TX LEDs if we have them.
init_rxtx_leds();
// Wait briefly to give a reset window where we'll enter safe mode after the reset.
if (safe_mode == NO_SAFE_MODE) {
safe_mode = wait_for_safe_mode_reset();
}
stack_init();
#if CIRCUITPY_BLEIO
// Early init so that a reset press can cause BLE public advertising.
supervisor_bluetooth_init();
#endif
// Create a new filesystem only if we're not in a safe mode.
// A power brownout here could make it appear as if there's
// no SPI flash filesystem, and we might erase the existing one.
filesystem_init(safe_mode == NO_SAFE_MODE, false);
// displays init after filesystem, since they could share the flash SPI
board_init();
// Start the debug serial
serial_early_init();
// Reset everything and prep MicroPython to run boot.py.
reset_port();
// Port-independent devices, like CIRCUITPY_BLEIO_HCI.
reset_devices();
reset_board();
// This is first time we are running CircuitPython after a reset or power-up.
supervisor_set_run_reason(RUN_REASON_STARTUP);
// If not in safe mode turn on autoreload by default but before boot.py in case it wants to change it.
if (safe_mode == NO_SAFE_MODE) {
autoreload_enable();
}
// By default our internal flash is readonly to local python code and
// writable over USB. Set it here so that boot.py can change it.
filesystem_set_internal_concurrent_write_protection(true);
filesystem_set_internal_writable_by_usb(true);
run_boot_py(safe_mode);
// Start USB after giving boot.py a chance to tweak behavior.
#if CIRCUITPY_USB
// Setup USB connection after heap is available.
// It needs the heap to build descriptors.
usb_init();
#endif
// Set up any other serial connection.
serial_init();
#if CIRCUITPY_BLEIO
supervisor_start_bluetooth();
#endif
// Boot script is finished, so now go into REPL/main mode.
int exit_code = PYEXEC_FORCED_EXIT;
bool skip_repl = true;
bool first_run = true;
for (;;) {
if (!skip_repl) {
exit_code = run_repl();
supervisor_set_run_reason(RUN_REASON_REPL_RELOAD);
}
if (exit_code == PYEXEC_FORCED_EXIT) {
if (!first_run) {
serial_write_compressed(translate("soft reboot\n"));
}
first_run = false;
skip_repl = run_code_py(safe_mode);
} else if (exit_code != 0) {
break;
}
}
mp_deinit();
return 0;
}
void gc_collect(void) {
gc_collect_start();
mp_uint_t regs[10];
mp_uint_t sp = cpu_get_regs_and_sp(regs);
// This collects root pointers from the VFS mount table. Some of them may
// have lost their references in the VM even though they are mounted.
gc_collect_root((void**)&MP_STATE_VM(vfs_mount_table), sizeof(mp_vfs_mount_t) / sizeof(mp_uint_t));
background_callback_gc_collect();
#if CIRCUITPY_ALARM
common_hal_alarm_gc_collect();
#endif
#if CIRCUITPY_DISPLAYIO
displayio_gc_collect();
#endif
#if CIRCUITPY_BLEIO
common_hal_bleio_gc_collect();
#endif
#if CIRCUITPY_USB_HID
usb_hid_gc_collect();
#endif
#if CIRCUITPY_WIFI
common_hal_wifi_gc_collect();
#endif
// This naively collects all object references from an approximate stack
// range.
gc_collect_root((void**)sp, ((uint32_t)port_stack_get_top() - sp) / sizeof(uint32_t));
gc_collect_end();
}
void NORETURN nlr_jump_fail(void *val) {
reset_into_safe_mode(MICROPY_NLR_JUMP_FAIL);
while (true) {}
}
void NORETURN __fatal_error(const char *msg) {
reset_into_safe_mode(MICROPY_FATAL_ERROR);
while (true) {}
}
#ifndef NDEBUG
void MP_WEAK __assert_func(const char *file, int line, const char *func, const char *expr) {
mp_printf(&mp_plat_print, "Assertion '%s' failed, at file %s:%d\n", expr, file, line);
__fatal_error("Assertion failed");
}
#endif
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