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GeezerVison is showing github.com — circuitpython/main.c at main · SinnDevelopment/circuitpython Expand file tree/ Copy pathmain.cMore file actions 1188 lines (1005 loc) · 40.3 KB / Copy pathmain.cFile metadata and controls1188 lines (1005 loc) · 40.3 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 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"supervisor/shared/safe_mode.h" #include "supervisor/shared/serial.h" #include "supervisor/shared/stack.h" #include "supervisor/shared/status_leds.h" #include "supervisor/shared/tick.h" #include "supervisor/shared/traceback.h" #include "supervisor/shared/workflow.h" #include "supervisor/workflow.h" #include "supervisor/shared/external_flash/external_flash.h" #include "shared-bindings/microcontroller/__init__.h" #include "shared-bindings/microcontroller/Processor.h" #include "shared-bindings/supervisor/__init__.h" #include "shared-bindings/supervisor/Runtime.h" #include "shared-bindings/os/__init__.h" #if CIRCUITPY_ALARM #include "shared-bindings/alarm/__init__.h" #endif #if CIRCUITPY_ATEXIT #include "shared-module/atexit/__init__.h" #endif #if CIRCUITPY_BLEIO #include "shared-bindings/_bleio/__init__.h" #include "supervisor/shared/bluetooth/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" #include "shared-bindings/displayio/__init__.h" #endif #if CIRCUITPY_EPAPERDISPLAY #include "shared-bindings/epaperdisplay/EPaperDisplay.h" #endif #if CIRCUITPY_KEYPAD #include "shared-module/keypad/__init__.h" #endif #if CIRCUITPY_MEMORYMONITOR #include "shared-module/memorymonitor/__init__.h" #endif #if CIRCUITPY_SOCKETPOOL #include "shared-bindings/socketpool/__init__.h" #endif #if CIRCUITPY_STATUS_BAR #include "supervisor/shared/status_bar.h" #endif #if CIRCUITPY_USB_DEVICE && CIRCUITPY_USB_HID #include "shared-module/usb_hid/__init__.h" #endif #if CIRCUITPY_TINYUSB #include "supervisor/usb.h" #endif #if CIRCUITPY_WIFI #include "shared-bindings/wifi/__init__.h" #endif #if CIRCUITPY_BOOT_COUNTER #include "shared-bindings/nvm/ByteArray.h" uint8_t value_out = 0; #endif #if MICROPY_ENABLE_PYSTACK && CIRCUITPY_OS_GETENV #include "shared-module/os/__init__.h" #endif static void reset_devices(void) { #if CIRCUITPY_BLEIO_HCI bleio_reset(); #endif } static uint8_t *_heap; static uint8_t *_pystack; static const char line_clear[] = "\x1b[2K\x1b[0G"; #if MICROPY_ENABLE_PYSTACK || MICROPY_ENABLE_GC static uint8_t *_allocate_memory(safe_mode_t safe_mode, const char *env_key, size_t default_size, size_t *final_size) { *final_size = default_size; #if CIRCUITPY_OS_GETENV if (safe_mode == SAFE_MODE_NONE) { (void)common_hal_os_getenv_int(env_key, (mp_int_t *)final_size); if (*final_size < 0) { *final_size = default_size; } } #endif uint8_t *ptr = port_malloc(*final_size, false); #if CIRCUITPY_OS_GETENV if (ptr == NULL) { // Fallback to the build size. ptr = port_malloc(default_size, false); } #endif if (ptr == NULL) { reset_into_safe_mode(SAFE_MODE_NO_HEAP); } return ptr; } #endif static void start_mp(safe_mode_t safe_mode) { 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.) The top of the // stack is set to our current state. Not the actual top. mp_stack_ctrl_init(); uint32_t *stack_bottom = port_stack_get_limit(); uint32_t *stack_top = port_stack_get_top(); size_t stack_length = (stack_top - stack_bottom) * sizeof(uint32_t); mp_stack_set_top(stack_top); mp_stack_set_limit(stack_length - CIRCUITPY_EXCEPTION_STACK_SIZE); #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 size_t pystack_size = 0; _pystack = _allocate_memory(safe_mode, "CIRCUITPY_PYSTACK_SIZE", CIRCUITPY_PYSTACK_SIZE, &pystack_size); mp_pystack_init(_pystack, _pystack + pystack_size); #endif #if MICROPY_ENABLE_GC size_t heap_size = 0; _heap = _allocate_memory(safe_mode, "CIRCUITPY_HEAP_START_SIZE", CIRCUITPY_HEAP_START_SIZE, &heap_size); gc_init(_heap, _heap + heap_size); #endif mp_init(); mp_obj_list_init((mp_obj_list_t *)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_)); #if MICROPY_MODULE_FROZEN mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__dot_frozen)); #endif mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_lib)); mp_obj_list_init((mp_obj_list_t *)mp_sys_argv, 0); } static void stop_mp(void) { #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_TINYUSB usb_background(); #endif // Set the qstr pool back to the const pools. The heap allocated ones will // be overwritten. qstr_reset(); gc_deinit(); port_free(_heap); _heap = NULL; #if MICROPY_ENABLE_PYSTACK port_free(_pystack); _pystack = NULL; #endif } static const char *_current_executing_filename = NULL; static pyexec_result_t _exec_result = {0, MP_OBJ_NULL, 0}; #if CIRCUITPY_STATUS_BAR void supervisor_execution_status(void) { mp_obj_exception_t *exception = MP_OBJ_TO_PTR(_exec_result.exception); if (_current_executing_filename != NULL) { serial_write(_current_executing_filename); } else if ((_exec_result.return_code & PYEXEC_EXCEPTION) != 0 && _exec_result.exception_line > 0 && exception != NULL) { mp_printf(&mp_plat_print, "%d@%s %q", _exec_result.exception_line, _exec_result.exception_filename, exception->base.type->name); } else { serial_write_compressed(MP_ERROR_TEXT("Done")); } } #endif #if CIRCUITPY_WATCHDOG pyexec_result_t *pyexec_result(void) { return &_exec_result; } #endif // 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, size_t n_filenames) { for (size_t i = 0; i < n_filenames; 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, size_t n_filenames) { _exec_result.return_code = 0; _exec_result.exception = MP_OBJ_NULL; _exec_result.exception_line = 0; _current_executing_filename = first_existing_file_in_list(filenames, n_filenames); if (_current_executing_filename == NULL) { return false; } // This function is used for `boot.py` and is thus logged to `boot_out.txt`. // We do not want the line clear to be logged. // The function `serial_write` is the only function that isn't logged into the file. serial_write(line_clear); mp_hal_stdout_tx_str(_current_executing_filename); serial_write_compressed(MP_ERROR_TEXT(" output:\n")); #if CIRCUITPY_STATUS_BAR supervisor_status_bar_update(); #endif pyexec_file(_current_executing_filename, &_exec_result); #if CIRCUITPY_ATEXIT shared_module_atexit_execute(&_exec_result); #endif _current_executing_filename = NULL; #if CIRCUITPY_STATUS_BAR supervisor_status_bar_update(); #endif return true; } static void count_strn(void *data, const char *str, size_t len) { *(size_t *)data += len; } static void cleanup_after_vm(mp_obj_t exception) { // Get the traceback of any exception from this run off the heap. // MP_OBJ_SENTINEL means "this run does not contribute to traceback storage, don't touch it" // MP_OBJ_NULL (=0) means "this run completed successfully, clear any stored traceback" if (exception != MP_OBJ_SENTINEL) { if (prev_traceback_string != NULL) { port_free(prev_traceback_string); prev_traceback_string = NULL; } // ReloadException is exempt from traceback printing in pyexec_file(), so treat it as "no // traceback" here too. if (exception && exception != MP_OBJ_FROM_PTR(&MP_STATE_VM(mp_reload_exception))) { size_t traceback_len = 0; mp_print_t print_count = {&traceback_len, count_strn}; mp_obj_print_exception(&print_count, exception); prev_traceback_string = (char *)port_malloc(traceback_len + 1, false); // Empirically, this never fails in practice - even when the heap is totally filled up // with single-block-sized objects referenced by a root pointer, exiting the VM frees // up several hundred bytes, sufficient for the traceback (which tends to be shortened // because there wasn't memory for the full one). There may be convoluted ways of // making it fail, but at this point I believe they are not worth spending code on. if (prev_traceback_string != NULL) { vstr_t vstr; vstr_init_fixed_buf(&vstr, traceback_len, prev_traceback_string); mp_print_t print = {&vstr, (mp_print_strn_t)vstr_add_strn}; mp_obj_print_exception(&print, exception); prev_traceback_string[traceback_len] = '\0'; } } } // Reset port-independent devices, like CIRCUITPY_BLEIO_HCI. reset_devices(); #if CIRCUITPY_ATEXIT atexit_reset(); #endif // Turn off the display and flush the filesystem before the heap disappears. #if CIRCUITPY_DISPLAYIO reset_displays(); #endif #if CIRCUITPY_MEMORYMONITOR memorymonitor_reset(); #endif // Disable user related BLE state that uses the micropython heap. #if CIRCUITPY_BLEIO bleio_user_reset(); #endif #if CIRCUITPY_CANIO common_hal_canio_reset(); #endif #if CIRCUITPY_KEYPAD keypad_reset(); #endif // Close user-initiated sockets. #if CIRCUITPY_SOCKETPOOL socketpool_user_reset(); #endif // Turn off user initiated WiFi connections. #if CIRCUITPY_WIFI wifi_user_reset(); #endif // reset_board_buses() first because it may release pins from the never_reset state, so that // reset_port() can reset them. #if CIRCUITPY_BOARD reset_board_buses(); #endif reset_port(); reset_board(); // Free the heap last because other modules may reference heap memory and need to shut down. filesystem_flush(); stop_mp(); // Let the workflows know we've reset in case they want to restart. supervisor_workflow_reset(); } static void print_code_py_status_message(safe_mode_t safe_mode) { mp_hal_stdout_tx_str(line_clear); if (autoreload_is_enabled()) { serial_write_compressed( MP_ERROR_TEXT("Auto-reload is on. Simply save files over USB to run them or enter REPL to disable.\n")); } else { serial_write_compressed(MP_ERROR_TEXT("Auto-reload is off.\n")); } if (safe_mode != SAFE_MODE_NONE) { serial_write_compressed(MP_ERROR_TEXT("Running in safe mode! Not running saved code.\n")); } } static bool __attribute__((noinline)) run_code_py(safe_mode_t safe_mode, bool *simulate_reset) { 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 bool skip_repl = false; bool skip_wait = false; bool found_main = false; uint8_t next_code_options = 0; // Collects stickiness bits that apply in the current situation. uint8_t next_code_stickiness_situation = SUPERVISOR_NEXT_CODE_OPT_NEWLY_SET; // Do the filesystem flush check before reload in case another write comes // in while we're doing the flush. if (safe_mode == SAFE_MODE_NONE) { filesystem_flush(); } if (safe_mode == SAFE_MODE_NONE && !autoreload_pending()) { static const char *const supported_filenames[] = { "code.txt", "code.py", "main.py", "main.txt" }; #if CIRCUITPY_FULL_BUILD static const char *const double_extension_filenames[] = { "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 start_mp(safe_mode); #if CIRCUITPY_USB_DEVICE usb_setup_with_vm(); #endif // Check if a different run file has been allocated if (next_code_configuration != NULL) { next_code_configuration->options &= ~SUPERVISOR_NEXT_CODE_OPT_NEWLY_SET; next_code_options = next_code_configuration->options; if (next_code_configuration->filename[0] != '\0') { // This is where the user's python code is actually executed: const char *const filenames[] = { next_code_configuration->filename }; found_main = maybe_run_list(filenames, MP_ARRAY_SIZE(filenames)); if (!found_main) { serial_write(next_code_configuration->filename); serial_write_compressed(MP_ERROR_TEXT(" not found.\n")); } } } // Otherwise, default to the standard list of filenames if (!found_main) { // This is where the user's python code is actually executed: found_main = maybe_run_list(supported_filenames, MP_ARRAY_SIZE(supported_filenames)); // If that didn't work, double check the extensions #if CIRCUITPY_FULL_BUILD if (!found_main) { found_main = maybe_run_list(double_extension_filenames, MP_ARRAY_SIZE(double_extension_filenames)); if (found_main) { serial_write_compressed(MP_ERROR_TEXT("WARNING: Your code filename has two extensions\n")); } } #else (void)found_main; #endif } // Print done before resetting everything so that we get the message over // BLE before it is reset and we have a delay before reconnect. if ((_exec_result.return_code & PYEXEC_RELOAD) && supervisor_get_run_reason() == RUN_REASON_AUTO_RELOAD) { serial_write_compressed(MP_ERROR_TEXT("\nCode stopped by auto-reload. Reloading soon.\n")); } else { serial_write_compressed(MP_ERROR_TEXT("\nCode done running.\n")); } // Finished executing python code. Cleanup includes filesystem flush and a board reset. cleanup_after_vm(_exec_result.exception); _exec_result.exception = NULL; // If a new next code file was set, that is a reason to keep it (obviously). Stuff this into // the options because it can be treated like any other reason-for-stickiness bit. The // source is different though: it comes from the options that will apply to the next run, // while the rest of next_code_options is what applied to this run. if (next_code_configuration != NULL && next_code_configuration->options & SUPERVISOR_NEXT_CODE_OPT_NEWLY_SET) { next_code_configuration->options |= SUPERVISOR_NEXT_CODE_OPT_NEWLY_SET; } if (_exec_result.return_code & PYEXEC_RELOAD) { next_code_stickiness_situation |= SUPERVISOR_NEXT_CODE_OPT_STICKY_ON_RELOAD; // Reload immediately unless the reload is due to autoreload. In that // case, we wait below to see if any other writes occur. if (supervisor_get_run_reason() != RUN_REASON_AUTO_RELOAD) { skip_repl = true; skip_wait = true; } } else if (_exec_result.return_code == 0) { next_code_stickiness_situation |= SUPERVISOR_NEXT_CODE_OPT_STICKY_ON_SUCCESS; if (next_code_options & SUPERVISOR_NEXT_CODE_OPT_RELOAD_ON_SUCCESS) { skip_repl = true; skip_wait = true; } } else { next_code_stickiness_situation |= SUPERVISOR_NEXT_CODE_OPT_STICKY_ON_ERROR; // Deep sleep cannot be skipped // TODO: settings in deep sleep should persist, using a new sleep memory API if (next_code_options & SUPERVISOR_NEXT_CODE_OPT_RELOAD_ON_ERROR && !(_exec_result.return_code & PYEXEC_DEEP_SLEEP)) { skip_repl = true; skip_wait = true; } } if (_exec_result.return_code & PYEXEC_FORCED_EXIT) { skip_repl = false; skip_wait = true; } } // Program has finished running. bool printed_press_any_key = false; #if CIRCUITPY_EPAPERDISPLAY 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 (_exec_result.return_code & PYEXEC_DEEP_SLEEP) { color = BLACK; blink_count = 0; } else #endif if (_exec_result.return_code != PYEXEC_EXCEPTION) { if (safe_mode == SAFE_MODE_NONE) { 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 // This loop is waits after code completes. It waits for fake sleeps to // finish, user input or autoreloads. #if CIRCUITPY_ALARM bool fake_sleeping = false; #endif while (!skip_wait) { RUN_BACKGROUND_TASKS; // If a reload was requested by the supervisor or autoreload, return. if (autoreload_ready()) { next_code_stickiness_situation |= SUPERVISOR_NEXT_CODE_OPT_STICKY_ON_RELOAD; // Should the STICKY_ON_SUCCESS and STICKY_ON_ERROR bits be cleared in // next_code_stickiness_situation? I can see arguments either way, but I'm deciding // "no" for now, mainly because it's a bit less code. At this point, we have both a // success or error and a reload, so let's have both of the respective options take // effect (in OR combination). skip_repl = true; // We're kicking off the autoreload process so reset now. If any // other reloads trigger after this, then we'll want another wait // period. autoreload_reset(); break; } // If interrupted by keyboard, return if (serial_connected() && serial_bytes_available() && !autoreload_pending()) { // 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(MP_ERROR_TEXT("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() && !autoreload_pending()) { 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(MP_ERROR_TEXT("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 (_exec_result.return_code & PYEXEC_DEEP_SLEEP) { const bool awoke_from_true_deep_sleep = common_hal_mcu_processor_get_reset_reason() == RESET_REASON_DEEP_SLEEP_ALARM; 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(); } // The first time we go into a deep sleep, make sure we have been awake long enough // for USB to connect (enumeration delay), or for the BLE workflow to start. // We wait CIRCUITPY_WORKFLOW_CONNECTION_SLEEP_DELAY seconds after a restart. // But if we woke up from a real deep sleep, don't wait for connection. The user will need to // do a hard reset to get out of the real deep sleep. else if (awoke_from_true_deep_sleep || port_get_raw_ticks(NULL) > CIRCUITPY_WORKFLOW_CONNECTION_SLEEP_DELAY * 1024) { // OK to start sleeping, real or fake. #if CIRCUITPY_DISPLAYIO common_hal_displayio_release_displays(); #endif status_led_deinit(); deinit_rxtx_leds(); board_deinit(); // Continue with true deep sleep even if workflow is available. if (awoke_from_true_deep_sleep || !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( MP_ERROR_TEXT("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. // Skip if we're about to autoreload. Otherwise we may delay when user code can update // the display. #if CIRCUITPY_EPAPERDISPLAY if (time_to_epaper_refresh > 0 && !autoreload_pending()) { 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_EPAPERDISPLAY 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. if (time_to_next_change > 0) { port_interrupt_after_ticks(time_to_next_change); port_idle_until_interrupt(); } #else // No status LED can we sleep until we are interrupted by some // interaction. port_idle_until_interrupt(); #endif } } // Done waiting, start the board back up. // We delay resetting BLE until after the wait in case we're transferring // more files over. #if CIRCUITPY_BLEIO bleio_reset(); #endif // free code allocation if unused if (next_code_configuration != NULL && (next_code_configuration->options & next_code_stickiness_situation) == 0) { port_free(next_code_configuration); next_code_configuration = NULL; } #if CIRCUITPY_STATUS_LED if (led_active) { new_status_color(BLACK); status_led_deinit(); } #endif #if CIRCUITPY_ALARM if (fake_sleeping) { board_init(); // Pretend that the next run is the first run, as if we were reset. *simulate_reset = true; } #endif return skip_repl; } vstr_t *boot_output; #if CIRCUITPY_SAFEMODE_PY static void __attribute__ ((noinline)) run_safemode_py(safe_mode_t safe_mode) { // Don't run if we aren't in safe mode or we won't be able to find safemode.py. // Also don't run if it's a user-initiated safemode (pressing button(s) during boot), // since that's deliberate. if (safe_mode == SAFE_MODE_NONE || safe_mode == SAFE_MODE_USER || !filesystem_present()) { return; } start_mp(safe_mode); static const char *const safemode_py_filenames[] = {"safemode.py", "safemode.txt"}; maybe_run_list(safemode_py_filenames, MP_ARRAY_SIZE(safemode_py_filenames)); // If safemode.py itself caused an error, change the safe_mode state to indicate that. if (_exec_result.exception != MP_OBJ_NULL && _exec_result.exception != MP_OBJ_SENTINEL) { set_safe_mode(SAFE_MODE_SAFEMODE_PY_ERROR); } cleanup_after_vm(_exec_result.exception); _exec_result.exception = NULL; } #endif static void __attribute__ ((noinline)) run_boot_py(safe_mode_t safe_mode) { if (safe_mode == SAFE_MODE_NO_HEAP) { return; } // 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 == SAFE_MODE_NONE && MP_STATE_VM(vfs_mount_table) != NULL; static const char *const boot_py_filenames[] = {"boot.py", "boot.txt"}; // Do USB setup even if boot.py is not run. start_mp(safe_mode); #if CIRCUITPY_USB_DEVICE // Set up default USB values after boot.py VM starts but before running boot.py. usb_set_defaults(); #endif if (ok_to_run) { #ifdef CIRCUITPY_BOOT_OUTPUT_FILE #if CIRCUITPY_STATUS_BAR // Turn off status bar updates when writing out to boot_out.txt. supervisor_status_bar_suspend(); #endif vstr_t boot_text; vstr_init(&boot_text, 512); boot_output = &boot_text; #endif // Write version info mp_printf(&mp_plat_print, "%s\nBoard ID:%s\n", MICROPY_FULL_VERSION_INFO, CIRCUITPY_BOARD_ID); #if CIRCUITPY_MICROCONTROLLER && COMMON_HAL_MCU_PROCESSOR_UID_LENGTH > 0 uint8_t raw_id[COMMON_HAL_MCU_PROCESSOR_UID_LENGTH]; common_hal_mcu_processor_get_uid(raw_id); mp_cprintf(&mp_plat_print, MP_ERROR_TEXT("UID:")); for (size_t i = 0; i < COMMON_HAL_MCU_PROCESSOR_UID_LENGTH; i++) { mp_cprintf(&mp_plat_print, MP_ERROR_TEXT("%02X"), raw_id[i]); } mp_printf(&mp_plat_print, "\n"); port_boot_info(); #endif bool found_boot = maybe_run_list(boot_py_filenames, MP_ARRAY_SIZE(boot_py_filenames)); (void)found_boot; #ifdef CIRCUITPY_BOOT_OUTPUT_FILE // Get the base filesystem. fs_user_mount_t *vfs = (fs_user_mount_t *)MP_STATE_VM(vfs_mount_table)->obj; FATFS *fs = &vfs->fatfs; boot_output = NULL; #if CIRCUITPY_STATUS_BAR supervisor_status_bar_resume(); #endif bool write_boot_output = true; FIL boot_output_file; if (f_open(fs, &boot_output_file, CIRCUITPY_BOOT_OUTPUT_FILE, FA_READ) == FR_OK) { char *file_contents = m_new(char, boot_text.alloc); UINT chars_read; if (f_read(&boot_output_file, file_contents, 1 + boot_text.len, &chars_read) == FR_OK) { write_boot_output = (chars_read != boot_text.len) || (memcmp(boot_text.buf, file_contents, chars_read) != 0); } // no need to f_close the file } if (write_boot_output) { // Wait 1 second before opening CIRCUITPY_BOOT_OUTPUT_FILE for write, // in case power is momentary or will fail shortly due to, say a low, battery. mp_hal_delay_ms(1000); // USB isn't up, so we can write the file. // operating at the oofatfs (f_open) layer means the usb concurrent write permission // is not even checked! f_open(fs, &boot_output_file, CIRCUITPY_BOOT_OUTPUT_FILE, FA_WRITE | FA_CREATE_ALWAYS); UINT chars_written; f_write(&boot_output_file, boot_text.buf, boot_text.len, &chars_written); f_close(&boot_output_file); filesystem_flush(); } #endif } port_post_boot_py(true); cleanup_after_vm(_exec_result.exception); _exec_result.exception = NULL; port_post_boot_py(false); } static int run_repl(safe_mode_t safe_mode) { int exit_code = PYEXEC_FORCED_EXIT; filesystem_flush(); start_mp(safe_mode); #if CIRCUITPY_USB_DEVICE usb_setup_with_vm(); #endif autoreload_suspend(AUTORELOAD_SUSPEND_REPL); if (get_safe_mode() == SAFE_MODE_NONE) { const char *const filenames[] = { "repl.py" }; (void)maybe_run_list(filenames, MP_ARRAY_SIZE(filenames)); } // 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) { #if CIRCUITPY_STATUS_BAR supervisor_status_bar_suspend(); #endif exit_code = pyexec_raw_repl(); #if CIRCUITPY_STATUS_BAR supervisor_status_bar_resume(); #endif } else { _current_executing_filename = "REPL"; #if CIRCUITPY_STATUS_BAR supervisor_status_bar_update(); #endif exit_code = pyexec_friendly_repl(); _current_executing_filename = NULL; #if CIRCUITPY_STATUS_BAR supervisor_status_bar_update(); #endif } #if CIRCUITPY_ATEXIT pyexec_result_t result; shared_module_atexit_execute(&result); if (result.return_code == PYEXEC_DEEP_SLEEP) { exit_code = PYEXEC_DEEP_SLEEP; } #endif cleanup_after_vm(MP_OBJ_SENTINEL); // Also reset bleio. The above call omits it in case workflows should continue. In this case, // we're switching straight to another VM so we want to reset. #if CIRCUITPY_BLEIO bleio_reset(); #endif #if CIRCUITPY_STATUS_LED status_led_init(); new_status_color(BLACK); status_led_deinit(); #endif autoreload_resume(AUTORELOAD_SUSPEND_REPL); return exit_code; } int __attribute__((used)) main(void) { // initialise the cpu and peripherals set_safe_mode(port_init()); port_heap_init(); // Turn on RX and TX LEDs if we have them. init_rxtx_leds(); #if CIRCUITPY_BOOT_COUNTER // Increment counter before possibly entering safe mode common_hal_nvm_bytearray_get_bytes(&common_hal_mcu_nvm_obj, 0, 1, &value_out); ++value_out; common_hal_nvm_bytearray_set_bytes(&common_hal_mcu_nvm_obj, 0, &value_out, 1); #endif // Start the debug serial serial_early_init(); mp_hal_stdout_tx_str(line_clear); // Wait briefly to give a reset window where we'll enter safe mode after the reset. if (get_safe_mode() == SAFE_MODE_NONE) { set_safe_mode(wait_for_safe_mode_reset()); |
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