/* * This file is part of the MicroPython project, http://micropython.org/ * * The MIT License (MIT) * * Copyright (c) 2019 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 #include "extmod/vfs.h" #include "extmod/vfs_fat.h" #include "shared-bindings/_bleio/__init__.h" #include "shared-bindings/_bleio/Adapter.h" #include "shared-bindings/_bleio/Characteristic.h" #include "shared-bindings/_bleio/Service.h" #include "shared-bindings/_bleio/UUID.h" #include "common-hal/_bleio/__init__.h" #include "supervisor/shared/autoreload.h" #include "py/mpstate.h" bleio_service_obj_t supervisor_ble_service; bleio_uuid_obj_t supervisor_ble_service_uuid; bleio_characteristic_obj_t supervisor_ble_version_characteristic; bleio_uuid_obj_t supervisor_ble_version_uuid; bleio_characteristic_obj_t supervisor_ble_filename_characteristic; bleio_uuid_obj_t supervisor_ble_filename_uuid; bleio_characteristic_obj_t supervisor_ble_length_characteristic; bleio_uuid_obj_t supervisor_ble_length_uuid; bleio_characteristic_obj_t supervisor_ble_contents_characteristic; bleio_uuid_obj_t supervisor_ble_contents_uuid; // This is the base UUID for CircuitPython services and characteristics. const uint8_t circuitpython_base_uuid[16] = {0x6e, 0x68, 0x74, 0x79, 0x50, 0x74, 0x69, 0x75, 0x63, 0x72, 0x69, 0x43, 0x00, 0x00, 0xaf, 0xad }; // This standard advertisement advertises the CircuitPython editing service and a CIRCUITPY short name. uint8_t circuitpython_advertising_data[] = { 0x02, 0x01, 0x06, 0x02, 0x0a, 0x00, 0x11, 0x07, 0x6e, 0x68, 0x74, 0x79, 0x50, 0x74, 0x69, 0x75, 0x63, 0x72, 0x69, 0x43, 0x00, 0x01, 0xaf, 0xad, 0x06, 0x08, 0x43, 0x49, 0x52, 0x43, 0x55 }; // This scan response advertises the full CIRCUITPYXXXX device name. uint8_t circuitpython_scan_response_data[15] = {0x0e, 0x09, 0x43, 0x49, 0x52, 0x43, 0x55, 0x49, 0x54, 0x50, 0x59, 0x00, 0x00, 0x00, 0x00}; mp_obj_list_t service_list; mp_obj_t service_list_items[1]; mp_obj_list_t characteristic_list; mp_obj_t characteristic_list_items[4]; void supervisor_bluetooth_start_advertising(void) { bool is_connected = common_hal_bleio_adapter_get_connected(&common_hal_bleio_adapter_obj); if (is_connected) { return; } // TODO: switch to Adafruit short UUID for the advertisement and add manufacturing data to distinguish ourselves from arduino. _common_hal_bleio_adapter_start_advertising(&common_hal_bleio_adapter_obj, true, 1.0, circuitpython_advertising_data, sizeof(circuitpython_advertising_data), circuitpython_scan_response_data, sizeof(circuitpython_scan_response_data)); } void supervisor_start_bluetooth(void) { common_hal_bleio_adapter_set_enabled(&common_hal_bleio_adapter_obj, true); supervisor_ble_service_uuid.base.type = &bleio_uuid_type; common_hal_bleio_uuid_construct(&supervisor_ble_service_uuid, 0x0100, circuitpython_base_uuid); // We know we'll only be 1 characteristic so we can statically allocate it. characteristic_list.base.type = &mp_type_list; characteristic_list.alloc = sizeof(characteristic_list_items) / sizeof(characteristic_list_items[0]); characteristic_list.len = 0; characteristic_list.items = characteristic_list_items; mp_seq_clear(characteristic_list.items, 0, characteristic_list.alloc, sizeof(*characteristic_list.items)); _common_hal_bleio_service_construct(&supervisor_ble_service, &supervisor_ble_service_uuid, false /* is secondary */, &characteristic_list); // File length supervisor_ble_version_uuid.base.type = &bleio_uuid_type; common_hal_bleio_uuid_construct(&supervisor_ble_version_uuid, 0x0203, circuitpython_base_uuid); common_hal_bleio_characteristic_construct(&supervisor_ble_version_characteristic, &supervisor_ble_service, 0, // handle (for remote only) &supervisor_ble_version_uuid, CHAR_PROP_READ, SECURITY_MODE_OPEN, SECURITY_MODE_NO_ACCESS, 4, // max length true, // fixed length NULL); // no initial value uint32_t version = 1; mp_buffer_info_t bufinfo; bufinfo.buf = &version; bufinfo.len = sizeof(version); common_hal_bleio_characteristic_set_value(&supervisor_ble_version_characteristic, &bufinfo); // Active filename. supervisor_ble_filename_uuid.base.type = &bleio_uuid_type; common_hal_bleio_uuid_construct(&supervisor_ble_filename_uuid, 0x0200, circuitpython_base_uuid); common_hal_bleio_characteristic_construct(&supervisor_ble_filename_characteristic, &supervisor_ble_service, 0, // handle (for remote only) &supervisor_ble_filename_uuid, CHAR_PROP_READ | CHAR_PROP_WRITE, SECURITY_MODE_OPEN, SECURITY_MODE_OPEN, 500, // max length false, // fixed length NULL); // no initial value char code_py[] = "/code.py"; bufinfo.buf = code_py; bufinfo.len = sizeof(code_py); common_hal_bleio_characteristic_set_value(&supervisor_ble_filename_characteristic, &bufinfo); // File length supervisor_ble_length_uuid.base.type = &bleio_uuid_type; common_hal_bleio_uuid_construct(&supervisor_ble_length_uuid, 0x0202, circuitpython_base_uuid); common_hal_bleio_characteristic_construct(&supervisor_ble_length_characteristic, &supervisor_ble_service, 0, // handle (for remote only) &supervisor_ble_length_uuid, CHAR_PROP_NOTIFY | CHAR_PROP_READ, SECURITY_MODE_OPEN, SECURITY_MODE_NO_ACCESS, 4, // max length true, // fixed length NULL); // no initial value // File actions supervisor_ble_contents_uuid.base.type = &bleio_uuid_type; common_hal_bleio_uuid_construct(&supervisor_ble_contents_uuid, 0x0201, circuitpython_base_uuid); common_hal_bleio_characteristic_construct(&supervisor_ble_contents_characteristic, &supervisor_ble_service, 0, // handle (for remote only) &supervisor_ble_contents_uuid, CHAR_PROP_NOTIFY | CHAR_PROP_WRITE_NO_RESPONSE | CHAR_PROP_WRITE, SECURITY_MODE_OPEN, SECURITY_MODE_OPEN, 500, // max length false, // fixed length NULL); // no initial value supervisor_bluetooth_start_advertising(); vm_used_ble = false; } FIL active_file; volatile bool new_filename; volatile bool run_ble_background; bool was_connected; void update_file_length(void) { int32_t file_length = -1; mp_buffer_info_t bufinfo; bufinfo.buf = &file_length; bufinfo.len = sizeof(file_length); if (active_file.obj.fs != 0) { file_length = (int32_t) f_size(&active_file); } common_hal_bleio_characteristic_set_value(&supervisor_ble_length_characteristic, &bufinfo); } void open_current_file(void) { if (active_file.obj.fs != 0) { return; } uint16_t max_len = supervisor_ble_filename_characteristic.max_length; uint8_t path[max_len]; size_t length = common_hal_bleio_characteristic_get_value(&supervisor_ble_filename_characteristic, path, max_len - 1); path[length] = '\0'; FATFS *fs = &((fs_user_mount_t *) MP_STATE_VM(vfs_mount_table)->obj)->fatfs; f_open(fs, &active_file, (char*) path, FA_READ | FA_WRITE); update_file_length(); } void close_current_file(void) { f_close(&active_file); } uint32_t current_command[1024 / sizeof(uint32_t)]; volatile size_t current_offset; void supervisor_bluetooth_background(void) { if (!run_ble_background) { return; } bool is_connected = common_hal_bleio_adapter_get_connected(&common_hal_bleio_adapter_obj); if (!was_connected && is_connected) { open_current_file(); } else if (was_connected && !is_connected) { close_current_file(); new_filename = false; } was_connected = is_connected; run_ble_background = false; if (!is_connected) { supervisor_bluetooth_start_advertising(); return; } if (new_filename) { close_current_file(); open_current_file(); new_filename = false; // get length and set the characteristic for it } uint16_t current_length = ((uint16_t*) current_command)[0]; if (current_length > 0 && current_length == current_offset) { uint16_t command = ((uint16_t *) current_command)[1]; if (command == 1) { uint16_t max_len = 20; //supervisor_ble_contents_characteristic.max_length; uint8_t buf[max_len]; mp_buffer_info_t bufinfo; bufinfo.buf = buf; f_lseek(&active_file, 0); while (f_read(&active_file, buf, max_len, &bufinfo.len) == FR_OK) { if (bufinfo.len == 0) { break; } common_hal_bleio_characteristic_set_value(&supervisor_ble_contents_characteristic, &bufinfo); } } else if (command == 2) { // patch uint32_t offset = current_command[1]; uint32_t remove_length = current_command[2]; uint32_t insert_length = current_command[3]; uint32_t file_length = (int32_t) f_size(&active_file); //uint32_t data_shift_length = fileLength - offset - remove_length; int32_t data_shift = insert_length - remove_length; uint32_t new_length = file_length + data_shift; // TODO: Make these loops smarter to read and write on sector boundaries. if (data_shift < 0) { for (uint32_t shift_offset = offset + insert_length; shift_offset < new_length; shift_offset++) { uint8_t data; UINT actual; f_lseek(&active_file, shift_offset - data_shift); f_read(&active_file, &data, 1, &actual); f_lseek(&active_file, shift_offset); f_write(&active_file, &data, 1, &actual); } f_truncate(&active_file); } else if (data_shift > 0) { f_lseek(&active_file, file_length); // Fill end with 0xff so we don't need to erase. uint8_t data = 0xff; for (size_t i = 0; i < (size_t) data_shift; i++) { UINT actual; f_write(&active_file, &data, 1, &actual); } for (uint32_t shift_offset = new_length - 1; shift_offset >= offset + insert_length ; shift_offset--) { UINT actual; f_lseek(&active_file, shift_offset - data_shift); f_read(&active_file, &data, 1, &actual); f_lseek(&active_file, shift_offset); f_write(&active_file, &data, 1, &actual); } } f_lseek(&active_file, offset); uint8_t* data = (uint8_t *) (current_command + 4); UINT written; f_write(&active_file, data, insert_length, &written); f_sync(&active_file); // Notify the new file length. update_file_length(); // Trigger an autoreload autoreload_now(); } current_offset = 0; } } // This happens in an interrupt so we need to be quick. bool supervisor_bluetooth_hook(ble_evt_t *ble_evt) { // Catch writes to filename or contents. Length is read-only. bool done = false; switch (ble_evt->header.evt_id) { case BLE_GAP_EVT_CONNECTED: // We run our background task even if it wasn't us connected to because we may want to // advertise if the user code stopped advertising. run_ble_background = true; break; case BLE_GAP_EVT_DISCONNECTED: run_ble_background = true; break; case BLE_GATTS_EVT_WRITE: { // A client wrote to a characteristic. ble_gatts_evt_write_t *evt_write = &ble_evt->evt.gatts_evt.params.write; // Event handle must match the handle for my characteristic. if (evt_write->handle == supervisor_ble_contents_characteristic.handle) { // Handle events //write_to_ringbuf(self, evt_write->data, evt_write->len); // First packet includes a uint16_t le for length at the start. uint16_t current_length = ((uint16_t*) current_command)[0]; memcpy(((uint8_t*) current_command) + current_offset, evt_write->data, evt_write->len); current_offset += evt_write->len; current_length = ((uint16_t*) current_command)[0]; if (current_offset == current_length) { run_ble_background = true; done = true; } } else if (evt_write->handle == supervisor_ble_filename_characteristic.handle) { new_filename = true; run_ble_background = true; done = true; } else { return done; } break; } default: // For debugging. // mp_printf(&mp_plat_print, "Unhandled peripheral event: 0x%04x\n", ble_evt->header.evt_id); break; } return done; }