146 lines
5.5 KiB
C
146 lines
5.5 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2019 Dan Halbert for Adafruit Industries
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* Copyright (c) 2018 Artur Pacholec
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <string.h>
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#include <stdio.h>
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#include "ble.h"
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#include "ble_drv.h"
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#include "ble_hci.h"
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#include "nrf_soc.h"
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#include "py/objstr.h"
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#include "py/runtime.h"
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#include "shared-bindings/bleio/__init__.h"
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#include "shared-bindings/bleio/Adapter.h"
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#include "shared-bindings/bleio/Central.h"
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STATIC void central_on_ble_evt(ble_evt_t *ble_evt, void *central_in) {
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bleio_central_obj_t *central = (bleio_central_obj_t*)central_in;
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switch (ble_evt->header.evt_id) {
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case BLE_GAP_EVT_CONNECTED:
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central->conn_handle = ble_evt->evt.gap_evt.conn_handle;
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central->waiting_to_connect = false;
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break;
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case BLE_GAP_EVT_TIMEOUT:
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// Handle will be invalid.
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central->waiting_to_connect = false;
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break;
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case BLE_GAP_EVT_DISCONNECTED:
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central->conn_handle = BLE_CONN_HANDLE_INVALID;
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break;
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case BLE_GAP_EVT_SEC_PARAMS_REQUEST:
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sd_ble_gap_sec_params_reply(central->conn_handle, BLE_GAP_SEC_STATUS_PAIRING_NOT_SUPP, NULL, NULL);
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break;
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case BLE_GAP_EVT_CONN_PARAM_UPDATE_REQUEST: {
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ble_gap_evt_conn_param_update_request_t *request =
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&ble_evt->evt.gap_evt.params.conn_param_update_request;
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sd_ble_gap_conn_param_update(central->conn_handle, &request->conn_params);
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break;
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}
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default:
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// For debugging.
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// mp_printf(&mp_plat_print, "Unhandled central event: 0x%04x\n", ble_evt->header.evt_id);
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break;
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}
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}
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void common_hal_bleio_central_construct(bleio_central_obj_t *self) {
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common_hal_bleio_adapter_set_enabled(true);
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self->remote_services_list = mp_obj_new_list(0, NULL);
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self->conn_handle = BLE_CONN_HANDLE_INVALID;
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}
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void common_hal_bleio_central_connect(bleio_central_obj_t *self, bleio_address_obj_t *address, mp_float_t timeout) {
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common_hal_bleio_adapter_set_enabled(true);
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ble_drv_add_event_handler(central_on_ble_evt, self);
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ble_gap_addr_t addr;
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addr.addr_type = address->type;
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mp_buffer_info_t address_buf_info;
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mp_get_buffer_raise(address->bytes, &address_buf_info, MP_BUFFER_READ);
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memcpy(addr.addr, (uint8_t *) address_buf_info.buf, NUM_BLEIO_ADDRESS_BYTES);
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ble_gap_scan_params_t scan_params = {
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.interval = MSEC_TO_UNITS(100, UNIT_0_625_MS),
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.window = MSEC_TO_UNITS(100, UNIT_0_625_MS),
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.scan_phys = BLE_GAP_PHY_1MBPS,
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// timeout of 0 means no timeout
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.timeout = SEC_TO_UNITS(timeout, UNIT_10_MS),
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};
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ble_gap_conn_params_t conn_params = {
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.conn_sup_timeout = MSEC_TO_UNITS(4000, UNIT_10_MS),
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.min_conn_interval = MSEC_TO_UNITS(15, UNIT_1_25_MS),
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.max_conn_interval = MSEC_TO_UNITS(300, UNIT_1_25_MS),
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.slave_latency = 0, // number of conn events
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};
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self->waiting_to_connect = true;
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uint32_t err_code = sd_ble_gap_connect(&addr, &scan_params, &conn_params, BLE_CONN_CFG_TAG_CUSTOM);
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if (err_code != NRF_SUCCESS) {
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mp_raise_OSError_msg_varg(translate("Failed to start connecting, error 0x%04x"), err_code);
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}
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while (self->waiting_to_connect) {
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RUN_BACKGROUND_TASKS;
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}
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if (self->conn_handle == BLE_CONN_HANDLE_INVALID) {
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mp_raise_OSError_msg(translate("Failed to connect: timeout"));
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}
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}
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void common_hal_bleio_central_disconnect(bleio_central_obj_t *self) {
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sd_ble_gap_disconnect(self->conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
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}
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bool common_hal_bleio_central_get_connected(bleio_central_obj_t *self) {
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return self->conn_handle != BLE_CONN_HANDLE_INVALID;
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}
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mp_obj_tuple_t *common_hal_bleio_central_discover_remote_services(bleio_central_obj_t *self, mp_obj_t service_uuids_whitelist) {
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common_hal_bleio_device_discover_remote_services(MP_OBJ_FROM_PTR(self), service_uuids_whitelist);
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// Convert to a tuple and then clear the list so the callee will take ownership.
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mp_obj_tuple_t *services_tuple = mp_obj_new_tuple(self->remote_services_list->len,
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self->remote_services_list->items);
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mp_obj_list_clear(self->remote_services_list);
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return services_tuple;
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}
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mp_obj_list_t *common_hal_bleio_central_get_remote_services(bleio_central_obj_t *self) {
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return self->remote_services_list;
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}
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