/* * Copyright (C) 2014 BlueKitchen GmbH * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the copyright holders nor the names of * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * 4. Any redistribution, use, or modification is done solely for * personal benefit and not for any commercial purpose or for * monetary gain. * * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * Please inquire about commercial licensing options at * contact@bluekitchen-gmbh.com * */ // ***************************************************************************** /* EXAMPLE_START(le_counter): Dual mode example * */ // ***************************************************************************** #include #include #include #include #include "btstack-config.h" #include #include #include "debug.h" #include "btstack_memory.h" #include "hci.h" #include "hci_dump.h" #include "l2cap.h" #include "le_counter.h" #include "att.h" #include "att_server.h" #include "le_device_db.h" #include "gap_le.h" #include "sm.h" #define HEARTBEAT_PERIOD_MS 1000 static int le_notification_enabled; // THE Couner static timer_source_t heartbeat; static int counter = 0; static char counter_string[30]; static int counter_string_len; const uint8_t adv_data[] = { // Flags general discoverable 0x02, 0x01, 0x02, // Name 0x0b, 0x09, 'L', 'E', ' ', 'C', 'o', 'u', 'n', 't', 'e', 'r', }; uint8_t adv_data_len = sizeof(adv_data); enum { SET_ADVERTISEMENT_PARAMS = 1 << 0, SET_ADVERTISEMENT_DATA = 1 << 1, ENABLE_ADVERTISEMENTS = 1 << 2, }; static uint16_t todos = 0; static void gap_run(){ if (!hci_can_send_command_packet_now()) return; if (todos & SET_ADVERTISEMENT_DATA){ printf("GAP_RUN: set advertisement data\n"); todos &= ~SET_ADVERTISEMENT_DATA; hci_send_cmd(&hci_le_set_advertising_data, adv_data_len, adv_data); return; } if (todos & SET_ADVERTISEMENT_PARAMS){ todos &= ~SET_ADVERTISEMENT_PARAMS; uint8_t adv_type = 0; // default bd_addr_t null_addr; memset(null_addr, 0, 6); uint16_t adv_int_min = 0x0030; uint16_t adv_int_max = 0x0030; hci_send_cmd(&hci_le_set_advertising_parameters, adv_int_min, adv_int_max, adv_type, 0, 0, &null_addr, 0x07, 0x00); return; } if (todos & ENABLE_ADVERTISEMENTS){ printf("GAP_RUN: enable advertisements\n"); todos &= ~ENABLE_ADVERTISEMENTS; hci_send_cmd(&hci_le_set_advertise_enable, 1); return; } } static void packet_handler (void * connection, uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ switch (packet_type) { case HCI_EVENT_PACKET: switch (packet[0]) { case BTSTACK_EVENT_STATE: // bt stack activated, get started - set local name if (packet[2] == HCI_STATE_WORKING) { todos = SET_ADVERTISEMENT_PARAMS | SET_ADVERTISEMENT_DATA | ENABLE_ADVERTISEMENTS; gap_run(); } break; case HCI_EVENT_DISCONNECTION_COMPLETE: todos = ENABLE_ADVERTISEMENTS; le_notification_enabled = 0; gap_run(); break; default: break; } break; default: break; } gap_run(); } // ATT Client Read Callback for Dynamic Data // - if buffer == NULL, don't copy data, just return size of value // - if buffer != NULL, copy data and return number bytes copied // @param offset defines start of attribute value static uint16_t att_read_callback(uint16_t con_handle, uint16_t att_handle, uint16_t offset, uint8_t * buffer, uint16_t buffer_size){ if (att_handle == ATT_CHARACTERISTIC_0000FF11_0000_1000_8000_00805F9B34FB_01_VALUE_HANDLE){ if (buffer){ memcpy(buffer, &counter_string[offset], counter_string_len - offset); } return counter_string_len - offset; } return 0; } // write requests static int att_write_callback(uint16_t con_handle, uint16_t att_handle, uint16_t transaction_mode, uint16_t offset, uint8_t *buffer, uint16_t buffer_size){ // printf("WRITE Callback, handle %04x, mode %u, offset %u, data: ", handle, transaction_mode, offset); // printf_hexdump(buffer, buffer_size); if (att_handle != ATT_CHARACTERISTIC_0000FF11_0000_1000_8000_00805F9B34FB_01_CLIENT_CONFIGURATION_HANDLE) return 0; le_notification_enabled = READ_BT_16(buffer, 0) == GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_NOTIFICATION; return 0; } static void heartbeat_handler(struct timer *ts){ counter++; counter_string_len = sprintf(counter_string, "BTstack counter %04u\n", counter); puts(counter_string); if (le_notification_enabled) { att_server_notify(ATT_CHARACTERISTIC_0000FF11_0000_1000_8000_00805F9B34FB_01_VALUE_HANDLE, (uint8_t*) counter_string, counter_string_len); } run_loop_set_timer(ts, HEARTBEAT_PERIOD_MS); run_loop_add_timer(ts); } // main == setup int btstack_main(void); int btstack_main(void) { l2cap_init(); l2cap_register_packet_handler(packet_handler); // setup le device db le_device_db_init(); // setup SM: Display only sm_init(); // setup ATT server att_server_init(profile_data, att_read_callback, att_write_callback); att_dump_attributes(); // set one-shot timer heartbeat.process = &heartbeat_handler; run_loop_set_timer(&heartbeat, HEARTBEAT_PERIOD_MS); run_loop_add_timer(&heartbeat); // turn on! hci_power_control(HCI_POWER_ON); return 0; } /* EXAMPLE_END */