1 /* 2 * Copyright (C) 2017 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "btstack_chipset_zephyr.c" 39 40 /* 41 * btstack_chipset_zephyr.c 42 * 43 * Adapter to use CSR-based chipsets with BTstack 44 * SCO over HCI doesn't work over H4 connection and BTM805 module from Microchip Bluetooth Audio Developer Kit (CSR8811) 45 */ 46 47 #include "btstack_chipset_zephyr.h" 48 49 #include <stddef.h> /* NULL */ 50 #include <stdio.h> 51 #include <string.h> /* memcpy */ 52 53 #include "btstack_control.h" 54 #include "btstack_debug.h" 55 #include "btstack_util.h" 56 #include "hci_transport.h" 57 58 // minimal Zpehyr init script to read static random address 59 static const uint8_t init_script[] = { 60 0x09, 0xfc, 0x00, 61 }; 62 static const uint16_t init_script_size = sizeof(init_script); 63 64 // 65 static uint32_t init_script_offset = 0; 66 67 static void chipset_init(const void * config){ 68 UNUSED(config); 69 init_script_offset = 0; 70 } 71 72 static btstack_chipset_result_t chipset_next_command(uint8_t * hci_cmd_buffer){ 73 74 while (true){ 75 76 if (init_script_offset >= init_script_size) { 77 return BTSTACK_CHIPSET_DONE; 78 } 79 80 // copy command header 81 memcpy(&hci_cmd_buffer[0], (uint8_t *) &init_script[init_script_offset], 3); 82 init_script_offset += 3; 83 int payload_len = hci_cmd_buffer[2]; 84 // copy command payload 85 memcpy(&hci_cmd_buffer[3], (uint8_t *) &init_script[init_script_offset], payload_len); 86 87 return BTSTACK_CHIPSET_VALID_COMMAND; 88 } 89 } 90 91 92 static const btstack_chipset_t btstack_chipset_zephyr = { 93 "Zephyr", 94 chipset_init, 95 chipset_next_command, 96 NULL, // chipset_set_baudrate_command, 97 NULL, // chipset_set_bd_addr_command not supported or implemented 98 }; 99 100 // MARK: public API 101 const btstack_chipset_t * btstack_chipset_zephyr_instance(void){ 102 return &btstack_chipset_zephyr; 103 } 104