1 /* 2 * Copyright (C) 2014 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_em9301.c" 39 40 /* 41 * btstack_chipset_em9301.c 42 * 43 * Adapter to use em9301-based chipsets with BTstack 44 * 45 * Allows to set public BD ADDR 46 */ 47 48 #include "btstack_config.h" 49 #include "btstack_chipset_em9301.h" 50 #include "btstack_debug.h" 51 52 #include <stddef.h> /* NULL */ 53 #include <string.h> /* memcpy */ 54 #include "hci.h" 55 56 // should go to some common place 57 #define OPCODE(ogf, ocf) (ocf | ogf << 10) 58 59 static const uint32_t baudrates[] = { 60 0, 61 0, 62 0, 63 9600, 64 14400, 65 19200, 66 28800, 67 38400, 68 57600, 69 76800, 70 115200, 71 230400, 72 460800, 73 921600, 74 1843200, 75 }; 76 77 static void chipset_set_bd_addr_command(bd_addr_t addr, uint8_t *hci_cmd_buffer){ 78 little_endian_store_16(hci_cmd_buffer, 0, OPCODE(OGF_VENDOR, 0x02)); 79 hci_cmd_buffer[2] = 0x06; 80 reverse_bd_addr(addr, &hci_cmd_buffer[3]); 81 } 82 83 static void chipset_set_baudrate_command(uint32_t baudrate, uint8_t *hci_cmd_buffer){ 84 // lookup baudrates 85 int i; 86 int found = 0; 87 for (i=0;i < sizeof(baudrates)/sizeof(uint32_t);i++){ 88 if (baudrates[i] == baudrate){ 89 found = i; 90 break; 91 } 92 } 93 if (!found){ 94 log_error("Baudrate %u not found in table", baudrate); 95 return; 96 } 97 little_endian_store_16(hci_cmd_buffer, 0, OPCODE(OGF_VENDOR, 0x07)); 98 hci_cmd_buffer[2] = 0x01; 99 hci_cmd_buffer[3] = i; 100 } 101 102 static const btstack_chipset_t btstack_chipset_em9301 = { 103 "EM9301", 104 NULL, // chipset_init not used 105 NULL, // chipset_next_command not used 106 chipset_set_baudrate_command, 107 chipset_set_bd_addr_command, 108 }; 109 110 // MARK: public API 111 const btstack_chipset_t * btstack_chipset_em9301_instance(void){ 112 return &btstack_chipset_em9301; 113 } 114