1#!/usr/bin/env python 2# BlueKitchen GmbH (c) 2014 3 4import glob 5import re 6import sys 7import os 8 9import btstack_parser as parser 10 11program_info = ''' 12BTstack Event Getter Generator for BTstack 13Copyright 2016, BlueKitchen GmbH 14''' 15 16copyright = """/* 17 * Copyright (C) 2016 BlueKitchen GmbH 18 * 19 * Redistribution and use in source and binary forms, with or without 20 * modification, are permitted provided that the following conditions 21 * are met: 22 * 23 * 1. Redistributions of source code must retain the above copyright 24 * notice, this list of conditions and the following disclaimer. 25 * 2. Redistributions in binary form must reproduce the above copyright 26 * notice, this list of conditions and the following disclaimer in the 27 * documentation and/or other materials provided with the distribution. 28 * 3. Neither the name of the copyright holders nor the names of 29 * contributors may be used to endorse or promote products derived 30 * from this software without specific prior written permission. 31 * 4. Any redistribution, use, or modification is done solely for 32 * personal benefit and not for any commercial purpose or for 33 * monetary gain. 34 * 35 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 36 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 38 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 39 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 40 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 41 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 42 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 43 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 44 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 45 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 46 * SUCH DAMAGE. 47 * 48 * Please inquire about commercial licensing options at 49 * [email protected] 50 * 51 */ 52""" 53 54hfile_header_begin = """ 55 56/* 57 * btstack_event.h 58 * 59 * @brief BTstack event getter/setter 60 * @note Don't edit - generated by tool/btstack_event_generator.py 61 * 62 */ 63 64#ifndef __BTSTACK_EVENT_H 65#define __BTSTACK_EVENT_H 66 67#if defined __cplusplus 68extern "C" { 69#endif 70 71#include "btstack_util.h" 72#include <stdint.h> 73 74/* API_START */ 75 76""" 77 78hfile_header_end = """ 79 80/* API_END */ 81 82#if defined __cplusplus 83} 84#endif 85 86#endif // __BTSTACK_EVENT_H 87""" 88 89c_prototoype_simple_return = ''' 90/** 91 * @brief {description} 92 * @param Event packet 93 * @return {result_name} 94 * @note: btstack_type {format} 95 */ 96static inline {result_type} {fn_name}(const uint8_t * event){{ 97 {code} 98}} 99''' 100 101c_prototoype_struct_return = ''' 102/** 103 * @brief {description} 104 * @param Event packet 105 * @param Pointer to storage for {result_name} 106 * @note: btstack_type {format} 107 */ 108static inline void {fn_name}(const uint8_t * event, {result_type} {result_name}){{ 109 {code} 110}} 111''' 112 113c_prototoype_unsupported = ''' 114/** 115 * @brief {description} 116 * @param Event packet 117 * @return {result_name} 118 * @note: btstack_type {format} 119 */ 120// static inline {result_type} {fn_name}(const uint8_t * event){{ 121// not implemented yet 122// }} 123''' 124 125# global variables/defines 126gen_path = '../src/btstack_event.h' 127 128defines = dict() 129defines_used = set() 130 131param_read = { 132 '1' : 'return event[{offset}];', 133 'J' : 'return event[{offset}];', 134 'L' : 'return event[{offset}];', 135 '2' : 'return READ_BT_16(event, {offset});', 136 '3' : 'return READ_BT_24(event, {offset});', 137 '4' : 'return READ_BT_32(event, {offset});', 138 'H' : 'return READ_BT_16(event, {offset});', 139 'B' : 'bt_flip_addr({result_name}, (uint8_t*) &event[{offset}]);', 140 'R' : 'return &event[{offset}];' 141} 142 143def c_type_for_btstack_type(type): 144 param_types = { '1' : 'uint8_t', '2' : 'uint16_t', '3' : 'uint32_t', '4' : 'uint32_t', 'H' : 'hci_con_handle_t', 'B' : 'bd_addr_t', 145 'D' : 'const uint8_t *', 'E' : 'const uint8_t * ', 'N' : 'String' , 'P' : 'const uint8_t *', 'A' : 'const uint8_t *', 146 'R' : 'const uint8_t *', 'S' : 'const uint8_t *', 147 'J' : 'int', 'L' : 'int', 'V' : 'const uint8_t *', 'U' : 'BT_UUID', 148 'X' : 'GATTService', 'Y' : 'GATTCharacteristic', 'Z' : 'GATTCharacteristicDescriptor', 149 'T' : 'String'} 150 return param_types[type] 151 152def size_for_type(type): 153 param_sizes = { '1' : 1, '2' : 2, '3' : 3, '4' : 4, 'H' : 2, 'B' : 6, 'D' : 8, 'E' : 240, 'N' : 248, 'P' : 16, 154 'A' : 31, 'S' : -1, 'V': -1, 'J' : 1, 'L' : 2, 'U' : 16, 'X' : 20, 'Y' : 24, 'Z' : 18, 'T':-1} 155 return param_sizes[type] 156 157def format_function_name(event_name): 158 return event_name.lower() 159 160def template_for_type(field_type): 161 global c_prototoype_simple_return 162 global c_prototoype_struct_return 163 types_with_struct_return = "B" 164 if field_type in types_with_struct_return: 165 return c_prototoype_struct_return 166 else: 167 return c_prototoype_simple_return 168 169def all_fields_supported(format): 170 global param_read 171 for f in format: 172 if not f in param_read: 173 return False 174 return True 175 176def create_getter(event_name, field_name, field_type, offset, supported): 177 global c_prototoype_unsupported 178 global param_read 179 180 description = "Get field %s from event %s" % (field_name, event_name) 181 result_name = field_name 182 fn_name = "%s_get_%s" % (event_name, field_name) 183 result_type = c_type_for_btstack_type(field_type) 184 template = c_prototoype_unsupported 185 code = '' 186 if supported and field_type in param_read: 187 template = template_for_type(field_type) 188 code = param_read[field_type].format(offset=offset, result_name=result_name) 189 return template.format(description=description, fn_name=fn_name, result_name=result_name, result_type=result_type, code=code, format=field_type) 190 191def create_events(events): 192 global gen_path 193 global copyright 194 global hfile_header_begin 195 global hfile_header_end 196 197 with open(gen_path, 'wt') as fout: 198 fout.write(copyright) 199 fout.write(hfile_header_begin) 200 for event_type, event_name, format, args in events: 201 event_name = format_function_name(event_name) 202 offset = 2 203 supported = all_fields_supported(format) 204 for f, arg in zip(format, args): 205 field_name = arg 206 field_type = f 207 if field_type == 'V': 208 break 209 text = create_getter(event_name, field_name, field_type, offset, supported) 210 fout.write(text) 211 if field_type == 'R': 212 break 213 offset += size_for_type(field_type) 214 215 fout.write(hfile_header_end) 216 217# set root 218parser.set_btstack_root('..') 219 220print(program_info) 221 222# parse events 223(events, le_events, event_types) = parser.parse_events() 224 225# create event field accesors 226create_events(events + le_events) 227 228# done 229print('Done!') 230