1 /****************************************************************************** 2 * 3 * Copyright (c) 2014 The Android Open Source Project 4 * Copyright 2003-2012 Broadcom Corporation 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at: 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 * 18 ******************************************************************************/ 19 20 /***************************************************************************** 21 * Data types 22 ****************************************************************************/ 23 24 /* ASCII character string of arguments to the AT command */ 25 #define BTA_HF_CLIENT_AT_MAX_LEN 512 26 27 typedef uint8_t tBTA_HF_CLIENT_AT_CMD; 28 29 /* Maximum combined buffer for received AT events string */ 30 #define BTA_HF_CLIENT_AT_PARSER_MAX_LEN 4096 31 32 /* This structure holds prepared AT command queued for sending */ 33 struct queued_at_cmd { 34 tBTA_HF_CLIENT_AT_CMD cmd; 35 char buf[BTA_HF_CLIENT_AT_MAX_LEN]; 36 uint16_t buf_len; 37 struct queued_at_cmd* next; 38 }; 39 typedef struct queued_at_cmd tBTA_HF_CLIENT_AT_QCMD; 40 41 /* Maximum number of indicators */ 42 #define BTA_HF_CLIENT_AT_INDICATOR_COUNT 20 43 44 /* AT command parsing control block */ 45 typedef struct { 46 char buf[BTA_HF_CLIENT_AT_PARSER_MAX_LEN + 47 1]; /* extra byte to always have \0 at the end */ 48 unsigned int offset; 49 tBTA_HF_CLIENT_AT_CMD current_cmd; 50 tBTA_HF_CLIENT_AT_QCMD* queued_cmd; 51 alarm_t* resp_timer; /* AT response timer */ 52 alarm_t* hold_timer; /* AT hold timer */ 53 54 /* CIND: lookup table to store the sequence of incoming indicators and their 55 values 56 so when their values come later, we know which value in sequence match 57 certain indicator */ 58 int indicator_lookup[BTA_HF_CLIENT_AT_INDICATOR_COUNT]; 59 60 } tBTA_HF_CLIENT_AT_CB; 61