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