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/******************************************************************************
*
* Copyright 2004-2012 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/******************************************************************************
*
* Interface file for BTA AG AT command interpreter.
*
******************************************************************************/
#ifndef BTA_AG_AT_H
#define BTA_AG_AT_H
/*****************************************************************************
* Constants
****************************************************************************/
/* AT command argument capabilities */
#define BTA_AG_AT_NONE 0x01 /* no argument */
#define BTA_AG_AT_SET 0x02 /* set value */
#define BTA_AG_AT_READ 0x04 /* read value */
#define BTA_AG_AT_TEST 0x08 /* test value range */
#define BTA_AG_AT_FREE 0x10 /* freeform argument */
/* AT command argument format */
#define BTA_AG_AT_STR 0 /* string */
#define BTA_AG_AT_INT 1 /* integer */
/*****************************************************************************
* Data types
****************************************************************************/
/* AT command table element */
typedef struct {
const char* p_cmd; /* AT command string */
size_t command_id; /* passed to the callback on p_cmd match */
uint8_t arg_type; /* allowable argument type syntax */
uint8_t fmt; /* whether arg is int or string */
uint8_t min; /* minimum value for int arg */
int16_t max; /* maximum value for int arg */
} tBTA_AG_AT_CMD;
/* callback function executed when command is parsed */
struct tBTA_AG_SCB;
typedef void(tBTA_AG_AT_CMD_CBACK)(tBTA_AG_SCB* p_user, uint16_t command_id,
uint8_t arg_type, char* p_arg, char* p_end,
int16_t int_arg);
/* callback function executed to send "ERROR" result code */
typedef void(tBTA_AG_AT_ERR_CBACK)(tBTA_AG_SCB* p_user, bool unknown,
const char* p_arg);
/* AT command parsing control block */
typedef struct {
const tBTA_AG_AT_CMD* p_at_tbl; /* AT command table */
tBTA_AG_AT_CMD_CBACK* p_cmd_cback; /* command callback */
tBTA_AG_AT_ERR_CBACK* p_err_cback; /* error callback */
void* p_user; /* user-defined data */
char* p_cmd_buf; /* temp parsing buffer */
uint16_t cmd_pos; /* position in temp buffer */
uint16_t cmd_max_len; /* length of temp buffer to allocate */
uint8_t state; /* parsing state */
} tBTA_AG_AT_CB;
/*****************************************************************************
* Function prototypes
****************************************************************************/
/*****************************************************************************
*
* Function bta_ag_at_init
*
* Description Initialize the AT command parser control block.
*
*
* Returns void
*
****************************************************************************/
extern void bta_ag_at_init(tBTA_AG_AT_CB* p_cb);
/*****************************************************************************
*
* Function bta_ag_at_reinit
*
* Description Re-initialize the AT command parser control block. This
* function resets the AT command parser state and frees
* any GKI buffer.
*
*
* Returns void
*
****************************************************************************/
extern void bta_ag_at_reinit(tBTA_AG_AT_CB* p_cb);
/*****************************************************************************
*
* Function bta_ag_at_parse
*
* Description Parse AT commands. This function will take the input
* character string and parse it for AT commands according to
* the AT command table passed in the control block.
*
*
* Returns void
*
****************************************************************************/
extern void bta_ag_at_parse(tBTA_AG_AT_CB* p_cb, char* p_buf, uint16_t len);
#endif /* BTA_AG_AT_H */
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