26b69f1363
Only Support single AG control block.
201 lines
No EOL
7.1 KiB
C
201 lines
No EOL
7.1 KiB
C
/******************************************************************************
|
|
*
|
|
* Copyright (C) 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.
|
|
*
|
|
******************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* BTA AG AT command interpreter.
|
|
*
|
|
******************************************************************************/
|
|
|
|
#include <string.h>
|
|
#include "osi/allocator.h"
|
|
#include "bta_ag_at.h"
|
|
#include "bta/utl.h"
|
|
|
|
#if (BTA_AG_INCLUDED == TRUE)
|
|
/******************************************************************************
|
|
**
|
|
** Function bta_ag_at_init
|
|
**
|
|
** Description Initialize the AT command parser control block.
|
|
**
|
|
**
|
|
** Returns void
|
|
**
|
|
******************************************************************************/
|
|
void bta_ag_at_init(tBTA_AG_AT_CB *p_cb)
|
|
{
|
|
p_cb->p_cmd_buf = NULL;
|
|
p_cb->cmd_pos = 0;
|
|
}
|
|
|
|
/******************************************************************************
|
|
**
|
|
** 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
|
|
**
|
|
******************************************************************************/
|
|
void bta_ag_at_reinit(tBTA_AG_AT_CB *p_cb)
|
|
{
|
|
if (p_cb->p_cmd_buf != NULL) {
|
|
osi_free(p_cb->p_cmd_buf);
|
|
p_cb->p_cmd_buf = NULL;
|
|
}
|
|
p_cb->cmd_pos = 0;
|
|
}
|
|
/******************************************************************************
|
|
**
|
|
** Function bta_ag_process_at
|
|
**
|
|
** 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
|
|
**
|
|
******************************************************************************/
|
|
void bta_ag_process_at(tBTA_AG_AT_CB *p_cb)
|
|
{
|
|
UINT16 idx;
|
|
UINT8 arg_type;
|
|
char *p_arg;
|
|
INT16 int_arg = 0;
|
|
/* loop through at command table looking for match */
|
|
for (idx = 0; p_cb->p_at_tbl[idx].p_cmd[0] != 0; idx++) {
|
|
if (!utl_strucmp(p_cb->p_at_tbl[idx].p_cmd, p_cb->p_cmd_buf)) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* if there is a match; verify argument type */
|
|
if (p_cb->p_at_tbl[idx].p_cmd[0] != 0) {
|
|
/* start of argument is p + strlen matching command */
|
|
p_arg = p_cb->p_cmd_buf + strlen(p_cb->p_at_tbl[idx].p_cmd);
|
|
/* if no argument */
|
|
if (p_arg[0] == 0) {
|
|
arg_type = BTA_AG_AT_NONE;
|
|
}
|
|
/* else if arg is '?' and it is last character */
|
|
else if (p_arg[0] == '?' && p_arg[1] == 0) {
|
|
arg_type = BTA_AG_AT_READ; /* we have a read */
|
|
}
|
|
/* else if arg is '=' */
|
|
else if (p_arg[0] == '=' && p_arg[1] != 0) {
|
|
if (p_arg[1] == '?' && p_arg[2] == 0) {
|
|
arg_type = BTA_AG_AT_TEST; /* we have a test */
|
|
} else {
|
|
arg_type = BTA_AG_AT_SET; /* we have a set */
|
|
p_arg++; /* skip past '=' */
|
|
}
|
|
}
|
|
/* else it is freeform argument */
|
|
else {
|
|
arg_type = BTA_AG_AT_FREE;
|
|
}
|
|
/* if arguments match command capabilities */
|
|
if ((arg_type & p_cb->p_at_tbl[idx].arg_type) != 0) {
|
|
/* if it's a set integer check max, min range */
|
|
if (arg_type == BTA_AG_AT_SET && p_cb->p_at_tbl[idx].fmt == BTA_AG_AT_INT) {
|
|
int_arg = utl_str2int(p_arg);
|
|
if (int_arg < (INT16) p_cb->p_at_tbl[idx].min ||
|
|
int_arg > (INT16) p_cb->p_at_tbl[idx].max) {
|
|
/* arg out of range; error */
|
|
(*p_cb->p_err_cback)(p_cb->p_user, FALSE, NULL);
|
|
} else {
|
|
(*p_cb->p_cmd_cback)(p_cb->p_user, idx, arg_type, p_arg, int_arg);
|
|
}
|
|
} else {
|
|
(*p_cb->p_cmd_cback)(p_cb->p_user, idx, arg_type, p_arg, int_arg);
|
|
}
|
|
} else {
|
|
/* else error */
|
|
(*p_cb->p_err_cback)(p_cb->p_user, FALSE, NULL);
|
|
}
|
|
} else {
|
|
/* else no match call error callback */
|
|
(*p_cb->p_err_cback)(p_cb->p_user, TRUE, p_cb->p_cmd_buf);
|
|
}
|
|
}
|
|
|
|
/******************************************************************************
|
|
**
|
|
** 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
|
|
**
|
|
******************************************************************************/
|
|
void bta_ag_at_parse(tBTA_AG_AT_CB *p_cb, char *p_buf, UINT16 len)
|
|
{
|
|
int i = 0;
|
|
char* p_save;
|
|
|
|
if (p_cb->p_cmd_buf == NULL) {
|
|
if ((p_cb->p_cmd_buf = (char *) osi_malloc(p_cb->cmd_max_len)) == NULL) {
|
|
APPL_TRACE_ERROR("%s: osi_malloc() failed allocation", __func__);
|
|
return;
|
|
}
|
|
p_cb->cmd_pos = 0;
|
|
}
|
|
|
|
for (i = 0; i < len;) {
|
|
while (p_cb->cmd_pos < p_cb->cmd_max_len-1 && i < len) {
|
|
/* Skip null characters between AT commands. */
|
|
if ((p_cb->cmd_pos == 0) && (p_buf[i] == 0)) {
|
|
i++;
|
|
continue;
|
|
}
|
|
p_cb->p_cmd_buf[p_cb->cmd_pos] = p_buf[i++];
|
|
if ( p_cb->p_cmd_buf[p_cb->cmd_pos] == '\r' || p_cb->p_cmd_buf[p_cb->cmd_pos] == '\n') {
|
|
p_cb->p_cmd_buf[p_cb->cmd_pos] = 0;
|
|
if ((p_cb->cmd_pos > 2) &&
|
|
(p_cb->p_cmd_buf[0] == 'A' || p_cb->p_cmd_buf[0] == 'a') &&
|
|
(p_cb->p_cmd_buf[1] == 'T' || p_cb->p_cmd_buf[1] == 't')) {
|
|
p_save = p_cb->p_cmd_buf;
|
|
p_cb->p_cmd_buf += 2;
|
|
bta_ag_process_at(p_cb);
|
|
p_cb->p_cmd_buf = p_save;
|
|
}
|
|
p_cb->cmd_pos = 0;
|
|
} else if( p_cb->p_cmd_buf[p_cb->cmd_pos] == 0x1A || p_cb->p_cmd_buf[p_cb->cmd_pos] == 0x1B) {
|
|
p_cb->p_cmd_buf[++p_cb->cmd_pos] = 0;
|
|
(*p_cb->p_err_cback)(p_cb->p_user, TRUE, p_cb->p_cmd_buf);
|
|
p_cb->cmd_pos = 0;
|
|
} else {
|
|
++p_cb->cmd_pos;
|
|
}
|
|
}
|
|
|
|
if (i < len) {
|
|
p_cb->cmd_pos = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif /* #if (BTA_AG_INCLUDED == TRUE) */ |