83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
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/** @file at.h
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* @brief Internal APIs for AT command handling.
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*/
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/*
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* Copyright (c) 2015-2016 Intel Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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enum at_result {
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AT_RESULT_OK,
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AT_RESULT_ERROR
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};
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enum at_state {
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AT_STATE_START,
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AT_STATE_START_CR,
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AT_STATE_START_LF,
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AT_STATE_GET_CMD_STRING,
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AT_STATE_PROCESS_CMD,
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AT_STATE_GET_RESULT_STRING,
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AT_STATE_PROCESS_RESULT,
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AT_STATE_UNSOLICITED_CMD,
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AT_STATE_END
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};
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enum at_cmd_state {
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CMD_START,
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CMD_GET_VALUE,
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CMD_PROCESS_VALUE,
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CMD_STATE_END_LF,
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CMD_STATE_END
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};
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struct at_client;
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/* Callback at_resp_cb_t used to parse response value received for the
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* particular AT command. Eg: +CIND=<value>
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*/
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typedef int (*at_resp_cb_t)(struct at_client *at, struct net_buf *buf);
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/* Callback at_finish_cb used to monitor the success or failure of the AT
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* command received from server
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*/
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typedef int (*at_finish_cb_t)(struct at_client *at, struct net_buf *buf,
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enum at_result result);
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typedef int (*parse_val_t)(struct at_client *at);
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typedef int (*handle_parse_input_t)(struct at_client *at, struct net_buf *buf);
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typedef int (*handle_cmd_input_t)(struct at_client *at, struct net_buf *buf,
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const char *prefix, parse_val_t func);
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struct at_client {
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char *buf;
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uint8_t buf_pos;
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uint8_t buf_max_len;
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uint8_t state;
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uint8_t cmd_state;
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at_resp_cb_t resp;
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at_finish_cb_t finish;
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};
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/* Register the callback functions */
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void at_register(struct at_client *at, at_resp_cb_t resp,
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at_finish_cb_t finish);
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int at_get_number(const char *buf, uint32_t *val);
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/* This parsing will only works for non-fragmented net_buf */
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int at_parse_input(struct at_client *at, struct net_buf *buf);
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/* This command parsing will only works for non-fragmented net_buf */
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int at_parse_cmd_input(struct at_client *at, struct net_buf *buf,
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const char *prefix, parse_val_t func);
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int at_check_byte(struct net_buf *buf, char check_byte);
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