257 lines
8.1 KiB
C
257 lines
8.1 KiB
C
/*
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* Copyright (c) 2006-2018, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2018-03-30 chenyong first version
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* 2018-08-17 chenyong multiple client support
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*/
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#ifndef __AT_H__
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#define __AT_H__
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#include <rtthread.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define AT_SW_VERSION "1.2.0"
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#define AT_CMD_NAME_LEN 16
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#define AT_END_MARK_LEN 4
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#ifndef AT_CMD_MAX_LEN
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#define AT_CMD_MAX_LEN 128
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#endif
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/* the server AT commands new line sign */
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#if defined(AT_CMD_END_MARK_CRLF)
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#define AT_CMD_END_MARK "\r\n"
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#elif defined(AT_CMD_END_MARK_CR)
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#define AT_CMD_END_MARK "\r"
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#elif defined(AT_CMD_END_MARK_LF)
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#define AT_CMD_END_MARK "\n"
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#endif
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#ifndef AT_SERVER_RECV_BUFF_LEN
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#define AT_SERVER_RECV_BUFF_LEN 256
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#endif
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#ifndef AT_SERVER_DEVICE
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#define AT_SERVER_DEVICE "uart2"
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#endif
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/* the maximum number of supported AT clients */
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#ifndef AT_CLIENT_NUM_MAX
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#define AT_CLIENT_NUM_MAX 1
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#endif
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#define AT_CMD_EXPORT(_name_, _args_expr_, _test_, _query_, _setup_, _exec_) \
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RT_USED static const struct at_cmd __at_cmd_##_test_##_query_##_setup_##_exec_ SECTION("RtAtCmdTab") = \
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{ \
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_name_, \
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_args_expr_, \
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_test_, \
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_query_, \
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_setup_, \
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_exec_, \
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};
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enum at_status
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{
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AT_STATUS_UNINITIALIZED = 0,
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AT_STATUS_INITIALIZED,
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AT_STATUS_BUSY,
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};
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typedef enum at_status at_status_t;
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#ifdef AT_USING_SERVER
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enum at_result
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{
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AT_RESULT_OK = 0, /* AT result is no error */
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AT_RESULT_FAILE = -1, /* AT result have a generic error */
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AT_RESULT_NULL = -2, /* AT result not need return */
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AT_RESULT_CMD_ERR = -3, /* AT command format error or No way to execute */
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AT_RESULT_CHECK_FAILE = -4, /* AT command expression format is error */
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AT_RESULT_PARSE_FAILE = -5, /* AT command arguments parse is error */
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};
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typedef enum at_result at_result_t;
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struct at_cmd
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{
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char name[AT_CMD_NAME_LEN];
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char *args_expr;
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at_result_t (*test)(void);
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at_result_t (*query)(void);
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at_result_t (*setup)(const char *args);
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at_result_t (*exec)(void);
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};
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typedef struct at_cmd *at_cmd_t;
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struct at_server
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{
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rt_device_t device;
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at_status_t status;
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char (*get_char)(void);
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rt_bool_t echo_mode;
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char recv_buffer[AT_SERVER_RECV_BUFF_LEN];
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rt_size_t cur_recv_len;
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rt_sem_t rx_notice;
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char end_mark[AT_END_MARK_LEN];
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rt_thread_t parser;
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void (*parser_entry)(struct at_server *server);
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};
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typedef struct at_server *at_server_t;
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#endif /* AT_USING_SERVER */
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#ifdef AT_USING_CLIENT
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enum at_resp_status
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{
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AT_RESP_OK = 0, /* AT response end is OK */
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AT_RESP_ERROR = -1, /* AT response end is ERROR */
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AT_RESP_TIMEOUT = -2, /* AT response is timeout */
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AT_RESP_BUFF_FULL= -3, /* AT response buffer is full */
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};
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typedef enum at_resp_status at_resp_status_t;
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struct at_response
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{
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/* response buffer */
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char *buf;
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/* the maximum response buffer size */
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rt_size_t buf_size;
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/* the number of setting response lines
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* == 0: the response data will auto return when received 'OK' or 'ERROR'
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* != 0: the response data will return when received setting lines number data */
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rt_size_t line_num;
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/* the count of received response lines */
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rt_size_t line_counts;
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/* the maximum response time */
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rt_int32_t timeout;
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};
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typedef struct at_response *at_response_t;
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/* URC(Unsolicited Result Code) object, such as: 'RING', 'READY' request by AT server */
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struct at_urc
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{
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const char *cmd_prefix;
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const char *cmd_suffix;
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void (*func)(const char *data, rt_size_t size);
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};
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typedef struct at_urc *at_urc_t;
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struct at_client
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{
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rt_device_t device;
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at_status_t status;
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char end_sign;
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char *recv_buffer;
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rt_size_t recv_bufsz;
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rt_size_t cur_recv_len;
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rt_sem_t rx_notice;
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rt_mutex_t lock;
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at_response_t resp;
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rt_sem_t resp_notice;
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at_resp_status_t resp_status;
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const struct at_urc *urc_table;
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rt_size_t urc_table_size;
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rt_thread_t parser;
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};
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typedef struct at_client *at_client_t;
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#endif /* AT_USING_CLIENT */
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#ifdef AT_USING_SERVER
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/* AT server initialize and start */
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int at_server_init(void);
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/* AT server send command execute result to AT device */
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void at_server_printf(const char *format, ...);
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void at_server_printfln(const char *format, ...);
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void at_server_print_result(at_result_t result);
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/* AT server request arguments parse */
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int at_req_parse_args(const char *req_args, const char *req_expr, ...);
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#endif /* AT_USING_SERVER */
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#ifdef AT_USING_CLIENT
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/* AT client initialize and start*/
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int at_client_init(const char *dev_name, rt_size_t recv_bufsz);
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/* ========================== multiple AT client function ============================ */
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/* get AT client object */
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at_client_t at_client_get(const char *dev_name);
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at_client_t at_client_get_first(void);
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/* AT client wait for connection to external devices. */
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int at_client_obj_wait_connect(at_client_t client, rt_uint32_t timeout);
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/* AT client send or receive data */
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rt_size_t at_client_obj_send(at_client_t client, const char *buf, rt_size_t size);
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rt_size_t at_client_obj_recv(at_client_t client, char *buf, rt_size_t size, rt_int32_t timeout);
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/* set AT client a line end sign */
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void at_obj_set_end_sign(at_client_t client, char ch);
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/* Set URC(Unsolicited Result Code) table */
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void at_obj_set_urc_table(at_client_t client, const struct at_urc * table, rt_size_t size);
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/* AT client send commands to AT server and waiter response */
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int at_obj_exec_cmd(at_client_t client, at_response_t resp, const char *cmd_expr, ...);
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/* AT response object create and delete */
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at_response_t at_create_resp(rt_size_t buf_size, rt_size_t line_num, rt_int32_t timeout);
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void at_delete_resp(at_response_t resp);
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at_response_t at_resp_set_info(at_response_t resp, rt_size_t buf_size, rt_size_t line_num, rt_int32_t timeout);
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/* AT response line buffer get and parse response buffer arguments */
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const char *at_resp_get_line(at_response_t resp, rt_size_t resp_line);
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const char *at_resp_get_line_by_kw(at_response_t resp, const char *keyword);
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int at_resp_parse_line_args(at_response_t resp, rt_size_t resp_line, const char *resp_expr, ...);
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int at_resp_parse_line_args_by_kw(at_response_t resp, const char *keyword, const char *resp_expr, ...);
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/* ========================== single AT client function ============================ */
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/**
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* NOTE: These functions can be used directly when there is only one AT client.
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* If there are multiple AT Client in the program, these functions can operate on the first initialized AT client.
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*/
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#define at_exec_cmd(resp, ...) at_obj_exec_cmd(at_client_get_first(), resp, __VA_ARGS__)
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#define at_client_wait_connect(timeout) at_client_obj_wait_connect(at_client_get_first(), timeout)
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#define at_client_send(buf, size) at_client_obj_send(at_client_get_first(), buf, size)
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#define at_client_recv(buf, size, timeout) at_client_obj_recv(at_client_get_first(), buf, size, timeout)
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#define at_set_end_sign(ch) at_obj_set_end_sign(at_client_get_first(), ch)
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#define at_set_urc_table(urc_table, table_sz) at_obj_set_urc_table(at_client_get_first(), urc_table, table_sz)
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#endif /* AT_USING_CLIENT */
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/* ========================== User port function ============================ */
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#ifdef AT_USING_SERVER
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/* AT server device reset */
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void at_port_reset(void);
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/* AT server device factory reset */
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void at_port_factory_reset(void);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* __AT_H__ */
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