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103 lines
3.1 KiB
103 lines
3.1 KiB
// Copyright 2015 by Thorsten von Eicken, see LICENSE.txt
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//
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// Adapted from: github.com/tuanpmt/esp_bridge, Created on: Jan 9, 2015, Author: Minh
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#ifndef CMD_H
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#define CMD_H
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#include <esp8266.h>
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// Escape chars used by tuanpmt, dunno why he didn't use std ones...
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#define SLIP_START 0x7E
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#define SLIP_END 0x7F
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#define SLIP_REPL 0x7D
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#define SLIP_ESC(x) (x ^ 0x20)
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#if 0
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// Proper SLIP escape chars from RFC
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#define SLIP_END 0300 // indicates end of packet
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#define SLIP_ESC 0333 // indicates byte stuffing
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#define SLIP_ESC_END 0334 // ESC ESC_END means END data byte
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#define SLIP_ESC_ESC 0335 // ESC ESC_ESC means ESC data byte
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#endif
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typedef struct __attribute__((__packed__)) {
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uint16_t len; // length of data
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uint8_t data[0]; // really data[len]
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} CmdArg;
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typedef struct __attribute__((__packed__)) {
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uint16_t cmd; // command to perform, from CmdName enum
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uint32_t callback; // callback pointer to embed in response
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uint32_t _return; // return value to embed in response (?)
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uint16_t argc; // number of arguments to command
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CmdArg args[0]; // really args[argc]
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} CmdPacket;
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typedef struct {
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CmdPacket *cmd; // command packet header
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uint32_t arg_num; // number of args parsed
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uint8_t *arg_ptr; // pointer to ??
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} CmdRequest;
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typedef enum {
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CMD_NULL = 0,
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CMD_RESET, // reset esp (not honored in this implementation)
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CMD_IS_READY, // health-check
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CMD_WIFI_CONNECT, // (3) connect to AP (not honored in this implementation)
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CMD_MQTT_SETUP,
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CMD_MQTT_CONNECT,
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CMD_MQTT_DISCONNECT,
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CMD_MQTT_PUBLISH,
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CMD_MQTT_SUBSCRIBE,
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CMD_MQTT_LWT,
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CMD_MQTT_EVENTS,
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CMD_REST_SETUP, // (11)
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CMD_REST_REQUEST,
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CMD_REST_SETHEADER,
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CMD_REST_EVENTS,
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CMD_CB_ADD, // 15
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CMD_CB_EVENTS
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} CmdName;
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typedef uint32_t (*cmdfunc_t)(CmdPacket *cmd);
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typedef struct {
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CmdName sc_name;
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cmdfunc_t sc_function;
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} CmdList;
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typedef struct {
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char name[16];
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uint32_t callback;
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} cmdCallback;
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// Used by slip protocol to cause parsing of a received packet
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void CMD_parse_packet(uint8_t *buf, short len);
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// Return the info about a callback to the attached uC by name, these are callbacks that the
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// attached uC registers using the ADD_SENSOR command
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cmdCallback* CMD_GetCbByName(char* name);
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// Responses
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// Start a response, returns the partial CRC
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uint16_t CMD_ResponseStart(uint16_t cmd, uint32_t callback, uint32_t _return, uint16_t argc);
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// Adds data to a response, returns the partial CRC
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uint16_t CMD_ResponseBody(uint16_t crc_in, uint8_t* data, short len);
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// Ends a response
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void CMD_ResponseEnd(uint16_t crc);
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//void CMD_Response(uint16_t cmd, uint32_t callback, uint32_t _return, uint16_t argc, CmdArg* args[]);
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// Requests
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// Fill out a CmdRequest struct given a CmdPacket
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void CMD_Request(CmdRequest *req, CmdPacket* cmd);
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// Return the number of arguments given a request
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uint32_t CMD_GetArgc(CmdRequest *req);
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// Return the length of the next argument
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uint16_t CMD_ArgLen(CmdRequest *req);
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// Copy next arg from request into the data pointer, returns 0 on success, -1 on error
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int32_t CMD_PopArg(CmdRequest *req, void *data, uint16_t len);
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#endif
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