YX ZHANG / Mbed 2 deprecated iot_example

IoT demo

Dependencies:   mbed

Fork of my_example_esp8266 by liang brain

esp8266.cpp@8:d5e340a59c71, 2018-03-19 (annotated)

Committer:
zhangyx
Date:
Mon Mar 19 03:32:21 2018 +0000
Revision:
8:d5e340a59c71
Parent:
7:49a823b5a935 
demo with pi;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
zhangyx 1:3b487c4813a2 1 /***************************************************************
zhangyx 1:3b487c4813a2 2 功能 : ESP8266物联车接口函数
zhangyx 1:3b487c4813a2 3 作者 : 马晓健
zhangyx 1:3b487c4813a2 4 邮箱 : jeasinema[at]gmail[dot]com
zhangyx 1:3b487c4813a2 5 声明 :
zhangyx 1:3b487c4813a2 6 本程序仅供学习与交流使用,如需他用,须联系作者
zhangyx 1:3b487c4813a2 7 本程序可以随意更改,但须保留本信息页
zhangyx 1:3b487c4813a2 8 All rights reserved
zhangyx 1:3b487c4813a2 9 2017.6.16
zhangyx 1:3b487c4813a2 10 ***************************************************************/
zhangyx 1:3b487c4813a2 11
brainliang 0:63af4719467f 12 #include "esp8266.h"
brainliang 0:63af4719467f 13
brainliang 0:63af4719467f 14 #include <cstdarg>
brainliang 0:63af4719467f 15 #include <cstring>
zyx 3:06080fa094a0 16 #include <stdint.h>
brainliang 0:63af4719467f 17 #include "mbed.h"
brainliang 0:63af4719467f 18
zyx 3:06080fa094a0 19 extern Serial ser2usb;
brainliang 0:63af4719467f 20
zhangyx 1:3b487c4813a2 21 static int ser_baud = 9600;
brainliang 0:63af4719467f 22
brainliang 0:63af4719467f 23 //定义了一个调试的宏,C语言语法
brainliang 0:63af4719467f 24 #define ESP_CMD(format, ...) do{\
zhangyx 6:629e300b6c3b 25 char cmdbuf[128], *p;\
brainliang 0:63af4719467f 26 ser2esp8266.printf("\r"); \
zhangyx 6:629e300b6c3b 27 sprintf(cmdbuf, format "\r", ##__VA_ARGS__);\
zhangyx 6:629e300b6c3b 28 for(p=cmdbuf;*p;p++){\
zhangyx 6:629e300b6c3b 29 ser2esp8266.putc(*p);\
zhangyx 8:d5e340a59c71 30 wait(0.02);\
zhangyx 6:629e300b6c3b 31 }\
brainliang 0:63af4719467f 32 wait(0.3);\
brainliang 0:63af4719467f 33 }while(0)
brainliang 0:63af4719467f 34
brainliang 0:63af4719467f 35
brainliang 0:63af4719467f 36
zhangyx 2:b10925c474fc 37 void Esp8266::gotResponse(char *token, char *param)
zhangyx 2:b10925c474fc 38 {
zhangyx 8:d5e340a59c71 39 if(*token<'a' || *token>'z') return;
zyx 3:06080fa094a0 40 ser2usb.printf("gotResponse %s %s\r\n", token, param);
zhangyx 2:b10925c474fc 41 if(strcmp(token, "connected") == 0)
zhangyx 2:b10925c474fc 42 mqtt_start = true;
zyx 3:06080fa094a0 43 else if(strcmp(token, "control") == 0){
zyx 3:06080fa094a0 44 if(!control_cmd){
zyx 3:06080fa094a0 45 strncpy(control_buf, param, sizeof(control_buf));
zyx 3:06080fa094a0 46 control_cmd = true;
zyx 3:06080fa094a0 47 }
zyx 3:06080fa094a0 48 }
zhangyx 2:b10925c474fc 49 else if(strcmp(token, "wifi") == 0){
zhangyx 2:b10925c474fc 50 if(*param == '5')
zhangyx 2:b10925c474fc 51 network_start = true;
zhangyx 2:b10925c474fc 52 }
zhangyx 2:b10925c474fc 53 }
brainliang 0:63af4719467f 54
zyx 3:06080fa094a0 55 bool Esp8266::get_control_cmd(char* actuator, char* value)
zyx 3:06080fa094a0 56 {
zyx 3:06080fa094a0 57 if(!control_cmd)
zyx 3:06080fa094a0 58 return false;
zyx 3:06080fa094a0 59
zyx 3:06080fa094a0 60 char* plus = strchr(control_buf, '+');
zyx 3:06080fa094a0 61 if(!plus){
zyx 3:06080fa094a0 62 control_cmd = false;
zyx 3:06080fa094a0 63 return false;
zyx 3:06080fa094a0 64 }
zyx 3:06080fa094a0 65 *plus = '\0';
zyx 3:06080fa094a0 66 strcpy(actuator, control_buf);
zyx 3:06080fa094a0 67 strcpy(value, plus+1);
zyx 3:06080fa094a0 68 control_cmd = false;
zyx 3:06080fa094a0 69 return true;
zyx 3:06080fa094a0 70 }
zyx 3:06080fa094a0 71
brainliang 0:63af4719467f 72 // 接收 esp8266 侧数据的回调函数, 每次仅接收一个8位字符
brainliang 0:63af4719467f 73 // 数据格式约定: #token+data
zhangyx 1:3b487c4813a2 74 void Esp8266::esp8266_rxCallback() {
brainliang 0:63af4719467f 75 char in = ser2esp8266.getc();
zhangyx 8:d5e340a59c71 76 // ser2usb.putc(in);
brainliang 0:63af4719467f 77 enum{STATE_WAIT, STATE_TOKEN, STATE_PARAM};
brainliang 0:63af4719467f 78 static uint8_t state = STATE_WAIT;
brainliang 0:63af4719467f 79 static int tokenLen, paramLen;
brainliang 0:63af4719467f 80 switch(state){
brainliang 0:63af4719467f 81 case STATE_WAIT:
brainliang 0:63af4719467f 82 if(in == '#'){
brainliang 0:63af4719467f 83 tokenLen = 0;
brainliang 0:63af4719467f 84 state = STATE_TOKEN;
brainliang 0:63af4719467f 85 }
brainliang 0:63af4719467f 86 break;
brainliang 0:63af4719467f 87 case STATE_TOKEN:
brainliang 0:63af4719467f 88 if(in == '+' || in == '\r' || in == '\n'){
brainliang 0:63af4719467f 89 esp_tokenBuf[tokenLen] = '\0';
brainliang 0:63af4719467f 90 if(in == '+'){
brainliang 0:63af4719467f 91 paramLen = 0;
brainliang 0:63af4719467f 92 state = STATE_PARAM;
brainliang 0:63af4719467f 93 }else{
zhangyx 2:b10925c474fc 94 gotResponse(esp_tokenBuf, NULL);
brainliang 0:63af4719467f 95 //memcpy(esp_token, esp_tokenBuf, tokenLen);
brainliang 0:63af4719467f 96 //esp_token[tokenLen] = '\0';
brainliang 0:63af4719467f 97 esp_buf_ready = true;
brainliang 0:63af4719467f 98 state = STATE_WAIT;
brainliang 0:63af4719467f 99 }
brainliang 0:63af4719467f 100 }else if(tokenLen+1 < sizeof(esp_tokenBuf)){
brainliang 0:63af4719467f 101 esp_tokenBuf[tokenLen++] = in;
brainliang 0:63af4719467f 102 }
brainliang 0:63af4719467f 103 break;
brainliang 0:63af4719467f 104 case STATE_PARAM:
brainliang 0:63af4719467f 105 if(in == '\r' || in == '\n'){
brainliang 0:63af4719467f 106 esp_paramBuf[paramLen] = '\0';
zhangyx 2:b10925c474fc 107 gotResponse(esp_tokenBuf, esp_paramBuf);
brainliang 0:63af4719467f 108 //memcpy(esp_token, esp_tokenBuf, tokenLen);
brainliang 0:63af4719467f 109 //memcpy(esp_param, esp_paramBuf, paramLen);
brainliang 0:63af4719467f 110 //esp_token[tokenLen] = '\0';
brainliang 0:63af4719467f 111 //esp_param[paramLen] = '\0';
brainliang 0:63af4719467f 112 //ser2usb.putc('?');
brainliang 0:63af4719467f 113 esp_buf_ready = true;
brainliang 0:63af4719467f 114 state = STATE_WAIT;
brainliang 0:63af4719467f 115 }else if(paramLen+1 < sizeof(esp_paramBuf)){
brainliang 0:63af4719467f 116 esp_paramBuf[paramLen++] = in;
brainliang 0:63af4719467f 117 }
brainliang 0:63af4719467f 118 break;
brainliang 0:63af4719467f 119 }
brainliang 0:63af4719467f 120 }
brainliang 0:63af4719467f 121
brainliang 0:63af4719467f 122
zhangyx 1:3b487c4813a2 123 Esp8266::Esp8266(PinName TX, PinName RX, const char *wifi_ssid, const char *wifi_passwd) //定义类的函数
zyx 3:06080fa094a0 124 : network_start(false), mqtt_start(false), control_cmd(false), esp_buf_ready(false), ser2esp8266(TX, RX)
brainliang 0:63af4719467f 125 {
brainliang 0:63af4719467f 126 // serial to esp8266 init
brainliang 0:63af4719467f 127 ser2esp8266.baud(ser_baud);
zhangyx 2:b10925c474fc 128 ser2esp8266.attach(callback(this,&Esp8266::esp8266_rxCallback), Serial::RxIrq);
zhangyx 1:3b487c4813a2 129 //if (mode == 0) { // client mode
brainliang 0:63af4719467f 130 this->reset();
zhangyx 1:3b487c4813a2 131 this->connect_wifi(wifi_ssid, wifi_passwd);
zhangyx 2:b10925c474fc 132 while(!is_connected()){
zhangyx 2:b10925c474fc 133 wait(0.5);
zhangyx 2:b10925c474fc 134 }
brainliang 0:63af4719467f 135 this->weblogin();
zhangyx 1:3b487c4813a2 136 //} else {
zhangyx 1:3b487c4813a2 137 //
zhangyx 1:3b487c4813a2 138 //}
brainliang 0:63af4719467f 139 }
brainliang 0:63af4719467f 140
brainliang 0:63af4719467f 141 bool Esp8266::reset() { //定义类的函数
brainliang 0:63af4719467f 142 ESP_CMD("node.restart()");
brainliang 0:63af4719467f 143 wait(2); // 延迟2s
brainliang 0:63af4719467f 144 return true;
brainliang 0:63af4719467f 145 }
brainliang 0:63af4719467f 146
zhangyx 1:3b487c4813a2 147 bool Esp8266::connect_wifi(const char *wifi_ssid, const char *wifi_passwd) { //定义类的函数
brainliang 0:63af4719467f 148 ESP_CMD("wifi.setmode(wifi.STATION)");
brainliang 0:63af4719467f 149 ESP_CMD("wifi.sta.config([[%s]],[[%s]])", wifi_ssid, wifi_passwd);
brainliang 0:63af4719467f 150 wait(2);
brainliang 0:63af4719467f 151 // set auto autoconnect
brainliang 0:63af4719467f 152 ESP_CMD("wifi.sta.autoconnect(1)");
zhangyx 2:b10925c474fc 153 return true;
zhangyx 2:b10925c474fc 154 }
zhangyx 2:b10925c474fc 155
zhangyx 2:b10925c474fc 156 bool Esp8266::is_connected()
zhangyx 2:b10925c474fc 157 {
brainliang 0:63af4719467f 158 ESP_CMD("print('\\035wifi+'..wifi.sta.status())");
zhangyx 2:b10925c474fc 159 wait(0.4);
zhangyx 2:b10925c474fc 160 return network_start;
brainliang 0:63af4719467f 161 }
brainliang 0:63af4719467f 162
brainliang 0:63af4719467f 163 bool Esp8266::weblogin() { //定义类的函数
brainliang 0:63af4719467f 164 // not implemented yet
brainliang 0:63af4719467f 165 return true;
brainliang 0:63af4719467f 166 }
brainliang 0:63af4719467f 167
zyx 3:06080fa094a0 168 void Esp8266::buildCapability(char *out, const char* infoList[][2])
zyx 3:06080fa094a0 169 {
zyx 3:06080fa094a0 170 out[0] = '\0';
zyx 3:06080fa094a0 171 for (int i = 0; infoList[i][0]; ++i)
zyx 3:06080fa094a0 172 {
zyx 3:06080fa094a0 173 strcat(out, infoList[i][0]);
zyx 3:06080fa094a0 174 strcat(out, ",");
zyx 3:06080fa094a0 175 strcat(out, infoList[i][1]);
zyx 3:06080fa094a0 176 strcat(out, "\\n");
zyx 3:06080fa094a0 177 }
zyx 3:06080fa094a0 178 }
zyx 3:06080fa094a0 179
zhangyx 8:d5e340a59c71 180 bool Esp8266::connect_mqtt_broker(char *ip, const char *node_name, const char* sensors[][2], const char* actuator[][2]) { //定义类的函数
zyx 3:06080fa094a0 181
zhangyx 8:d5e340a59c71 182 ESP_CMD("node_name = '%s'", node_name);
brainliang 0:63af4719467f 183 ESP_CMD("m = mqtt.Client('i_' .. node.chipid(), 120)");
zhangyx 2:b10925c474fc 184 ESP_CMD("m:connect(\"%s\",1883,0,function(conn)print (\"\\035connected\"); end)", ip);
zhangyx 2:b10925c474fc 185
zhangyx 2:b10925c474fc 186 do{
zhangyx 2:b10925c474fc 187 wait(0.5);
zhangyx 2:b10925c474fc 188 }while(!mqtt_start);
zyx 3:06080fa094a0 189
zyx 3:06080fa094a0 190 ESP_CMD("m:on(\"message\", function(conn, topic, data)");
zyx 3:06080fa094a0 191 ESP_CMD("if topic:find(\"^/control/\") then");
zyx 3:06080fa094a0 192 ESP_CMD("local tok = topic:match(\"^/control/.+/(.+)\")");
zhangyx 7:49a823b5a935 193 ESP_CMD("if tok then print(\"\\035control+\"..tok..\"+\"..data) end");
zyx 3:06080fa094a0 194 ESP_CMD("end");
zyx 3:06080fa094a0 195 ESP_CMD("end)");
zyx 3:06080fa094a0 196
zhangyx 8:d5e340a59c71 197 ESP_CMD("m:publish('/events/'..node_name..'/online','',1,0)");
zyx 3:06080fa094a0 198 wait(0.1);
zyx 3:06080fa094a0 199
zyx 3:06080fa094a0 200 char * capabilities = new char[512];
zyx 3:06080fa094a0 201
zyx 3:06080fa094a0 202 if(sensors){
zyx 3:06080fa094a0 203 buildCapability(capabilities, sensors);
zhangyx 8:d5e340a59c71 204 ESP_CMD("m:publish('/capability/'..node_name..'/values','%s',1,1)", capabilities);
zyx 3:06080fa094a0 205 wait(0.1);
zyx 3:06080fa094a0 206 }
zyx 3:06080fa094a0 207 if(actuator){
zyx 3:06080fa094a0 208 buildCapability(capabilities, actuator);
zhangyx 8:d5e340a59c71 209 ESP_CMD("m:publish('/capability/'..node_name..'/control','%s',1,1)", capabilities);
zyx 3:06080fa094a0 210 wait(0.1);
zyx 3:06080fa094a0 211 for (int i = 0; actuator[i][0]; ++i)
zyx 3:06080fa094a0 212 subscribe_control(actuator[i][0]);
zyx 3:06080fa094a0 213 }
zyx 3:06080fa094a0 214
zyx 3:06080fa094a0 215 delete[ ] capabilities;
zyx 3:06080fa094a0 216
brainliang 0:63af4719467f 217 return true;
brainliang 0:63af4719467f 218 }
brainliang 0:63af4719467f 219
zyx 3:06080fa094a0 220 bool Esp8266::publish_value(const char *topic, const char *data) { //定义类的函数
brainliang 0:63af4719467f 221 //if (mqtt_start) {
zhangyx 8:d5e340a59c71 222 ESP_CMD("m:publish('/values/'..node_name..'/%s',\"%s\",0,1)", topic, data);
zyx 3:06080fa094a0 223 wait(0.1);
brainliang 0:63af4719467f 224 //}
brainliang 0:63af4719467f 225 return true;
brainliang 0:63af4719467f 226 }
brainliang 0:63af4719467f 227
zyx 3:06080fa094a0 228 bool Esp8266::subscribe_control(const char *topic, const char *data) { //定义类的函数
brainliang 0:63af4719467f 229 //if (mqtt_start) {
zhangyx 8:d5e340a59c71 230 ESP_CMD("m:subscribe('/control/'..node_name..'/%s', 0)", topic);
brainliang 0:63af4719467f 231 wait(0.1);
brainliang 0:63af4719467f 232 //}
brainliang 0:63af4719467f 233
zyx 3:06080fa094a0 234 // ESP_CMD("m:unsubscribe(\"%s\")", topic);
brainliang 0:63af4719467f 235 return true;
brainliang 0:63af4719467f 236 }