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Kuo Yiching
Fork of iot_example by
esp8266.cpp@2:b10925c474fc, 2017-11-07 (annotated)
- Committer:
- zhangyx
- Date:
- Tue Nov 07 04:09:57 2017 +0000
- Revision:
- 2:b10925c474fc
- Parent:
- 1:3b487c4813a2
- Child:
- 3:06080fa094a0
changes for IoT node
Who changed what in which revision?
User | Revision | Line number | New 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> |
brainliang | 0:63af4719467f | 16 | #include "mbed.h" |
brainliang | 0:63af4719467f | 17 | |
brainliang | 0:63af4719467f | 18 | |
brainliang | 0:63af4719467f | 19 | //#define DEBUG |
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{\ |
brainliang | 0:63af4719467f | 25 | ser2esp8266.printf("\r"); \ |
brainliang | 0:63af4719467f | 26 | ser2esp8266.printf(format "\r", ##__VA_ARGS__);\ |
brainliang | 0:63af4719467f | 27 | wait(0.3);\ |
brainliang | 0:63af4719467f | 28 | }while(0) |
brainliang | 0:63af4719467f | 29 | |
brainliang | 0:63af4719467f | 30 | |
brainliang | 0:63af4719467f | 31 | #ifdef DEBUG |
zhangyx | 2:b10925c474fc | 32 | static void cb1() { //将USB串口上得到的消息通过WIFI模块发出去 |
zhangyx | 1:3b487c4813a2 | 33 | //ser2esp8266.putc(getchar()); |
brainliang | 0:63af4719467f | 34 | } |
brainliang | 0:63af4719467f | 35 | #endif |
brainliang | 0:63af4719467f | 36 | |
zhangyx | 2:b10925c474fc | 37 | static void simple_callback() { //将WIFI模块得到的消息通过USB串口打印到电脑上 |
zhangyx | 1:3b487c4813a2 | 38 | // putchar(ser2esp8266.getc()); |
brainliang | 0:63af4719467f | 39 | } |
brainliang | 0:63af4719467f | 40 | //#endif |
brainliang | 0:63af4719467f | 41 | |
zhangyx | 2:b10925c474fc | 42 | void Esp8266::gotResponse(char *token, char *param) |
zhangyx | 2:b10925c474fc | 43 | { |
zhangyx | 2:b10925c474fc | 44 | printf("gotResponse %s %s\r\n", token, param); |
zhangyx | 2:b10925c474fc | 45 | if(strcmp(token, "connected") == 0) |
zhangyx | 2:b10925c474fc | 46 | mqtt_start = true; |
zhangyx | 2:b10925c474fc | 47 | else if(strcmp(token, "wifi") == 0){ |
zhangyx | 2:b10925c474fc | 48 | if(*param == '5') |
zhangyx | 2:b10925c474fc | 49 | network_start = true; |
zhangyx | 2:b10925c474fc | 50 | } |
zhangyx | 2:b10925c474fc | 51 | } |
brainliang | 0:63af4719467f | 52 | |
brainliang | 0:63af4719467f | 53 | // 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 | 54 | // 数据格式约定: #token+data |
zhangyx | 1:3b487c4813a2 | 55 | void Esp8266::esp8266_rxCallback() { |
brainliang | 0:63af4719467f | 56 | char in = ser2esp8266.getc(); |
brainliang | 0:63af4719467f | 57 | enum{STATE_WAIT, STATE_TOKEN, STATE_PARAM}; |
brainliang | 0:63af4719467f | 58 | static uint8_t state = STATE_WAIT; |
brainliang | 0:63af4719467f | 59 | static int tokenLen, paramLen; |
brainliang | 0:63af4719467f | 60 | switch(state){ |
brainliang | 0:63af4719467f | 61 | case STATE_WAIT: |
brainliang | 0:63af4719467f | 62 | if(in == '#'){ |
brainliang | 0:63af4719467f | 63 | tokenLen = 0; |
brainliang | 0:63af4719467f | 64 | state = STATE_TOKEN; |
brainliang | 0:63af4719467f | 65 | } |
brainliang | 0:63af4719467f | 66 | break; |
brainliang | 0:63af4719467f | 67 | case STATE_TOKEN: |
brainliang | 0:63af4719467f | 68 | if(in == '+' || in == '\r' || in == '\n'){ |
brainliang | 0:63af4719467f | 69 | esp_tokenBuf[tokenLen] = '\0'; |
brainliang | 0:63af4719467f | 70 | if(in == '+'){ |
brainliang | 0:63af4719467f | 71 | paramLen = 0; |
brainliang | 0:63af4719467f | 72 | state = STATE_PARAM; |
brainliang | 0:63af4719467f | 73 | }else{ |
zhangyx | 2:b10925c474fc | 74 | gotResponse(esp_tokenBuf, NULL); |
brainliang | 0:63af4719467f | 75 | //memcpy(esp_token, esp_tokenBuf, tokenLen); |
brainliang | 0:63af4719467f | 76 | //esp_token[tokenLen] = '\0'; |
brainliang | 0:63af4719467f | 77 | esp_buf_ready = true; |
brainliang | 0:63af4719467f | 78 | state = STATE_WAIT; |
brainliang | 0:63af4719467f | 79 | } |
brainliang | 0:63af4719467f | 80 | }else if(tokenLen+1 < sizeof(esp_tokenBuf)){ |
brainliang | 0:63af4719467f | 81 | esp_tokenBuf[tokenLen++] = in; |
brainliang | 0:63af4719467f | 82 | } |
brainliang | 0:63af4719467f | 83 | break; |
brainliang | 0:63af4719467f | 84 | case STATE_PARAM: |
brainliang | 0:63af4719467f | 85 | if(in == '\r' || in == '\n'){ |
brainliang | 0:63af4719467f | 86 | esp_paramBuf[paramLen] = '\0'; |
zhangyx | 2:b10925c474fc | 87 | gotResponse(esp_tokenBuf, esp_paramBuf); |
brainliang | 0:63af4719467f | 88 | //memcpy(esp_token, esp_tokenBuf, tokenLen); |
brainliang | 0:63af4719467f | 89 | //memcpy(esp_param, esp_paramBuf, paramLen); |
brainliang | 0:63af4719467f | 90 | //esp_token[tokenLen] = '\0'; |
brainliang | 0:63af4719467f | 91 | //esp_param[paramLen] = '\0'; |
brainliang | 0:63af4719467f | 92 | //ser2usb.putc('?'); |
brainliang | 0:63af4719467f | 93 | esp_buf_ready = true; |
brainliang | 0:63af4719467f | 94 | state = STATE_WAIT; |
brainliang | 0:63af4719467f | 95 | }else if(paramLen+1 < sizeof(esp_paramBuf)){ |
brainliang | 0:63af4719467f | 96 | esp_paramBuf[paramLen++] = in; |
brainliang | 0:63af4719467f | 97 | } |
brainliang | 0:63af4719467f | 98 | break; |
brainliang | 0:63af4719467f | 99 | } |
brainliang | 0:63af4719467f | 100 | } |
brainliang | 0:63af4719467f | 101 | |
brainliang | 0:63af4719467f | 102 | |
zhangyx | 1:3b487c4813a2 | 103 | Esp8266::Esp8266(PinName TX, PinName RX, const char *wifi_ssid, const char *wifi_passwd) //定义类的函数 |
zhangyx | 1:3b487c4813a2 | 104 | : network_start(false), mqtt_start(false), esp_buf_ready(false), ser2esp8266(TX, RX) |
brainliang | 0:63af4719467f | 105 | { |
brainliang | 0:63af4719467f | 106 | // serial to esp8266 init |
brainliang | 0:63af4719467f | 107 | ser2esp8266.baud(ser_baud); |
brainliang | 0:63af4719467f | 108 | #ifndef DEBUG |
zhangyx | 2:b10925c474fc | 109 | ser2esp8266.attach(callback(this,&Esp8266::esp8266_rxCallback), Serial::RxIrq); |
brainliang | 0:63af4719467f | 110 | #endif |
zhangyx | 1:3b487c4813a2 | 111 | //if (mode == 0) { // client mode |
brainliang | 0:63af4719467f | 112 | this->reset(); |
zhangyx | 1:3b487c4813a2 | 113 | this->connect_wifi(wifi_ssid, wifi_passwd); |
zhangyx | 2:b10925c474fc | 114 | while(!is_connected()){ |
zhangyx | 2:b10925c474fc | 115 | wait(0.5); |
zhangyx | 2:b10925c474fc | 116 | } |
brainliang | 0:63af4719467f | 117 | this->weblogin(); |
zhangyx | 1:3b487c4813a2 | 118 | //} else { |
zhangyx | 1:3b487c4813a2 | 119 | // |
zhangyx | 1:3b487c4813a2 | 120 | //} |
brainliang | 0:63af4719467f | 121 | } |
brainliang | 0:63af4719467f | 122 | |
brainliang | 0:63af4719467f | 123 | bool Esp8266::reset() { //定义类的函数 |
brainliang | 0:63af4719467f | 124 | ESP_CMD("node.restart()"); |
brainliang | 0:63af4719467f | 125 | wait(2); // 延迟2s |
brainliang | 0:63af4719467f | 126 | return true; |
brainliang | 0:63af4719467f | 127 | } |
brainliang | 0:63af4719467f | 128 | |
zhangyx | 1:3b487c4813a2 | 129 | bool Esp8266::connect_wifi(const char *wifi_ssid, const char *wifi_passwd) { //定义类的函数 |
brainliang | 0:63af4719467f | 130 | ESP_CMD("wifi.setmode(wifi.STATION)"); |
brainliang | 0:63af4719467f | 131 | ESP_CMD("wifi.sta.config([[%s]],[[%s]])", wifi_ssid, wifi_passwd); |
brainliang | 0:63af4719467f | 132 | wait(2); |
brainliang | 0:63af4719467f | 133 | // set auto autoconnect |
brainliang | 0:63af4719467f | 134 | ESP_CMD("wifi.sta.autoconnect(1)"); |
zhangyx | 2:b10925c474fc | 135 | return true; |
zhangyx | 2:b10925c474fc | 136 | } |
zhangyx | 2:b10925c474fc | 137 | |
zhangyx | 2:b10925c474fc | 138 | bool Esp8266::is_connected() |
zhangyx | 2:b10925c474fc | 139 | { |
brainliang | 0:63af4719467f | 140 | ESP_CMD("print('\\035wifi+'..wifi.sta.status())"); |
zhangyx | 2:b10925c474fc | 141 | wait(0.4); |
zhangyx | 2:b10925c474fc | 142 | return network_start; |
brainliang | 0:63af4719467f | 143 | } |
brainliang | 0:63af4719467f | 144 | |
brainliang | 0:63af4719467f | 145 | bool Esp8266::weblogin() { //定义类的函数 |
brainliang | 0:63af4719467f | 146 | // not implemented yet |
brainliang | 0:63af4719467f | 147 | return true; |
brainliang | 0:63af4719467f | 148 | } |
brainliang | 0:63af4719467f | 149 | |
brainliang | 0:63af4719467f | 150 | bool Esp8266::connect_mqtt_broker(char *ip) { //定义类的函数 |
brainliang | 0:63af4719467f | 151 | ESP_CMD("m = mqtt.Client('i_' .. node.chipid(), 120)"); |
zhangyx | 2:b10925c474fc | 152 | ESP_CMD("m:connect(\"%s\",1883,0,function(conn)print (\"\\035connected\"); end)", ip); |
zhangyx | 2:b10925c474fc | 153 | |
zhangyx | 2:b10925c474fc | 154 | do{ |
zhangyx | 2:b10925c474fc | 155 | wait(0.5); |
zhangyx | 2:b10925c474fc | 156 | }while(!mqtt_start); |
brainliang | 0:63af4719467f | 157 | return true; |
brainliang | 0:63af4719467f | 158 | } |
brainliang | 0:63af4719467f | 159 | |
brainliang | 0:63af4719467f | 160 | bool Esp8266::publish(char *topic, char *data, int size) { //定义类的函数 |
brainliang | 0:63af4719467f | 161 | //if (mqtt_start) { |
zhangyx | 2:b10925c474fc | 162 | ESP_CMD("m:publish('/values/i_'..node.chipid()..'/%s',\"%s\",0,0)", topic, data); |
brainliang | 0:63af4719467f | 163 | //} |
brainliang | 0:63af4719467f | 164 | wait(0.1); |
brainliang | 0:63af4719467f | 165 | return true; |
brainliang | 0:63af4719467f | 166 | } |
brainliang | 0:63af4719467f | 167 | |
brainliang | 0:63af4719467f | 168 | bool Esp8266::subscribe_poll(char *topic, char *data, int size) { //定义类的函数 |
brainliang | 0:63af4719467f | 169 | //if (mqtt_start) { |
brainliang | 0:63af4719467f | 170 | ESP_CMD("m:subscribe(\"%s\", 0)", topic); |
brainliang | 0:63af4719467f | 171 | wait(0.1); |
brainliang | 0:63af4719467f | 172 | //} |
brainliang | 0:63af4719467f | 173 | ESP_CMD("m:on(\"message\", function(conn, topic, data)"); |
brainliang | 0:63af4719467f | 174 | ESP_CMD("if topic == \"%s\" then", topic); |
brainliang | 0:63af4719467f | 175 | ESP_CMD("print(\"\\035\"..topic..\"+\"..data)"); |
brainliang | 0:63af4719467f | 176 | ESP_CMD("end"); |
brainliang | 0:63af4719467f | 177 | ESP_CMD("end)"); |
brainliang | 0:63af4719467f | 178 | |
brainliang | 0:63af4719467f | 179 | ESP_CMD("m:unsubscribe(\"%s\")", topic); |
brainliang | 0:63af4719467f | 180 | return true; |
brainliang | 0:63af4719467f | 181 | } |