s
wifi_example.cpp
- Committer:
- TaylorGy
- Date:
- 2017-03-29
- Revision:
- 0:cbe8a0553d45
- Child:
- 1:8512a7d76959
File content as of revision 0:cbe8a0553d45:
/************************************************************/ /* (C) 2016 Beijing ARM Accelerator Technology Co., Ltd. */ /* Description: Wifi Client by using Grove_wifi module. */ /* Author: ss.pan */ /* Version: 1.01 */ /* Date: 2017-03-28 */ /************************************************************/ #include "wifi_example.h" ESP8266 wifi(PA_9,PA_10); Serial pc(SERIAL_TX, SERIAL_RX); EdpPacket* send_pack; char send_buf[MAX_SEND_BUF_LEN]; /** * @brief initial ESP8266,and connect to wifi ap **/ void connectInit(void) { bool ret; pc.printf("starting......\r\n"); wifi.reset(); wait_ms(500); ret = wifi.startup(1); //start as client mode wait_ms(200); if(ret != true) { pc.printf("startup failed\r\n"); ret = true; } else { pc.printf("set as client mode\r\n"); } wifi.connect(APNAME,APPASSWD); //conenet to a existed wifi ap wait_ms(200); ret = wifi.isConnected(); //check whether connect successed if(ret != true) { pc.printf("connect failed\r\n"); ret = true; } else { pc.printf("now connected!\r\n"); } pc.printf("the ip address is : %s\r\n",wifi.getIPAddress()); //send ip address to pc ret = wifi.open("TCP", TCPNUM, TCPADD, TCPPORT); //connte to a TCP socket wait_ms(200); checkSocketStatus(); } /** * @brief checek socket status by calling a rebuilded function ESP8266::isOpen() **/ int checkSocketStatus(void) { int res; res = wifi.isOpen(); switch(res) { case 0: { pc.printf("socket conneceted successfully\r\n"); return res; } case -1: { pc.printf("unknown error\r\n"); return res; } case -2: { pc.printf("connected to ap, get an ip address\r\n"); return res; } case -4: { pc.printf("lost connection\r\n"); return res; } case -5: { pc.printf("unconnected to ap\r\n"); return res; } default: { pc.printf("unknown error:%d\r\n",res); break; } } return; } /** * @brief send cJSON type data **/ void sendJsonDat(char* dataName, float data) { bool ret; cJSON *json_data = cJSON_CreateObject(); //create a new json data cJSON_AddNumberToObject(json_data, dataName, data); //pack data into json package send_pack = PacketSavedataJson(DEVICEID, json_data, 3); //pack send data into EDP package pc.printf("now sending JSON from data to OneNet\r\n"); ret = wifi.send(0,(const char*)send_pack->_data,send_pack->_write_pos); //send packge to OneNet Cloud if(ret != true) { //check whether send successfully pc.printf("failed to send Json data\r\n"); ret = true; DeleteBuffer(&send_pack); //delete send_packge, unless may cause memory leak } else { pc.printf("Json data sended\r\n"); DeleteBuffer(&send_pack); //delete send_packge, unless may cause memory leak } cJSON_Delete(json_data); //delete json_data, unless may cause memory leak wait_ms(500); } /** * @brief send data to OneNet Cloud **/ void sendData(char* dataName, float data) { char text[25] = {0}; bool ret; memset(send_buf,0,MAX_SEND_BUF_LEN); //clean send_buf to ensure no remained buffer strcat(send_buf, ",;"); strcat(send_buf, dataName); strcat(send_buf, ","); sprintf(text,"%8.3f",data); strcat(send_buf, text); strcat(send_buf, ";"); pc.printf("now sending NORMAL data to OneNet\r\n"); send_pack = PacketSavedataSimpleString(DEVICEID, send_buf); //pack data into EDP Package ret = wifi.send(0,(const char*)send_pack->_data,send_pack->_write_pos); //send packge to OneNet Cloud if(ret != true) { //check whether send successfully pc.printf("failed to send normal data\r\n"); ret = true; DeleteBuffer(&send_pack); //delete send_packge, unless may cause memory leak } else { pc.printf("normal data sended\r\n"); DeleteBuffer(&send_pack); //delete send_packge, unless may cause memory leak } wait_ms(500); } /** * @brief make the device link to OneNet Cloud **/ void devLink(const char* devid, const char* auth_key) { bool ret; pc.printf("now linking to OneNet...\r\n"); send_pack = PacketConnect1(devid,auth_key); //pack Device authentication information into EDP package wait_ms(200); ret = wifi.send(0,(const char*)send_pack->_data,send_pack->_write_pos); //send packge to OneNet Cloud wait_ms(500); if(ret != true) { //check whether send successfully pc.printf("failed to link to OneNet\r\n"); ret = true; DeleteBuffer(&send_pack); //delete send_packge, unless may cause memory leak } else { pc.printf("linked to OneNet\r\n"); DeleteBuffer(&send_pack); //delete send_packge, unless may cause memory leak } }