Diff: wifi_example.cpp

Revision:

0:cbe8a0553d45

diff -r 000000000000 -r cbe8a0553d45 wifi_example.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wifi_example.cpp	Wed Mar 29 03:08:46 2017 +0000
@@ -0,0 +1,159 @@
+/************************************************************/
+/*  (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
+    }
+}
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