Revision 4:1b8288ef7cbc, committed 2018-12-18

Comitter:

Tina Quach

Date:

Tue Dec 18 11:56:26 2018 -0500

Parent:

3:0d7c5cabd93f

Commit message:

parse server messages

Changed in this revision

--- a/main.cpp	Mon Dec 17 19:34:50 2018 -0500
+++ b/main.cpp	Tue Dec 18 11:56:26 2018 -0500
@@ -13,6 +13,14 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+#include <ios>
+#include <stdio.h>
+#include <string>       // std::string
+#include <iostream>     // std::cout
+#include <sstream>      // std::stringstream, std::stringbuf
+#include <vector>
+#include <iomanip>
+
 
 #include "mbed.h"
 #include "TCPSocket.h"
@@ -25,6 +33,7 @@
 #include "Json.h"
 
 #define WIFI_ESP32      3
+#define TOP      D5
 
 
 //#elif TARGET_GR_LYCHEE
@@ -52,6 +61,7 @@
 DigitalOut led3(LED3);
 DigitalOut led4(LED4);
 
+PwmOut pin(D5);
 
 int main()
 {
@@ -126,7 +136,7 @@
 
 
     // ******* END CONNECTING  *********/
-    
+
 
     // begin main loop
     while (true) {
@@ -143,15 +153,15 @@
 
     MbedJSONValue demo;
     MbedJSONValue payload;
-    
+    MbedJSONValue body;
 
     if (ws.read(recvbuffer)) {
       led = !led;
       led2 = !led2;
           printf("rcv: %s\r\n", recvbuffer);
-      
+
       //parse(demo, recvbuffer);
-      
+
       Json json (recvbuffer, strlen ( recvbuffer ) );
 
       if ( !json.isValidJson () )
@@ -164,11 +174,11 @@
           printf("Invalid JSON.  ROOT element is not Object: %s", recvbuffer);
         }
 
-      // Let's get the value of key "city" in ROOT object, and copy into 
+      // Let's get the value of key "city" in ROOT object, and copy into
       // payload
       char payloadValue [256];
       int payloadKeyIndex = json.findKeyIndexIn ( "payload", 0 );
-      
+
 
       if ( payloadKeyIndex == -1 )
         {
@@ -185,7 +195,7 @@
           int          valueLength = json.tokenLength ( payloadValueIndex );
           strncpy ( payloadValue, valueStart, valueLength );
           payloadValue [ valueLength ] = 0; // NULL-terminate the string
-          
+
           //let's print the value.  It should be "San Jose"
           printf( "payload: %s\n", payloadValue );
         }
@@ -200,22 +210,22 @@
       char bodyValue[32];
 
       int eventKeyIndex = json2.findKeyIndexIn ( "event", 0 );
-      int bodyKeyIndex = json2.findKeyIndexIn ( "body", 0 );  
-      
+      int bodyKeyIndex = json2.findKeyIndexIn ( "body", 0 );
+
       int eventValueIndex = json2.findChildIndexOf ( eventKeyIndex, -1 );
       int bodyValueIndex = json2.findChildIndexOf ( bodyKeyIndex, -1 );
-      
+
       if ( eventValueIndex > 0 )
         {
           const char * valueStart  = json2.tokenAddress ( eventValueIndex );
           int          valueLength = json2.tokenLength ( eventValueIndex );
           strncpy ( eventValue, valueStart, valueLength );
           eventValue [ valueLength ] = 0; // NULL-terminate the string
-          
+
           //let's print the value.  It should be "San Jose"
           printf( "event: %s\n", eventValue );
         }
-      
+
       if ( bodyValueIndex > 0 )
         {
           const char * valueStart  = json2.tokenAddress ( bodyValueIndex );
@@ -224,47 +234,90 @@
           /*          printf("%i\n",valueStart);
           printf("%i\n",valueLength);
           printf("%s\n",strinly);*/
-          
+
           strncpy ( bodyValue, valueStart, valueLength );
           bodyValue [ valueLength ] = 0; // NULL-terminate the string
-          
+
           //let's print the value.  It should be "San Jose"
           printf( "body: %s\n", bodyValue );
-        }
+
+          // OLD ATTEMPT THAT LEADS TO STACKOVERFLOW:
+          // using namespace std;
+          // string str(bodyValue);
+          // istringstream iss(bodyValue);
+          // vector<string> tokens;
+          // copy(istream_iterator<string>(iss),
+          //    istream_iterator<string>(),
+          //    back_inserter(tokens));
+
+          //  std::cout << "myvector contains:";
+          //   for (unsigned i=0; i<tokens.size(); i++)
+          //     std::cout << ' ' << tokens.at(i);
+          //   std::cout << '\n';
+
+          // NEW ATTEMPT BASED ON QUORA ANSWER
+          // std::vector<std::string> result;
+
+          // std::istringstream iss(bodyValue);
+          // for(std::string val; iss >> val; ) {
+          //   result.push_back(val);
+          // }
+
 
-      
+          // std::cout << "myvector contains:";
+          // for (unsigned i=0; i<result.size(); i++) {
+          //   std::cout << ' ' << result.at(i);
+          //   std::cout << '\n';
+
+          // ATTEMPT 3 W/ strtok http://www.cplusplus.com/reference/cstring/strtok/
+          // `${topspeed} ${topdirection} ${topstop} ${bottomspeed} ${bottomdirection} ${bottomstop}`
+          char* topspeed = strtok(bodyValue, " ");
+          char* topdirection = strtok(NULL, " ");
+          char* topstop = strtok(NULL, " ");
+          char* bottomspeed = strtok(NULL, " ");
+          char* bottomdirection = strtok(NULL, " ");
+          char* bottomstop = strtok(NULL, " ");
+          printf( "topspeed: %s\n", topspeed );
+          printf( "topdirection: %s\n", topdirection );
+          printf( "topstop: %s\n", topstop );
+          printf( "bottomspeed: %s\n", bottomspeed );
+          printf( "bottomdirection: %s\n", bottomdirection );
+          printf( "bottomstop: %s\n", bottomstop );
+      }
+
+
       //my_str = demo["payload"].get<std::string>();
-      
+
       //parse(payload,my_str);
       //my_stringo = payload();
 
       /*std::vector<char> b(s.length() + 1);
       std::strcpy(&b[0], s.c_str());
-      
+
       error_c = ws.send(&b[0]);
-    
+
       std::vector<char> zeroVec;
       b.swap(zeroVec);*/
 
 
-                   
+
       //printf("%s",payload);
-      
+
 
       memset(recvbuffer, 0, sizeof(recvbuffer));
       //recvbuffer.clear();
-        }
-    
+      }
+
     //std::string my_str;
     // int my_int;
     // bool my_bool;
-      
+
       //      my_str = demo[""][0].get<std::string>();
       //my_int = demo["my_array"][1].get<int>();
       //my_bool = demo["my_boolean"].get<bool>();
-      
+
 
-    
+
 
     //  MbedJSONValue heartbeat;
     //  std::string s;
@@ -298,7 +351,7 @@
     bodyM["body"] = "miracles happen sometimes";
     messageM["payload"] = bodyM;//&m[0];
     messageM["ref"] = "";*/
-    
+
     //std::vector<char> m(s.length() + 1);
     //std::strcpy(&m[0], s.c_str());
 
@@ -309,7 +362,7 @@
 
     //std::vector<char> n(s.length() + 1);
     //std::strcpy(&n[0], s.c_str());
-       
+
 
     //error_c = ws.send(&n[0]);
 
@@ -323,7 +376,7 @@
     //delete [] &bodyM;
 
     /*  char *recv;*/
-    
+
     /*  if (ws.read(recvbuffer)) {
       led = !led;
       led2 = !led2;
@@ -331,13 +384,11 @@
       memset(recvbuffer, 0, sizeof(recvbuffer));
       }*/
 
-    
+
     counter++;
     printf("count: %i\n",counter);
   }
 
-
-
     wifi.disconnect();
 
     printf("\nDone\n");

--- a/mbed_app.json	Mon Dec 17 19:34:50 2018 -0500
+++ b/mbed_app.json	Tue Dec 18 11:56:26 2018 -0500
@@ -6,11 +6,11 @@
 	},
         "wifi-ssid": {
             "help": "WiFi SSID",
-            "value": "\"Daniel's iPhone\""
+            "value": "\"MIT\""
         },
         "wifi-password": {
             "help": "WiFi Password",
-            "value": "\"doobadooba4\""
+            "value": "\"\""
         },
         "wifi-tx": {
             "help": "TX pin for serial connection to external device",