Diff: main.cpp

Revision:

13:26905142e97b

Parent:

12:9e383f611c45

Child:

14:efd42910791b

--- a/main.cpp	Wed Oct 15 00:32:23 2014 +0000
+++ b/main.cpp	Sun Oct 19 07:05:29 2014 +0000
@@ -1,140 +1,78 @@
-/* mbed Microcontroller Library
- * Copyright (c) 2006-2013 ARM Limited
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- 
- /**
- *  \brief EECS149 demo
- *  \author Antonio Iannopollo
- *
- * This demo illustrates how to connect the mbed KL25Z platform to internet 
- * thorugh the CC3000 wifi breakout board (http://www.adafruit.com/product/1469).
- * Connections between the KL25Z and the CC3000 are made according to the 
- * guide at https://learn.adafruit.com/adafruit-cc3000-wifi -- KL25Z and arduino
- * UNO are pin to pin compatible --
- *
- * This application will read a number from a remote text file and change the 
- * color of the onboard LED from green to red if the number is >0, and vice 
- * versa.
- *
- * The number in the remote file represents the number of unread emails with
- * subject equal to [EECS 149/249] in Antonio's account.
- * The remote text file is written by a server script 
- * (https://github.com/ianno/eecs149_notifier).
- *
- * This application uses the following libraries:
- * - cc3000_hostdriver_mbedsocket 
- *   (http://developer.mbed.org/users/Kojto/code/cc3000_hostdriver_mbedsocket/)
- * - HTTPClient (http://developer.mbed.org/users/donatien/code/HTTPClient/)
- */
- 
+/**
+*  \brief CS294-84 demo
+*  \author Ben Zhang, Antonio Iannopollo
+*
+* This sampel code illustrates how to connect the mbed KL25Z platform to internet
+* thorugh the CC3000 wifi breakout board (http://www.adafruit.com/product/1469).
+* Connections between the KL25Z and the CC3000 are made according to the
+* guide at https://learn.adafruit.com/adafruit-cc3000-wifi -- KL25Z and arduino
+* UNO are pin to pin compatible --
+*
+* This application uses the following libraries:
+* - cc3000_hostdriver_mbedsocket
+*   (http://developer.mbed.org/users/Kojto/code/cc3000_hostdriver_mbedsocket/)
+* - HTTPClient (http://developer.mbed.org/users/donatien/code/HTTPClient/)
+*/
+
 #include "mbed.h"
 #include "cc3000.h"
-
 #include "HTTPClient.h"
 
-#define MAIL_URL "http://www.eecs.berkeley.edu/~antonio/149_count.txt"
-
-
-using namespace mbed_cc3000;
-
-//KL25Z wifi connection
-//we need to define connection pins for:
-//- IRQ             (pin D3)
-//- Enable          (pin D5)
-//- SPI CS (pin D10) 
-//- SPI configuration:
-//  - MOSI (pin D11)
-//  - MISO (pin D12)
-//  - SCLK (pin D13)
-//plus wifi network SSID, password, security level and smart-configuration flag.
-cc3000 wifi(D3, D5, D10, SPI(D11, D12, D13), "antonio", "0123456789", WPA2, false);
+// KL25Z wifi connection
+// we need to define connection pins for:
+// - IRQ      => (pin D3)
+// - Enable   => (pin D5)
+// - SPI CS   => (pin D10)
+// - SPI MOSI => (pin D11)
+// - SPI MISO => (pin D12)
+// - SPI CLK  => (pin D13)
+// plus wifi network SSID, password, security level and smart-configuration flag.
+mbed_cc3000::cc3000 wifi(D3, D5, D10, SPI(D11, D12, D13), "SSID", "PASSWORD", WPA2, false);
 
-//setup the serial connection to the host machine (used to print debug info)
-Serial pc(USBTX, USBRX);
+// create an http instance
+HTTPClient http;
 
-//global vars
-HTTPClient http;
-char str[10];
-int num_emails;
+// str is used to hold the response data
+char str[512];
 
-//directly control the green and red onboard LEDs
-//LEDs are internally pulled-up. To turn on a LED, set its pin to 0.
+// setup the serial connection, and LEDs
+Serial pc(USBTX, USBRX);
 DigitalOut led_red(LED_RED);
-DigitalOut led_green(LED_GREEN); 
-
+DigitalOut led_green(LED_GREEN);
 
-int main() {
-    
-    //initially turn off both the leds.
-    //Blue LED will be always on because it shares the connection with the SPI clock
-    led_red = 1;
+int main()
+{
+    // by default, it's red
+    led_red = 0;
     led_green = 1;
 
-    printf("EECS149 email notifier. \r\n");
-    
+    // print message to indicate the program has started
+    pc.printf("CC3000 Sample Program\r\n");
     wifi.init();
-    
+
     while(1) {
-        
-        //continuosly check connection status
-        //If not connected, try to set up a connection
+        // continuosly check connection status
         if(wifi.is_connected() == false) {
-            
-            //try to connect
+            // try to connect
             if (wifi.connect() == -1) {
                 printf("Failed to connect. Please verify connection details and try again. \r\n");
             } else {
-                printf("IP address: %s \r\n",wifi.getIPAddress());
-                
+                printf("IP address: %s \r\n", wifi.getIPAddress());
+
                 //once connected, turn green LED on and red LED off
                 led_red = 1;
-                led_green = 0;  
+                led_green = 0;
             }
         } else {
-            //if the board is connected, fetch the remote file
-            
-            printf("\r\nTrying to fetch mail info... \r\n");
-            
-            //GET remote file data
-            int ret = http.get(MAIL_URL, str, 128);
-            //analyze ret code
+            int ret = http.get("http://www.eecs.berkeley.edu/~benzh/hello.txt", str, 128);
             if (!ret) {
-                printf("Page fetched successfully - read %d characters \r\n", strlen(str));
-                printf("Result: %s \r\n", str);
-                
-                num_emails = atoi(str);
-                
-                if(num_emails == 0) {
-                    //no unread emails, turn the green LED on and red LED off
-                    led_red = 1;
-                    led_green = 0;    
-                } else {
-                    //unread emails. Turn the green LED off and the red one on
-                    led_red = 0;
-                    led_green = 1;    
-                }
-                
-                
+                printf("Page fetched successfully - read %d characters\r\n", strlen(str));
+                printf("Result: %s\r\n", str);
             } else {
-                //error fetching remote file
-                printf("Error - ret = %d - HTTP return code = %d \r\n", ret, http.getHTTPResponseCode());
+                printf("Error - ret = %d - HTTP return code = %d\r\n", ret, http.getHTTPResponseCode());
             }
         }
-        //poll the remote file every 5 sec
-        wait(5.0);
+        // repeat after waiting for 1 sec
+        wait(1.0);
     }
-            
-
-}
+}
\ No newline at end of file