main.cpp

00001 //---------------------------------------------------------------------------------------------
00002 /*
00003 Copyright (c) 2010 ARM Ltd
00004  
00005 Permission is hereby granted, free of charge, to any person obtaining a copy
00006 of this software and associated documentation files (the "Software"), to deal
00007 in the Software without restriction, including without limitation the rights
00008 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00009 copies of the Software, and to permit persons to whom the Software is
00010 furnished to do so, subject to the following conditions:
00011  
00012 The above copyright notice and this permission notice shall be included in
00013 all copies or substantial portions of the Software.
00014  
00015 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00016 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00017 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00018 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00019 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00020 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00021 THE SOFTWARE.
00022 */
00023 //---------------------------------------------------------------------------------------------
00024 #include "mbed.h"
00025 #include "EthernetNetIf.h"
00026 #include "SuperTweetV1XML.h"
00027 #include "twitter_config.h"
00028 //---------------------------------------------------------------------------------------------
00029 DigitalOut myled(LED1);
00030 DigitalIn button(p20);
00031 Serial pc(USBTX, USBRX); // tx, rx
00032 //---------------------------------------------------------------------------------------------
00033 #define internaldebug // send debug messages to USB Serial port (9600,1,N)
00034 //#define dhcpenable    // auto-setup IP Address from DHCP router
00035 //---------------------------------------------------------------------------------------------
00036 // Ethernet Object Setup
00037 //---------------------------------------------------------------------------------------------
00038 #ifdef dhcpenable
00039   EthernetNetIf eth;  
00040 #else
00041   EthernetNetIf eth(
00042     IpAddr(192,168,1,100), //IP Address
00043     IpAddr(255,255,255,0), //Network Mask
00044     IpAddr(192,168,1,254), //Gateway
00045     IpAddr(192,168,1,254)  //DNS
00046   );
00047 #endif
00048 //---------------------------------------------------------------------------------------------
00049 // GLOBAL VARS / FUNCTIONS
00050 //---------------------------------------------------------------------------------------------
00051 // SuperTweet - Twitter account data (twitter_config.h)
00052 //#define YOUR_ACCOUNT    "twitterid"
00053 //#define YOUR_PASSWORD   "passwd"
00054 
00055 SuperTweetV1XML st(YOUR_ACCOUNT, YOUR_PASSWORD);
00056 
00057 /**
00058  * Callback function for postStatusesUpdate.
00059  *
00060  * @param buf A pointer to a buffer.
00061  * @param siz A size of the buffer.
00062  */
00063 void func(char *buf, size_t siz) 
00064 {
00065 #if 0
00066     // This is for checking a response.     
00067     for(int i = 0; i < siz; i++)
00068     { 
00069       printf("%c", buf[i]);
00070     }
00071 #endif
00072 }
00073 //---------------------------------------------------------------------------------------------
00074 // MISC
00075 //---------------------------------------------------------------------------------------------
00076 // Hack - Expose 'special' internal mbed ethernet functions
00077 extern "C" void mbed_reset();
00078 //extern "C" void mbed_mac_address(char *mac);
00079 
00080 //---------------------------------------------------------------------------------------------
00081 // Global Functions
00082 //---------------------------------------------------------------------------------------------
00083 void SendTweet(char *pMessage)
00084 {   
00085   #ifdef internaldebug
00086     printf("\r\n %s \r\n",pMessage);
00087   #endif  
00088 
00089   HTTPResult r = st.postStatusesUpdate(std::string(pMessage), func);
00090   printf("r=%d\n", (int)r);
00091   /*
00092   * Note:
00093   * I don't know why sometime it get a error.
00094   * I think it a bug in a mbed library.
00095   */
00096   if (r != 0) 
00097   {
00098     printf("Resetting...\n");
00099     mbed_reset();
00100   }    
00101 }
00102 //---------------------------------------------------------------------------------------------
00103 // MAIN
00104 //---------------------------------------------------------------------------------------------
00105 int main() 
00106 {
00107   char text[1024];
00108   
00109   // Set Serial Port Transfer Rate
00110   pc.baud(115200);    
00111 
00112   //--------------------------------------------------------
00113   // Setting Ethernet
00114   //--------------------------------------------------------    
00115   #ifdef internaldebug
00116     printf("\r\nSetting up Ethernet interface!\r\n");
00117   #endif
00118   // Create return object for error check
00119   EthernetErr ethErr = eth.setup(); 
00120   if(ethErr)
00121   {
00122     #ifdef internaldebug
00123       printf("\r\nError %d in Ethernet setup.\r\n", ethErr);
00124     #endif
00125     return -1;
00126   }
00127   #ifdef internaldebug
00128     printf("\r\nEthernet setup completed with success!\r\n");
00129   #endif  
00130   //--------------------------------------------------------    
00131 
00132   wait(5);
00133 
00134   //--------------------------------------------------------    
00135   // Post IP/MAC address into Twitter
00136   //--------------------------------------------------------    
00137   // Get IP Address
00138   IpAddr ip = eth.getIp();
00139   
00140   // Sending Twitter Message
00141   snprintf(text, sizeof(text), "Auto-posting from ARM Microcontroller mbed NXP LPC1768 from: %d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3]); 
00142 
00143   SendTweet(&text[0]);  
00144   //--------------------------------------------------------    
00145 
00146   // main loop
00147   bool flag_sending = false;
00148   while(1) 
00149   {  
00150     if(!button)
00151     {
00152       if(flag_sending)
00153         continue;
00154     
00155       myled = 1;
00156 
00157       // Sending Twitter Message (custom)
00158       snprintf(text, sizeof(text), "Button Pressed Message sent from ARM Microcontroller mbed NXP LPC1768"); 
00159 
00160       SendTweet(&text[0]);        
00161       
00162       flag_sending = true;
00163     }
00164     else
00165     {
00166       myled = 0;
00167       flag_sending = false;
00168     }
00169 
00170     // debounce time!
00171     wait(0.1);
00172   }
00173 }
00174 //---------------------------------------------------------------------------------------------