main.cpp

00001 /*
00002  * Author: Dan Cohen
00003  * Date: 15/02/14
00004  * Notes: Displays the IP address then any data that is sent from a connecting client
00005  * Client command line on my system:  
00006  * ./client 192.168.2.3 2000
00007  * 
00008 */
00009 
00010 
00011 #include "mbed.h"
00012 #include "EthernetInterface.h"
00013 #include "eth_status.h"
00014 #include "SeeedGrayOLED.h"
00015 #include "USBSerial.h"
00016 
00017 DigitalOut led1(LED1);
00018 DigitalOut led2(LED2);
00019 DigitalOut led3(LED3);
00020 DigitalOut led4(LED4);
00021 
00022 SeeedGrayOLED SeeedGrayOled(P0_10, P0_11);
00023 
00024 USBSerial serial;
00025 
00026 //ETHERNET
00027 #define ECHO_SERVER_PORT   2000
00028 
00029 EthernetInterface    eth;
00030 TCPSocketServer      server;
00031 TCPSocketConnection  connection;
00032 
00033 char readBuffer[1024];
00034 
00035 // This is required because the Seeed Arch Pro doesn't have a 
00036 // unique MAC address (if you don't have this function then the Ethernet Interface init()
00037 // function will hang when it tries to find it.
00038 extern "C" void mbed_mac_address(char *mac)
00039 {
00040 
00041     mac[0] = 0x00;
00042     mac[1] = 0x02;
00043     mac[2] = 0xF7;
00044     mac[3] = 0xF1;
00045     mac[4] = 0x91;
00046     mac[5] = 0x9F;
00047 };
00048 
00049 int Init()
00050 {
00051     led1 = 1;
00052     led2 = 1;
00053     led3 = 1;
00054     led4 = 1;
00055 
00056     // Initialize the OLED display
00057     SeeedGrayOled.init();             // initialize SEEED OLED display
00058     SeeedGrayOled.clearDisplay();     // Clear Display.
00059     SeeedGrayOled.setNormalDisplay(); // Set Normal Display Mode
00060     SeeedGrayOled.setVerticalMode();  // Set to vertical mode for displaying text
00061 
00062     SeeedGrayOled.setTextXY(1,0);     //set Cursor to first line, 0th column
00063 
00064     SeeedGrayOled.setGrayLevel(15);   //Set Grayscale level. Any number between 0 - 15.
00065 
00066     eth.init();
00067     serial.printf("initiated\n");
00068 
00069     eth.connect();
00070     serial.printf("connected\n");
00071     serial.printf("My IP address: %s\n\n", eth.getIPAddress());
00072     SeeedGrayOled.clearDisplay();     // Clear Display.
00073     SeeedGrayOled.setTextXY(1,0); 
00074     SeeedGrayOled.putString("My IP:");
00075     SeeedGrayOled.setTextXY(3,0); 
00076     SeeedGrayOled.putString(eth.getIPAddress());
00077 
00078     server.bind(ECHO_SERVER_PORT);
00079     serial.printf("bound to port %d\n", ECHO_SERVER_PORT);
00080     server.listen(1);
00081     serial.printf("%s  - Speed: %d Mbps\n", get_transmission_status(), get_connection_speed());
00082 
00083     return 0;
00084 }
00085 
00086 int main()
00087 {
00088 
00089     Init();
00090 
00091     while(true) {
00092         serial.printf("\nWait for new connection...\n");
00093         server.accept(connection);
00094 
00095         led3 = 0;
00096 
00097         serial.printf("Connection from: %s\n", connection.get_address());
00098         SeeedGrayOled.setTextXY(5,0); 
00099         SeeedGrayOled.putString("Connect IP: ");
00100         SeeedGrayOled.setTextXY(7,0);         
00101         SeeedGrayOled.putString(connection.get_address());
00102 
00103         char buffer[300];
00104         int ret;
00105 
00106         ret = connection.receive(buffer, sizeof(buffer)-1);
00107         if (ret <= 0)  {
00108             serial.printf("didn't get any message from the server connection\n");
00109         } else {
00110             buffer[ret] = '\0';
00111             serial.printf("Received %d chars from server:\n%s\n", ret, buffer);
00112         }
00113 
00114         char retBuffer[300];
00115         sprintf(retBuffer, "%d", buffer);
00116 
00117         serial.printf("Sending %d chars back to client :\n%s\n", ret, buffer);
00118         ret = connection.send_all   (buffer, sizeof(buffer)-1);
00119         SeeedGrayOled.setTextXY(9,0);        
00120         SeeedGrayOled.putString("D:          ");   
00121         SeeedGrayOled.setTextXY(9,4);        
00122         SeeedGrayOled.putString(buffer);
00123         
00124         connection.close();
00125 
00126         led3 = 1;
00127 
00128     }
00129 
00130 }