main.cpp

00001 #include "mbed.h"
00002 #include "EthernetInterface.h"
00003 #include "C12832.h"
00004 
00005 C12832 lcd(D11, D13, D12, D7, D10);
00006 DigitalOut led(LED1);
00007 PwmOut r (D5);
00008 PwmOut g (D8);
00009 PwmOut b (D9);
00010 EthernetInterface eth;
00011 TCPSocket client;
00012 TCPServer srv(&eth);
00013 
00014 void setRGB(int pot)
00015 {
00016 
00017     r = (float)pot;
00018     g = (float)(255-pot);
00019     b = (float)0 ;
00020 
00021 
00022 }
00023 
00024 void setupSocket()
00025 {
00026 
00027     eth.set_network("192.168.0.18","255.255.255.0","192.168.0.1");
00028     eth.connect();
00029     printf("The Server IP address is '%s'\n\r", eth.get_ip_address());
00030     srv.bind(4000);
00031     srv.listen();
00032 }
00033 
00034 void lcdScreen(float temperature){
00035     lcd.cls();
00036     lcd.locate(0,3);
00037     lcd.printf("temperature: %d\r\n", temperature);
00038     }
00039 
00040 float temperatureDecoder(uint8_t left, uint8_t right)
00041 {
00042     uint16_t tempLowHigh = ((left & 0xFF) << 8 ) | (right & 0xFF);
00043     tempLowHigh =  tempLowHigh >> 5;
00044 //Sign extend negative numbers
00045     if (tempLowHigh & (1 << 10)) {
00046         tempLowHigh |= 0xFC00;
00047     }
00048 
00049 //Return the temperature in °C
00050     return tempLowHigh * 0.125;
00051 }
00052 
00053 
00054 int main()
00055 {
00056     printf("Server example\n\r");
00057     setupSocket();
00058 
00059 
00060 
00061     while(true) {
00062 
00063         SocketAddress client_addr;
00064         char *buffer = "Hello TCP client!\r\n";
00065 
00066         srv.accept(&client, &client_addr);
00067 
00068         printf("Accepted %s:%d\n\r", client_addr.get_ip_address(),
00069                client_addr.get_port());
00070 
00071         client.send(buffer, 256);
00072 
00073         char rbuffer[64];
00074         int rcount = client.recv(rbuffer, sizeof rbuffer);
00075         float temperature = temperatureDecoder(rbuffer[1],rbuffer[2]);
00076 
00077         printf("received: %d\r\n", rcount);
00078         printf("packet PWM: %d\r\n", rbuffer[0]);
00079         printf("packet temp: %d\r\n", temperature);
00080         setRGB(rbuffer[0]);
00081         client.close();
00082 
00083     }
00084 }