simon mestdagh / Mbed OS tcp-server

van Robin en Simon

Dependencies:   C12832

main.cpp@2:390c3c1cdf42, 2020-11-07 (annotated)

Committer:
simonmestdagh
Date:
Sat Nov 07 14:52:01 2020 +0000
Revision:
2:390c3c1cdf42
Parent:
1:b658dfbe2a7c 
server robin en simon

Who changed what in which revision?

UserRevisionLine numberNew contents of line
deepikabhavnani 0:ddb5698aa782 1 #include "mbed.h"
deepikabhavnani 0:ddb5698aa782 2 #include "EthernetInterface.h"
simonmestdagh 2:390c3c1cdf42 3 #include "C12832.h"
simonmestdagh 2:390c3c1cdf42 4
simonmestdagh 2:390c3c1cdf42 5 C12832 lcd(D11, D13, D12, D7, D10);
simonmestdagh 2:390c3c1cdf42 6 DigitalOut led(LED1);
simonmestdagh 2:390c3c1cdf42 7 PwmOut r (D5);
simonmestdagh 2:390c3c1cdf42 8 PwmOut g (D8);
simonmestdagh 2:390c3c1cdf42 9 PwmOut b (D9);
simonmestdagh 2:390c3c1cdf42 10 EthernetInterface eth;
simonmestdagh 2:390c3c1cdf42 11 TCPSocket client;
simonmestdagh 2:390c3c1cdf42 12 TCPServer srv(&eth);
simonmestdagh 2:390c3c1cdf42 13
simonmestdagh 2:390c3c1cdf42 14 void setRGB(int pot)
simonmestdagh 2:390c3c1cdf42 15 {
simonmestdagh 2:390c3c1cdf42 16
simonmestdagh 2:390c3c1cdf42 17 r = (float)pot;
simonmestdagh 2:390c3c1cdf42 18 g = (float)(255-pot);
simonmestdagh 2:390c3c1cdf42 19 b = (float)0 ;
pcordemans 1:b658dfbe2a7c 20
pcordemans 1:b658dfbe2a7c 21
simonmestdagh 2:390c3c1cdf42 22 }
simonmestdagh 2:390c3c1cdf42 23
simonmestdagh 2:390c3c1cdf42 24 void setupSocket()
simonmestdagh 2:390c3c1cdf42 25 {
simonmestdagh 2:390c3c1cdf42 26
simonmestdagh 2:390c3c1cdf42 27 eth.set_network("192.168.0.18","255.255.255.0","192.168.0.1");
simonmestdagh 2:390c3c1cdf42 28 eth.connect();
simonmestdagh 2:390c3c1cdf42 29 printf("The Server IP address is '%s'\n\r", eth.get_ip_address());
simonmestdagh 2:390c3c1cdf42 30 srv.bind(4000);
simonmestdagh 2:390c3c1cdf42 31 srv.listen();
simonmestdagh 2:390c3c1cdf42 32 }
simonmestdagh 2:390c3c1cdf42 33
simonmestdagh 2:390c3c1cdf42 34 void lcdScreen(float temperature){
simonmestdagh 2:390c3c1cdf42 35 lcd.cls();
simonmestdagh 2:390c3c1cdf42 36 lcd.locate(0,3);
simonmestdagh 2:390c3c1cdf42 37 lcd.printf("temperature: %d\r\n", temperature);
simonmestdagh 2:390c3c1cdf42 38 }
simonmestdagh 2:390c3c1cdf42 39
simonmestdagh 2:390c3c1cdf42 40 float temperatureDecoder(uint8_t left, uint8_t right)
simonmestdagh 2:390c3c1cdf42 41 {
simonmestdagh 2:390c3c1cdf42 42 uint16_t tempLowHigh = ((left & 0xFF) << 8 ) | (right & 0xFF);
simonmestdagh 2:390c3c1cdf42 43 tempLowHigh = tempLowHigh >> 5;
simonmestdagh 2:390c3c1cdf42 44 //Sign extend negative numbers
simonmestdagh 2:390c3c1cdf42 45 if (tempLowHigh & (1 << 10)) {
simonmestdagh 2:390c3c1cdf42 46 tempLowHigh |= 0xFC00;
simonmestdagh 2:390c3c1cdf42 47 }
simonmestdagh 2:390c3c1cdf42 48
simonmestdagh 2:390c3c1cdf42 49 //Return the temperature in °C
simonmestdagh 2:390c3c1cdf42 50 return tempLowHigh * 0.125;
simonmestdagh 2:390c3c1cdf42 51 }
simonmestdagh 2:390c3c1cdf42 52
deepikabhavnani 0:ddb5698aa782 53
deepikabhavnani 0:ddb5698aa782 54 int main()
deepikabhavnani 0:ddb5698aa782 55 {
pcordemans 1:b658dfbe2a7c 56 printf("Server example\n\r");
simonmestdagh 2:390c3c1cdf42 57 setupSocket();
simonmestdagh 2:390c3c1cdf42 58
simonmestdagh 2:390c3c1cdf42 59
simonmestdagh 2:390c3c1cdf42 60
simonmestdagh 2:390c3c1cdf42 61 while(true) {
simonmestdagh 2:390c3c1cdf42 62
pcordemans 1:b658dfbe2a7c 63 SocketAddress client_addr;
pcordemans 1:b658dfbe2a7c 64 char *buffer = "Hello TCP client!\r\n";
simonmestdagh 2:390c3c1cdf42 65
pcordemans 1:b658dfbe2a7c 66 srv.accept(&client, &client_addr);
simonmestdagh 2:390c3c1cdf42 67
simonmestdagh 2:390c3c1cdf42 68 printf("Accepted %s:%d\n\r", client_addr.get_ip_address(),
simonmestdagh 2:390c3c1cdf42 69 client_addr.get_port());
simonmestdagh 2:390c3c1cdf42 70
pcordemans 1:b658dfbe2a7c 71 client.send(buffer, 256);
simonmestdagh 2:390c3c1cdf42 72
simonmestdagh 2:390c3c1cdf42 73 char rbuffer[64];
simonmestdagh 2:390c3c1cdf42 74 int rcount = client.recv(rbuffer, sizeof rbuffer);
simonmestdagh 2:390c3c1cdf42 75 float temperature = temperatureDecoder(rbuffer[1],rbuffer[2]);
simonmestdagh 2:390c3c1cdf42 76
simonmestdagh 2:390c3c1cdf42 77 printf("received: %d\r\n", rcount);
simonmestdagh 2:390c3c1cdf42 78 printf("packet PWM: %d\r\n", rbuffer[0]);
simonmestdagh 2:390c3c1cdf42 79 printf("packet temp: %d\r\n", temperature);
simonmestdagh 2:390c3c1cdf42 80 setRGB(rbuffer[0]);
pcordemans 1:b658dfbe2a7c 81 client.close();
simonmestdagh 2:390c3c1cdf42 82
pcordemans 1:b658dfbe2a7c 83 }
simonmestdagh 2:390c3c1cdf42 84 }