Zoltan Hudak / Mbed OS HTTPServer_Echo_ENC28J60

A simple HTTP server echoing received requests. Ethernet connection is over an ENC28J60 board. Usage: Type the server's IP address into you web browser and hit <ENTER>.

Dependencies:   UIPEthernet

main.cpp@5:068f4c368ab0, 2015-11-28 (annotated)

Committer:
hudakz
Date:
Sat Nov 28 08:59:25 2015 +0000
Revision:
5:068f4c368ab0
Parent:
4:06fcbe983e24
Child:
6:c5eb31c60c8f
Updated.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hudakz 2:519b6ae198ae 1 /*
hudakz 0:8b40576553d2 2 * In this example the HTTP request (text) received from a browser is echoed (sent back) to the browser.
hudakz 3:f3bfd257e138 3 * Ethernet connection is via an ENC28J60 Ethernet board driven by the UIPEthernet library
hudakz 0:8b40576553d2 4 */
hudakz 0:8b40576553d2 5 #include "mbed.h"
hudakz 0:8b40576553d2 6 #include <UIPEthernet.h>
hudakz 0:8b40576553d2 7 #include <UIPServer.h>
hudakz 0:8b40576553d2 8 #include <UIPClient.h>
hudakz 0:8b40576553d2 9
hudakz 2:519b6ae198ae 10 Serial pc(USBTX, USBRX);
hudakz 2:519b6ae198ae 11
hudakz 4:06fcbe983e24 12 #define DHCP 1 // comment out this line if you'd like to use static IP address
hudakz 2:519b6ae198ae 13
hudakz 0:8b40576553d2 14 // UIPEthernet is the name of a global instance of UIPEthernetClass.
hudakz 0:8b40576553d2 15 // Do not change the name! It is used within the UIPEthernet library.
hudakz 0:8b40576553d2 16 // Adapt the SPI pin names to your mbed platform/board if not present yet.
hudakz 0:8b40576553d2 17 #if defined(TARGET_LPC1768)
hudakz 2:519b6ae198ae 18 UIPEthernetClass UIPEthernet(p11, p12, p13, p8); // mosi, miso, sck, cs
hudakz 5:068f4c368ab0 19 #elif defined(TARGET_NUCLEO_F103RB) || defined(TARGET_NUCLEO_L152RE) || defined(TARGET_NUCLEO_F030R8) || defined(TARGET_NUCLEO_F401RE) \
hudakz 5:068f4c368ab0 20 || defined(TARGET_NUCLEO_F302R8) || defined(TARGET_NUCLEO_L053R8) || defined(TARGET_NUCLEO_F411RE) || defined(TARGET_NUCLEO_F334R8) \
hudakz 5:068f4c368ab0 21 || defined(TARGET_NUCLEO_F072RB) || defined(TARGET_NUCLEO_F091RC) || defined(TARGET_NUCLEO_F303RE) || defined(TARGET_NUCLEO_F070RB) \
hudakz 5:068f4c368ab0 22 || defined(TARGET_KL25Z ) || defined(TARGET_KL46Z) || defined(TARGET_K64F) || defined(TARGET_KL05Z) \
hudakz 5:068f4c368ab0 23 || defined(TARGET_K20D50M) || defined(TARGET_K22F) \
hudakz 5:068f4c368ab0 24 || defined(TARGET_NRF51822) \
hudakz 5:068f4c368ab0 25 || defined(TARGET_RZ_A1H)
hudakz 2:519b6ae198ae 26 UIPEthernetClass UIPEthernet(D11, D12, D13, D10); // mosi, miso, sck, cs
hudakz 2:519b6ae198ae 27 #endif
hudakz 3:f3bfd257e138 28
hudakz 2:519b6ae198ae 29 // MAC number must be unique within the connected network. Modify as appropriate.
hudakz 2:519b6ae198ae 30 const uint8_t MY_MAC[6] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05 };
hudakz 2:519b6ae198ae 31
hudakz 2:519b6ae198ae 32 #if !defined(DHCP)
hudakz 5:068f4c368ab0 33 // In case you'd like to use static IP address:
hudakz 5:068f4c368ab0 34 // IP address must be unique and compatible with your network.
hudakz 5:068f4c368ab0 35 // Change as appropriate.
hudakz 2:519b6ae198ae 36 const IPAddress MY_IP(192, 168, 1, 181);
hudakz 0:8b40576553d2 37 #endif
hudakz 0:8b40576553d2 38
hudakz 2:519b6ae198ae 39 const uint16_t MY_PORT = 80; // for HTTP connection
hudakz 2:519b6ae198ae 40 EthernetServer myServer = EthernetServer(MY_PORT);
hudakz 2:519b6ae198ae 41
hudakz 2:519b6ae198ae 42 /**
hudakz 2:519b6ae198ae 43 * @brief
hudakz 2:519b6ae198ae 44 * @note
hudakz 2:519b6ae198ae 45 * @param
hudakz 2:519b6ae198ae 46 * @retval
hudakz 2:519b6ae198ae 47 */
hudakz 2:519b6ae198ae 48 int main(void) {
hudakz 3:f3bfd257e138 49
hudakz 3:f3bfd257e138 50 #if defined(DHCP)
hudakz 5:068f4c368ab0 51 pc.printf("Searching for DHCP server..\r\n");
hudakz 5:068f4c368ab0 52
hudakz 2:519b6ae198ae 53 if(UIPEthernet.begin(MY_MAC) != 1) {
hudakz 2:519b6ae198ae 54 pc.printf("No DHCP server found.\r\n");
hudakz 4:06fcbe983e24 55 pc.printf("Exiting application.\r\n");
hudakz 2:519b6ae198ae 56 return 0;
hudakz 2:519b6ae198ae 57 }
hudakz 5:068f4c368ab0 58 pc.printf("DHCP server found and configuration info received.\r\n");
hudakz 2:519b6ae198ae 59 IPAddress localIP = UIPEthernet.localIP();
hudakz 2:519b6ae198ae 60 pc.printf("Local IP = ");
hudakz 2:519b6ae198ae 61 for(uint8_t i = 0; i < 3; i++)
hudakz 2:519b6ae198ae 62 pc.printf("%d.", localIP[i]);
hudakz 2:519b6ae198ae 63 pc.printf("%d\r\n", localIP[3]);
hudakz 2:519b6ae198ae 64 #else
hudakz 2:519b6ae198ae 65 UIPEthernet.begin(MY_MAC, MY_IP);
hudakz 2:519b6ae198ae 66 #endif
hudakz 2:519b6ae198ae 67
hudakz 0:8b40576553d2 68 myServer.begin();
hudakz 0:8b40576553d2 69 while(1) {
hudakz 2:519b6ae198ae 70 EthernetClient client = myServer.available();
hudakz 2:519b6ae198ae 71 if(client) {
hudakz 2:519b6ae198ae 72 size_t size = client.available();
hudakz 0:8b40576553d2 73 if(size > 0) {
hudakz 2:519b6ae198ae 74 char* buf = (char*)malloc(size);
hudakz 0:8b40576553d2 75 size = client.read((uint8_t*)buf, size);
hudakz 0:8b40576553d2 76 if(buf[0] == 'G' && buf[1] == 'E' && buf[2] == 'T') {
hudakz 4:06fcbe983e24 77 pc.printf("GET request received:\n\r");
hudakz 4:06fcbe983e24 78 pc.printf(buf);
hudakz 5:068f4c368ab0 79 char echoHeader[256] = {};
hudakz 2:519b6ae198ae 80 sprintf
hudakz 2:519b6ae198ae 81 (
hudakz 2:519b6ae198ae 82 echoHeader,
hudakz 2:519b6ae198ae 83 "HTTP/1.1 200 OK\r\nContent-Length: %d\r\nContent-Type: text\r\nConnection: About to close\r\n\r\n",
hudakz 2:519b6ae198ae 84 size
hudakz 2:519b6ae198ae 85 );
hudakz 2:519b6ae198ae 86 client.write((uint8_t*)echoHeader, strlen(echoHeader));
hudakz 0:8b40576553d2 87 client.write((uint8_t*)buf, size);
hudakz 4:06fcbe983e24 88 pc.printf("Echo done.\r\n");
hudakz 0:8b40576553d2 89 }
hudakz 0:8b40576553d2 90 free(buf);
hudakz 0:8b40576553d2 91 }
hudakz 0:8b40576553d2 92 }
hudakz 0:8b40576553d2 93 }
hudakz 0:8b40576553d2 94 }