WIZnet / Mbed 2 deprecated HTTP_SDCard_File_Server_WIZwiki-W7500 Featured

HTTP SD Card File Server

Dependencies:   SDFileSystem WIZnetInterface mbed

Fork of HTTP_SD_Server_K64F by FRDM-K64F Code Share

Prerequisite

This Program is the example how to show SD card file list with web-browser for WIZwiki-W7500.

To implement this function, you need a Platform board, network Interface board and SD card. Below are what we used.

  • WIZwiki-W7500 from WIZnet (Platform board and Ethernet I/F board)
  • SD card

Hardware Configuration

WIZwiki-W7500 Pin map

pin map

Software

SPI Initialization

main.cpp

SDFileSystem sd(PB_3, PB_2, PB_1, PB_0, "sd");

Refer to ....

main.cpp

Committer:
MidnightCow
Date:
2015-07-30
Revision:
9:d0615c97295e
Parent:
8:4b43259a1e33

File content as of revision 9:d0615c97295e:

#include "mbed.h"
#include "EthernetInterface.h"
#include "SDFileSystem.h"
#include <stdio.h>
#include <string.h>


#define MAC     "\x00\x08\xDC\x11\x34\x78"
#define IP      "192.168.77.100"
#define MASK    "255.255.255.0"
#define GATEWAY "192.168.77.1"

#define HTTPD_SERVER_PORT   80
#define HTTPD_MAX_REQ_LENGTH   1023
#define HTTPD_MAX_HDR_LENGTH   255
#define HTTPD_MAX_FNAME_LENGTH   127
#define HTTPD_MAX_DNAME_LENGTH   127

Serial uart(USBTX, USBRX);

//SDFileSystem sd(p5, p6, p7, p8, "sd"); // LPC1768 MBD2PMD
//SDFileSystem sd(P0_18, P0_17, P0_15, P0_16, "sd"); // Seeeduino Arch Pro SPI2SD
//SDFileSystem sd(PTE3, PTE1, PTE2, PTE4, "sd"); // K64F
SDFileSystem sd(PB_3, PB_2, PB_1, PB_0, "sd"); // WIZwiki-W7500 

EthernetInterface eth;
TCPSocketServer server;
TCPSocketConnection client;

char buffer[HTTPD_MAX_REQ_LENGTH+1];
char httpHeader[HTTPD_MAX_HDR_LENGTH+1];
char fileName[HTTPD_MAX_FNAME_LENGTH+1];
char dirName[HTTPD_MAX_DNAME_LENGTH+1];
char *uristr;
char *eou;
char *qrystr;

FILE *fp;
int rdCnt;

DigitalOut led1(LED1); //server listning status
DigitalOut led2(LED2); //socket connecting status

Ticker ledTick;

void ledTickfunc()
{
    led1 = !led1;
}



void get_file(char* uri)
{
    uart.printf("get_file %s\n", uri);
    char *lstchr = strrchr(uri, NULL) -1;
    if ('/' == *lstchr) {
        uart.printf("Open directory /sd%s\n", uri);
        *lstchr = 0;
        sprintf(fileName, "/sd%s", uri);
        DIR *d = opendir(fileName);
        if (d != NULL) {
            sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n");
            client.send(httpHeader,strlen(httpHeader));
            sprintf(httpHeader,"<html><head><title>Directory Listing</title></head><body><h1>%s Directory Listing</h1><ul>", uri);
            client.send(httpHeader,strlen(httpHeader));
            struct dirent *p;
            while((p = readdir(d)) != NULL) {
                sprintf(dirName, "%s/%s", fileName, p->d_name);
                uart.printf("%s\n", dirName);
                DIR *subDir = opendir(dirName);
                if (subDir != NULL) {
                    sprintf(httpHeader,"<li><a href=\"./%s/\">%s/</a></li>", p->d_name, p->d_name);
                } else {
                    sprintf(httpHeader,"<li><a href=\"./%s\">%s</a></li>", p->d_name, p->d_name);
                }
                client.send(httpHeader,strlen(httpHeader));
            }
        }
        closedir(d);
        uart.printf("Directory closed\n");
        sprintf(httpHeader,"</ul></body></html>");
        client.send(httpHeader,strlen(httpHeader));
    } else {
        sprintf(fileName, "/sd%s", uri);
        fp = fopen(fileName, "r");
        if (fp == NULL) {
            uart.printf("File not found\n");
            sprintf(httpHeader,"HTTP/1.1 404 Not Found \r\nContent-Type: text\r\nConnection: Close\r\n\r\n");
            client.send(httpHeader,strlen(httpHeader));
            client.send(uri,strlen(uri));
        } else {
            uart.printf("Sending: header");
            sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n");
            client.send(httpHeader,strlen(httpHeader));
            uart.printf(" file");
            while ((rdCnt = fread(buffer, sizeof( char ), 1024, fp)) == 1024) {
                client.send(buffer, rdCnt);
                uart.printf(".");
            }
            client.send(buffer, rdCnt);
            fclose(fp);
            uart.printf("done\n");
        }
    }
}

int main (void)
{
    ledTick.attach(&ledTickfunc,0.5);
//    Serial Interface eth;
    uart.baud(115200);
    uart.printf("Initializing\n");

//    Check File System
    uart.printf("Checking File System\n");
    DIR *d = opendir("/sd/");
    if (d != NULL) {
        uart.printf("SD Card Present\n");
    } else {
        uart.printf("SD Card Root Directory Not Found\n");
    }

//    EthernetInterface eth;
    uart.printf("Initializing Ethernet\n");
    //eth.init(); //Use DHCP
    //eth.init((uint8_t*)MAC);    // Use DHCP for WIZnetInterface
    eth.init((uint8_t*)MAC,IP,MASK,GATEWAY);  //IP,mask,Gateway
    uart.printf("Connecting\n");
    eth.connect();
    uart.printf("IP Address is %s\n", eth.getIPAddress());

//    TCPSocketServer server;
    server.bind(HTTPD_SERVER_PORT);
    server.listen();
    uart.printf("Server Listening\n");

    while (true) {
        uart.printf("\nWait for new connection...\r\n");
        server.accept(client);
        client.set_blocking(false, 1500); // Timeout after (1.5)s

        uart.printf("Connection from: %s\r\n", client.get_address());
        while (true) {
            led2 = true;
            int n = client.receive(buffer, sizeof(buffer));
            if (n <= 0) break;
            uart.printf("Recieved Data: %d\r\n\r\n%.*s\r\n",n,n,buffer);
            if (n >= 1024) {
                sprintf(httpHeader,"HTTP/1.1 413 Request Entity Too Large \r\nContent-Type: text\r\nConnection: Close\r\n\r\n");
                client.send(httpHeader,strlen(httpHeader));
                client.send(buffer,n);
                break;
            } else {
                buffer[n]=0;
            }
            if (!strncmp(buffer, "GET ", 4)) {
                uristr = buffer + 4;
                eou = strstr(uristr, " ");
                if (eou == NULL) {
                    sprintf(httpHeader,"HTTP/1.1 400 Bad Request \r\nContent-Type: text\r\nConnection: Close\r\n\r\n");
                    client.send(httpHeader,strlen(httpHeader));
                    client.send(buffer,n);
                } else {
                    *eou = 0;
                    get_file(uristr);
                }
            }
        }
        led2 = false;
        client.close();
    }
}