I am trying to use the ethershield with SD - at the example [http://www.ladyada.net/learn/arduino/ethfiles.html] there is a reference to disable the W5100 chip:
pinMode(10, OUTPUT); // set the SS pin as an output (necessary!)
digitalWrite(10, HIGH); // but turn off the W5100 chip!
uint8_t r = card.init(SPI_HALF_SPEED, 4); // Use digital 4 as the SD SS line
I compile it and the [ethernet.h] needs the SPI.h - I put it at the begin of the scket and the compilation passes without error.
I did these changes, but what I must do to enable it again, and where ?, because when I try to access the IP address configured It does not work.
Arduino + Ethershield + SD
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Re: Arduino + Ethershield + SD
set pin 10 low and pin 4 high
- lourivalpedrosa
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Re: Arduino + Ethershield + SD
Ok - thanks - works fine....
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Re: Arduino + Ethershield + SD
Please, where should I insert your advice:
SD card init is OK, program lists what is on the card. So it is all right. But if I type IP address into browser, I see only blank page (it should not be, because "index.htm" contains some html code).
I tried command "ping" to appropriate address (make sure that the server works), but I got answer. So server works.
SD Card contains only: index.htm and pic.jpg
If anyone knows of what could be a problem, please advise me.
Thanks, George.
If I have code for arduino+eth+sd card:adafruit wrote:set pin 10 low and pin 4 high
Code: Select all
#include <SPI.h>
#include <SdFat.h>
#include <SdFatUtil.h>
#include <Ethernet.h>
/************ ETHERNET STUFF ************/
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
byte ip[] = { 192, 168, 1, 177 };
char rootFileName[] = "index.htm";
Server server(80);
/************ SDCARD STUFF ************/
Sd2Card card;
SdVolume volume;
SdFile root;
SdFile file;
// store error strings in flash to save RAM
#define error(s) error_P(PSTR(s))
void error_P(const char* str) {
PgmPrint("error: ");
SerialPrintln_P(str);
if (card.errorCode()) {
PgmPrint("SD error: ");
Serial.print(card.errorCode(), HEX);
Serial.print(',');
Serial.println(card.errorData(), HEX);
}
while(1);
}
void setup() {
Serial.begin(115200);
PgmPrint("Free RAM: ");
Serial.println(FreeRam());
// initialize the SD card at SPI_HALF_SPEED to avoid bus errors with
// breadboards. use SPI_FULL_SPEED for better performance.
pinMode(10, OUTPUT); // set the SS pin as an output (necessary!)
digitalWrite(10, HIGH); // but turn off the W5100 chip!
if (!card.init(SPI_HALF_SPEED, 4)) error("card.init failed!");
// initialize a FAT volume
if (!volume.init(&card)) error("vol.init failed!");
PgmPrint("Volume is FAT");
Serial.println(volume.fatType(),DEC);
Serial.println();
if (!root.openRoot(&volume)) error("openRoot failed");
// list file in root with date and size
PgmPrintln("Files found in root:");
root.ls(LS_DATE | LS_SIZE);
Serial.println();
// Recursive list of all directories
PgmPrintln("Files found in all dirs:");
root.ls(LS_R);
Serial.println();
PgmPrintln("Done");
// Debugging complete, we start the server!
Ethernet.begin(mac, ip);
server.begin();
}
// How big our line buffer should be. 100 is plenty!
#define BUFSIZ 100
void loop()
{
char clientline[BUFSIZ];
char *filename;
int index = 0;
int image = 0;
Client client = server.available();
if (client) {
// an http request ends with a blank line
boolean current_line_is_blank = true;
// reset the input buffer
index = 0;
while (client.connected()) {
if (client.available()) {
char c = client.read();
// If it isn't a new line, add the character to the buffer
if (c != '\n' && c != '\r') {
clientline[index] = c;
index++;
// are we too big for the buffer? start tossing out data
if (index >= BUFSIZ)
index = BUFSIZ -1;
// continue to read more data!
continue;
}
// got a \n or \r new line, which means the string is done
clientline[index] = 0;
filename = 0;
// Print it out for debugging
Serial.println(clientline);
// Look for substring such as a request to get the root file
if (strstr(clientline, "GET / ") != 0) {
filename = rootFileName;
}
if (strstr(clientline, "GET /") != 0) {
// this time no space after the /, so a sub-file
if (!filename) filename = clientline + 5; // look after the "GET /" (5 chars)
// a little trick, look for the " HTTP/1.1" string and
// turn the first character of the substring into a 0 to clear it out.
(strstr(clientline, " HTTP"))[0] = 0;
// print the file we want
Serial.println(filename);
if (! file.open(&root, filename, O_READ)) {
client.println("HTTP/1.1 404 Not Found");
client.println("Content-Type: text/html");
client.println();
client.println("<h2>File Not Found!</h2>");
break;
}
Serial.println("Opened!");
client.println("HTTP/1.1 200 OK");
if (strstr(filename, ".htm") != 0)
client.println("Content-Type: text/html");
else if (strstr(filename, ".css") != 0)
client.println("Content-Type: text/css");
else if (strstr(filename, ".png") != 0)
client.println("Content-Type: image/png");
else if (strstr(filename, ".jpg") != 0)
client.println("Content-Type: image/jpeg");
else if (strstr(filename, ".gif") != 0)
client.println("Content-Type: image/gif");
else if (strstr(filename, ".3gp") != 0)
client.println("Content-Type: video/mpeg");
else if (strstr(filename, ".pdf") != 0)
client.println("Content-Type: application/pdf");
else if (strstr(filename, ".js") != 0)
client.println("Content-Type: application/x-javascript");
else if (strstr(filename, ".xml") != 0)
client.println("Content-Type: application/xml");
else
client.println("Content-Type: text");
client.println();
int16_t c;
while ((c = file.read()) >= 0) {
// uncomment the serial to debug (slow!)
//Serial.print((char)c);
client.print((char)c);
}
file.close();
} else {
// everything else is a 404
client.println("HTTP/1.1 404 Not Found");
client.println("Content-Type: text/html");
client.println();
client.println("<h2>File Not Found!</h2>");
}
break;
}
}
// give the web browser time to receive the data
delay(1);
client.stop();
}
}
I tried command "ping" to appropriate address (make sure that the server works), but I got answer. So server works.
SD Card contains only: index.htm and pic.jpg
If anyone knows of what could be a problem, please advise me.
Thanks, George.
-
- Posts: 12151
- Joined: Thu Apr 06, 2006 4:21 pm
Re: Arduino + Ethershield + SD
are you using the example code exactly as in the tutorial?
Please be positive and constructive with your questions and comments.