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Working http server with sdcard

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This commit is contained in:
Aurélie Delhaie
2021-11-18 23:12:08 +01:00
parent 6ab5db4759
commit bad8b6ce25
1 changed files with 44 additions and 29 deletions
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73
arduino/main/main.ino
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@@ -1,12 +1,12 @@
#include <SPI.h> #include <SPI.h>
#include <Ethernet.h> #include <Ethernet.h>
#include <SD.h> #include <SdFat.h>
#include <String.h> #include <String.h>
byte mac[] = { byte mac[] = {
0xA8, 0x61, 0x0A, 0xAE, 0x6F, 0x4A 0xA8, 0x61, 0x0A, 0xAE, 0x6F, 0x4A
}; };
SdFat SD;
EthernetServer server(80); EthernetServer server(80);
void setup() { void setup() {
@@ -17,15 +17,17 @@ void setup() {
} }
Serial.println("Arduino Ethernet WebServer"); Serial.println("Arduino Ethernet WebServer");
Serial.print("Initializing SD card..."); Serial.print("Starting SD...");
if (!SD.begin(4)) { if (!SD.begin(4)) {
Serial.println("initialization failed!"); Serial.println("failed");
while (true) { while (true) {
delay(1); delay(15);
} }
} }
else Serial.println("ok");
Serial.println("Initialize Ethernet with DHCP:"); Serial.println("Initialize Ethernet with DHCP:");
if (Ethernet.begin(mac) == 0) { if (Ethernet.begin(mac) == 0) {
Serial.println("Failed to configure Ethernet using DHCP"); Serial.println("Failed to configure Ethernet using DHCP");
if (Ethernet.hardwareStatus() == EthernetNoHardware) { if (Ethernet.hardwareStatus() == EthernetNoHardware) {
@@ -34,7 +36,7 @@ void setup() {
Serial.println("Ethernet cable is not connected."); Serial.println("Ethernet cable is not connected.");
} }
while (true) { while (true) {
delay(1); delay(15);
} }
} }
@@ -47,37 +49,50 @@ void setup() {
void loop() { void loop() {
EthernetClient client = server.available(); EthernetClient client = server.available();
if (client) { if (client) {
String res = client.readStringUntil('\n'); SdFile file;
int str_len = res.length() + 1; {
char char_array[str_len]; char* path;
res.toCharArray(char_array, str_len); {
char* method = strtok(char_array, " "); String res = client.readStringUntil(" HTTP/1.1");
char* path = strtok(0, " "); char char_array[res.length() + 1];
Serial.println(method); res.toCharArray(char_array, res.length() + 1);
Serial.println(path); strtok(char_array, " ");
if (client.available()) { path = strtok(0, " ");
if (method != "GET") { }
sendMethodNotAllowed(client); if (strcmp(path, "/") == 0) {
} else { path = "/index.html";
sendHeaders(client); }
Serial.println(path);
if (!file.open(path)) {
sendNotFound(client);
delay(15);
client.stop();
} }
} }
delay(15); {
client.stop(); char buf[25];
sendHeaders(client);
while (file.available())
{
file.read(buf, sizeof(buf));
client.write(buf, sizeof(buf));
}
delay(15);
client.stop();
}
} }
} }
void sendHeaders(EthernetClient client) { void sendHeaders(EthernetClient client) {
client.println("HTTP/1.1 200 OK"); client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html"); client.println("Cache-Control: max-age=31536000");
client.println("Connection: close"); // the connection will be closed after completion of the response client.println("Connection: close");
client.println(); client.println();
} }
void sendMethodNotAllowed(EthernetClient client) { void sendNotFound(EthernetClient client) {
client.println("HTTP/1.1 405 Method Not Allowed"); client.println("HTTP/1.1 404 Not Found");
client.println("Content-Type: text/html"); client.println("Content-Type: text/html");
client.println("Allow: GET");
client.println("Connection: close"); // the connection will be closed after completion of the response client.println("Connection: close"); // the connection will be closed after completion of the response
client.println(); client.println();
client.println("<!doctype html>"); client.println("<!doctype html>");
@@ -85,8 +100,8 @@ void sendMethodNotAllowed(EthernetClient client) {
client.println("<title>Arduino Dashboard</title>"); client.println("<title>Arduino Dashboard</title>");
client.println("</head>"); client.println("</head>");
client.println("<body>"); client.println("<body>");
client.println("<h1>405 Method Not Allowed</h1>"); client.println("<h1>404 Not Found</h1>");
client.println("<p>the method received in the request-line is known by the origin server but not supported by the target resource.</p>"); client.println("<p>The requested URL was not found on this server.</p>");
client.println("</body>"); client.println("</body>");
client.println("</html>"); client.println("</html>");
client.println(); client.println();