Hi! I've been trying to use wifinina to create a website that files can be sent to arduino. Basically I want to only print the information from the file into the serial moniter.
this is the code:
#include <WiFiNINA.h>
///////please enter your sensitive data in the Secret tab/arduino_secrets.h
char ssid[] = "xxxxxxx"; // your network SSID (name)
char pass[] = "xxxxxxx"; // your network password (use for WPA, or use as key for WEP)
int keyIndex = 0; // your network key index number (needed only for WEP)
int status = WL_IDLE_STATUS;
WiFiServer server(80);
void setup() {
Serial.begin(9600); // initialize serial communication
pinMode(9, OUTPUT); // set the LED pin mode
// check for the WiFi module:
if (WiFi.status() == WL_NO_MODULE) {
Serial.println("Communication with WiFi module failed!");
// don't continue
while (true)
;
}
String fv = WiFi.firmwareVersion();
if (fv < WIFI_FIRMWARE_LATEST_VERSION) {
Serial.println("Please upgrade the firmware");
}
// attempt to connect to WiFi network:
while (status != WL_CONNECTED) {
Serial.print("Attempting to connect to Network named: ");
Serial.println(ssid); // print the network name (SSID);*/
// Connect to WPA/WPA2 network. Change this line if using open or WEP network:
status = WiFi.begin(ssid, pass);
// wait 10 seconds for connection:
//delay(1000);
}
server.begin(); // start the web server on port 80
printWifiStatus(); // you're connected now, so print out the status
}
void loop() {
WiFiClient client = server.available(); // listen for incoming clients
if (client) { // if you get a client,
//Serial.println("new client"); // print a message out the serial port
String currentLine = ""; // make a String to hold incoming data from the client
while (client.connected()) { // loop while the client's connected
if (client.available()) { // if there's bytes to read from the client,
char c = client.read(); // read a byte, then
//Serial.write(c); // print it out to the serial monitor
if (c == '\n') { // if the byte is a newline character
// if the current line is blank, you got two newline characters in a row.
// that's the end of the client HTTP request, so send a response:
if (currentLine.length() == 0) {
// HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)
// and a content-type so the client knows what's coming, then a blank line:
client.println("HTTP/1.1 200 OK");
client.println("Content-type:text/html");
client.println();
// the content of the HTTP response follows the header:
client.print("Click <a href=\"/H\">here</a> turn the LED on pin 9 on<br>");
client.print("Click <a href=\"/L\">here</a> turn the LED on pin 9 off<br>");
client.print("<form method='POST' action='/update' enctype='multipart/form-data'><input type='file' name='update'><input type='submit' value='Update'></form>");
// The HTTP response ends with another blank line:
client.println();
// break out of the while loop:
break;
} else { // if you got a newline, then clear currentLine:
currentLine = "";
}
} else if (c != '\r') { // if you got anything else but a carriage return character,
currentLine += c; // add it to the end of the currentLine
}
// Check to see if the client request was "GET /H" or "GET /L":
if (currentLine.endsWith("GET /H")) {
digitalWrite(LED_BUILTIN, HIGH); // GET /H turns the LED on
}
if (currentLine.endsWith("GET /L")) {
digitalWrite(LED_BUILTIN, LOW); // GET /L turns the LED off
}
if (currentLine.endsWith("POST /update")) {
while (client.available()) {
char n = client.read();
Serial.write(n);
}
}
}
}
}
// close the connection:
client.stop();
//Serial.println("client disconnected");
}
}
void printWifiStatus() {
// print the SSID of the network you're attached to:
Serial.print("SSID: ");
Serial.println(WiFi.SSID());
// print your board's IP address:
IPAddress ip = WiFi.localIP();
Serial.print("IP Address: ");
Serial.println(ip);
// print the received signal strength:
long rssi = WiFi.RSSI();
Serial.print("signal strength (RSSI):");
Serial.print(rssi);
Serial.println(" dBm");
// print where to go in a browser:
Serial.print("To see this page in action, open a browser to http://");
Serial.println(ip);
}
That will print this when I upload a txt file with the word "test" in it:
IP Address: 192.168.1.161
signal strength (RSSI):-68 dBm
To see this page in action, open a browser to http://192.168.1.161
HTTP/1.1
Host: 192.168.1.161
Origin: http://192.168.1.161
Content-Type: multipart/form-data; boundary=----WebKitFormBoundarycmZUsToBlfO5TBiP
Accept-Encoding: gzip, deflate
Connection: keep-alive
Upgrade-Insecure-Requests: 1
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.5 Safari/605.1.15
Referer: http://192.168.1.161/
Content-Length: 188
Accept-Language: en-GB,en;q=0.9
------WebKitFormBoundarycmZUsToBlfO5TBiP
Content-Disposition: form-data; name="update"; filename="test.txt"
Content-Type: text/plain
test
------WebKitFormBoundarycmZUsToBlfO5TBiP--
I want the arduino to only print what is in the file, in this case the word test. But I do NOT want the arduino to store the hole string, since if I uploaded a video file that would be too big, and not a string, it should just read a byte from the file and print it.
Thanks for any help!
(Tell me if something is unclear)