Hello,
I am building a fan controller script using an Arduino Uno WiFi Rev2 but I always an error regarding a missing Base64 library not being included in ArduinoHttpServer:
StreamHttpRequest.hpp:403:30: error: 'Base64' was not declared in this scope
This happens on both the Web editor and the regular Arduino IDE. I've already tried manually including Base64 in the top of my script.
This is my script:
// ArduinoHttpServer - Version: Latest
#include <ArduinoHttpServer.h>
// #include <Arduino.h>
#include <SPI.h>
#include <WiFi.h>
const char* ssid = "MYWIFI";
const char* password = "PASSWORD";
// UTIL FUNCTIONS
String wrapInQoutes(String input) {
return "\"" + input + "\"";
}
String boolToString(boolean b) {
if (b) {
return "true";
} else {
return "false";
}
}
struct fan {
int pin;
String name = "";
int speed = 0;
boolean clockwiseRotation = true;
};
struct fan fans[4];
void makeFans() {
fans[0].pin = 3;
fans[0].name = "ROOM 1";
fans[1].pin = 5;
fans[1].name = "ROOM 2";
fans[2].pin = 6;
fans[2].name = "ROOM 3";
fans[3].pin = 9;
fans[3].name = "ROOM 4";
}
void setupPins() {
pinMode(3, OUTPUT);
pinMode(5, OUTPUT);
pinMode(6, OUTPUT);
pinMode(9, OUTPUT);
analogWrite(3, 127);
analogWrite(5, 127);
analogWrite(6, 127);
analogWrite(9, 127);
}
String makeJSONForFan(struct fan *f) {
Serial.println("makeJSONForFan");
Serial.println("Making JSON for fan " + f->name);
String output = "";
output += "{ ";
output += wrapInQoutes("pin");
output += ": ";
output += f->pin;
output += ", ";
output += wrapInQoutes("name");
output += ": ";
output += wrapInQoutes(f->name);
output += ", ";
output += wrapInQoutes("speed");
output += ": ";
output += f->speed;
output += ", ";
output += wrapInQoutes("clockwiseRotation");
output += ": ";
output += boolToString(f->clockwiseRotation);
output += " }";
return output;
}
WiFiServer wifiServer(80);
void setup()
{
setupPins();
delay(1000);
Serial.begin(9600);
makeFans();
Serial.println("Starting Wifi Connection…");
WiFi.begin(const_cast<char*>(ssid), password);
while (WiFi.status() != WL_CONNECTED)
{
delay(1000);
Serial.println("Connecting...");
}
printWifiStatus();
wifiServer.begin();
}
void(* reset) (void) = 0;
void printWifiStatus() {
// print the SSID of the network you're attached to:
Serial.print("SSID: ");
Serial.println(WiFi.SSID());
// print your WiFi shield'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");
}
void updateFan(struct fan f) {
// PWM from 0-255, 0-126 clockwise, 128-255 counter-clockwise
// speed should be 0-100
double calc = f.speed * 127 / 100 * (f.clockwiseRotation * 2 - 1) + 127;
int c = calc;
Serial.println("Setting PWM of fan " + f.name + " on PIN " + f.pin + " to " + c);
analogWrite(f.pin, c);
}
void loop()
{
if (WiFi.status() != WL_CONNECTED) {
reset();
}
WiFiClient client( wifiServer.available() );
if (client.connected())
{
// Connected to client. Allocate and initialize StreamHttpRequest object.
ArduinoHttpServer::StreamHttpRequest<1023> httpRequest(client);
// Parse the request.
if (httpRequest.readRequest())
{
// Use the information you like they way you like.
// Retrieve HTTP resource / URL requested
Serial.println( httpRequest.getResource().toString());
// Retrieve HTTP method.
// E.g.: GET / PUT / HEAD / DELETE / POST
ArduinoHttpServer::Method method( ArduinoHttpServer::Method::Invalid );
method = httpRequest.getMethod();
if ( method == ArduinoHttpServer::Method::Get )
{
if (httpRequest.getResource()[0] == "fans") {
// /fans
// check if root
if (httpRequest.getResource().toString() == "/fans") {
Serial.println("List all fans");
// List all fans
ArduinoHttpServer::StreamHttpReply httpReply(client, "application/json");
String allFansJSON = "[";
allFansJSON += makeJSONForFan(&fans[0]);
allFansJSON += ", ";
allFansJSON += makeJSONForFan(&fans[1]);
allFansJSON += ", ";
allFansJSON += makeJSONForFan(&fans[2]);
allFansJSON += ", ";
allFansJSON += makeJSONForFan(&fans[3]);
allFansJSON += "]";
httpReply.send(allFansJSON);
} else {
// /fans/[0-3]
String fanIDString = httpRequest.getResource()[1];
int fanID = fanIDString.toInt();
if (fanID > -1 && fanID < 4) {
// /fans/[0-3]/speed/[0-100]
if (httpRequest.getResource()[2] == "speed") {
// set fan speed
String speedString = httpRequest.getResource()[3];
int newSpeed = speedString.toInt();
fans[fanID].speed = newSpeed;
updateFan(fans[fanID]);
} else if (httpRequest.getResource()[2] == "direction") {
// /fans/[0-3]/direction
// set fan direction
if (httpRequest.getResource()[3] == "clockwise") {
// set fan direction clockwise
fans[fanID].clockwiseRotation = true;
updateFan(fans[fanID]);
} else if (httpRequest.getResource()[3] == "counter-clockwise") {
// set fan direction counter-clockwise
fans[fanID].clockwiseRotation = false;
updateFan(fans[fanID]);
}
}
ArduinoHttpServer::StreamHttpReply httpReply(client, "application/json");
httpReply.send(makeJSONForFan(&fans[fanID]));
}
}
}
}
}
else
{
// HTTP parsing failed. Client did not provide correct HTTP data or
// client requested an unsupported feature.
ArduinoHttpServer::StreamHttpErrorReply httpReply(client, httpRequest.getContentType());
httpReply.send("");
}
}
}
I assume this is an issue in the ArduinoHttpServer since the error mentions Base64 not being included inside it.
