Esp32 with FreeRTOS - Wifi AP
C FreeRTOS Arduino xTaskCreatePinnedToCore
Table of contents
File FreeRTOS_Esp32_wifi_AP.ino
void setup() {
Serial.begin(115200);
WiFi.mode(WIFI_AP);
if( WiFi.softAP(ssid, password) ) {
Serial.println("softAP Ready");
} else {
Serial.println("softAP Failed");
}
delay(1000);
if( WiFi.softAPConfig(local_IP,gateway,subnet)) {
Serial.println("softAPConfig Ready");
} else {
Serial.println("softAPConfig Failed");
}
IPAddress myIP = WiFi.softAPIP();
Serial.print("SSID: ");
Serial.println(ssid);
Serial.print("Passworkd: ");
Serial.println(password);
Serial.print("AP IP address: ");
Serial.println(myIP);
server.begin();
}
void loop() {
WiFiClient client = server.available(); // Listen for incoming clients
if (client) { // If a new client connects,
Serial.println("New Client."); // print a message out in 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 the serial monitor
header += c;
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("Connection: close");
client.println();
// turns the GPIOs on and off
if (header.indexOf("GET /26/on") >= 0) {
Serial.println("GPIO 26 on");
output26State = "on";
digitalWrite(output26, HIGH);
} else if (header.indexOf("GET /26/off") >= 0) {
Serial.println("GPIO 26 off");
output26State = "off";
digitalWrite(output26, LOW);
} else if (header.indexOf("GET /27/on") >= 0) {
Serial.println("GPIO 27 on");
output27State = "on";
digitalWrite(output27, HIGH);
} else if (header.indexOf("GET /27/off") >= 0) {
Serial.println("GPIO 27 off");
output27State = "off";
digitalWrite(output27, LOW);
}
// Display the HTML web page
client.println("<!DOCTYPE html><html>");
client.println("<head><meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">");
client.println("<link rel=\"icon\" href=\"data:,\">");
// CSS to style the on/off buttons
// Feel free to change the background-color and font-size attributes to fit your preferences
client.println("<style>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}");
client.println(".button { background-color: #4CAF50; border: none; color: white; padding: 16px 40px;");
client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;}");
client.println(".button2 {background-color: #555555;}</style></head>");
// Web Page Heading
client.println("<body><h1>ESP32 Web Server</h1>");
// Display current state, and ON/OFF buttons for GPIO 26
client.println("<p>GPIO 26 - State " + output26State + "</p>");
// If the output26State is off, it displays the ON button
if (output26State=="off") {
client.println("<p><a href=\"/26/on\"><button class=\"button\">ON</button></a></p>");
} else {
client.println("<p><a href=\"/26/off\"><button class=\"button button2\">OFF</button></a></p>");
}
// Display current state, and ON/OFF buttons for GPIO 27
client.println("<p>GPIO 27 - State " + output27State + "</p>");
// If the output27State is off, it displays the ON button
if (output27State=="off") {
client.println("<p><a href=\"/27/on\"><button class=\"button\">ON</button></a></p>");
} else {
client.println("<p><a href=\"/27/off\"><button class=\"button button2\">OFF</button></a></p>");
}
client.println("</body></html>");
// 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
}
}
}
// Clear the header variable
header = "";
// Close the connection
client.stop();
Serial.println("Client disconnected.");
Serial.println("");
}
}
Compiling the project
# ESP32-WROOM-DA Module esp32:esp32:esp32da
# ESP32S3 Dev Module Octal (WROOM2) esp32:esp32:esp32s3-octal
# Fri3d Badge 2024 (ESP32-S3-WROOM-1) esp32:esp32:fri3d_2024_esp32s3
# uPesy ESP32 Wroom DevKit esp32:esp32:uPesy_wroom
# LilyGo T-Display esp32:esp32:lilygo_t_display
# LilyGo T-Display-S3 esp32:esp32:lilygo_t_display_s3
# LilyGo T-ETH-Lite esp32:esp32:lilygo_t_eth_lite
# LilyGo T-Watch-S3 esp32:esp32:twatchs3
# LilyGo T-Watch-Ultra esp32:esp32:twatch_ultra
# LilyGo T3-S3 esp32:esp32:lilygo_t3s3
# LilyGo-T-LoRa-Pager esp32:esp32:tlora_pager
BOARD?= esp32:esp32:esp32da
PORT?= /dev/ttyUSB0
BAUD?= 115200
PROJECT_NAME?= FreeRTOS_Esp32_blink
all:
$(Q)echo "Compiling $(PROJECT_NAME)..."
$(Q)mkdir -p out
$(Q)arduino-cli compile \
--clean \
--fqbn $(BOARD) \
--output-dir out \
$(PROJECT_NAME).ino
$(MAKE) til
$(MAKE) til_copy
clean:
$(RM) -r out
$(RM) -r til
Update config, toolchain, libraries
.PHONY: update
update:
$(Q)echo create config at /home/geraldo/.arduino15/arduino-cli.yaml
$(Q)arduino-cli config init || echo Config file already exists
$(Q)arduino-cli config set network.connection_timeout 600s
$(Q)cat /home/geraldo/.arduino15/arduino-cli.yaml
$(Q)arduino-cli core update-index
$(Q)arduino-cli core install arduino:avr
$(Q)arduino-cli core install esp32:esp32
$(Q)arduino-cli upgrade
Upload binary to the board
.PHONY: upload
upload:
$(Q)arduino-cli upload \
$(shell pwd) \
--input-dir out/ \
--port $(PORT) \
--fqbn $(BOARD) \
--verbose \
--verify
Open serial monitor in another terminal
.PHONY: serial
serial10:
$(Q)xfce4-terminal -x picocom $(PORT) \
--baud $(BAUD) \
--echo \
--exit-after 10000
serial:
$(Q)xfce4-terminal -x picocom $(PORT) \
--baud $(BAUD) \
--echo \