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Working example for WLAN led
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2 files changed

+116
-72
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‎example_ap/CMakeLists.txt‎

Lines changed: 4 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -18,9 +18,10 @@ set(${${PROJECT_NAME}_BOARD}.upload.speed 921600)
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# Select a specific flash frequence for the board
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set(${${PROJECT_NAME}_BOARD}.build.flash_freq 80m)
2020

21-
set(${PROJECT_NAME}_LIBS esp32 mbedtls wpa_supplicant)
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#set(${PROJECT_NAME}_ARDLIBS WiFi)
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#set(${PROJECT_NAME}_ARDLIBS_PATH ${ESP32_LIBRARIES_PATH})
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set(${PROJECT_NAME}_ARDLIBS WiFi)
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set(${PROJECT_NAME}_ARDLIBS_PATH ${ESP32_LIBRARIES_PATH})
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set(${PROJECT_NAME}_LIBS esp32 wpa_supplicant lwip)
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# Command to generate code arduino firmware (.hex file)
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generate_arduino_firmware(${PROJECT_NAME})

‎example_ap/wifi_ap.cpp‎

Lines changed: 112 additions & 69 deletions
Original file line numberDiff line numberDiff line change
@@ -1,83 +1,126 @@
1+
/*
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WiFi Web Server LED Blink
13
2-
#include "Arduino.h"
3-
#include <esp_wifi_types.h>
4-
//#include "freertos/FreeRTOS.h"
5-
#include "esp_wifi.h"
6-
#include "esp_system.h"
7-
#include "esp_event.h"
8-
#include "esp_event_loop.h"
9-
#include "nvs_flash.h"
10-
#include "driver/gpio.h"
11-
#include <string>
4+
A simple web server that lets you blink an LED via the web.
5+
This sketch will print the IP address of your WiFi Shield (once connected)
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to the Serial monitor. From there, you can open that address in a web browser
7+
to turn on and off the LED on pin 5.
128
9+
If the IP address of your shield is yourAddress:
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http://yourAddress/H turns the LED on
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http://yourAddress/L turns it off
1312
14-
#define LED_PIN 5
13+
This example is written for a network using WPA encryption. For
14+
WEP or WPA, change the Wifi.begin() call accordingly.
1515
16-
esp_err_t event_handler(void *ctx, system_event_t *event)
17-
{
18-
return ESP_OK;
19-
}
16+
Circuit:
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* WiFi shield attached
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* LED attached to pin 5
2019
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created for arduino 25 Nov 2012
21+
by Tom Igoe
2122
22-
void setup() {
23-
24-
25-
pinMode(LED_PIN, OUTPUT);
26-
digitalWrite(LED_PIN, LOW);
27-
28-
nvs_flash_init();
29-
tcpip_adapter_init();
30-
ESP_ERROR_CHECK( esp_event_loop_init(event_handler, NULL) );
31-
wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
32-
ESP_ERROR_CHECK( esp_wifi_init(&cfg) );
33-
ESP_ERROR_CHECK( esp_wifi_set_storage(WIFI_STORAGE_RAM) );
34-
ESP_ERROR_CHECK( esp_wifi_set_mode(WIFI_MODE_STA) );
35-
wifi_config_t sta_config;
36-
sta_config.ap.authmode = WIFI_AUTH_WPA2_PSK;
37-
sta_config.ap.channel = 0;
38-
39-
sta_config.ap.ssid[0] = 'E';
40-
sta_config.ap.ssid[1] = 'S';
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sta_config.ap.ssid[2] = 'P';
42-
sta_config.ap.ssid[3] = '3';
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sta_config.ap.ssid[4] = '2';
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sta_config.ap.ssid[5] = 'A';
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sta_config.ap.ssid[6] = 'P';
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sta_config.ap.ssid[7] = '0';
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sta_config.ap.ssid_len = 7;
48-
49-
sta_config.ap.password[0] = 'f';
50-
sta_config.ap.password[1] = 'o';
51-
sta_config.ap.password[2] = 'r';
52-
sta_config.ap.password[3] = 't';
53-
sta_config.ap.password[4] = 'i';
54-
sta_config.ap.password[5] = 's';
55-
sta_config.ap.password[6] = 's';
56-
sta_config.ap.password[7] = '1';
57-
sta_config.ap.password[8] = '2';
58-
sta_config.ap.password[9] = '3';
59-
sta_config.ap.password[10] = 0;
60-
61-
62-
sta_config.ap.ssid_hidden = 0;
63-
sta_config.ap.max_connection = 1;
64-
sta_config.ap.beacon_interval = 100;
65-
ESP_ERROR_CHECK( esp_wifi_set_config(WIFI_IF_STA, &sta_config) );
66-
ESP_ERROR_CHECK( esp_wifi_start() );
67-
ESP_ERROR_CHECK( esp_wifi_connect() );
68-
69-
gpio_set_direction(GPIO_NUM_13, GPIO_MODE_OUTPUT);
70-
}
23+
ported for sparkfun esp32
24+
31.01.2017 by Jan Hendrik Berlin
25+
26+
*/
27+
28+
#include "WiFi.h"
7129

72-
void loop() {
30+
const char* ssid = "your_ssid";
31+
const char* password = "your_pwd";
7332

74-
for (int i = 0; i < 2; i++) {
75-
digitalWrite(LED_PIN, HIGH);
33+
WiFiServer server(80);
34+
35+
void setup()
36+
{
37+
Serial.begin(115200);
38+
pinMode(5, OUTPUT); // set the LED pin mode
39+
for (int i = 0; i < 5; i++) {
40+
digitalWrite(5, HIGH);
7641
delay(1000);
77-
digitalWrite(LED_PIN, LOW);
42+
digitalWrite(5, LOW);
7843
delay(1000);
7944
}
8045

81-
//vTaskDelay(300 / portTICK_PERIOD_MS);
46+
// We start by connecting to a WiFi network
47+
48+
Serial.println();
49+
Serial.println();
50+
Serial.print("Connecting to ");
51+
Serial.println(ssid);
52+
53+
WiFi.begin(ssid, password);
8254

55+
while (WiFi.status() != WL_CONNECTED) {
56+
delay(500);
57+
Serial.print(".");
58+
}
59+
60+
Serial.println("");
61+
Serial.println("WiFi connected.");
62+
Serial.println("IP address: ");
63+
Serial.println(WiFi.localIP());
64+
65+
Serial.flush();
66+
67+
server.begin();
68+
69+
}
70+
71+
int value = 0;
72+
73+
void loop(){
74+
75+
76+
WiFiClient client = server.available(); // listen for incoming clients
77+
78+
79+
80+
if (client) { // if you get a client,
81+
Serial.println("New Client."); // print a message out the serial port
82+
String currentLine = ""; // make a String to hold incoming data from the client
83+
while (client.connected()) { // loop while the client's connected
84+
if (client.available()) { // if there's bytes to read from the client,
85+
char c = client.read(); // read a byte, then
86+
Serial.write(c); // print it out the serial monitor
87+
if (c == '\n') { // if the byte is a newline character
88+
89+
// if the current line is blank, you got two newline characters in a row.
90+
// that's the end of the client HTTP request, so send a response:
91+
if (currentLine.length() == 0) {
92+
// HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)
93+
// and a content-type so the client knows what's coming, then a blank line:
94+
client.println("HTTP/1.1 200 OK");
95+
client.println("Content-type:text/html");
96+
client.println();
97+
98+
// the content of the HTTP response follows the header:
99+
client.print("Click <a href=\"/H\">here</a> to turn the LED on pin 5 on.<br>");
100+
client.print("Click <a href=\"/L\">here</a> to turn the LED on pin 5 off.<br>");
101+
102+
// The HTTP response ends with another blank line:
103+
client.println();
104+
// break out of the while loop:
105+
break;
106+
} else { // if you got a newline, then clear currentLine:
107+
currentLine = "";
108+
}
109+
} else if (c != '\r') { // if you got anything else but a carriage return character,
110+
currentLine += c; // add it to the end of the currentLine
111+
}
112+
113+
// Check to see if the client request was "GET /H" or "GET /L":
114+
if (currentLine.endsWith("GET /H")) {
115+
digitalWrite(5, HIGH); // GET /H turns the LED on
116+
}
117+
if (currentLine.endsWith("GET /L")) {
118+
digitalWrite(5, LOW); // GET /L turns the LED off
119+
}
120+
}
121+
}
122+
// close the connection:
123+
client.stop();
124+
Serial.println("Client Disconnected.");
125+
}
83126
}

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