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AdvancedWebServer.ino
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AdvancedWebServer.ino
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/**************************************************************************************************************************************
AdvancedWebServer.ino - Simple Arduino web server sample for SAMD21 running WiFiNINA shield
For any WiFi shields, such as WiFiNINA W101, W102, W13x, or custom, such as ESP8266/ESP32-AT, Ethernet, etc
WiFiWebServer is a library for the ESP32-based WiFi shields to run WebServer
Forked and modified from ESP8266 https://github.com/esp8266/Arduino/releases
Forked and modified from Arduino WiFiNINA library https://www.arduino.cc/en/Reference/WiFiNINA
Built by Khoi Hoang https://github.com/khoih-prog/WiFiWebServer
Licensed under MIT license
Copyright (c) 2015, Majenko Technologies
All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this
list of conditions and the following disclaimer in the documentation and/or
other materials provided with the distribution.
Neither the name of Majenko Technologies nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
***************************************************************************************************************************************/
#include "defines.h"
int status = WL_IDLE_STATUS; // the Wifi radio's status
int reqCount = 0; // number of requests received
WiFiWebServer server(80);
#if defined(LED_BUILTIN)
const int led = LED_BUILTIN;
#else
#if (ESP32)
// Using pin 13 will crash ESP32_C3
const int led = 2;
#else
const int led = 13;
#endif
#endif
void handleRoot()
{
#define BUFFER_SIZE 512
digitalWrite(led, 1);
char temp[BUFFER_SIZE];
int sec = millis() / 1000;
int min = sec / 60;
int hr = min / 60;
int day = hr / 24;
hr = hr % 24;
snprintf(temp, BUFFER_SIZE - 1,
"<html>\
<head>\
<meta http-equiv='refresh' content='5'/>\
<title>%s</title>\
<style>\
body { background-color: #cccccc; font-family: Arial, Helvetica, Sans-Serif; Color: #000088; }\
</style>\
</head>\
<body>\
<h1>Hello from %s</h1>\
<h3>running WiFiWebServer</h3>\
<h3>on %s</h3>\
<p>Uptime: %d d %02d:%02d:%02d</p>\
<img src=\"/test.svg\" />\
</body>\
</html>", BOARD_NAME, BOARD_NAME, SHIELD_TYPE, day, hr, min % 60, sec % 60);
server.send(200, F("text/html"), temp);
digitalWrite(led, 0);
}
void handleNotFound()
{
digitalWrite(led, 1);
String message = F("File Not Found\n\n");
message += F("URI: ");
message += server.uri();
message += F("\nMethod: ");
message += (server.method() == HTTP_GET) ? F("GET") : F("POST");
message += F("\nArguments: ");
message += server.args();
message += F("\n");
for (uint8_t i = 0; i < server.args(); i++)
{
message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
}
server.send(404, F("text/plain"), message);
digitalWrite(led, 0);
}
#define ORIGINAL_STR_LEN (2048 * MULTIPLY_FACTOR)
//String out;
void drawGraph()
{
static String out;
static uint16_t previousStrLen = ORIGINAL_STR_LEN;
if (out.length() == 0)
{
WS_LOGWARN1(F("String Len = 0, extend to"), ORIGINAL_STR_LEN);
out.reserve(ORIGINAL_STR_LEN);
}
#if (MULTIPLY_FACTOR == 1)
out = F( "<svg xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\" width=\"310\" height=\"150\">\n" \
"<rect width=\"310\" height=\"150\" fill=\"rgb(250, 230, 210)\" stroke-width=\"3\" stroke=\"rgb(0, 0, 0)\" />\n" \
"<g stroke=\"blue\">\n");
#elif (MULTIPLY_FACTOR == 2)
out = F( "<svg xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\" width=\"610\" height=\"150\">\n" \
"<rect width=\"610\" height=\"150\" fill=\"rgb(250, 230, 210)\" stroke-width=\"3\" stroke=\"rgb(0, 0, 0)\" />\n" \
"<g stroke=\"blue\">\n");
#elif (MULTIPLY_FACTOR == 4)
out = F( "<svg xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\" width=\"1210\" height=\"150\">\n" \
"<rect width=\"1210\" height=\"150\" fill=\"rgb(250, 230, 210)\" stroke-width=\"3\" stroke=\"rgb(0, 0, 0)\" />\n" \
"<g stroke=\"blue\">\n");
#endif
char temp[70];
int y = rand() % 130;
for (int x = 10; x < (300 * MULTIPLY_FACTOR); x += 10)
{
int y2 = rand() % 130;
sprintf(temp, "<line x1=\"%d\" y1=\"%d\" x2=\"%d\" y2=\"%d\" stroke-width=\"2\" />\n", x, 140 - y, x + 10, 140 - y2);
out += temp;
y = y2;
}
out += F("</g>\n</svg>\n");
WS_LOGDEBUG1(F("String Len = "), out.length());
if (out.length() > previousStrLen)
{
WS_LOGERROR3(F("String Len > "), previousStrLen, F(", extend to"), out.length() + 48);
previousStrLen = out.length() + 48;
out.reserve(previousStrLen);
}
else
{
server.send(200, "image/svg+xml", out);
}
}
void setup()
{
//out.reserve(ORIGINAL_STR_LEN);
pinMode(led, OUTPUT);
digitalWrite(led, 0);
Serial.begin(115200);
while (!Serial && millis() < 5000);
delay(200);
Serial.print(F("\nStarting AdvancedWebServer on "));
Serial.print(BOARD_NAME);
Serial.print(F(" with "));
Serial.println(SHIELD_TYPE);
Serial.println(WIFI_WEBSERVER_VERSION);
#if WIFI_USING_ESP_AT
// initialize serial for ESP module
EspSerial.begin(115200);
// initialize ESP module
WiFi.init(&EspSerial);
Serial.println(F("WiFi shield init done"));
#endif
#if ! (ESP32 || ESP8266)
// check for the presence of the shield
#if USE_WIFI_NINA
if (WiFi.status() == WL_NO_MODULE)
#else
if (WiFi.status() == WL_NO_SHIELD)
#endif
{
Serial.println(F("WiFi shield not present"));
// don't continue
while (true);
}
#endif
#if USE_WIFI_NINA
String fv = WiFi.firmwareVersion();
if (fv < WIFI_FIRMWARE_LATEST_VERSION)
{
Serial.println(F("Please upgrade the firmware"));
}
#endif
#if (ESP32 || ESP8266)
WiFi.mode(WIFI_STA);
Serial.print(F("Connecting to WPA SSID: "));
Serial.println(ssid);
if (WiFi.status() != WL_CONNECTED)
{
if (strlen(pass) >= 8)
{
WiFi.begin(ssid, pass);
}
else
{
WiFi.begin(ssid);
}
}
while (WiFi.status() != WL_CONNECTED)
{
delay(500);
}
#else
// attempt to connect to WiFi network
while ( status != WL_CONNECTED)
{
//delay(500);
Serial.print(F("Connecting to WPA SSID: "));
Serial.println(ssid);
// Connect to WPA/WPA2 network
status = WiFi.begin(ssid, pass);
}
#endif
server.on(F("/"), handleRoot);
server.on(F("/test.svg"), drawGraph);
server.on(F("/inline"), []()
{
server.send(200, F("text/plain"), F("This works as well"));
});
server.onNotFound(handleNotFound);
server.begin();
Serial.print(F("HTTP server started @ "));
Serial.println(WiFi.localIP());
}
void heartBeatPrint()
{
static int num = 1;
Serial.print(F("H"));
if (num == 80)
{
Serial.println();
num = 1;
}
else if (num++ % 10 == 0)
{
Serial.print(F(" "));
}
}
void check_status()
{
static unsigned long checkstatus_timeout = 0;
#define STATUS_CHECK_INTERVAL 60000L
// Send status report every STATUS_REPORT_INTERVAL (60) seconds: we don't need to send updates frequently if there is no status change.
if ((millis() > checkstatus_timeout) || (checkstatus_timeout == 0))
{
heartBeatPrint();
checkstatus_timeout = millis() + STATUS_CHECK_INTERVAL;
}
}
void loop()
{
server.handleClient();
check_status();
}