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Async_AdvancedWebServer.ino
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Async_AdvancedWebServer.ino
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/****************************************************************************************************************************
Async_AdvancedWebServer.ino - Dead simple AsyncWebServer for Portenta_H7
For Portenta_H7 (STM32H7) with Vision-Shield Ethernet or Murata WiFi
Portenta_H7_AsyncWebServer is a library for the Portenta_H7 with Vision-Shield Ethernet or Murata WiFi
Based on and modified from ESPAsyncWebServer (https://github.com/me-no-dev/ESPAsyncWebServer)
Built by Khoi Hoang https://github.com/khoih-prog/Portenta_H7_AsyncWebServer
Licensed under GPLv3 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.
*****************************************************************************************************************************/
#if !( defined(ARDUINO_PORTENTA_H7_M7) || defined(ARDUINO_PORTENTA_H7_M4) )
#error For Portenta_H7 only
#endif
#define _PORTENTA_H7_AWS_LOGLEVEL_ 1
#define USE_WIFI_PORTENTA_H7 true
#include <WiFi.h>
#warning Using WiFi for Portenta_H7.
#include <Portenta_H7_AsyncWebServer.h>
char ssid[] = "your_ssid"; // your network SSID (name)
char pass[] = "12345678"; // your network password (use for WPA, or use as key for WEP), length must be 8+
int status = WL_IDLE_STATUS;
AsyncWebServer server(80);
int reqCount = 0; // number of requests received
#define LED_OFF HIGH
#define LED_ON LOW
#define BUFFER_SIZE 512
char temp[BUFFER_SIZE];
void handleRoot(AsyncWebServerRequest *request)
{
digitalWrite(LED_BUILTIN, LED_ON);
int sec = millis() / 1000;
int min = sec / 60;
int hr = min / 60;
int day = hr / 24;
snprintf(temp, BUFFER_SIZE - 1,
"<html>\
<head>\
<meta http-equiv='refresh' content='5'/>\
<title>AsyncWebServer-%s</title>\
<style>\
body { background-color: #cccccc; font-family: Arial, Helvetica, Sans-Serif; Color: #000088; }\
</style>\
</head>\
<body>\
<h2>AsyncWebServer_Portenta_H7!</h2>\
<h3>running WiFi on %s</h3>\
<p>Uptime: %d d %02d:%02d:%02d</p>\
<img src=\"/test.svg\" />\
</body>\
</html>", BOARD_NAME, BOARD_NAME, day, hr % 24, min % 60, sec % 60);
request->send(200, "text/html", temp);
digitalWrite(LED_BUILTIN, LED_OFF);
}
void handleNotFound(AsyncWebServerRequest *request)
{
digitalWrite(LED_BUILTIN, LED_ON);
String message = "File Not Found\n\n";
message += "URI: ";
message += request->url();
message += "\nMethod: ";
message += (request->method() == HTTP_GET) ? "GET" : "POST";
message += "\nArguments: ";
message += request->args();
message += "\n";
for (uint8_t i = 0; i < request->args(); i++)
{
message += " " + request->argName(i) + ": " + request->arg(i) + "\n";
}
request->send(404, "text/plain", message);
digitalWrite(LED_BUILTIN, LED_OFF);
}
void drawGraph(AsyncWebServerRequest *request)
{
String out;
out.reserve(4000);
char temp[70];
out += "<svg xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\" width=\"310\" height=\"150\">\n";
out += "<rect width=\"310\" height=\"150\" fill=\"rgb(250, 230, 210)\" stroke-width=\"2\" stroke=\"rgb(0, 0, 0)\" />\n";
out += "<g stroke=\"blue\">\n";
int y = rand() % 130;
for (int x = 10; x < 300; 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 += "</g>\n</svg>\n";
request->send(200, "image/svg+xml", out);
}
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("Local 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 setup()
{
pinMode(LED_BUILTIN, OUTPUT);
digitalWrite(LED_BUILTIN, LED_OFF);
Serial.begin(115200);
while (!Serial && millis() < 5000);
delay(200);
Serial.print("\nStart Async_AdvancedWebServer on ");
Serial.print(BOARD_NAME);
Serial.print(" with ");
Serial.println(SHIELD_TYPE);
Serial.println(PORTENTA_H7_ASYNC_TCP_VERSION);
Serial.println(PORTENTA_H7_ASYNC_WEBSERVER_VERSION);
///////////////////////////////////
// check for the WiFi module:
if (WiFi.status() == WL_NO_MODULE)
{
Serial.println("Communication with WiFi module failed!");
// don't continue
while (true);
}
Serial.print(F("Connecting to SSID: "));
Serial.println(ssid);
status = WiFi.begin(ssid, pass);
delay(1000);
// attempt to connect to WiFi network
while ( status != WL_CONNECTED)
{
delay(500);
// Connect to WPA/WPA2 network
status = WiFi.status();
}
printWifiStatus();
///////////////////////////////////
server.on("/", HTTP_GET, [](AsyncWebServerRequest * request)
{
handleRoot(request);
});
server.on("/test.svg", HTTP_GET, [](AsyncWebServerRequest * request)
{
drawGraph(request);
});
server.on("/inline", [](AsyncWebServerRequest * request)
{
request->send(200, "text/plain", "This works as well");
});
server.onNotFound(handleNotFound);
server.begin();
Serial.print(F("HTTP EthernetWebServer is @ IP : "));
Serial.println(WiFi.localIP());
}
void heartBeatPrint()
{
static int num = 1;
Serial.print(F("."));
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 10000L
// 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()
{
check_status();
}