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Async_AdvancedWebServer_MemoryIssues_SendArduinoString.ino
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Async_AdvancedWebServer_MemoryIssues_SendArduinoString.ino
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/****************************************************************************************************************************
Async_AdvancedWebServer_MemoryIssues_SendArduinoString.ino
For W5500 LwIP Ethernet in ESP32 (ESP32 + W5500)
AsyncWebServer_ESP32_W5500 is a library for the LwIP Ethernet W5500 in ESP32 to run AsyncWebServer
Based on and modified from ESPAsyncWebServer (https://github.com/me-no-dev/ESPAsyncWebServer)
Built by Khoi Hoang https://github.com/khoih-prog/AsyncWebServer_ESP32_W5500
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(ESP32) )
#error This code is designed for (ESP32 + W5500) to run on ESP32 platform! Please check your Tools->Board setting.
#endif
#include <Arduino.h>
#define _ASYNC_WEBSERVER_LOGLEVEL_ 2
// Enter a MAC address and IP address for your controller below.
#define NUMBER_OF_MAC 20
byte mac[][NUMBER_OF_MAC] =
{
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x01 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x02 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x03 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x04 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x05 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x06 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x07 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x08 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x09 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x0A },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x0B },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x0C },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x0D },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x0E },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x0F },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x10 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x11 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x12 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0x13 },
{ 0xDE, 0xAD, 0xBE, 0xEF, 0xBE, 0x14 },
};
// Select the IP address according to your local network
IPAddress myIP(192, 168, 2, 232);
IPAddress myGW(192, 168, 2, 1);
IPAddress mySN(255, 255, 255, 0);
// Google DNS Server IP
IPAddress myDNS(8, 8, 8, 8);
//////////////////////////////////////////////////////////
// Optional values to override default settings
// Don't change unless you know what you're doing
//#define ETH_SPI_HOST SPI3_HOST
//#define SPI_CLOCK_MHZ 25
// Must connect INT to GPIOxx or not working
//#define INT_GPIO 4
//#define MISO_GPIO 19
//#define MOSI_GPIO 23
//#define SCK_GPIO 18
//#define CS_GPIO 5
//////////////////////////////////////////////////////////
#include <AsyncTCP.h>
#include <AsyncWebServer_ESP32_W5500.h>
// In bytes
#define STRING_SIZE 40000
AsyncWebServer server(80);
int reqCount = 0; // number of requests received
#define BUFFER_SIZE 512
char temp[BUFFER_SIZE];
void handleRoot(AsyncWebServerRequest *request)
{
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='60'/>\
<title>AsyncWebServer-%s</title>\
<style>\
body { background-color: #cccccc; font-family: Arial, Helvetica, Sans-Serif; Color: #000088; }\
</style>\
</head>\
<body>\
<h2>AsyncWebServer_ESP32_W5500!</h2>\
<h3>running on %s</h3>\
<p>Uptime: %d d %02d:%02d:%02d</p>\
<img src=\"/test.svg\" />\
</body>\
</html>", ARDUINO_BOARD, ARDUINO_BOARD, day, hr % 24, min % 60, sec % 60);
request->send(200, "text/html", temp);
}
void handleNotFound(AsyncWebServerRequest *request)
{
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);
}
void PrintHeapData(String hIn)
{
static uint32_t maxFreeHeap = 0xFFFFFFFF;
static uint32_t totalHeap = ESP.getHeapSize();
uint32_t freeHeap = ESP.getFreeHeap();
// Print and update only when larger heap
if (maxFreeHeap > freeHeap)
{
maxFreeHeap = freeHeap;
Serial.print("\nHEAP DATA - ");
Serial.print(hIn);
Serial.print(" Max heap: ");
Serial.print(totalHeap);
Serial.print(" Free heap: ");
Serial.print(ESP.getFreeHeap());
Serial.print(" Used heap: ");
Serial.println(totalHeap - freeHeap);
}
}
void PrintStringSize(String & out)
{
static uint32_t count = 0;
// Print only when cStr length too large and corrupting memory or every (20 * 5) s
if ( (out.length() >= STRING_SIZE) || (++count > 20) )
{
Serial.print("\nOut String Length=");
Serial.println(out.length());
count = 0;
}
}
void drawGraph(AsyncWebServerRequest *request)
{
String out;
out.reserve(STRING_SIZE);
char temp[70];
out += "<svg xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\" width=\"1810\" height=\"150\">\n";
out += "<rect width=\"1810\" 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 < 5000; 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";
PrintHeapData("Pre Send");
PrintStringSize(out);
request->send(200, "image/svg+xml", out);
PrintHeapData("Post Send");
}
void setup()
{
Serial.begin(115200);
while (!Serial && millis() < 5000);
delay(200);
Serial.print("\nStart Async_AdvancedWebServer_MemoryIssues_SendArduinoString on ");
Serial.print(ARDUINO_BOARD);
Serial.print(" with ");
Serial.println(SHIELD_TYPE);
Serial.println(ASYNC_WEBSERVER_ESP32_W5500_VERSION);
AWS_LOGWARN(F("Default SPI pinout:"));
AWS_LOGWARN1(F("SPI_HOST:"), ETH_SPI_HOST);
AWS_LOGWARN1(F("MOSI:"), MOSI_GPIO);
AWS_LOGWARN1(F("MISO:"), MISO_GPIO);
AWS_LOGWARN1(F("SCK:"), SCK_GPIO);
AWS_LOGWARN1(F("CS:"), CS_GPIO);
AWS_LOGWARN1(F("INT:"), INT_GPIO);
AWS_LOGWARN1(F("SPI Clock (MHz):"), SPI_CLOCK_MHZ);
AWS_LOGWARN(F("========================="));
///////////////////////////////////
// To be called before ETH.begin()
ESP32_W5500_onEvent();
// start the ethernet connection and the server:
// Use DHCP dynamic IP and random mac
uint16_t index = millis() % NUMBER_OF_MAC;
//bool begin(int MISO_GPIO, int MOSI_GPIO, int SCLK_GPIO, int CS_GPIO, int INT_GPIO, int SPI_CLOCK_MHZ,
// int SPI_HOST, uint8_t *W5500_Mac = W5500_Default_Mac);
//ETH.begin( MISO_GPIO, MOSI_GPIO, SCK_GPIO, CS_GPIO, INT_GPIO, SPI_CLOCK_MHZ, ETH_SPI_HOST );
ETH.begin( MISO_GPIO, MOSI_GPIO, SCK_GPIO, CS_GPIO, INT_GPIO, SPI_CLOCK_MHZ, ETH_SPI_HOST, mac[index] );
// Static IP, leave without this line to get IP via DHCP
//bool config(IPAddress local_ip, IPAddress gateway, IPAddress subnet, IPAddress dns1 = 0, IPAddress dns2 = 0);
//ETH.config(myIP, myGW, mySN, myDNS);
ESP32_W5500_waitForConnect();
///////////////////////////////////
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(ETH.localIP());
PrintHeapData("Pre Create Arduino String");
}
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();
}