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Description
Hardware:
Board: ESP32 vs ESP8266
Core Installation/update date: ESP32 git from 21/jun/2018 vs ESP8266 CoreV2.4.0)
IDE name: Arduino IDE
Flash Frequency: 40Mhz
Upload Speed: 115200
Description:
Sketch on ESP32 is much bigger (about 2 times bigger).
Here is WiFiMulti as an example.
Sketch ESP8266:
#include <ESP8266WiFi.h>
#include <ESP8266WiFiMulti.h>
ESP8266WiFiMulti wifiMulti;
void setup() {
Serial.begin(115200);
delay(10);
WiFi.mode(WIFI_STA);
wifiMulti.addAP("ssid_from_AP_1", "your_password_for_AP_1");
wifiMulti.addAP("ssid_from_AP_2", "your_password_for_AP_2");
wifiMulti.addAP("ssid_from_AP_3", "your_password_for_AP_3");
Serial.println("Connecting Wifi...");
if(wifiMulti.run() == WL_CONNECTED) {
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}
}
void loop() {
if(wifiMulti.run() != WL_CONNECTED) {
Serial.println("WiFi not connected!");
delay(1000);
}
}RESULT:
Sketch uses 254175 bytes (24%) of program storage space. Maximum is 1044464 bytes.
Global variables use 33328 bytes (40%) of dynamic memory, leaving 48592 bytes for local variables. Maximum is 81920 bytes
Sketch ESP32:
#include <WiFi.h>
#include <WiFiMulti.h>
WiFiMulti wifiMulti;
void setup()
{
Serial.begin(115200);
delay(10);
wifiMulti.addAP("ssid_from_AP_1", "your_password_for_AP_1");
wifiMulti.addAP("ssid_from_AP_2", "your_password_for_AP_2");
wifiMulti.addAP("ssid_from_AP_3", "your_password_for_AP_3");
Serial.println("Connecting Wifi...");
if(wifiMulti.run() == WL_CONNECTED) {
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}
}
void loop()
{
if(wifiMulti.run() != WL_CONNECTED) {
Serial.println("WiFi not connected!");
delay(1000);
}
}RESULT:
Sketch uses 537078 bytes (40%) of program storage space. Maximum is 1310720 bytes.
Global variables use 38036 bytes (12%) of dynamic memory, leaving 256876 bytes for local variables. Maximum is 294912 bytes.
537078 bytes vs 254175 byte is pretty big difference.
I doubt that I the first one who noticed this, but I did not find any info about this issue.
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