Error compiling for ESP32

Using Arduino IDE 1.x
1

Sketch uses 1314058 bytes (100%) of program storage space. Maximum is 1310720 bytes.text section exceeds available space in board

Global variables use 51780 bytes (15%) of dynamic memory, leaving 275900 bytes for local variables. Maximum is 327680 bytes.
Sketch too big; see http://www.arduino.cc/en/Guide/Troubleshooting#size for tips on reducing it.
Error compiling for board ESP32 Dev Module.

Can someone help me with this Error? under is the code. I am trying things but nothing is working... :frowning:

#include <ThingSpeak.h> // add librery
#include <WiFi.h>

#include "BluetoothSerial.h"

BluetoothSerial SerialBT;

WiFiClient client;
unsigned long counterChannelNumber = 1; // Channel ID
const char * myCounterReadAPIKey = ""; // Read API Key
const int FieldNumber1 = 1; // The field you wish to read

String ssid_pass;
char *SSID1 = "";
char *PASS = "";

String ssid;
String pass;

const int LED1 = 12;
const int LED_BT = 13;
const int SW = 14;

bool flag = false;

void setup()
{
pinMode(LED1,OUTPUT);
pinMode(LED_BT,OUTPUT);
pinMode(SW,INPUT_PULLUP);

Serial.begin(115200);
Serial.println();

WiFi.begin(SSID1, PASS); // write wifi name & password

Serial.print("Connecting");
while (WiFi.status() != WL_CONNECTED)
{
delay(500);
Serial.print(".");
}
Serial.println();
Serial.print("Connected, IP address: ");
Serial.println(WiFi.localIP());
ThingSpeak.begin(client);

if(!SerialBT.begin("ESP32"))
{
Serial.println("An error occurred initializing Bluetooth");
}
}

void loop()
{
digitalWrite(LED_BT, LOW);
int input = digitalRead(SW);
Serial.print("input: ");Serial.println(input);
if(input == 0)
{
delay(50);
flag = true;
digitalWrite(LED_BT, HIGH);
}

while(flag == true)
{

while(SerialBT.available())
{
  ssid_pass = SerialBT.readString();
  //Serial.write(SerialBT.read());
  Serial.println(ssid_pass);

  for (int i = 0; i < ssid_pass.length(); i++) 
  {
    if (ssid_pass.substring(i, i+1) == ",") 
    {
      ssid = ssid_pass.substring(0, i);
      pass = ssid_pass.substring(i+1);
      Serial.print("SSID = ");Serial.println(ssid);
      Serial.print("Password = ");Serial.println(pass);
      delay(2000);
      flag = false;

      int n1 = ssid.length();
char char_array1[n1 + 1];
strcpy(char_array1, ssid.c_str());

int n2 = pass.length();
char char_array2[n2 + 1];
strcpy(char_array2, pass.c_str());


WiFi.begin(char_array1, char_array2);                 // write wifi name & password           

Serial.print("Connecting");
while (WiFi.status() != WL_CONNECTED)
{
  delay(500);
  Serial.print(".");
}
Serial.println();
Serial.print("Connected, IP address: ");
Serial.println(WiFi.localIP());
ThingSpeak.begin(client);


      break;
    }
  }  
}

}

int A = ThingSpeak.readLongField(counterChannelNumber, FieldNumber1, myCounterReadAPIKey);
Serial.println(A);
digitalWrite(LED1,A);
}

2

Welcome to the forum

Please follow the advice given in the link below when posting code, in particular the section entitled 'Posting code and common code problems'

Use code tags (the </> icon above the compose window) to make it easier to read and copy for examination

3

The ESP32 only has ONE, 1 wireless transmitter.

BT and WiFi are loaded to core number 0.

The BT code takes up about 50% of the RAM available to core0. WiFi takes up about 50% of the ram available to core0. Then add in BT and WiFi stack space and you run out of RAM for core0.

4

Under Tools->Partition Scheme pick something other than the default (1.2MB APP, 1.5MB SPIFFS).

I would try "Minimal SPIFFS" which will give you 1.9MB of program space instead of 1.2MB.

3 Likes
5

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