Error flashing when using ESP32-S2-WROVER (Saola-1R module)

davorvr commented 2 years ago

Hello, I keep getting an error when trying to flash via WiFi. I'm using a modified WiFi101_OTA example which connects successfully:

/*

 This example connects to an WPA encrypted WiFi network.
 Then it prints the  MAC address of the Wifi shield,
 the IP address obtained, and other network details.
 It then polls for sketch updates over WiFi, sketches
 can be updated by selecting a network port from within
 the Arduino IDE: Tools -> Port -> Network Ports ...

 Circuit:
 * WiFi shield attached

 created 13 July 2010
 by dlf (Metodo2 srl)
 modified 31 May 2012
 by Tom Igoe
 modified 16 January 2017
 by Sandeep Mistry 
 */

#include <SPI.h>
#include <WiFi.h>
#include <ArduinoOTA.h>

#include "config.h"
///////please enter your sensitive data in the Secret tab/arduino_secrets.h
/////// Wifi Settings ///////
char ssid[] = WIFI_SSID;      // your network SSID (name)
char pass[] = WIFI_PASS;   // your network password

//int status = WL_IDLE_STATUS;

void setup() {
  //Initialize serial:
  Serial.begin(115200);
  //Serial.println("Booting");
  WiFi.mode(WIFI_STA);
  if (!WiFi.config(LOCAL_IP, GATEWAY, SUBNET, DNS_PRIM, DNS_SECOND)) {
    //Serial.println("STA Failed to configure");
  }

  // attempt to connect to Wifi network:
  WiFi.begin(ssid, pass);
  for (int i=0; i<600; i++) {
    if (WiFi.status() == WL_CONNECTED) break;
    delay(100);
  }
  if (WiFi.status() != WL_CONNECTED) {
    //Serial.println("Failed to connect. Restarting...");
    ESP.restart();
  } else {
    //Serial.println("Connected.");
  }

  // start the WiFi OTA library with internal (flash) based storage
  ArduinoOTA.begin(WiFi.localIP(), "Arduino", "password", InternalStorage);

  // you're connected now, so print out the status:
  printWifiStatus();
}

void loop() {
  // check for WiFi OTA updates
  ArduinoOTA.poll();

  // add your normal loop code below ...
  delay(1000);
}

void printWifiStatus() {
  // print the SSID of the network you're attached to:
  Serial.print("SSID: ");
  Serial.println(WiFi.SSID());

  // print your WiFi shield's IP address:
  IPAddress ip = WiFi.localIP();
  Serial.print("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");
}

The error is simply as follows:

Connecting to board ...  done
Uploading sketch ...  done
Flashing sketch ... Error flashing the sketch

The module only has 4 MB of flash, but the sketch is only about 600 kB so I'm not sure if this would be the issue. I have deleted the arduino-esp32 ArduinoOTA library directory before using this library.