How do I debug this <Failed to connect ESP8266: Invalid head of packet>

Using Arduino Avrdude, stk500, Bootloader issues
1

This is the error message i received
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Arduino: 1.8.15 (Windows 10), Board: "Generic ESP8266 Module, 80 MHz, Flash, Disabled (new aborts on oom), Disabled, All SSL ciphers (most compatible), 32KB cache + 32KB IRAM (balanced), Use pgm_read macros for IRAM/PROGMEM, dtr (aka nodemcu), 26 MHz, 40MHz, DOUT (compatible), 1MB (FS:64KB OTA:~470KB), 2, nonos-sdk 2.2.1+100 (190703), v2 Lower Memory, Disabled, None, Only Sketch, 115200"

Executable segment sizes:

ICACHE : 32768 - flash instruction cache

IROM : 238704 - code in flash (default or ICACHE_FLASH_ATTR)

IRAM : 26733 / 32768 - code in IRAM (IRAM_ATTR, ISRs...)

DATA : 1504 ) - initialized variables (global, static) in RAM/HEAP

RODATA : 1004 ) / 81920 - constants (global, static) in RAM/HEAP

BSS : 25664 ) - zeroed variables (global, static) in RAM/HEAP

Sketch uses 267945 bytes (27%) of program storage space. Maximum is 958448 bytes.

Global variables use 28172 bytes (34%) of dynamic memory, leaving 53748 bytes for local variables. Maximum is 81920 bytes.

esptool.py v3.0

Serial port COM3

Connecting......................................____Traceback (most recent call last):

File "C:\Users\wweih\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.0.0/tools/upload.py", line 66, in 

esptool.main(cmdline)

File "C:/Users/wweih/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.0/tools/esptool\esptool.py", line 3552, in main

esp.connect(args.before, args.connect_attempts)

File "C:/Users/wweih/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.0/tools/esptool\esptool.py", line 529, in connect

raise FatalError('Failed to connect to %s: %s' % (self.CHIP_NAME, last_error))

esptool.FatalError: Failed to connect to ESP8266: Invalid head of packet (0xF0)

esptool.FatalError: Failed to connect to ESP8266: Invalid head of packet (0xF0)

_

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

Thanks.

2

I would try to uninstall the esp-core and re-install it. You are using v3.0 ?
try 2.7.2 or something.
The program compiles ok.,.

3

I'm using 3.0 but even after I tried 2.7.2 it still doesn't compile.

4

Below is the code I'm trying to work with.
/////////////////////////////////////////////////////////////////////////////

#include <ESP8266WiFi.h>
#include <WiFi.h>

const char* ssid = "Tundra";
const char* password = "MyPassword";

void setup() {
Serial.begin(115200);
delay(10);
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);

// We start by connecting to a WiFi network

Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);

WiFi.begin(ssid, password);

while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}

Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}

5

It compiles just fine. The issue is in the upload.

6

so what should i do to make it upload? can you help me, thanks

7

What hardware are you using to upload, and to what device ?

8

i'm using my laptop and my personal hotspot to connect esp8266-01, I'm currently not uploading any data yet just trying to connect my esp to wifi.

9

So what are you using to connect the ESP-01 to your com port ?
You are trying to upload firmware.
This tutorial explains in detail the possibilities on how to do that.

10

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