I am getting the Arduino console error "the selected serial port serial.serialutil.SerialTimeoutException: Write timeout does not exist or your board is not connected". I recently upgraded to esp8266 version 3.0.2 and cannot upload a simple blink led sketch to my board. Does anyone know how to resolve this? I would like to be able to use the latest core although downgrading to version 2.7.4 allows me to upload sometimes.
Arduino Code:
#define LED_BUILTIN 2
void setup() {
pinMode(LED_BUILTIN, OUTPUT); // Initialize the LED_BUILTIN pin as an output
}
// the loop function runs over and over again forever
void loop() {
digitalWrite(LED_BUILTIN, LOW); // Turn the LED on (Note that LOW is the voltage level
// but actually the LED is on; this is because
// it is acive low on the ESP-01)
delay(1000); // Wait for a second
digitalWrite(LED_BUILTIN, HIGH); // Turn the LED off by making the voltage HIGH
delay(2000); // Wait for two seconds (to demonstrate the active low LED)
}
Console output: Arduino: 1.8.13 (Windows 10), Board: "NodeMCU 1.0 (ESP-12E 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, 4MB (FS:2MB OTA:~1019KB), 2, v2 Lower Memory, Disabled, None, Only Sketch, 115200"
Executable segment sizes:
ICACHE : 32768 - flash instruction cache
IROM : 231724 - code in flash (default or ICACHE_FLASH_ATTR)
IRAM : 26793 / 32768 - code in IRAM (IRAM_ATTR, ISRs...)
DATA : 1496 ) - initialized variables (global, static) in RAM/HEAP
RODATA : 876 ) / 81920 - constants (global, static) in RAM/HEAP
BSS : 25608 ) - zeroed variables (global, static) in RAM/HEAP
Sketch uses 260889 bytes (24%) of program storage space. Maximum is 1044464 bytes.
Global variables use 27980 bytes (34%) of dynamic memory, leaving 53940 bytes for local variables. Maximum is 81920 bytes.
esptool.py v3.0
Serial port COM4
Connecting...
Traceback (most recent call last):
File "C:\Users\ab\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.0.2/tools/upload.py", line 66, in
esptool.main(cmdline)
File "C:/Users/ab/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.2/tools/esptool\esptool.py", line 3552, in main
esp.connect(args.before, args.connect_attempts)
File "C:/Users/ab/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.2/tools/esptool\esptool.py", line 519, in connect
last_error = self._connect_attempt(mode=mode, esp32r0_delay=False)
File "C:/Users/ab/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.2/tools/esptool\esptool.py", line 499, in _connect_attempt
self.sync()
File "C:/Users/ab/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.2/tools/esptool\esptool.py", line 438, in sync
timeout=SYNC_TIMEOUT)
File "C:/Users/ab/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.2/tools/esptool\esptool.py", line 376, in command
self.write(pkt)
File "C:/Users/ab/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.2/tools/esptool\esptool.py", line 339, in write
self._port.write(buf)
File "C:/Users/ab/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/3.0.2/tools/pyserial\serial\serialwin32.py", line 325, in write
raise SerialTimeoutException('Write timeout')
serial.serialutil.SerialTimeoutException: Write timeout
the selected serial port serial.serialutil.SerialTimeoutException: Write timeout
does not exist or your board is not connected
This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences.
