Dattatraya Apte asked 6 years ago
Dear Mr. Rui
While up loading sketch on ESP 8266 I am getting following error. Board Selected is Node MCU 1.0. Port Selected is also correct.
Build options changed, rebuilding all
Archiving built core (caching) in: C:\Users\APTE\AppData\Local\Temp\arduino_cache_917000\core\core_esp8266_esp8266_nodemcuv2_CpuFrequency_80,VTable_flash,FlashSize_4M1M,LwIPVariant_v2mss536,Debug_Disabled,DebugLevel_None____,FlashErase_none,UploadSpeed_115200_3ee5ad3c9efaacaced2454c87450e2f8.a
Sketch uses 247960 bytes (23%) of program storage space. Maximum is 1044464 bytes.
Global variables use 28032 bytes (34%) of dynamic memory, leaving 53888 bytes for local variables. Maximum is 81920 bytes.
warning: espcomm_sync failed
error: espcomm_open failed
error: espcomm_upload_mem failed
error: espcomm_upload_mem failed
Rui Santos Staff answered 6 years ago
Hi, that shouldn’t happen with an ESP NodeMCU board. It should instantly flash/upload a new code. In the Arduino IDE, after pressing the upload button:
- Hold-down the FLASH/BOOT button in the board until the flashing process is completed
Does it work?
Double-check that the COM port is selected (with the tick symbol).