Arduino: 1.8.4 (Windows 10), Board: "Generic ESP8266 Module, 80 MHz, Flash, Enabled, ck, 26 MHz, 40MHz, QIO, 512K (no SPIFFS), 2, v2 Lower Memory, Disabled, None, Only Sketch, 115200"
Archiving built core (caching) in: C:\Users\Java\AppData\Local\Temp\arduino_cache_8101\core\core_esp8266_esp8266_generic_xtal_80,vt_flash,exception_enabled,ResetMethod_ck,CrystalFreq_26,FlashFreq_40,FlashMode_qio,eesz_512K,led_2,ip_lm2f,dbg_Disabled,lvl_None____,wipe_none,baud_115200_159e75d41891d1e4fb711824f439b28b.a
Sketch uses 312176 bytes (62%) of program storage space. Maximum is 499696 bytes.
Global variables use 28528 bytes (34%) of dynamic memory, leaving 53392 bytes for local variables. Maximum is 81920 bytes.
C:\Users\Java\AppData\Local\Arduino15\packages\esp8266\tools\esptool\2.5.0-3-20ed2b9/esptool.exe -vv -cd ck -cb 115200 -cp COM4 -ca 0x00000 -cf C:\Users\Java\AppData\Local\Temp\arduino_build_532219/MQTT.ino.bin
esptool v0.4.13-1-gf80ae31 - (c) 2014 Ch. Klippel <ck@atelier-klippel.de>
setting board to ck
setting baudrate from 115200 to 115200
setting port from COM1 to COM4
setting address from 0x00000000 to 0x00000000
espcomm_upload_file
espcomm_upload_mem
setting serial port timeouts to 1000 ms
opening bootloader
resetting board
trying to connect
flush start
setting serial port timeouts to 1 ms
setting serial port timeouts to 1000 ms
flush complete
espcomm_send_command: sending command header
espcomm_send_command: sending command payload
read 0, requested 1
trying to connect
flush start
setting serial port timeouts to 1 ms
setting serial port timeouts to 1000 ms
flush complete
espcomm_send_command: sending command header
espcomm_send_command: sending command payload
read 0, requested 1
trying to connect
flush start
setting serial port timeouts to 1 ms
setting serial port timeouts to 1000 ms
flush complete
espcomm_send_command: sending command header
wrote 0, requested 8
error: failed sending 8 bytes
espcomm_send_command: sending command payload
wrote 0, requested 36
error: failed sending 36 bytes
wrote 0, requested 1
error: failed sending 0xC0
read 0, requested 1
resetting board
trying to connect
flush start
setting serial port timeouts to 1 ms
setting serial port timeouts to 1000 ms
flush complete
espcomm_send_command: sending command header
espcomm_send_command: sending command payload
read 0, requested 1
trying to connect
flush start
the selected serial port trying to connect
does not exist or your board is not connected
setting serial port timeouts to 1 ms
setting serial port timeouts to 1000 ms
flush complete
espcomm_send_command: sending command header
espcomm_send_command: sending command payload
read 0, requested 1
trying to connect
flush start
setting serial port timeouts to 1 ms
setting serial port timeouts to 1000 ms
flush complete
espcomm_send_command: sending command header
wrote 0, requested 8
error: failed sending 8 bytes
espcomm_send_command: sending command payload
wrote 0, requested 36
error: failed sending 36 bytes
wrote 0, requested 1
error: failed sending 0xC0
read 0, requested 1
resetting board
trying to connect
flush start
setting serial port timeouts to 1 ms
setting serial port timeouts to 1000 ms
flush complete
espcomm_send_command: sending command header
espcomm_send_command: sending command payload
read 0, requested 1
trying to connect
flush start
setting serial port timeouts to 1 ms
setting serial port timeouts to 1000 ms
flush complete
espcomm_send_command: sending command header
espcomm_send_command: sending command payload
read 0, requested 1
trying to connect
flush start
setting serial port timeouts to 1 ms
setting serial port timeouts to 1000 ms
flush complete
espcomm_send_command: sending command header
wrote 0, requested 8
error: failed sending 8 bytes
espcomm_send_command: sending command payload
wrote 0, requested 36
error: failed sending 36 bytes
wrote 0, requested 1
error: failed sending 0xC0
read 0, requested 1
warning: espcomm_sync failed
error: espcomm_open failed
error: espcomm_upload_mem failed
This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.