A fatal error occurred: Failed to connect to Espressif device: Timed out waiting for packet header (ESPTOOL-327) #293

JKTrowling · 2018-03-31T19:33:23Z

(Please delete any lines which don't apply.)

Operating system: Windows 10
Python version: 2.7.14
ESP hardware in use: Adafruit HUZZAH ESP8266 Breakout

Full esptool.py command line as run: ./esptool.py -p /dev/ttyS4 --trace erase_flash

Full output from esptool.py (please copy and paste all lines of output)

esptool.py v2.3.2-dev
Connecting...TRACE +0.000 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.116 Timed out waiting for packet header
.TRACE +0.063 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.137 Timed out waiting for packet header
.TRACE +0.063 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.105 Timed out waiting for packet header
.TRACE +0.054 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.126 Timed out waiting for packet header
.TRACE +0.053 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.110 Timed out waiting for packet header
.TRACE +1.831 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.123 Timed out waiting for packet header
_TRACE +0.054 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.120 Timed out waiting for packet header
_TRACE +0.064 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.115 Timed out waiting for packet header
_TRACE +0.052 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.116 Timed out waiting for packet header
_TRACE +0.064 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.120 Timed out waiting for packet header
_TRACE +0.223 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.127 Timed out waiting for packet header
.TRACE +0.063 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.106 Timed out waiting for packet header
.TRACE +0.054 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.145 Timed out waiting for packet header
.TRACE +0.051 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.135 Timed out waiting for packet header
.TRACE +0.064 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.115 Timed out waiting for packet header
.TRACE +1.843 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.107 Timed out waiting for packet header
_TRACE +0.056 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.117 Timed out waiting for packet header
_TRACE +0.059 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.130 Timed out waiting for packet header
_TRACE +0.065 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.136 Timed out waiting for packet header
_TRACE +0.065 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.130 Timed out waiting for packet header
_TRACE +0.217 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.103 Timed out waiting for packet header
.TRACE +0.065 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.115 Timed out waiting for packet header
.TRACE +0.054 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.121 Timed out waiting for packet header
.TRACE +0.063 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.132 Timed out waiting for packet header
.TRACE +0.052 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.115 Timed out waiting for packet header
.TRACE +1.831 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.146 Timed out waiting for packet header
_TRACE +0.053 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.116 Timed out waiting for packet header
_TRACE +0.063 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.121 Timed out waiting for packet header
_TRACE +0.064 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.120 Timed out waiting for packet header
_TRACE +0.051 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.133 Timed out waiting for packet header
_TRACE +0.233 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.131 Timed out waiting for packet header
.TRACE +0.052 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.112 Timed out waiting for packet header
.TRACE +0.051 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.101 Timed out waiting for packet header
.TRACE +0.055 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.135 Timed out waiting for packet header
.TRACE +0.064 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.131 Timed out waiting for packet header
.TRACE +1.826 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.122 Timed out waiting for packet header
_TRACE +0.051 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.127 Timed out waiting for packet header
_TRACE +0.051 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.107 Timed out waiting for packet header
_TRACE +0.064 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.109 Timed out waiting for packet header
_TRACE +0.051 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.126 Timed out waiting for packet header
_TRACE +0.224 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.148 Timed out waiting for packet header
.TRACE +0.053 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.113 Timed out waiting for packet header
.TRACE +0.052 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.109 Timed out waiting for packet header
.TRACE +0.051 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.109 Timed out waiting for packet header
.TRACE +0.051 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.118 Timed out waiting for packet header
.TRACE +1.839 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.113 Timed out waiting for packet header
_TRACE +0.052 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.133 Timed out waiting for packet header
_TRACE +0.052 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.132 Timed out waiting for packet header
_TRACE +0.063 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.120 Timed out waiting for packet header
_TRACE +0.053 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.116 Timed out waiting for packet header
_TRACE +0.212 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.120 Timed out waiting for packet header
.TRACE +0.064 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.136 Timed out waiting for packet header
.TRACE +0.052 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.127 Timed out waiting for packet header
.TRACE +0.054 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.131 Timed out waiting for packet header
.TRACE +0.054 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.125 Timed out waiting for packet header
.TRACE +1.828 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.147 Timed out waiting for packet header
_TRACE +0.051 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.118 Timed out waiting for packet header
_TRACE +0.063 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.146 Timed out waiting for packet header
_TRACE +0.054 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.147 Timed out waiting for packet header
_TRACE +0.053 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.121 Timed out waiting for packet header
_TRACE +0.215 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.148 Timed out waiting for packet header
.TRACE +0.059 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.125 Timed out waiting for packet header
.TRACE +0.063 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.126 Timed out waiting for packet header
.TRACE +0.060 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.113 Timed out waiting for packet header
.TRACE +0.051 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.110 Timed out waiting for packet header
.TRACE +1.833 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.127 Timed out waiting for packet header
_TRACE +0.059 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.130 Timed out waiting for packet header
_TRACE +0.051 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.108 Timed out waiting for packet header
_TRACE +0.051 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.138 Timed out waiting for packet header
_TRACE +0.055 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.112 Timed out waiting for packet header
_TRACE +0.218 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.131 Timed out waiting for packet header
.TRACE +0.053 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.116 Timed out waiting for packet header
.TRACE +0.063 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.143 Timed out waiting for packet header
.TRACE +0.063 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.132 Timed out waiting for packet header
.TRACE +0.052 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.131 Timed out waiting for packet header
.TRACE +1.835 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.119 Timed out waiting for packet header
_TRACE +0.052 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.132 Timed out waiting for packet header
_TRACE +0.063 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.106 Timed out waiting for packet header
_TRACE +0.053 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.116 Timed out waiting for packet header
_TRACE +0.051 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.128 Timed out waiting for packet header
_TRACE +0.216 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.135 Timed out waiting for packet header
.TRACE +0.064 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.115 Timed out waiting for packet header
.TRACE +0.058 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.146 Timed out waiting for packet header
.TRACE +0.054 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.106 Timed out waiting for packet header
.TRACE +0.051 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.108 Timed out waiting for packet header
.TRACE +1.832 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.122 Timed out waiting for packet header
_TRACE +0.065 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.136 Timed out waiting for packet header
_TRACE +0.064 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.126 Timed out waiting for packet header
_TRACE +0.056 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.134 Timed out waiting for packet header
_TRACE +0.053 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.147 Timed out waiting for packet header
_TRACE +0.219 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.109 Timed out waiting for packet header
.TRACE +0.058 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.131 Timed out waiting for packet header
.TRACE +0.051 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.119 Timed out waiting for packet header
.TRACE +0.053 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.147 Timed out waiting for packet header
.TRACE +0.051 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.117 Timed out waiting for packet header
.TRACE +1.836 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.115 Timed out waiting for packet header
_TRACE +0.052 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.104 Timed out waiting for packet header
_TRACE +0.060 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.125 Timed out waiting for packet header
_TRACE +0.059 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.116 Timed out waiting for packet header
_TRACE +0.070 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.120 Timed out waiting for packet header
_

A fatal error occurred: Failed to connect to Espressif device: Timed out waiting for packet header

What is the expected behaviour?

Erase the current firmware

Is there any other information you can think of which will help us reproduce this problem?

Connected from the esp8226 breakout to my windows 10 machine using https://www.amazon.com/gp/product/B014GZTCC6

projectgus · 2018-04-02T23:50:00Z

Hi @JKTrowling ,

Thanks for providing those details. The trace indicates that no data at all was received from the ESP8266. Please check the following:

Correct serial connections https://github.com/espressif/esptool#serial-connections
Correct boot mode selection (see https://github.com/espressif/esptool/wiki/ESP8266-Boot-Mode-Selection) - you'll need to hold GPIO0 while pressing and releasing Reset, and then run esptool.py.
Try the troubleshooting issues mentioned in the README: https://github.com/espressif/esptool#bootloader-wont-respond

If none of this works, it may be a hardware issue - I suggest talking to Adafruit.

doquen · 2018-04-23T16:27:20Z

Hi,
I have a similar error,

esptool.py v2.3.1 Connecting...TRACE +0.000 command op=0x08 data len=36 wait_response=1 timeout=0.100 data='\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU' TRACE +0.000 Write 46 bytes: '\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0' TRACE +0.001 Read 1 bytes: '\xc0' TRACE +0.001 Read 1 bytes: '\x00' TRACE +0.000 Read 11 bytes: '\x08$\x00\x00\x00\x00\x00\x07\x07\x12 ' TRACE +0.001 Read 1 bytes: 'U' TRACE +0.000 Read 10 bytes: 'UUUUUUUUUU' TRACE +0.001 Read 1 bytes: 'U' TRACE +0.000 Read 10 bytes: 'UUUUUUUUUU' TRACE +0.001 Read 1 bytes: 'U' TRACE +0.000 Read 10 bytes: 'UUUUUUUUU\xc0' TRACE +0.000 Full packet: '\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU' TRACE +0.100 Timed out waiting for packet header
In my case, apparently the bytes are read, but it times out anyway. I tryed all links in previous post without any success.. Is this hardware problem?

projectgus · 2018-04-26T23:15:12Z

Hi @pablof7 ,

It looks like your serial stream may be being corrupted, probably due to some hardware problem. The "full packet" for a sync response normally looks like this: '\x01\x08\x04\x00\x07\x12 U\x00\x00\x00\x00' (ESP32) or this '\x01\x08\x02\x00\x07\x07\x12 \x00\x00' (ESP8266).

Your board seems to be replying with ''\x08$\x00\x00\x00\x00\x00\x07\x07\x12 ' and then '\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU' which is similar but not the same...?

coffee-cup · 2018-05-04T10:02:50Z

I seem to be having a similar problem. My trace is

esptool.py v2.3.1
Connecting...TRACE +0.000 command op=0x08 data len=36 wait_response=1 timeout=0.100 data=b'\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.003 Write 46 bytes: b'\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.100 Timed out waiting for packet header
.TRACE +0.057 command op=0x08 data len=36 wait_response=1 timeout=0.100 data=b'\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: b'\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.103 Timed out waiting for packet header
.TRACE +0.056 command op=0x08 data len=36 wait_response=1 timeout=0.100 data=b'\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: b'\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.104 Timed out waiting for packet header
.TRACE +0.056 command op=0x08 data len=36 wait_response=1 timeout=0.100 data=b'\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: b'\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.101 Timed out waiting for packet header
.TRACE +0.056 command op=0x08 data len=36 wait_response=1 timeout=0.100 data=b'\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU'
TRACE +0.000 Write 46 bytes: b'\xc0\x00\x08$\x00\x00\x00\x00\x00\x07\x07\x12 UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU\xc0'
TRACE +0.105 Timed out waiting for packet header

I can successfully view the boot messages over serial with a baud rate of 74880, but am unable to get esptool to connect. I was also able to successfully send AT commands before I bricked it with the wrong baud rate command. Another module I bought at the same time works without issue using the same setup. I am using a 3.3V breadboard power supply and have grounded GPIO0. The Rx and Tx are 5V this doesn't seem to be a problem for the other esp8266 module.

projectgus · 2018-05-09T02:35:05Z

Hi @pablof7 @coffee-cup

If you run esptool.py --baud 9600 ... to sync at a very low baudrate, does it start working? (If it does, this implies a physical signal integrity limitation with your serial connection.)

Angus

coffee-cup · 2018-05-09T06:39:01Z

Unfortunately not :( It does not work at any baud rate

theproxy · 2018-06-29T17:28:10Z

Are you on a Ryzen chipset? I was going to submit a same issue but I am trying same with esptool 2.4.1 on a Dell Inspiron 13 7000 2-in-1. Windows 10 reports Processor is "AMD Ryzen 5 2500U with Radeon Vega Mobile Gfx".

I tried running esptool --chip esp32 --port COM3 --baud 9600 read_mac and get same results.

I am successful talking to the device using TeraTerm so I believe it's not a serial terminal issue.

theproxy · 2018-06-29T17:43:40Z

My data:
TRACE +0.110 Timed out waiting for packet header
.TRACE +0.078 command op=0x08 data len=36 wait_response=1 timeout=0.100 data=
0707122055555555 5555555555555555 | ... UUUUUUUUUUUU
5555555555555555 5555555555555555 | UUUUUUUUUUUUUUUU
55555555 | UUUU
TRACE +0.000 Write 46 bytes:
c000082400000000 0007071220555555 | ...$........ UUU
5555555555555555 5555555555555555 | UUUUUUUUUUUUUUUU
5555555555555555 5555555555c0 | UUUUUUUUUUUUU.
TRACE +0.063 Read 1 bytes: 5b
TRACE +0.000 Read invalid data: 5b
TRACE +0.000 Remaining data in serial buffer:
494e464f5d205265 6164696e6720616c | INFO] Reading al
61726d2066696c65 0d0a | arm file..
.TRACE +0.109 command op=0x08 data len=36 wait_response=1 timeout=0.100 data=
0707122055555555 5555555555555555 | ... UUUUUUUUUUUU
5555555555555555 5555555555555555 | UUUUUUUUUUUUUUUU
55555555 | UUUU

projectgus · 2018-07-02T00:34:07Z

Hi @theproxy ,

You have some different symptoms here to @JKTrowling , because it looks like some data is being read from your ESP8266 - it's just not what esptool is expecting to see.

Usually this means the chip is not resetting into bootloader mode correctly. See here: https://github.com/espressif/esptool/#entering-the-bootloader

Angus

alesrebec · 2018-07-12T15:52:36Z

I'm having the same issue with ESP8266-01.
If I power on the ESP8266 the blue light is solid ON. In the monitor I get constant garbage.
All connections are fine because I'm reading and flashing other ESPs !!
I may only bricked this one after a wrong connection or some corruption in code.

If I boot it up (GPIO0 LOW + RESET - like I do with other where it works) and try to flash it I get the same error.
It cannot talk with ESP.

A fatal error occurred: Failed to connect to Espressif device: Timed out waiting for packet header

Is it dead or can I somehow unbrick it?

backpacked · 2018-09-14T18:54:08Z

My data:
TRACE +0.110 Timed out waiting for packet header
.TRACE +0.078 command op=0x08 data len=36 wait_response=1 timeout=0.100 data=
0707122055555555 5555555555555555 | ... UUUUUUUUUUUU
5555555555555555 5555555555555555 | UUUUUUUUUUUUUUUU
55555555 | UUUU
TRACE +0.000 Write 46 bytes:
c000082400000000 0007071220555555 | ...$........ UUU
5555555555555555 5555555555555555 | UUUUUUUUUUUUUUUU
5555555555555555 5555555555c0 | UUUUUUUUUUUUU.
TRACE +0.063 Read 1 bytes: 5b
TRACE +0.000 Read invalid data: 5b
TRACE +0.000 Remaining data in serial buffer:
494e464f5d205265 6164696e6720616c | INFO] Reading al
61726d2066696c65 0d0a | arm file..
.TRACE +0.109 command op=0x08 data len=36 wait_response=1 timeout=0.100 data=
0707122055555555 5555555555555555 | ... UUUUUUUUUUUU
5555555555555555 5555555555555555 | UUUUUUUUUUUUUUUU
55555555 | UUUU

I see similar output on my Sonoff Basic 2017-10-11. Have not been able to flash it yet. @theproxy, did you have any success? If so, what did you do?

backpacked · 2018-09-14T19:25:12Z

I installed the CP210 USB to TTL drivers and I was able to read the falsh and now I am working on flashing my device. I guess my problem was not having verified the drivers for the USB device. :)

RockfordWei · 2018-10-01T01:37:07Z

I have a similar issue but I am not sure if the problem is the command line parameters.

My win7 VM works well for flashing as the screenshot.

However, my mac with sudo pip install esptool doesn't work at all:

$ esptool.py --port /dev/tty.usbmodem1411 --baud 115200 --trace \
	write_flash \
	--flash_freq=40m \
	--flash_mode=dio \
	--flash_size=1MB  \
	0x00000 boot_v1.6.bin \
	0x01000 build/qbiq_esp_app.user1.1024.0x01000.bin \
	0x81000 build/qbiq_esp_app.user2.1024.0x81000.bin \
	0xFC000 esp_init_data_default.bin \
	0x7E000 blank.bin

will cause this:

Uploading stub...
Traceback (most recent call last):
  File "/usr/local/bin/esptool.py", line 2853, in <module>
    _main()
  File "/usr/local/bin/esptool.py", line 2846, in _main
    main()
  File "/usr/local/bin/esptool.py", line 2571, in main
    esp = esp.run_stub()
  File "/usr/local/bin/esptool.py", line 579, in run_stub
    self.mem_block(stub[field][from_offs:to_offs], seq)
  File "/usr/local/bin/esptool.py", line 492, in mem_block
    self.checksum(data))
  File "/usr/local/bin/esptool.py", line 340, in check_command
    val, data = self.command(op, data, chk, timeout=timeout)
  File "/usr/local/bin/esptool.py", line 308, in command
    self.write(pkt)
  File "/usr/local/bin/esptool.py", line 271, in write
    self._port.write(buf)
  File "/Library/Python/2.7/site-packages/serial/serialposix.py", line 552, in write
    raise writeTimeoutError
serial.serialutil.SerialTimeoutException: Write timeout

The full trace looks like this:

esptool.py v2.5.1
Serial port /dev/tty.usbmodem1411
Connecting...TRACE +0.000 command op=0x08 data len=36 wait_response=1 timeout=0.100 data=
    0707122055555555 5555555555555555 | ... UUUUUUUUUUUU
    5555555555555555 5555555555555555 | UUUUUUUUUUUUUUUU
    55555555                          | UUUU
TRACE +0.001 Write 46 bytes: 
    c000082400000000 0007071220555555 | ...$........ UUU
    5555555555555555 5555555555555555 | UUUUUUUUUUUUUUUU
    5555555555555555 5555555555c0     | UUUUUUUUUUUUU.
TRACE +0.106 Timed out waiting for packet header
.TRACE +0.058 command op=0x08 data len=36 wait_response=1 timeout=0.100 data=
    0707122055555555 5555555555555555 | ... UUUUUUUUUUUU
    5555555555555555 5555555555555555 | UUUUUUUUUUUUUUUU
    55555555                          | UUUU
TRACE +0.000 Write 46 bytes: 
    c000082400000000 0007071220555555 | ...$........ UUU
    5555555555555555 5555555555555555 | UUUUUUUUUUUUUUUU
    5555555555555555 5555555555c0     | UUUUUUUUUUUUU.
TRACE +0.027 Read 1 bytes: c0
TRACE +0.000 Read 95 bytes: 
    0108020007071220 0000c0c001080200 | ....... ........
    070712200000c0c0 0108020007071220 | ... ........... 
    0000c0c001080200 070712200000c0c0 | ........... ....
    0108020007071220 0000c0c001080200 | ....... ........
    070712200000c0c0 0108020007071220 | ... ........... 
    0000c0c001080200 070712200000c0   | ........... ...
TRACE +0.001 Received full packet: 01080200070712200000
TRACE +0.004 Received full packet: 01080200070712200000
TRACE +0.003 Received full packet: 01080200070712200000
TRACE +0.003 Received full packet: 01080200070712200000
TRACE +0.002 Received full packet: 01080200070712200000
TRACE +0.002 Received full packet: 01080200070712200000
TRACE +0.002 Received full packet: 01080200070712200000
TRACE +0.002 Received full packet: 01080200070712200000

Detecting chip type...TRACE +0.002 command op=0x0a data len=4 wait_response=1 timeout=3.000 data=78000060
TRACE +0.000 Write 14 bytes: c0000a04000000000078000060c0
TRACE +0.018 Read 1 bytes: c0
TRACE +0.000 Read 11 bytes: 010a0200002006000000c0
TRACE +0.000 Received full packet: 010a0200002006000000
 ESP8266
TRACE +0.000 command op=0x0a data len=4 wait_response=1 timeout=3.000 data=5c00f03f
TRACE +0.000 Write 14 bytes: c0000a0400000000005c00f03fc0
TRACE +0.013 Read 1 bytes: c0
TRACE +0.000 Read 11 bytes: 010a02007fcf5c000000c0
TRACE +0.000 Received full packet: 010a02007fcf5c000000
TRACE +0.003 command op=0x0a data len=4 wait_response=1 timeout=3.000 data=5800f03f
TRACE +0.000 Write 14 bytes: c0000a0400000000005800f03fc0
TRACE +0.016 Read 1 bytes: c0
TRACE +0.000 Read 11 bytes: 010a020000b000640000c0
TRACE +0.000 Received full packet: 010a020000b000640000
TRACE +0.004 command op=0x0a data len=4 wait_response=1 timeout=3.000 data=5400f03f
TRACE +0.000 Write 14 bytes: c0000a0400000000005400f03fc0
TRACE +0.016 Read 1 bytes: c0
TRACE +0.000 Read 11 bytes: 010a0200cdc800020000c0
TRACE +0.000 Received full packet: 010a0200cdc800020000
TRACE +0.003 command op=0x0a data len=4 wait_response=1 timeout=3.000 data=5000f03f
TRACE +0.000 Write 14 bytes: c0000a0400000000005000f03fc0
TRACE +0.017 Read 1 bytes: c0
TRACE +0.000 Read 11 bytes: 010a02000000c58d0000c0
TRACE +0.000 Received full packet: 010a02000000c58d0000
Chip is ESP8266EX
TRACE +0.003 command op=0x0a data len=4 wait_response=1 timeout=3.000 data=5c00f03f
TRACE +0.000 Write 14 bytes: c0000a0400000000005c00f03fc0
TRACE +0.016 Read 1 bytes: c0
TRACE +0.000 Read 11 bytes: 010a02007fcf5c000000c0
TRACE +0.000 Received full packet: 010a02007fcf5c000000
TRACE +0.002 command op=0x0a data len=4 wait_response=1 timeout=3.000 data=5800f03f
TRACE +0.000 Write 14 bytes: c0000a0400000000005800f03fc0
TRACE +0.017 Read 1 bytes: c0
TRACE +0.000 Read 11 bytes: 010a020000b000640000c0
TRACE +0.000 Received full packet: 010a020000b000640000
TRACE +0.004 command op=0x0a data len=4 wait_response=1 timeout=3.000 data=5400f03f
TRACE +0.000 Write 14 bytes: c0000a0400000000005400f03fc0
TRACE +0.016 Read 1 bytes: c0
TRACE +0.000 Read 11 bytes: 010a0200cdc800020000c0
TRACE +0.000 Received full packet: 010a0200cdc800020000
TRACE +0.003 command op=0x0a data len=4 wait_response=1 timeout=3.000 data=5000f03f
TRACE +0.000 Write 14 bytes: c0000a0400000000005000f03fc0
TRACE +0.017 Read 1 bytes: c0
TRACE +0.000 Read 11 bytes: 010a02000000c58d0000c0
TRACE +0.000 Received full packet: 010a02000000c58d0000
Features: WiFi
TRACE +0.004 command op=0x0a data len=4 wait_response=1 timeout=3.000 data=5000f03f
TRACE +0.000 Write 14 bytes: c0000a0400000000005000f03fc0
TRACE +0.016 Read 1 bytes: c0
TRACE +0.000 Read 11 bytes: 010a02000000c58d0000c0
TRACE +0.000 Received full packet: 010a02000000c58d0000
TRACE +0.003 command op=0x0a data len=4 wait_response=1 timeout=3.000 data=5400f03f
TRACE +0.000 Write 14 bytes: c0000a0400000000005400f03fc0
TRACE +0.017 Read 1 bytes: c0
TRACE +0.000 Read 11 bytes: 010a0200cdc800020000c0
TRACE +0.000 Received full packet: 010a0200cdc800020000
TRACE +0.004 command op=0x0a data len=4 wait_response=1 timeout=3.000 data=5c00f03f
TRACE +0.000 Write 14 bytes: c0000a0400000000005c00f03fc0
TRACE +0.016 Read 1 bytes: c0
TRACE +0.000 Read 11 bytes: 010a02007fcf5c000000c0
TRACE +0.000 Received full packet: 010a02007fcf5c000000
MAC: 5c:cf:7f:c8:cd:8d
Uploading stub...
TRACE +0.003 command op=0x05 data len=16 wait_response=1 timeout=3.000 data=601f0000020000000018000000e01040
TRACE +0.000 Write 26 bytes: 
    c000051000000000 00601f0000020000 | .........`......
    000018000000e010 40c0             | ........@.
TRACE +0.017 Read 1 bytes: c0
TRACE +0.000 Read 11 bytes: 010502007fcf5c000000c0
TRACE +0.000 Received full packet: 010502007fcf5c000000
TRACE +0.006 command op=0x07 data len=6160 wait_response=1 timeout=3.000 data=
    0018000000000000 0000000000000000 | ................
    a810004001ffff46 450000000080fe3f | [email protected]......?
    4f484149a4abff3f 0cabfe3f80800000 | OHAI...?...?....
    e8f910400c000060 0000000100000100 | ...@...`........
    00100000ffff0000 8c80000010400000 | .............@..
    0000ffff00400000 0080fe3f9c2bff3f | .....@.....?.+.?
    a02bff3f10270000 14000060ffff0f00 | .+.?.'.....`....
    a4abff3fa4abff3f a42bff3fb4abff3f | ...?...?.+.?...?
    0080000020290000 f88dfe3f5880fe3f | .... ).....?X..?
    a8abff3f98aeff3f 989bfe3f84aeff3f | ...?...?...?...?
    801b0000a00d0000 0008000020090000 | ............ ...
    500e000050120000 acabff3fb0abff3f | P...P......?...?
    1f2900003ca9fe3f 08aeff3f8cadff3f | .)..<..?...?...?
    800b00000cadff3f 8cacff3fb0150000 | .......?...?....
    f1ff000000abfe3f 00a9fe3fbc0f0040 | .......?...?...@
    880f0040a80f0040 583f00402c4c0040 | ...@...@X?.@,L.@
    303b004078480040 004a0040b4490040 | 0;.@[email protected][email protected].@
    cc2e00401ce20040 d839004068e20040 | ...@[email protected].@h..@
    48df004090e10040 4c26004084490040 | H..@...@L&[email protected].@
    21bcff92a1109011 c022612322a00002 | !........"a#"...
    6143c26142d26141 e26140f2613f01e7 | [email protected]?..
    ffc0000021b2ff31 b3ff0c0406010000 | ....!..1........
    49024b223732f822 a08c2a210c4345b3 | I.K"72."..*!.CE.
    0121aeffc1adff31 aeff2a2cc02000c9 | .!.....1..*,. ..
    0242a00022a00501 daffc0000021a9ff | .B.."........!..
    32a101c020004802 303420c020003902 | 2... .H.04 . .9.
    2c0201d4ffc00000 01d4ffc0000031a2 | ,.............1.
    ff41a2ff51a3ff71 a3ff0c0262a10001 | .A..Q..q....b...
    cfffc0000021a0ff 3198ff2a23c02000 | .....!..1..*#. .
    38021673ffc02000 c8020c03c0200039 | 8..s.. ...... .9
    020c12224184220c 010c242241854251 | ..."A."...$"A.BQ
    433261222692081c 3337121f86080000 | C2a"&...37......
    220c03320c028022 1130222066421228 | "..2...".0" fB.(
    2cc0200028022261 2246010022a01222 | ,. .(."a"F..".."
    514322a0c001b6ff c0000022a0841022 | QC"........"..."
    8032a00845a401f2 0c03220c0280ff11 | .2..E.....".....
    20ff202182fff7b2 17059e0122a0ee01 |  . !........"...
    acffc0000022a0c0 01aaffc00000c6d8 | ....."..........
    ff320c010cd22793 02c6850037325166 | .2....'.....72Qf
    6302869e00f67323 663302465d00f643 | c.....s#f3.F]..C
    0a662302864c0006 9d00000066430246 | .f#..L......fC.F
    7100665302c68300 c69800000c922793 | q.fS..........'.
    02067a0037320866 7302c68000869300 | ..z.72.fs.......
    6693024678000cb2 279302466d00468f | f..Fx...'..Fm.F.
    001c32279302c639 0037322866b30286 | ..2'...9.72(f...
    40001c0237320a0c f2279302062e0006 | @...72...'......
    87001c1227930246 42001c2227930246 | ....'..FB.."'..F
    590046820022a0d1 27132c37320922a0 | Y.F.."..'.,72.".
    d0271318c67d0000 22a0d22793028625 | .'...}.."..'...%
    0022a0d327930286 96054678000c1dcc | ."..'.....Fx....
    1f86600506740000 668f024661050671 | ..`..t..f..Fa..q
    00000174ffc00000 eaed9c12866d0000 | ...t.........m..
    202c410171ffc000 0056921ad2ddf0d0 |  ,A.q....V......
    2ec08c4d2030f456 53fedaf2e138ff06 | ...M 0.VS....8..
    040000002020f501 69ffc00000565218 | ....  ..i....VR.
    e0ddc0d02fc0d73e eadae20604000000 | ..../..>........
    202c410161ffc000 00569216d2ddf0d0 |  ,A.a....V......
    2ec056adfec65700 0c0ed2a0c0268f02 | ..V...W......&..
    4658008666050000 66bf02866405063b | FX..f...f...d..;
    0066bf02864305c6 4e000c1d26bf0246 | .f...C..N...&..F
    4d00384c2124ff0c 0ed2a0c227130286 | M.8L!$......'...
    4c00463f050c1466 bf12384c211eff0c | L.F?...f..8L!...
    0ed2a0c227130286 4600c63e05dd0446 | ....'...F..>...F
    410000002119ff0c 0e320200d2a0c6e7 | A...!....2......
    9302c63f00382cd8 52f2cff0f033c022 | ...?.8,.R....3."
    a0c030d29332cc18 22a0ef460200ea43 | ..0..2.."..F...C
    4204001bee402230 f72ef2520c05620c | B....@"0...R..b.
    04420c0680551132 0c07605520004411 | .B...U.2..`U .D.
    5044208033014033 203022c032a0c10c | PD .3.@3 0".2...
    0e20d393462b0000 2100ffd2a0c63202 | . ..F+..!.....2.
    001633093832d2a0 c856b308324200d8 | ..3.82...V..2B..
    52c620001c82279f 024624050c0e0c1d | R. ...'..F$.....
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    d2a0c08617000000 66bf024626050611 | ........f..F&...
    0041eafef2cff078 04cc37d2a0c6fc6f | .A.....x..7....o
    31e8fed2a0c96803 f7362cf02014d2a0 | 1.....h..6,. ...
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    052a572086c0f732 ef59048903461005 | .*W ...2.Y...F..
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    a000d2a0ffd02074 057401e02074c573 | ...... t.t.. t.s
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Traceback (most recent call last):
  File "/usr/local/bin/esptool.py", line 2853, in <module>
    _main()
  File "/usr/local/bin/esptool.py", line 2846, in _main
    main()
  File "/usr/local/bin/esptool.py", line 2571, in main
    esp = esp.run_stub()
  File "/usr/local/bin/esptool.py", line 579, in run_stub
    self.mem_block(stub[field][from_offs:to_offs], seq)
  File "/usr/local/bin/esptool.py", line 492, in mem_block
    self.checksum(data))
  File "/usr/local/bin/esptool.py", line 340, in check_command
    val, data = self.command(op, data, chk, timeout=timeout)
  File "/usr/local/bin/esptool.py", line 308, in command
    self.write(pkt)
  File "/usr/local/bin/esptool.py", line 271, in write
    self._port.write(buf)
  File "/Library/Python/2.7/site-packages/serial/serialposix.py", line 552, in write
    raise writeTimeoutError
serial.serialutil.SerialTimeoutException: Write timeout

projectgus · 2018-10-25T22:52:08Z

Hi @RockfordWei ,

This looks like a different issue again, maybe something with the USB to Serial driver on your Mac. WriteTimeoutError means that the adapter hasn't allowed serial data to be written to it for longer than the timeout period (10 seconds). This basically never happens under normal conditions, the problem is either the OS-level driver is buggy or there's some problem with the USB connection to the device.

Angus

ice2hu · 2018-11-27T08:54:49Z

what's wrong with this?

esptool.py --port /dev/tty.usbserial-00000000 --baud 74880 --trace read_mac

will cause this:
_TRACE +0.055 command op=0x08 data len=36 wait_response=1 timeout=0.100 data=
0707122055555555 5555555555555555 | ... UUUUUUUUUUUU
5555555555555555 5555555555555555 | UUUUUUUUUUUUUUUU
55555555 | UUUU
TRACE +0.000 Write 46 bytes:
c000082400000000 0007071220555555 | ...$........ UUU
5555555555555555 5555555555555555 | UUUUUUUUUUUUUUUU
5555555555555555 5555555555c0 | UUUUUUUUUUUUU.
TRACE +0.007 Read 1 bytes: 08
TRACE +0.000 Read invalid data: 08
TRACE +0.000 Remaining data in serial buffer:
_TRACE +0.056 command op=0x08 data len=36 wait_response=1 timeout=0.100 data=
0707122055555555 5555555555555555 | ... UUUUUUUUUUUU
5555555555555555 5555555555555555 | UUUUUUUUUUUUUUUU
55555555 | UUUU
TRACE +0.001 Write 46 bytes:
c000082400000000 0007071220555555 | ...$........ UUU
5555555555555555 5555555555555555 | UUUUUUUUUUUUUUUU
5555555555555555 5555555555c0 | UUUUUUUUUUUUU.
TRACE +0.008 Read 1 bytes: 28
TRACE +0.000 Read invalid data: 28
TRACE +0.000 Remaining data in serial buffer:
_TRACE +0.055 command op=0x08 data len=36 wait_response=1 timeout=0.100 data=
0707122055555555 5555555555555555 | ... UUUUUUUUUUUU
5555555555555555 5555555555555555 | UUUUUUUUUUUUUUUU
55555555 | UUUU
TRACE +0.001 Write 46 bytes:
c000082400000000 0007071220555555 | ...$........ UUU
5555555555555555 5555555555555555 | UUUUUUUUUUUUUUUU
5555555555555555 5555555555c0 | UUUUUUUUUUUUU.
TRACE +0.008 Read 1 bytes: 28
TRACE +0.000 Read invalid data: 28
TRACE +0.000 Remaining data in serial buffer:
_TRACE +0.055 command op=0x08 data len=36 wait_response=1 timeout=0.100 data=
0707122055555555 5555555555555555 | ... UUUUUUUUUUUU
5555555555555555 5555555555555555 | UUUUUUUUUUUUUUUU
55555555 | UUUU
TRACE +0.001 Write 46 bytes:
c000082400000000 0007071220555555 | ...$........ UUU
5555555555555555 5555555555555555 | UUUUUUUUUUUUUUUU
5555555555555555 5555555555c0 | UUUUUUUUUUUUU.
TRACE +0.008 Read 1 bytes: 08
TRACE +0.000 Read invalid data: 08
TRACE +0.000 Remaining data in serial buffer:
_

A fatal error occurred: Failed to connect to Espressif device: Invalid head of packet (0x08)

alesrebec · 2018-11-27T09:03:11Z

The error says it failed to connect to Espressif device: Invalid head of packet.

Two things look weird in your esptool.py call:
esptool.py --port /dev/tty.usbserial-00000000 --baud 74880 --trace read_mac

Check if the device name is valid and baud rate which looks wrong.

projectgus · 2018-11-30T00:08:29Z

@ice2hu Possibly also the device is not in the correct boot mode. Check the wiki at https://github.com/espressif/esptool/wiki/ESP8266-Boot-Mode-Selection about entering bootloader mode.

I'm going to close this issue because the original reporter never provided any follow-up details, and the other traces posted here do not seem to be the same.

Everyone: If you're having trouble connecting to your ESP8266 or ESP32, please check the troubleshooting list here. If it still doesn't work, and you can't find a 100% exact match for your situation in the open issues, then please open a new issue and provide all of the details asked for in the issue template. Thanks!

gbourdon1 · 2019-11-17T20:58:41Z

I'm also having a similar issue, except I don't receive any TRACE messages. It simply says

C:\Users\gbourdon1>esptool.py --port COM9 --before no_reset --baud 115200 write_flash 0 NINA_W102-1.5.0.bin
esptool.py v2.8
Serial port COM9
Connecting......................................_____

A fatal error occurred: Failed to connect to Espressif device: Invalid head of packet (0x08)

I tried lowering the baud rate, which lead me to this error: A fatal error occurred: Failed to connect to Espressif device: Timed out waiting for packet header

Any thoughts on how to debug?

onpagecorp · 2020-02-02T09:07:49Z

try the following:

disconnect from USB
press and hold RESET button
connect USB
release RESET button now
try to burn now

Bernd58 · 2020-05-15T09:27:49Z

Hi All! This is my first comment here because I started with ESP8266 4 weeks ago. Today I used first a FTDI adapter with CH340G chip. While trying programming ESP-01 with Tasmota via esptool.py I got the same error:
"Failed to connect to Espressif device: Timed out waiting for packet header".
Solution to fix it: It is absolutely necessary to connect the "chip_enable" port to high level (3.3V).
Connect also RESET and GPIO0 to GND with 10k resistor each. Then it worked!!!

surrounds · 2020-08-13T09:16:38Z

I had same issue, algo that helped for me

disconnected from usb (or just power if you use external power)
press and hold RESET Button
connect usb (power)
release RESET button
wait 2 sec
Press and hold RESET button for 2 sec

Also you can try to use external power, I used Arduino 3.3V pin

hamedty · 2021-10-17T15:52:48Z

If you are looking at this thread in 2021, there is a bug filed for kernel 5.11 for CH340 driver. Roll back to 5.10.

https://bugzilla.kernel.org/show_bug.cgi?id=214131

riker09 · 2021-10-18T20:38:03Z

If you are looking at this thread in 2021, there is a bug filed for kernel 5.11 for CH340 driver. Roll back to 5.10.

https://bugzilla.kernel.org/show_bug.cgi?id=214131

Thank you so very much, I was ready to go out and purchase new hardware as I believed my ESPs were all faulty. Guess I temporarily switch distros and use an older kernel then.

projectgus closed this as completed Nov 30, 2018

github-actions bot changed the title ~~A fatal error occurred: Failed to connect to Espressif device: Timed out waiting for packet header~~ A fatal error occurred: Failed to connect to Espressif device: Timed out waiting for packet header (ESPTOOL-327) Oct 17, 2021

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A fatal error occurred: Failed to connect to Espressif device: Timed out waiting for packet header (ESPTOOL-327) #293

A fatal error occurred: Failed to connect to Espressif device: Timed out waiting for packet header (ESPTOOL-327) #293

JKTrowling commented Mar 31, 2018

projectgus commented Apr 2, 2018

doquen commented Apr 23, 2018

projectgus commented Apr 26, 2018

coffee-cup commented May 4, 2018

projectgus commented May 9, 2018

coffee-cup commented May 9, 2018

theproxy commented Jun 29, 2018

theproxy commented Jun 29, 2018

projectgus commented Jul 2, 2018

alesrebec commented Jul 12, 2018

backpacked commented Sep 14, 2018

backpacked commented Sep 14, 2018

RockfordWei commented Oct 1, 2018

projectgus commented Oct 25, 2018

ice2hu commented Nov 27, 2018

alesrebec commented Nov 27, 2018 •

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projectgus commented Nov 30, 2018

gbourdon1 commented Nov 17, 2019

onpagecorp commented Feb 2, 2020

Bernd58 commented May 15, 2020

surrounds commented Aug 13, 2020

hamedty commented Oct 17, 2021

riker09 commented Oct 18, 2021

A fatal error occurred: Failed to connect to Espressif device: Timed out waiting for packet header (ESPTOOL-327) #293

A fatal error occurred: Failed to connect to Espressif device: Timed out waiting for packet header (ESPTOOL-327) #293

Comments

JKTrowling commented Mar 31, 2018

Full esptool.py command line as run: ./esptool.py -p /dev/ttyS4 --trace erase_flash

Full output from esptool.py (please copy and paste all lines of output)

What is the expected behaviour?

Is there any other information you can think of which will help us reproduce this problem?

projectgus commented Apr 2, 2018

doquen commented Apr 23, 2018

projectgus commented Apr 26, 2018

coffee-cup commented May 4, 2018

projectgus commented May 9, 2018

coffee-cup commented May 9, 2018

theproxy commented Jun 29, 2018

theproxy commented Jun 29, 2018

projectgus commented Jul 2, 2018

alesrebec commented Jul 12, 2018

backpacked commented Sep 14, 2018

backpacked commented Sep 14, 2018

RockfordWei commented Oct 1, 2018

projectgus commented Oct 25, 2018

ice2hu commented Nov 27, 2018

alesrebec commented Nov 27, 2018 • edited Loading

projectgus commented Nov 30, 2018

gbourdon1 commented Nov 17, 2019

onpagecorp commented Feb 2, 2020

Bernd58 commented May 15, 2020

surrounds commented Aug 13, 2020

hamedty commented Oct 17, 2021

riker09 commented Oct 18, 2021

alesrebec commented Nov 27, 2018 •

edited

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