I am trying to install MIcroPython Firmware on my ESP8266-12E chip. I am using esptool.py
to flash the firmware. I have successfully uploaded the firmware esp8266-20170612-v1.9.1.bin
followed by a flash_erase. I have used following commands to flash the chip.
$ sudo esptool.py --port /dev/ttyUSB0 erase_flash
esptool.py v2.0.1
Connecting........_
Detecting chip type... ESP8266
Chip is ESP8266
Uploading stub...
Running stub...
Stub running...
Erasing flash (this may take a while)...
Chip erase completed successfully in 13.0s
Hard resetting...
$ sudo esptool.py --port /dev/ttyUSB0 write_flash --flash_mode qio --flash_size detect 0x0 esp8266-20170612-v1.9.1.bin --verify
esptool.py v2.0.1
Connecting....
Detecting chip type... ESP8266
Chip is ESP8266
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Auto-detected Flash size: 4MB
Flash params set to 0x0040
Compressed 598432 bytes to 390604...
Wrote 598432 bytes (390604 compressed) at 0x00000000 in 34.5 seconds (effective 138.8 kbit/s)...
Hash of data verified.
Leaving...
Verifying just-written flash...
(This option is deprecated, flash contents are now always read back after flashing.)
Flash params set to 0x0040
Verifying 0x921a0 (598432) bytes @ 0x00000000 in flash against esp8266-20170612-v1.9.1.bin...
-- verify OK (digest matched)
Hard resetting...
As you can see verification of flash process is OK
. And I can see a new wifi ssid on my wifi list.
Now when I am trying to access REPL via picocom
it is hanging on following:
picocom v1.7
port is : /dev/ttyUSB0
flowcontrol : none
baudrate is : 115200
parity is : none
databits are : 8
escape is : C-a
local echo is : no
noinit is : no
noreset is : no
nolock is : no
send_cmd is : sz -vv
receive_cmd is : rz -vv
imap is :
omap is :
emap is : crcrlf,delbs,
Terminal ready
I also tried screen
, putty
and minicom
same behaviour on them as well. Also encountered a strange behaviour that it is working perfectly via ESPlorer.
Is there anything that I am missing? Or any suggestion to hunt this situation?
Thanks