The terminal shows the following messages:
Code: Select all
wdt reset
load 0x4010f000, len 1384, room 16
tail 8
chksum 0x2d
csum 0x2d
vbc204a9b
~ld
�U73 : Info :
INIT : Booting version: Skrzypowa: Dec 9 2019 11:20:48 (ESP82xx Core bc204a9b, NONOS SDK 2.2.2-dev(38a443e))
74 : Info : INIT : Free RAM:33216
75 : Info : INIT : Warm boot #1 Last Task: Task Device timer, id: 8 - Restart Reason: Hardware Watchdog
77 : Info : FS : Mounting...
102 : Info : FS : Mount successful, used 82328 bytes of 957314
118 : Info : CRC : No program memory checksum found.
ets Jan 8 2013,rst cause:4, boot mode:(3,7)
wdt reset
load 0x4010f000, len 1384, room 16
tail 8
chksum 0x2d
csum 0x2d
vbc204a9b
~ld
�U73 : Info :
INIT : Booting version: Skrzypowa: Dec 9 2019 11:20:48 (ESP82xx Core bc204a9b, NONOS SDK 2.2.2-dev(38a443e))
74 : Info : INIT : Free RAM:33216
75 : Info : INIT : Warm boot #2 Last Task: Task Device timer, id: 8 - Restart Reason: Hardware Watchdog
77 : Info : FS : Mounting...
102 : Info : FS : Mount successful, used 82328 bytes of 957314
119 : Info : CRC : No program memory checksum found.
ets Jan 8 2013,rst cause:4, boot mode:(3,7)
wdt reset
load 0x4010f000, len 1384, room 16
tail 8
chksum 0x2d
csum 0x2d
vbc204a9b
~ld
�U72 : Info :
INIT : Booting version: Skrzypowa: Dec 9 2019 11:20:48 (ESP82xx Core bc204a9b, NONOS SDK 2.2.2-dev(38a443e))
73 : Info : INIT : Free RAM:33216
75 : Info : INIT : Warm boot #3 Last Task: Task Device timer, id: 8 - Restart Reason: Hardware Watchdog
77 : Info : FS : Mounting...
102 : Info : FS : Mount successful, used 82328 bytes of 957314
118 : Info : CRC : No program memory checksum found.
ets Jan 8 2013,rst cause:4, boot mode:(3,7)
However, I can't program an "empty" FW, esptool.py shows as below.
Code: Select all
[root@Piotr ESP]# esptool.py --baud 115200 --port /dev/ttyUSB1 write_flash 0x00000 /home/maciek/TMP/blank_4MB.bin
esptool.py v3.2
Serial port /dev/ttyUSB1
Connecting......................................
A fatal error occurred: Failed to connect to Espressif device: No serial data received.
For troubleshooting steps visit: https://github.com/espressif/esptool#troubleshooting
Can I save this ESP somehow or will I have to soldering everything from scratch?
Any idea to solve the problem?
EDIT:
Shorting TX and RX does not helps too