ashoooh asked 5 years ago
Hello Rui,
I have an issue with my Esp8266 LOLIN V3 with ch340g driver, I can’t make it work anyway
I try all available solutions but not working.
with the nodemcu flasher, it stoped as below
Command: esptool.py –port COM10 –baud 9600 –after no_reset write_flash –flash_mode dio 0x00000 G:\esp\nodemcu-master-15-modules-2019-11-19-12-39-46-float.bin
esptool.py v2.6
Serial port COM10
Connecting….
Detecting chip type… ESP8266
Chip is ESP8266EX
Features: WiFi
MAC: 84:0d:8e:8c:8c:9a
Uploading stub…
and with the ESPlorer as well I got a message after connecting
Can’t autodetect firmware, because proper answer not received (may be unknown firmware).
Please, reset module or continue.
¦8—ظXH¬8ّ¤tx¨CEh¬نz¶ّرYh¼ّ2dO,4`lLصKے$¼` z<ةù´txW™¤¨à´`´ًّXKأYّ0$nµ´`,lشط4C$èًطةMù´ّxWA¬à´h4ًّxKhYّبHQA¸>dIحّ‡8,4ح¨,|ù
I don’t know is it a hardware issue so my chip is already useless or there is a solution you think it could help.
Sara Santos Staff answered 5 years ago
Hi.
Your board is not damaged. You can always flash a new firmware to make it work (for example, if you upload an Arduino sketch, it will automatically run that firmware).
It looks like your firmware was flashed correctly, but sometimes, when your board restarts it prints that message “Can’t autodetect firmware, because proper answer not received (may be unknown firmware).”, the firmware it’s still there, but it couldn’t be autodetected on boot.
Sometimes the process is too fast for the ESPLORER to detect automatically. Restarting the board usually solves the problem.
Regards,
Sara
ashoooh answered 5 years ago
Hello Sara,
I try all other applications to flush the board, and all failed; the Arduino IDE uploads the code, but after restarting, it keeps print words as I had mentioned, and my code never executed.
I even upload an empty skitch with only serial print, “hello,” and nothing happens also it uploads the code, and the upload percentage is 100%
I even try to upload or flush from my Mac or PC with even different OS and still nothing.
ashoooh answered 5 years ago
As you see below from my mac, it didn’t connect at all
I try to check if the chip itself has power or not and it connected as expected, by the way, I have two boards and both acting same way but one of them, the one that connected in the below
screen, is not even connected to anything, and when pressing the reset button the built-in led not turned on
the other one the led comes turned on when pressing rest button and uploading code from Arduino IDE but after uploading done nothing happens
Sara Santos Staff answered 5 years ago
Hi again.
After uploading the code that prints “Hello” in the serial monitor, please check that you have the same baud rate in the sketch and in the serial monitor.
When you are using the ESPLORER, you need to make sure that your boards has the firmware flashed.
I don’t understand why you’re having that issue. I’ve found this discussion, can you take a look and see if it helps in some way https://github.com/esp8266/Arduino/issues/1074
Also, can you show a photo of your board?
Regards,
Sara