Flashing and Logging

Flashing

Connect the device to PC, if using virtual machine, please map the serial port to the virtual machine

tip

For Linux / Mac users, you need to enable serial port usage permissions, execute command

sudo usermod -aG dialout $USER

and restart the system

Flash the firmware using command tos.py flash, and select the flashing port

If there are multiple serial ports, you can try them one by one

❯ tos.py flash
[INFO]: Run Tuya Uart Tool.
[INFO]: Use default baudrate: [921600]
[INFO]: Use default start address: [0x00]
--------------------
1. /dev/ttyACM1
2. /dev/ttyACM0
--------------------
Select serial port: 2
[INFO]: Waiting Reset ...
[INFO]: unprotect flash OK.
[INFO]: sync baudrate 921600 success
Erasing: ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 100% 5 bytes/s   0:00:07 / 0:00:00
[INFO]: Erase flash success
Writing: ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╸ 100% 12 bytes/s ⠸ 0:00:38 / 0:00:01
[INFO]: Write flash success
[INFO]: CRC check success
[INFO]: Reboot done
[INFO]: Flash write success.

If you see Port [xxx] may be busy prompt

You can wait for about 1 minute and try again

For different virtual machines and serial port chips, the mapping process takes different time

Logging

View logs using command tos.py monitor, and select the log port

If you want to view complete logs, you can manually reset the device after the command

❯ tos.py monitor
[INFO]: Run Tuya Uart Tool.
--------------------
1. /dev/ttyACM1
2. /dev/ttyACM0
--------------------
Select serial port: 1
[INFO]: Open Monitor. (Quit: Ctrl+c)
[01-01 00:03:25 ty D][tuya_health.c:75] feed watchdog
[01-01 00:03:35 ty D][tuya_health.c:75] feed watchdog
[01-01 00:03:45 ty D][tuya_health.c:75] feed watchdog
[01-01 00:03:55 ty D][tuya_health.c:75] feed watchdog

Exit log viewing by pressing Ctrl+c, then press Enter

^C[INFO]: Press "Entry" ...

[INFO]: Monitor exit.

Common Issues

1. Flashing fails

   Refer to Install the corresponding driver.