Baud issues

[JYunusov]

Hi, I am currently trying to upload .tft file to nextion display using raspberrypi zero through serial. But I get an error:

Any help will be appreciated, thanks!

pi@raspberrypi:~ $ nextion-fw-upload /dev/ttyS0 hello.tft
2022-02-11 14:29:31,833 INFO nextion.nextion.client Connecting: /dev/ttyS0, baud: 2400
2022-02-11 14:29:31,841 INFO nextion.nextion.protocol.base Connected to serial
2022-02-11 14:29:33,646 WARNING nextion.nextion.client No valid reply on 2400 baud. Closing connection
2022-02-11 14:29:33,651 ERROR nextion.nextion.protocol.base Connection lost
2022-02-11 14:29:33,656 WARNING nextion.nextion.client Baud 2400 did not work
2022-02-11 14:29:33,660 INFO nextion.nextion.client Connecting: /dev/ttyS0, baud: 4800
2022-02-11 14:29:33,667 INFO nextion.nextion.protocol.base Connected to serial
2022-02-11 14:29:34,645 WARNING nextion.nextion.client No valid reply on 4800 baud. Closing connection
2022-02-11 14:29:34,649 ERROR nextion.nextion.protocol.base Connection lost
2022-02-11 14:29:34,654 WARNING nextion.nextion.client Baud 4800 did not work
2022-02-11 14:29:34,657 INFO nextion.nextion.client Connecting: /dev/ttyS0, baud: 9600
2022-02-11 14:29:34,664 INFO nextion.nextion.protocol.base Connected to serial
2022-02-11 14:29:34,933 INFO nextion.nextion.client Address: 30611
2022-02-11 14:29:34,936 INFO nextion.nextion.client Detected model: NX4024T032_011R
2022-02-11 14:29:34,939 INFO nextion.nextion.client Firmware version: 78
2022-02-11 14:29:34,942 INFO nextion.nextion.client Serial number: DE602478A74A6831
2022-02-11 14:29:34,945 INFO nextion.nextion.client Flash size: 4194304
2022-02-11 14:29:34,999 INFO nextion.nextion.client Successfully connected to the device
2022-02-11 14:29:35,001 INFO nextion.nextion.client About to upload 168299 bytes
2022-02-11 14:29:35,193 WARNING nextion.nextion.client Additional sleep configuration failed: Variable name invalid for command: usup=1
2022-02-11 14:29:35,197 INFO nextion.nextion.client Reconnecting at new baud rate: 115200
2022-02-11 14:29:35,251 ERROR nextion.nextion.protocol.base Connection lost
2022-02-11 14:29:35,259 INFO nextion.nextion.protocol.base Connected to serial
2022-02-11 14:29:35,631 INFO nextion.nextion.client Device is ready to accept upload
2022-02-11 14:29:41,764 ERROR root Failed to upload firmware
Traceback (most recent call last):
File "/home/pi/.local/lib/python3.9/site-packages/nextion/protocol/base.py", line 37, in read
return await self.queue.get()
File "/usr/lib/python3.9/asyncio/queues.py", line 166, in get
await getter
asyncio.exceptions.CancelledError

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/lib/python3.9/asyncio/tasks.py", line 492, in wait_for
fut.result()
asyncio.exceptions.CancelledError

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/home/pi/.local/lib/python3.9/site-packages/nextion/console_scripts/upload_firmware.py", line 14, in upload
await nextion.upload_firmware(args.file, args.upload_baud)
File "/home/pi/.local/lib/python3.9/site-packages/nextion/client.py", line 394, in upload_firmware
res = await self.read_packet(timeout=timeout)
File "/home/pi/.local/lib/python3.9/site-packages/nextion/client.py", line 221, in read_packet
return await asyncio.wait_for(self._connection.read(), timeout=timeout)
File "/usr/lib/python3.9/asyncio/tasks.py", line 494, in wait_for
raise exceptions.TimeoutError() from exc
asyncio.exceptions.TimeoutError

[yozik04]

A solution to that is very welcome =)
This tft upload is kinda like a demo. I've managed to upload it once on my device and have not tried anymore.
Nextion does not share documentation how to upload tft (at least when I looked for it some years ago)

[EyitopeIO]

Nextion upload protocol documented here last year: https://itead.cc/nextion/nextion-hmi-upload-protocol/

[yozik04]

Want to make a pull request? 😉