Hello All, first of all godd job with this kind of display the life is easier... I'm the owner of IM150416004.
I have small issues with the serial.
First of all I can't upgrage hmi file.
I go through a Keyspan USB/RS232 adapter and nextion is not recognized if i want to update wtih nextion editor. Port is set and scan for several speed and connect failed message.
I have a second issue : my adapter is working properly as I can get data out from the nextion... but here is a capture of the data out
Moreover I can't send command as an example page 0 0xff 0xff 0xff is not working at all, neither rest 0xff 0xff0xff
Could you help?
Can you provide your HMI and code you are working with that gives these results?
I can not think of anything in the Nextion Instruction set that would give these results other than user initiated print or printh commands - in which case it would be as intended and not an error.
Please inform of which MCU used when you submit your code and HMI
Which Keyspan USB/RS232 are you using?
There is nothing in your HMI that is sending our print or printh statements
This puts the onus on your Keyspan and how the Termite software is interpreting data properly.
The Keyspan USA-19HS is a software implementation of a serial driver via USB
I believe at higher than 9600 baud, more communications issues (missing bits) occurs.
This is apparent in their documentation.
Your HMI was tested and Keypad.b11 returns
0x65 0x01 0x15 0x01 0xFF 0xFF 0xFF as expected.
Keys also send out exactly as expected.
It may be possible to run at a lower baud of 9600 or lower
or a USB to TTL with Prolific chipset may be a better solution
Itead also sells a foca adapter in their store