Hello all.
System:
KC868-A4 board with Nextion NX8048P050-011C-Y display.
Problem:
UART communication with this particular display. Other 2.4 inch Nextion works well.
Possibly issue with TTL level.
Electrical connection info:
RS323 chip (SP3232EEN) removed from the KC868-A4 board.
The RX and TX of Nextion are connected directly to GPIO_16 and GPIO_17 of ESP32.
We have tried to use other GPIO's of ESP32. Nothing works.
The solution which works:
Replacing ESP32-S with original ESP32-WROOVER.
Question:
1) Can anyone suggest a simplier solution?
2) Is there any way to force Nextion to operate on 3.3v TTL level?
3) Can we connect Nextion to RS232 connector directly without removing SP3232EEN?
System:
KC868-A4 board with Nextion NX8048P050-011C-Y display.
Problem:
UART communication with this particular display. Other 2.4 inch Nextion works well.
Possibly issue with TTL level.
Electrical connection info:
RS323 chip (SP3232EEN) removed from the KC868-A4 board.
The RX and TX of Nextion are connected directly to GPIO_16 and GPIO_17 of ESP32.
We have tried to use other GPIO's of ESP32. Nothing works.
The solution which works:
Replacing ESP32-S with original ESP32-WROOVER.
Question:
1) Can anyone suggest a simplier solution?
2) Is there any way to force Nextion to operate on 3.3v TTL level?
3) Can we connect Nextion to RS232 connector directly without removing SP3232EEN?