[Question]Help! no response via UART port 4 when pressing the touch button

luoyangdwin1

Uart2, the default baud rate is 115200. Please check whether there is a problem with the wiring and whether the level signal matches. The problem is that uart2 and PC are not communicating

Klerik88

luoyangdwin1 发表于 2023-2-16 08:26
Uart2, the default baud rate is 115200. Please check whether there is a problem with the wiring and  ...

Hi. Everything works through UART2, the speed is 115200, but only for reception. Through UART2, I can send commands to the display, they are received, and the values change on the display, but the display does not transmit anything back. And so it is with all other UART ports. The answer can be received only through the built-in USB->UART1 converter on the display board, but as I understand from the documentation, this port is intended only for debugging. Through it, the display responds to commands sent to it, but does not send a response to pressing the sensor. Upon detailed analysis of the program With 51, it was believed that the function of sending Uatr_Send_Data(VP,TP_Data_Return,(TP_Data_Return[2]+3) does not work, This is the program that you previously sent for download.
EKT040A_OS源码.zip

luoyangdwin1

I have tested the software and there is no problem.