Hi, I am using 115200 baud rate (see photo 1). To send commands, using either TTL or RS232 works, but the problem is the response of the touch screen. When I use RS232, it works fine, but when I use TTL configuration, it doesn’t work.
One more thing, when I use P1 connector to select external power (see photo 2), the touch screen responds with 0x00, but when I use P1 to select USB, the response is “56 D5 D8 D7 FF F7 3B 17 97 FD 83 75 57 6D 1B” (button pressed) and “56 D5 D8 D7 FF F7 3B 17 97
FB 83 75 57 E5 1B” (cancel button). In both cases the return is incorrect, but the display gives me a different response depending on what input power is selected.
I tried two monitors here that showed the same problem. I tried to command with a microcontroller and had the same touch response, I could send a command but the touch response was 0x00.
Can you help me?