UART0 COM1 transmission issue

userHead madur 2018-03-21 17:26:55 1508 Views2 Replies
We are using LP as user interface for our device (gas analyser). LP communicates with the rest of the device via UART0 (pin 5 and 7). Settings are: 115200 E 8 1, 20 bytes

We've noticed recurring, but not permanent, transmission problems, to be more specific with timing. Sometimes transmission is perfectly OK, like in old-school PCs - order generated by our program is transmitted in one package like this:
Nowy Dokument 2018-03-21_2.jpg Nowy Dokument 2018-03-21_2.jpg (251.7 KiB) Viewed 1278 times Unfortunately, also happens, and quite often, that the same order has a gap during transmission, that is recognized by our device as the end of transmission, and therefore we receive communication errors:
Nowy Dokument 2018-03-21_3.jpg Nowy Dokument 2018-03-21_3.jpg (504.16 KiB) Viewed 1278 times
Questions are:

1. Has anyone noticed this problem?
2. Is it in fact LP issue, or we are doing something wrong?
3. What can we do to overcome this problem? Maybe it is an driver issue, BIOS setting or whatever else...