Hi, I encounter issues when I connect my device to ttyAMA10 (debug UART), sometimes it connects, but usually it is not. Even when it connects communication is bugged and many packets are lost. But it works flawlessly if I connect it via ch340g USB to serial adapter. In both cases I use the same serial settings.
Echo to ttyAMA10 works just fine, even with bursts of couple of kB there are no errors in received text.
Why could it happen and how to fix it? Could communication protocol trigger some debug functions of this port?
Another UART on pin header is already occupied, I can not use it for this purpose. Sure I could use a USB adapter but I need my setup to be in enclosure, so with a USB dongle I should design a bigger one.
Echo to ttyAMA10 works just fine, even with bursts of couple of kB there are no errors in received text.
Why could it happen and how to fix it? Could communication protocol trigger some debug functions of this port?
Another UART on pin header is already occupied, I can not use it for this purpose. Sure I could use a USB adapter but I need my setup to be in enclosure, so with a USB dongle I should design a bigger one.
Statistics: Posted by Serial Griller — Thu Feb 26, 2026 1:23 am