pyserial char by char io

[DeaD_EyE]

read(1) also blocks waiting for \n.

read(1) blocks until one byte is in the buffer. It doesn't matter which char.

I use pyserial to read data from a radar transceiver. If there is a bug in pyserial,
I won't get usable data. Pyserial works fine with ftdi.

Maybe it's a hardware issue? Have you tried another serial port?
Maybe you try out a usb2tty from ftdi. They have also a python module,
which has a better performance and gives you the ability for bit banging.