Raspberry Pi serial port

[blackie]

Hi!
I have a LaCorsse WS2350 weather station. It has a USB/serial adapter which reads a lot of wrong data.
Now, I bought a serial port for my Raspberry. I connected it, and configured cumulus to read data from /dev/ttyAMA0 port.
The TX LED on serial port is blinking, but Cumulus isn't showing any data.
In the latest MXdiags says:

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2017-08-30 10:00:07.121 WS2300: Attempting to open /dev/ttyAMA0
2017-08-30 10:00:07.168 COM port opened
2017-08-30 10:00:07.176 Start reading history data

The entire MXdiag is zipped and attached to this post.

[steve]

You'll need to turn on debug logging and data logging by editing Cumulus.ini (instructions are in one of the announcement posts) so that the diags file (hopefully) contains some information to help with your problem.

[blackie]

I attached the MX diags file.

[steve]

It's not getting any response from the station (assuming that's the correct serial port).

[blackie]

There's something wrong with the serial port (or it's settings). I tried to use the serial port with python, but it isn't getting any response.

I found an information, that I have to disable the serial console on Pi. Are there any settings to set on Pi?

[ConligWX]

can you post the ouput of this command:

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dmesg | grep tty

[blackie]

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[    0.001322] console [tty1] enabled
[    0.135559] 20201000.uart: ttyAMA0 at MMIO 0x20201000 (irq = 83, base_baud = 0) is a PL011 rev2

[steve]

You say that you've added a serial port, but that looks like the Pi's built in UART.

[ConligWX]

I think the "USB/Serial adapter" maybe the wrong terminology.

the LaCorsse WS2350 comes with a Serial plug cable from what I gather. which should plug directly into the raspi's serial port (just guessing)

Perhaps the baud rate needs to be set on the raspi's serial port?

[blackie]

I found, what was wrong! My RS232 adapter has a wrong chip!

It must to have a MAX3232 chip!

Anyway, thanks for your answers!