use PL011 UART and log on to linux over wifi simultaneously

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garberw
 
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use PL011 UART and log on to linux over wifi simultaneously

Post by garberw »

Here is what I am trying to do: log on to linux running on a raspberry pi zero 2 W. But I also want to use the "real" UART PL011 (NOT the mini uart) for RS485. On the arduino I had used previously I could use SoftwareSerial to get an extra serial port which worked reliably. I have to run the UART at 9600 baud 8 bit no parity 1 stop bit CRC. I suppose if the mini uart worked okay that would be acceptable but worse. The biggest problem is I keep reading "The bluetooth/wireless module is disabled when you enable the PL011" but no one says if the wifi specifically is disabled. I would try it but I am not sure how. I found https://github.com/raspberrypi/document ... /uart.adoc. Also if the linux console was on the PL011 (pins GPIO14,GPIO15) could even log on at all or even brick the darn thing?

Is there some standard documentation I have not found yet? recommendation? thanx.

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garberw
 
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Re: use PL011 UART and log on to linux over wifi simultaneou

Post by garberw »

I have no interest in bluetooth but wifi is very important to me please!!!!

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garberw
 
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Re: use PL011 UART and log on to linux over wifi simultaneou

Post by garberw »

I tried it. Just do raspi-config then choose "interface" and "serial ports" and select "output shell messages on serial port = NO" and "use hardware serial port = YES".
Has no effect on logging on by wifi. Supposedly bluetooth should be blocked. Can still use usb keyboard and mouse. Can still ssh login over wifi.

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adafruit_support_mike
 
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Re: use PL011 UART and log on to linux over wifi simultaneou

Post by adafruit_support_mike »

The RasPi's WIFI is independent of the BLE radio. You can use WiFi while the Serial connection to the BLE radio is disabled.

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