Just bought a new Raspberry Pi 3 with WIFI and Bluetooth? Using it in a project with serial? Happy?
Well, you might not be so happy when you find out what I just found out. I had my Node-Red project that has been controlling the house for around 18 months on a Pi2 and I was starting to have issues – I thought it time to upgrade. So I made a new installation, faithfully copied everything over, plugged in the board… everything was fine.
Except it wasn’t – nothing was coming out of the serial port. Well, it turns out they stole the serial port for the Bluetooth. There is a second port – of a kind – which can be set to work with the GPIO pins 14 and 15… but Node-Red serial node was NOT having it – I put a scope on the output – nothing. I followed instructions to use an alternative “serial port” – which appeared and – the Node-Red Serial port input would not recognise it.
Anyway, it isn’t all bad – thanks to Dave at IBM who put me onto this link…
Ignore most of the content and head to the end – Answer number FIVE. This got me back up and running with a high speed serial port – but – no Bluetooth of course. I’m assuming I can just stick in a Bluetooth dongle – time will tell.
Essentially assuming an up to date Pi3, the key line is the one where you add
to the /boot/config.txt file.
I’m liking FriendlyArm more and more (I’d like them even MORE if they’d put more RAM in their boards) but at least, for today, I’m up and running.