RTC when gpio pins 1-10 occupied?
Posted: Fri Jun 05, 2020 11:07 am
by JMK8
I have a Pi4 with a Razberry installed on the gpio header. The Razberry occupies gpio pins 1 through 10. I would like to include a RTC - is there any way I can get a RTC installed where pins 1-10 are not available
Re: RTC when gpio pins 1-10 occupied?
Posted: Fri Jun 05, 2020 1:09 pm
by thagrol
The 4B has multiple I2C buses. See /boot/overlays/README for how to enable them.
There are also numerous products available to provide multiple parallel sets of GPIO headers on one Pi.
Lastly, judging by the website for the RaZberry there is an unpopulated set of pins next to the GPIO connector. If those are connected it may be possible to solder on a header and use them. Ask the manufacturer about that.
Re: RTC when gpio pins 1-10 occupied?
Posted: Fri Jun 05, 2020 3:35 pm
by JMK8
Thanks for that, it gives me something to work on and a reason to try and understand device tree
