WinterHill on a 1GB RPi4.
Posted: Sat Oct 22, 2022 3:53 pm
A question was asked at CAT22 earlier about the ram requirements for WinterHill.
I have only a 2GB RPi4, so I wrote a small program to waste 1GB of ram, to simulate a 1GB model. It looks like a 1GB RPi4 will be fine for WinterHill. When displaying on the RPi4, the amount of ram used may increase for higher video resolutions, but then it will probably also have cpu resource problems. Perhaps someone could try it.
Each PIC is serviced by an enhanced SPI port on the RPi and only the RPi4 has two of these. I'm looking into the possibility of connecting the two SPI buses together, so that other RPi versions with a single enhanced SPI port could be used, in a non local display mode. The maximum throughput will be lower, but probably enough for QO-100.
Brian
AnyHub mode streaming 4 beacons. No local display on the RPi4. 600MB ram free.
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Local mode. 360MB ram free.
I have only a 2GB RPi4, so I wrote a small program to waste 1GB of ram, to simulate a 1GB model. It looks like a 1GB RPi4 will be fine for WinterHill. When displaying on the RPi4, the amount of ram used may increase for higher video resolutions, but then it will probably also have cpu resource problems. Perhaps someone could try it.
Each PIC is serviced by an enhanced SPI port on the RPi and only the RPi4 has two of these. I'm looking into the possibility of connecting the two SPI buses together, so that other RPi versions with a single enhanced SPI port could be used, in a non local display mode. The maximum throughput will be lower, but probably enough for QO-100.
Brian
AnyHub mode streaming 4 beacons. No local display on the RPi4. 600MB ram free.
- z304.png (271.21 KiB) Viewed 3223 times
Local mode. 360MB ram free.
- z208.png (805.25 KiB) Viewed 3223 times