Very Simple CircuitPython Driver for Generic 64Mb SPI PSRAM

I really like this PSRAM chip from Adafruit. It behaves very much like SRAM, but with a much higher capacity and an SPI interface, which is so much nicer to deal with than more address lines than I can count. Hauling that much data back and forth with (Circuit/Micro)Python over a microcontroller SPI interface isn’t fast, but having that much capacity at your disposal makes it really useful.

I wrote a MicroPython driver for it a little while ago and have put together a CircuitPython version. I’ve tested it with CircuitPython 6.2, 6.3, and 7.0.0-alpha.3, and it seems to work pretty well.

You can find the driver and an example program for it at:

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