St7701 cached #35
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St7701 cached #35
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This adds a new subclass
ST7701Cachedthat uses a small cache in pico ram to drive the underlyingST7701class.This allows freeing up lots of lovely pico ram but with some disadvantages:
Due to the reduced memory use the normal Update where the display is updated behind the current scanline is no longer used, so if you run with a single back buffer then you will see some flicker. You can run with two back buffers then you do have the speed of the psram to deal with when keeping them in sync.
Some example code using it: https://github.com/AndrewCapon/presto-cached-examples