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DRIVERS.md minor update.

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Peter Hinch 2020-12-20 17:20:37 +00:00
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@ -266,7 +266,9 @@ def spi_init(spi):
The ILI9341 class uses 4-bit color to conserve RAM. Even with this adaptation The ILI9341 class uses 4-bit color to conserve RAM. Even with this adaptation
the buffer size is 37.5KiB. See [Color handling](./DRIVERS.md#11-color-handling) the buffer size is 37.5KiB. See [Color handling](./DRIVERS.md#11-color-handling)
for details of the implications of 4-bit color. for details of the implications of 4-bit color. On a Pyboard 1.1 the `scale.py`
demo ran with 34.5K free with no modules frozen, and with 47K free with `gui`
and contents frozen.
The driver uses the `micropython.viper` decorator. If your platform does not The driver uses the `micropython.viper` decorator. If your platform does not
support this, comment it out and remove the type annotations. You may be able support this, comment it out and remove the type annotations. You may be able
@ -298,6 +300,8 @@ even the normally conservative Adafruit
and [rdagger](https://github.com/rdagger/micropython-ili9341/blob/master/demo_fonts.py) and [rdagger](https://github.com/rdagger/micropython-ili9341/blob/master/demo_fonts.py)
uses 40MHz. I have successfully run my display at 40MHz. My engineering uses 40MHz. I have successfully run my display at 40MHz. My engineering
training makes me baulk at exceeding datasheet limits but the choice is yours. training makes me baulk at exceeding datasheet limits but the choice is yours.
I raised [this isse](https://github.com/adafruit/Adafruit_CircuitPython_ILI9341/issues/24).
The response may be of interest.
###### [Contents](./DRIVERS.md#contents) ###### [Contents](./DRIVERS.md#contents)