Add Hd44780i2c driver #173
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This was referenced Jul 29, 2020
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Hi @alankrantas thank you very much for this contribution. Now squashing/merging. |
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This is for the I2C version of HD44780 LCDs.
The driver is based on some C++/MicroPython drivers and I did try to match the existing HD44780 driver, however the control methods are a bit different (for example, there is no buffer; everything takes effect immediately).
Tested on Arduino Uno/Nano 33 IoT, micro:bit and Adafruit M4 Metro (although the Metro didn't like me to draw 5V power from its pin; only my 3.3V copy worked on it) with both 16x2 and 20x4 versions.