Reading from the LCD #58
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This PR is ready for review. Should we support reading back character data from the display? I don't really see a reason for doing so, but it would be trivial to implement |
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I'm working on the implementations for reading data from the display.
For now, I've only implemented it for blocking I2C.To do this, I splitDataBusinto two traits for reading and writing because depending on the pin configuration, reading may not be possible (and is not required for basic operation).Notable Changes
rwpin was added to 4/8-bit bus pin structs. Instead of a pin,WriteOnlyModecan be specified to opt-out of read features. This requires pulling the RW pin low on the display. This is a breaking change, but easy to adapt.DataBustrait was split into Read* and Write* traits.read_status