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5 commits

Author SHA1 Message Date
1688bb868e fw-rust: Add symbols and screens
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Add several symbols and a symbol table in an ascii order. Add the
`print()` and `print_inverted()` functions to be able to draw strings,
"black on white" as well as "white on black" onto the display. Add a
`HomeScreen` which also saves the state of which selection is
active. To save the screen state and also make it accessible globally
use a `RefCell` contained in a `Mutex`.

Also update the build dependencies.
2022-03-14 22:54:07 +01:00
518f113cc0 fw-rust: Use avr-eeprom create to read from EEPROM
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Use the `avr-eeprom` crate when reading from EEPROM.
2022-03-12 17:20:53 +01:00
8b9d21a012 fw-rust: Start to use the avr-eeprom crate
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Start to use the avr-eeprom crate to handle values residing inside the
EEPROM.
2022-03-08 19:05:40 +01:00
aa59bc302d fw-rust: Create a PWM signal for the backlight
To have a dimmable backlight, generate a variable duty-cycle PWM
signal which is consumed by the backlight driver circuit.
2022-03-06 19:20:49 +01:00
aa75712418 fw-rust: Minimal hello world 2022-03-06 19:20:49 +01:00