634dcc7387
lcd_hd44780: Only calibrate cmd_wait_ticks on mcus with strict timing
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The calibration isn't valid on the linux mcu, so make it dependent on
CONFIG_HAVE_STRICT_TIMING.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2020-05-31 14:57:06 -04:00
43dfb3c9ad
lcd_hd44780: Minor change to timing delays
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Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2019-11-26 09:49:43 -05:00
fb485e862d
lcd_hd44780: Add proper timing delays around gpio updates
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A fast micro-controller may update the gpio pins faster than the
hd44780 chip can handle. Add in the appropriate delays.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2019-11-26 09:37:30 -05:00
afc9bcf27b
lcd_hd44780: Add micro-controller code for the HD44780 LCD chip
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Add support for passing messages to an HD44780 chip via a 4-bit
bit-banging interface.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2018-03-06 11:30:34 -05:00
Kevin O'Connor