11 Commits

Author	SHA1	Message	Date
Benjamin Valentin	d213bbc6f5	Revert "drivers/hd44780: add short delay after each character" ... This reverts commit cf01c743a89e17d78037fcc77f32b8daa859845e. Adding an unexplained delay seemed wrong in the first place, but it fixed the display on the MCB2388. Turns out the display was erroneously operating in 8-bit mode due to the uninitialized flag register. Why the delay helped here I don't know. But with #12634 fixing this, this hack is not needed anymore.	2019-11-07 22:40:01 +01:00
Alexandre Abadie	62d299459f	drivers/hd44780: optimize detection of 4 and 8 bit modes ... The driver can only be used with either 4 or 8 bit modes. Checking if the 5th pin is set in the configuration is enough the determine if 8bit mode should be used or not	2019-11-06 16:27:39 +01:00
Alexandre Abadie	c7fac09d42	drivers/hd44780: fix potential hardfault on initialization ... Co-authored-by Benjamin Valentin <benpicco@googlemail.com>	2019-11-06 16:14:39 +01:00
Benjamin Valentin	cf01c743a8	drivers/hd44780: add short delay after each character ... On the LCD display connected to the MCB2300 board, the display would not light up. Adding a 1µs delay after each byte of data seems to fix it.	2019-10-29 11:09:56 +01:00
Alexandre Abadie	8e70cfb2e4	driver/hd44780: cleanup param definition and HD44780_RW_OFF ... There's already a macro for undefined gpios: GPIO_UNDEF	2019-10-29 10:58:26 +01:00
Kees Bakker	2918d06e9c	drivers/hd44780: do normal assignment instead of memcpy	2019-01-10 19:43:44 +01:00
Gunar Schorcht	11be2035dd	drivers/hd44780: fix compilation errors	2018-10-11 08:21:28 +02:00
Alexandre Abadie	e72448703d	drivers: instead of cpp-style, use C-style comments	2018-02-06 16:59:58 +01:00
Alexandre Abadie	317716419c	drivers: use const device descriptor	2017-06-21 17:05:45 +02:00
smlng	8d50048c82	drivers: fix doxygen for hd44780	2017-04-21 11:30:15 +02:00
smlng	26ec9041a0	driver: add hd44780 lcd support	2017-03-27 16:43:50 +02:00