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st7920: Better support for emulated ST7920 displays (#3979)

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Added new ST7920E display driver which is better suited for displays with emulated ST7920

Signed-off-by: Christian Kehe <teeminus@posteo.net>
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teeminus 2021-03-02 00:23:06 +01:00 • committed by GitHub
parent 4d3d25b1f7
commit bc2096f543
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3 changed files with 141 additions and 47 deletions
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18
docs/Config_Reference.md
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@ -3080,9 +3080,10 @@ lcd_type:
# The type of LCD chip in use. This may be "hd44780" (which is used
# in "RepRapDiscount 2004 Smart Controller" type displays), "st7920"
# (which is used in "RepRapDiscount 12864 Full Graphic Smart
# Controller" type displays), "uc1701" (which is used in "MKS Mini
# 12864" type displays), "ssd1306", or "sh1106". This parameter must
# be provided.
# Controller" type displays), "emulated_st7920" (which emulate a ST7920
# display but won't work properly with the "st7920" display driver),
# "uc1701" (which is used in "MKS Mini 12864" type displays),
# "ssd1306", or "sh1106". This parameter must be provided.
#hd44780_protocol_init: True
# Perform 8-bit/4-bit protocol initialization on an hd44780 display.
# This is necessary on real hd44780 devices. However, one may
@ -3105,6 +3106,17 @@ lcd_type:
#sid_pin:
# The pins connected to an st7920 type lcd. These parameters must be
# provided when using an st7920 display.
#en_pin:
#spi_speed:
#spi_software_sclk_pin:
#spi_software_mosi_pin:
#spi_software_miso_pin:
# The pins connected to an emulated_st7920 type lcd. The en_pin corresponds
# to the cs_pin of the st7920 type lcd, spi_software_sclk_pin corresponds
# to sclk_pin and spi_software_mosi_pin corresponds to sid_pin. The
# spi_software_miso_pin needs to be set to an unused pin of the printer
# mainboard as the st7920 as no MISO pin but the software spi implementation
# requires this pin to be configured. The default spi_speed is 1MHz.
#cs_pin:
#a0_pin:
#rst_pin: