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[Lcdproc] GPIO connection type for HD44780 driver


Chronological Thread 
  • From: coiker at live.com (Iker Curro)
  • Subject: [Lcdproc] GPIO connection type for HD44780 driver
  • Date: Sun, 1 Nov 2015 21:39:51 +0100

Hello!

The code runs here on a BananaPi with Jessie, Kernel 4.1.2, display with 20x4.

Had to find the GPIO-number-calculation on
http://linux-sunxi.org/GPIO#Accessing_the_GPIO_pins_through_sysfs_with_mainline_kernel
for the right pins.
These are the pins as used as default in the hd44780-rpi driver:
# D7=Con3p12=PH-02 D6=Con3p16=PH-20 D5=Con3p18=PH-21 D4=Con3p22=PI-16
# EN=Con3p24=PI-10 RS=CON3p26=PI-14 RW=GND
pin_D7=226
pin_D6=244
pin_D5=245
pin_D4=272
pin_EN=266
pin_RS=270

In the beginning, making these wrong, I got a few freezes.
So there seems to be something wrong with the gpio driver of the system.

Best regards,
Iker






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