pcd8544(NOKIA5110) Command Line Tool for Raspberry Pi / Orange Pi

You can operate from command line.

+1 String : String for #1 line(with External 4X8 Font)
+2 String : String for #2 line(with External 4X8 Font)
+3 String : String for #3 line(with External 4X8 Font)
+4 String : String for #4 line(with External 4X8 Font)
+5 String : String for #5 line(with External 4X8 Font)
+6 String : String for #6 line(with External 4X8 Font)
+a String : String for #1 line(with Internal 6X8 Font)
+b String : String for #2 line(with Internal 6X8 Font)
+c String : String for #3 line(with Internal 6X8 Font)
+d String : String for #4 line(with Internal 6X8 Font)
+e String : String for #5 line(with Internal 6X8 Font)
+f String : String for #6 line(with Internal 6X8 Font)
-1 : delete #1 line
-2 : delete #2 line
-3 : delete #3 line
-4 : delete #4 line
-5 : delete #5 line
-6 : delete #6 line
+L : Scroll Up 1Line
-L : Scroll Down 1Line
P1 n : Set start colum n to line#1
P2 n : Set start colum n to line#2
P3 n : Set start colum n to line#3
P4 n : Set start colum n to line#4
P5 n : Set start colum n to line#5
P6 n : Set start colum n to line#6
r : remove all string
s : show display
c num : set contrast to num

You can use within script.
#!/bin/bash
./nokia r
./nokia +1 "ABCDEFG"
./nokia +2 "abcdefg"
./nokia +3 "1234567"
./nokia +d "ABCDEFG"
./nokia +e "abcdefg"
./nokia +f "1234567"
sudo ./nokia s

(*)There are two module of GND and 3.3V.
With BLUE module, if you supplies 3.3V to backlight pin, a backlight lights up.
With RED module, if you connects a backlight pin to GND, a backlight lights up.

WiringPi Library

git clone https://github.com/nopnop2002/Raspberry-pcd8544
cd Raspberry-pcd8544
cc -o nokia nokia.c fontx.c pcd8544.c -lwiringPi -lpthread
bash ./test.sh

Line#1-#3 : External 4X8 Font
Line#5-#6 : Internal 6X8 Font

// pin setup
#define _sclk  0
#define _din   1
#define _dc    2
#define _cs    3
#define _rst   4