LCD 1602 + Orange Pi Zero GPIO?

kiwisaurio

Hey guys, I'm new on this kind of things. I recently bought an Orange Pi Zero and i'm kinda lost with everything. I found a picture of its GPIO but I can't solve what does the letters mean on every pinout.
The point is that I wanted to place a 1602 LCD on it, and make it to show me the temperature and the status of the Orange Pi (like, is it's online, working on its process, w/e) but I dont know how to do it.
Do you guys know anything about this and could you help me? Thank you.

Here is the GPIO picture in case you don't want to look for it: https://oshlab.com/orange-pi-zero-pinout/
Forgot to say what OS I'm using. I'm using DietPi and I saw that it has a GPIO library, I'll update this post later.

nopnop2002

1. #include <stdio.h>
   
2. #include <string.h>
   
3. #include <stdlib.h>
   
4. #include <wiringPi.h>
   
5. #include <lcd.h>
   
6. 
   
7. /*
   
8. cc -o lcd lcd.c -lwiringPi -lwiringPiDev
   
9. 
   
10. lcd
    
11. lcd line1 line2
    
12. 
    
13. 1602LCD    PI
    
14. VSS    --- 5V
    
15. VDD    --- Gnd
    
16. V0     --- Volume
    
17. RS     --- Pin#16
    
18. RW     --- Gnd
    
19. E      --- Pin#18
    
20. D0
    
21. D1
    
22. D2
    
23. D3
    
24. D4     --- Pin#11
    
25. D5     --- Pin#12
    
26. D6     --- Pin#13
    
27. D7     --- Pin#15
    
28. 
    
29. */
    
30. 
    
31. #define DEBUG   0
    
32. 
    
33. int main(int argc, char **argv) {
    
34.     int fd_lcd;
    
35.     int stlen;
    
36.     int i;
    
37.     int line;
    
38.     char string1[17];
    
39.     char string2[17];
    
40. 
    
41.     if(wiringPiSetup() == -1) {
    
42.         printf("Setup Fail\n");
    
43.         exit(1);
    
44.     }
    
45.     fd_lcd = lcdInit(2,16,4,4,5,0,1,2,3,0,0,0,0);
    
46. 
    
47. if(DEBUG)printf("argc=%d\n",argc);
    
48.     memset(string1,0,sizeof(string1));
    
49.     memset(string2,0,sizeof(string1));
    
50.     if(argc == 1) {
    
51.       lcdClear(fd_lcd);
    
52.     } else if (argc == 2) {
    
53.     } else if (argc == 3) {
    
54.       stlen=strlen(argv[1]);
    
55. if(DEBUG)printf("stlen=%d\n",stlen);
    
56.       if (stlen < 17) {
    
57.         strcpy(string1,argv[1]);
    
58.       } else {
    
59.         strncpy(string1,argv[1],16);
    
60.       }
    
61.       stlen=strlen(argv[2]);
    
62. if(DEBUG)printf("stlen=%d\n",stlen);
    
63.       if (stlen < 17) {
    
64.         strcpy(string2,argv[2]);
    
65.       } else {
    
66.         strncpy(string2,argv[2],16);
    
67.       }
    
68.       lcdPosition(fd_lcd,0,0);
    
69.       lcdPuts(fd_lcd,string1);
    
70.       lcdPosition(fd_lcd,0,1);
    
71.       lcdPuts(fd_lcd,string2);
    
72.     }
    
73. }

Copy code

Clear LCD
$sudo ./lcd

Show LCD
$sudo ./lcd Line1 Lne2