라즈베리 파이 CLCD 라이브러리

한번 연결해봐야지 

int  lcdInit (int rows, int cols, int bits, int rs, int strb,         int d0, int d1, int d2, int d3, int d4, int d5, int d6, int d7) ; In the above Fritzing diagrams, the 4-bit one would be initialised by: fd = lcdInit (2, 16, 4,  11,10 , 0,1,2,3,0,0,0,0) ; and the 8-bit one by: fd = lcdInit (2, 16, 8,  11,10 , 0,1,2,3,4,5,6,7) ;

+-----+-----+---------+------+---+---Pi 2---+---+------+---------+-----+-----+  | BCM | wPi |   Name  | Mode | V | Physical | V | Mode | Name    | wPi | BCM |  +-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+  |     |     |    3.3v |      |   |  1 || 2  |   |      | 5v      |     |     |  |   2 |   8 |   SDA.1 | ALT0 | 1 |  3 || 4  |   |      | 5V      |     |     |  |   3 |   9 |   SCL.1 | ALT0 | 1 |  5 || 6  |   |      | 0v      |     |     |  |   4 |   7 | GPIO. 7 |   IN | 1 |  7 || 8  | 1 | ALT0 | TxD     | 15  | 14  |  |     |     |      0v |      |   |  9 || 10 | 1 | ALT0 | RxD     | 16  | 15  |  |  17 |   0 | GPIO. 0 |   IN | 0 | 11 || 12 | 0 | IN   | GPIO. 1 | 1   | 18  |  |  27 |   2 | GPIO. 2 |   IN | 0 | 13 || 14 |   |      | 0v      |     |     |  |  22 |   3 | GPIO. 3 |   IN | 0 | 15 || 16 | 0 | IN   | GPIO. 4 | 4   | 23  |  |     |     |    3.3v |      |   | 17 || 18 | 0 | IN   | GPIO. 5 | 5   | 24  |  |  10 |  12 |    MOSI |   IN | 0 | 19 || 20 |   |      | 0v      |     |     |  |   9 |  13 |    MISO |   IN | 0 | 21 || 22 | 0 | IN   | GPIO. 6 | 6   | 25  |  |  11 |  14 |    SCLK |   IN | 0 | 23 || 24 | 1 | IN   | CE0     | 10  | 8   |  |     |     |      0v |      |   | 25 || 26 | 1 | IN   | CE1     | 11  | 7   |

4bit              22  27 17 7  8                  18

8bit             22  27  17    4 7  8  25   24  23  18

4bit

8bit

[링크 : https://projects.drogon.net/raspberry-pi/wiringpi/lcd-library/]

[링크 : https://learn.adafruit.com/drive-a-16x2-lcd-directly-with-a-raspberry-pi/overview]

+

If using wiringPi v2, then you need to add in -lwiringPiDev as well as -lwiringPi

[링크 : https://projects.drogon.net/raspberry-pi/wiringpi/lcd-library/]