Jon Trinder / jtlcd

Convenience routines for an I"C connected LCD display. Handy things like taking cursor to home, positioning cursor, clearing display, writing strings etc

Dependents:   gu_squirt_tester

jtlcd.cpp@1:2ded47079af1, 2012-11-07 (annotated)

Committer:
jont
Date:
Wed Nov 07 22:23:13 2012 +0000
Revision:
1:2ded47079af1
Parent:
0:8f724a47a820
Child:
2:5b220477045b
project renamed rainman;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jont 0:8f724a47a820 1 #include "mbed.h"
jont 0:8f724a47a820 2 #include "jtlcd.h"
jont 0:8f724a47a820 3
jont 0:8f724a47a820 4 I2C i2c(p28, p27); // sda, scl
jont 0:8f724a47a820 5 void lcdinit()
jont 0:8f724a47a820 6 {
jont 0:8f724a47a820 7
jont 0:8f724a47a820 8 i2c.start();
jont 0:8f724a47a820 9 i2c.write(Slave);
jont 0:8f724a47a820 10 i2c.write(0x00);
jont 0:8f724a47a820 11 i2c.write(0x38);
jont 0:8f724a47a820 12 wait(0.01);
jont 0:8f724a47a820 13 i2c.write(0x39); //i assume now we juyst need data?
jont 0:8f724a47a820 14 wait(0.01);
jont 0:8f724a47a820 15 i2c.write(0x14);
jont 0:8f724a47a820 16 i2c.write(0x74);
jont 0:8f724a47a820 17 i2c.write(0x54);
jont 0:8f724a47a820 18 i2c.write(0x6f);
jont 0:8f724a47a820 19 i2c.write(0x0c);
jont 0:8f724a47a820 20 i2c.write(0x01);
jont 0:8f724a47a820 21 i2c.write(0x06);
jont 0:8f724a47a820 22 wait(0.01);
jont 0:8f724a47a820 23 i2c.stop();
jont 0:8f724a47a820 24
jont 0:8f724a47a820 25
jont 0:8f724a47a820 26 }
jont 0:8f724a47a820 27
jont 0:8f724a47a820 28 void lcdclear()
jont 0:8f724a47a820 29 {
jont 0:8f724a47a820 30 i2c.start();
jont 0:8f724a47a820 31 i2c.write(Slave);
jont 0:8f724a47a820 32 i2c.write(0x00);
jont 0:8f724a47a820 33 i2c.write(0x01);
jont 0:8f724a47a820 34 i2c.stop();
jont 0:8f724a47a820 35 wait(0.2);
jont 0:8f724a47a820 36 }
jont 0:8f724a47a820 37
jont 0:8f724a47a820 38 void test()
jont 0:8f724a47a820 39 {
jont 0:8f724a47a820 40
jont 0:8f724a47a820 41 i2c.start();
jont 0:8f724a47a820 42 i2c.write(Slave);
jont 0:8f724a47a820 43 i2c.stop();
jont 0:8f724a47a820 44 wait(0.2);
jont 0:8f724a47a820 45 }
jont 0:8f724a47a820 46
jont 0:8f724a47a820 47
jont 0:8f724a47a820 48 void Show(char *text)
jont 0:8f724a47a820 49 {
jont 1:2ded47079af1 50 int n;//,d;
jont 1:2ded47079af1 51 //d=0x00;
jont 0:8f724a47a820 52 int length = strlen(text);
jont 0:8f724a47a820 53 i2c.start();
jont 0:8f724a47a820 54 i2c.write(Slave); //Slave=0x78
jont 0:8f724a47a820 55 i2c.write(Datasend);//Datasend=0x40
jont 0:8f724a47a820 56 for(n=0;n<length;n++){
jont 0:8f724a47a820 57 i2c.write(*text);
jont 0:8f724a47a820 58 ++text;
jont 0:8f724a47a820 59 }
jont 0:8f724a47a820 60 i2c.stop();
jont 0:8f724a47a820 61 }