liamgrazier lcd library 16x02
Fork of LGLCD by
Diff: lglcd.cpp
- Revision:
- 0:ef052de2d7d0
- Child:
- 1:9020af47a312
diff -r 000000000000 -r ef052de2d7d0 lglcd.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lglcd.cpp Fri Jan 05 14:13:07 2018 +0000 @@ -0,0 +1,70 @@ +#include "mbed.h" +#include "lglcd.h" + +lglcd::lglcd(PinName rs, PinName e, PinName d4, PinName d5,PinName d6, PinName d7) : _lcdrs(rs),_lcde(e), _lcdinfo(d4, d5, d6, d7) +{ + cline=1; //set the current line to the top line + cpos=0; //sets the current position to the left most CHARACTER + _lcde=1; //clear enable + _lcdrs=0; // command + l = 0; + writedata(_lcde,CMD); + wait(0.000004); //delay for LCD to initialise. + writedata(0x28,CMD); //set to 4 bit interface, 2 line and 5*8 font + wait(0.000004); + writedata(0x0C,CMD); //cursor on, cursor position blink + wait(0.000004); + writedata(0x10,CMD); + wait(0.000004); + LCD_CLR; //clear display + wait(0.000004); + writedata(0x06,CMD); //move cursor right after write + wait(0.000004); + LCD_HOME; //return home + +} +/*---------------------------------------------------------------------*/ +void lglcd::clear(void)//set a function to clear the lcd since just calling LCD_CLR can throw error if called to quickly +{ + LCD_CLR; + wait(0.002); //2ms delay to stop timing error +} + +/*---------------------------------------------------------------------*/ +void lglcd::writedata(unsigned char info, unsigned char type) +{ + if(type == CMD) { + _lcdrs=0; //COMMAND MODE + } else { + _lcdrs=1; //CHARACTER/DATA MODE + } + + _lcdinfo = info >> 4; + wait(0.000040f); // most instructions take 40us + _lcde = 0; + wait(0.000040f); + _lcde = 1; + _lcdinfo = info >> 0; + wait(0.000040f); + _lcde = 0; + wait(0.000040f); // most instructions take 40us + _lcde = 1; +} + +void lglcd::write(char charq[]) +{ + for (int i = 0; i < strlen(charq); i++) + { + wait(0.003); + int count = 0; + count++; + writedata(charq[i], TXT); + if (i == 15) { + writedata(LINE2 | 0, CMD); + } + if (i == 32) { + clear(); + writedata(LINE1, CMD); + } + } +}