lcd-20x4-i2c
manatee/lcd-i2c/lcd-20x4-i2c
No description
lcd-20x4-i2c
@/lcd-20x4-i2c
ADDRnumber
Your LCD address converted from HEX to DEC
BLboolean
Turn blacklight ON/OFF. Default is ON(true)
L1string
First Line
L2string
Second Line
L3string
Third Line
L4string
Fourth Line
C++ implementation
{{#global}}
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
{{/global}}
struct State {
LiquidCrystal_I2C* lcd;
};
{{ GENERATED_CODE }}
void printLine(LiquidCrystal_I2C* lcd, uint8_t lineIndex, XString str) {
lcd->setCursor(0, lineIndex);
uint8_t whitespace = 20;
for (auto it = str.iterate(); it; ++it, --whitespace)
lcd->write(*it);
//Clear remaining LCD lines
while (whitespace--)
lcd->write(' ');
}
void evaluate(Context ctx) {
State* state = getState(ctx);
auto lcd = state->lcd;
if (!state->lcd)
{
uint8_t addr = getValue<input_ADDR>(ctx);
state->lcd = lcd = new LiquidCrystal_I2C(addr, 20, 4);
lcd->begin();
}
printLine(lcd, 0, getValue<input_L1>(ctx));
printLine(lcd, 1, getValue<input_L2>(ctx));
printLine(lcd, 2, getValue<input_L3>(ctx));
printLine(lcd, 3, getValue<input_L4>(ctx));
lcd->setBacklight(getValue<input_BL>(ctx));
}