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- // 2010 Kenneth Finnegan
- // kennethfinnegan.blogspot.com
- //
- // Serial monitor to print a TTL serial line
- // to an HD44780 LCD screen
- // Runs on any Arduino platform
- #include <LiquidCrystal.h>
- // initialize the library with the numbers of the interface pins
- LiquidCrystal lcd(2,3,6,7,4,5);
- void setup() {
- // set up the LCD's number of rows and columns:
- lcd.begin(16, 4);
- Serial.begin(115200);
- // Print a message to the LCD to verify that it's alive.
- lcd.print("hello, world!");
- }
- void loop() {
- int i;
- // Scan through the four lines available on the LCD
- for (i=0; i<4; i++) {
- // busy loop until serial data is available
- while (Serial.available() < 1) { };
- // For some reason, 3rd & 4th lines require -4 cursor position
- lcd.setCursor(-4, i);
- // Clear the single line with spaces
- lcd.print (" ");
- lcd.setCursor(-4, i);
- int j;
- // read up to 16 charaters from serial port
- // TODO: filter command codes that don't display
- // on the HD44780 displays
- for (j=0; j < 16 && Serial.available(); j++) {
- char k = Serial.read();
- lcd.write(k);
- }
- // Pause to make reading progress easier
- delay (200);
- }
- }
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