User Interface, Using A buffer with a module

Projects Programming
7

sterretje:
There is no real difference between any read method (serial, file, ...). So I suggest that you read (possibly again) Serial Input Basics - updated; saves me a lot of typing ;). Example 2 will probably be a good option.

Ok. I read through Example 2. I didn't really understand it (Could you explain it to me? It confused me :confused: ) Anyways, I editied to the best of my ability. I basically replaced "Serial.read()" with "Keyboard.read()" so it would be reading from the keyboard, not the Serial Receive Buffer. I kept Serial.print() though. Here is my modified code:

#include <PS2Keyboard.h> //Keyboard

// Example 2 - Receive with an end-marker

const int DataPin = 18;
const int IRQpin =  19;

PS2Keyboard keyboard;

const byte numChars = 32;
char receivedChars[numChars];   // an array to store the received data

boolean newData = false;

void setup() {
    Serial.begin(9600);
      keyboard.begin(DataPin, IRQpin);
    Serial.println("<Arduino is ready>");
}

void loop() {
    recvWithEndMarker();
    showNewData();
}

void recvWithEndMarker() {
    static byte ndx = 0;
    char endMarker = '\n';
    char rc;
    
    while (keyboard.available() > 0 && newData == false) {
        rc = keyboard.read();

        if (rc != endMarker) {
            receivedChars[ndx] = rc;
            ndx++;
            if (ndx >= numChars) {
                ndx = numChars - 1;
            }
        }
        else {
            receivedChars[ndx] = '\0'; // terminate the string
            ndx = 0;
            newData = true;
        }
    }
}

void showNewData() {
    if (newData == true) {
        Serial.print("This just in ... ");
        Serial.println(receivedChars);
        newData = false;
    }
}

When I run this code, it compiles. On the serial monitor, it says "Arduino is Ready." However, when I type something on the PS2 keyboard, nothing happens!!
Could someone please explain this to me??
I love all the help so far! :slight_smile: