MATLAB/Octave - LCD 128x64 Bricklet

This is the description of the MATLAB/Octave API bindings for the LCD 128x64 Bricklet. General information and technical specifications for the LCD 128x64 Bricklet are summarized in its hardware description.

An installation guide for the MATLAB/Octave API bindings is part of their general description.

Examples

The example code below is Public Domain (CC0 1.0).

Hello World (MATLAB)

Download (matlab_example_hello_world.m)

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
function matlab_example_hello_world()
    import com.tinkerforge.IPConnection;
    import com.tinkerforge.BrickletLCD128x64;

    HOST = 'localhost';
    PORT = 4223;
    UID = 'XYZ'; % Change XYZ to the UID of your LCD 128x64 Bricklet

    ipcon = IPConnection(); % Create IP connection
    lcd = handle(BrickletLCD128x64(UID, ipcon), 'CallbackProperties'); % Create device object

    ipcon.connect(HOST, PORT); % Connect to brickd
    % Don't use device before ipcon is connected

    % Clear display
    lcd.clearDisplay();

    % Write "Hello World" starting from upper left corner of the screen
    lcd.writeLine(0, 0, 'Hello World');

    input('Press key to exit\n', 's');
    ipcon.disconnect();
end

Big Font (MATLAB)

Download (matlab_example_big_font.m)

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
function matlab_example_big_font()
    import com.tinkerforge.IPConnection;
    import com.tinkerforge.BrickletLCD128x64;

    HOST = 'localhost';
    PORT = 4223;
    UID = 'XYZ'; % Change XYZ to the UID of your LCD 128x64 Bricklet

    ipcon = IPConnection(); % Create IP connection
    lcd = handle(BrickletLCD128x64(UID, ipcon), 'CallbackProperties'); % Create device object

    ipcon.connect(HOST, PORT); % Connect to brickd
    % Don't use device before ipcon is connected

    % Clear display
    lcd.clearDisplay();

    % Write "Hello World" with big 24x32 font
    lcd.drawText(0, 0, BrickletLCD128x64.FONT_24X32, BrickletLCD128x64.COLOR_BLACK, ...
                 '24x32');

    input('Press key to exit\n', 's');
    ipcon.disconnect();
end

Pixel Matrix (MATLAB)

Download (matlab_example_pixel_matrix.m)

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
function matlab_example_pixel_matrix()
    import com.tinkerforge.IPConnection;
    import com.tinkerforge.BrickletLCD128x64;

    HOST = 'localhost';
    PORT = 4223;
    UID = 'XYZ'; % Change XYZ to the UID of your LCD 128x64 Bricklet
    SCREEN_WIDTH = 128;
    SCREEN_HEIGHT = 64;

    ipcon = IPConnection(); % Create IP connection
    lcd = handle(BrickletLCD128x64(UID, ipcon), 'CallbackProperties'); % Create device object

    ipcon.connect(HOST, PORT); % Connect to brickd
    % Don't use device before ipcon is connected

    % Clear display
    lcd.clearDisplay();

    % Draw checkerboard pattern
    for h = 0:SCREEN_HEIGHT-1
        for w = 0:SCREEN_WIDTH-1
            pixels(h*SCREEN_WIDTH + w + 1) = mod(floor(h / 8), 2) == mod(floor(w / 8), 2);
        end
    end

    lcd.writePixels(0, 0, SCREEN_WIDTH-1, SCREEN_HEIGHT-1, pixels);

    input('Press key to exit\n', 's');
    ipcon.disconnect();
end

Touch (MATLAB)

Download (matlab_example_touch.m)

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
function matlab_example_touch()
    import com.tinkerforge.IPConnection;
    import com.tinkerforge.BrickletLCD128x64;

    HOST = 'localhost';
    PORT = 4223;
    UID = 'XYZ'; % Change XYZ to the UID of your LCD 128x64 Bricklet

    ipcon = IPConnection(); % Create IP connection
    lcd = handle(BrickletLCD128x64(UID, ipcon), 'CallbackProperties'); % Create device object

    ipcon.connect(HOST, PORT); % Connect to brickd
    % Don't use device before ipcon is connected

    % Register touch position callback to function cb_touch_position
    set(lcd, 'TouchPositionCallback', @(h, e) cb_touch_position(e));

    % Register touch gesture callback to function cb_touch_gesture
    set(lcd, 'TouchGestureCallback', @(h, e) cb_touch_gesture(e));

    % Set period for touch position callback to 0.1s (100ms)
    lcd.setTouchPositionCallbackConfiguration(100, true);

    % Set period for touch gesture callback to 0.1s (100ms)
    lcd.setTouchGestureCallbackConfiguration(100, true);

    input('Press key to exit\n', 's');
    ipcon.disconnect();
end

% Callback function for touch position callback
function cb_touch_position(e)
    fprintf('Pressure: %i\n', e.pressure);
    fprintf('X: %i\n', e.x);
    fprintf('Y: %i\n', e.y);
    fprintf('Age: %i\n', e.age);
    fprintf('\n');
end

% Callback function for touch gesture callback
function cb_touch_gesture(e)
    if e.gesture == com.tinkerforge.BrickletLCD128x64.GESTURE_LEFT_TO_RIGHT
        fprintf('Gesture: Left To Right\n');
    elseif e.gesture == com.tinkerforge.BrickletLCD128x64.GESTURE_RIGHT_TO_LEFT
        fprintf('Gesture: Right To Left\n');
    elseif e.gesture == com.tinkerforge.BrickletLCD128x64.GESTURE_TOP_TO_BOTTOM
        fprintf('Gesture: Top To Bottom\n');
    elseif e.gesture == com.tinkerforge.BrickletLCD128x64.GESTURE_BOTTOM_TO_TOP
        fprintf('Gesture: Bottom To Top\n');
    end

    fprintf('Duration: %i\n', e.duration);
    fprintf('Pressure Max: %i\n', e.pressureMax);
    fprintf('X Start: %i\n', e.xStart);
    fprintf('X End: %i\n', e.xEnd);
    fprintf('Y Start: %i\n', e.yStart);
    fprintf('Y End: %i\n', e.yEnd);
    fprintf('Age: %i\n', e.age);
    fprintf('\n');
end

Gui (MATLAB)

Download (matlab_example_gui.m)

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
function matlab_example_gui()
    import com.tinkerforge.IPConnection;
    import com.tinkerforge.BrickletLCD128x64;

    HOST = 'localhost';
    PORT = 4223;
    UID = 'XYZ'; % Change XYZ to the UID of your LCD 128x64 Bricklet

    ipcon = IPConnection(); % Create IP connection
    lcd = handle(BrickletLCD128x64(UID, ipcon), 'CallbackProperties'); % Create device object

    ipcon.connect(HOST, PORT); % Connect to brickd
    % Don't use device before ipcon is connected

    % Register GUI button pressed callback to function cb_gui_button_pressed
    set(lcd, 'GUIButtonPressedCallback', @(h, e) cb_gui_button_pressed(e));

    % Register GUI slider value callback to function cb_gui_slider_value
    set(lcd, 'GUISliderValueCallback', @(h, e) cb_gui_slider_value(e));

    % Register GUI tab selected callback to function cb_gui_tab_selected
    set(lcd, 'GUITabSelectedCallback', @(h, e) cb_gui_tab_selected(e));

    % Clear display
    lcd.clearDisplay();
    lcd.removeAllGUI();

    % Add GUI elements: Button, Slider and Graph with 60 data points
    lcd.setGUIButton(0, 0, 0, 60, 20, 'button');
    lcd.setGUISlider(0, 0, 30, 60, BrickletLCD128x64.DIRECTION_HORIZONTAL, 50);
    lcd.setGUIGraphConfiguration(0, BrickletLCD128x64.GRAPH_TYPE_LINE, 62, 0, 60, 52, ...
                                 'X', 'Y');

    % Add a few data points (the remaining points will be 0)
    lcd.setGUIGraphData(0, [20 40 60 80 100 120 140 160 180 200 220 240]);

    % Add 5 text tabs without and configure it for click and swipe without auto-redraw
    lcd.setGUITabConfiguration(BrickletLCD128x64.CHANGE_TAB_ON_CLICK_AND_SWIPE, ...
                               false);
    lcd.setGUITabText(0, 'Tab A');
    lcd.setGUITabText(1, 'Tab B');
    lcd.setGUITabText(2, 'Tab C');
    lcd.setGUITabText(3, 'Tab D');
    lcd.setGUITabText(4, 'Tab E');

    % Set period for GUI button pressed callback to 0.1s (100ms)
    lcd.setGUIButtonPressedCallbackConfiguration(100, true);

    % Set period for GUI slider value callback to 0.1s (100ms)
    lcd.setGUISliderValueCallbackConfiguration(100, true);

    % Set period for GUI tab selected callback to 0.1s (100ms)
    lcd.setGUITabSelectedCallbackConfiguration(100, true);

    input('Press key to exit\n', 's');
    ipcon.disconnect();
end

% Callback function for GUI button pressed callback
function cb_gui_button_pressed(e)
    fprintf('Index: %i\n', e.index);
    fprintf('Pressed: %i\n', e.pressed);
    fprintf('\n');
end

% Callback function for GUI slider value callback
function cb_gui_slider_value(e)
    fprintf('Index: %i\n', e.index);
    fprintf('Value: %i\n', e.value);
    fprintf('\n');
end

% Callback function for GUI tab selected callback
function cb_gui_tab_selected(e)
    fprintf('Index: %i\n', e.index);
end

Big Font (Octave)

Download (octave_example_big_font.m)

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
function octave_example_big_font()
    more off;

    HOST = "localhost";
    PORT = 4223;
    UID = "XYZ"; % Change XYZ to the UID of your LCD 128x64 Bricklet

    ipcon = javaObject("com.tinkerforge.IPConnection"); % Create IP connection
    lcd = javaObject("com.tinkerforge.BrickletLCD128x64", UID, ipcon); % Create device object

    ipcon.connect(HOST, PORT); % Connect to brickd
    % Don't use device before ipcon is connected

    % Clear display
    lcd.clearDisplay();

    % Write "Hello World" with big 24x32 font
    lcd.drawText(0, 0, lcd.FONT_24X32, lcd.COLOR_BLACK, "24x32");

    input("Press key to exit\n", "s");
    ipcon.disconnect();
end

Hello World (Octave)

Download (octave_example_hello_world.m)

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
function octave_example_hello_world()
    more off;

    HOST = "localhost";
    PORT = 4223;
    UID = "XYZ"; % Change XYZ to the UID of your LCD 128x64 Bricklet

    ipcon = javaObject("com.tinkerforge.IPConnection"); % Create IP connection
    lcd = javaObject("com.tinkerforge.BrickletLCD128x64", UID, ipcon); % Create device object

    ipcon.connect(HOST, PORT); % Connect to brickd
    % Don't use device before ipcon is connected

    % Clear display
    lcd.clearDisplay();

    % Write "Hello World" starting from upper left corner of the screen
    lcd.writeLine(0, 0, "Hello World");

    input("Press key to exit\n", "s");
    ipcon.disconnect();
end

Pixel Matrix (Octave)

Download (octave_example_pixel_matrix.m)

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
function octave_example_pixel_matrix()
    more off;

    HOST = "localhost";
    PORT = 4223;
    UID = "XYZ"; % Change XYZ to the UID of your LCd 128x64 Bricklet
    SCREEN_WIDTH = 128;
    SCREEN_HEIGHT = 64;

    ipcon = javaObject("com.tinkerforge.IPConnection"); % Create IP connection
    lcd = javaObject("com.tinkerforge.BrickletLCD128x64", UID, ipcon); % Create device object

    ipcon.connect(HOST, PORT); % Connect to brickd
    % Don't use device before ipcon is connected

    % Clear display
    lcd.clearDisplay();

    % Draw checkerboard pattern
    for h = 0:SCREEN_HEIGHT-1
        for w = 0:SCREEN_WIDTH-1
            pixels(h*SCREEN_WIDTH + w + 1) = mod(floor(h / 8), 2) == mod(floor(w / 8), 2);
        end
    end

    lcd.writePixels(0, 0, SCREEN_WIDTH-1, SCREEN_HEIGHT-1, pixels);

    input("Press key to exit\n", "s");
    ipcon.disconnect();
end

Touch (Octave)

Download (octave_example_touch.m)

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
function octave_example_touch()
    more off;

    HOST = "localhost";
    PORT = 4223;
    UID = "XYZ"; % Change XYZ to the UID of your LCD 128x64 Bricklet

    ipcon = javaObject("com.tinkerforge.IPConnection"); % Create IP connection
    lcd = javaObject("com.tinkerforge.BrickletLCD128x64", UID, ipcon); % Create device object

    ipcon.connect(HOST, PORT); % Connect to brickd
    % Don't use device before ipcon is connected

    % Register touch position callback to function cb_touch_position
    lcd.addTouchPositionCallback(@cb_touch_position);

    % Register touch gesture callback to function cb_touch_gesture
    lcd.addTouchGestureCallback(@cb_touch_gesture);

    % Set period for touch position callback to 0.1s (100ms)
    lcd.setTouchPositionCallbackConfiguration(100, true);

    % Set period for touch gesture callback to 0.1s (100ms)
    lcd.setTouchGestureCallbackConfiguration(100, true);

    input("Press key to exit\n", "s");
    ipcon.disconnect();
end

% Callback function for touch position callback
function cb_touch_position(e)
    fprintf("Pressure: %d\n", e.pressure);
    fprintf("X: %d\n", e.x);
    fprintf("Y: %d\n", e.y);
    fprintf("Age: %d\n", java2int(e.age));
    fprintf("\n");
end

% Callback function for touch gesture callback
function cb_touch_gesture(e)
    if e.gesture == 0
        fprintf("Gesture: Left To Right\n");
    elseif e.gesture == 1
        fprintf("Gesture: Right To Left\n");
    elseif e.gesture == 2
        fprintf("Gesture: Top To Bottom\n");
    elseif e.gesture == 3
        fprintf("Gesture: Bottom To Top\n");
    end

    fprintf("Duration: %d\n", java2int(e.duration));
    fprintf("Pressure Max: %d\n", e.pressureMax);
    fprintf("X Start: %d\n", e.xStart);
    fprintf("X End: %d\n", e.xEnd);
    fprintf("Y Start: %d\n", e.yStart);
    fprintf("Y End: %d\n", e.yEnd);
    fprintf("Age: %d\n", java2int(e.age));
    fprintf("\n");
end

function int = java2int(value)
    if compare_versions(version(), "3.8", "<=")
        int = value.intValue();
    else
        int = value;
    end
end

Gui (Octave)

Download (octave_example_gui.m)

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
function octave_example_gui()
    more off;

    HOST = "localhost";
    PORT = 4223;
    UID = "XYZ"; % Change XYZ to the UID of your LCD 128x64 Bricklet

    ipcon = javaObject("com.tinkerforge.IPConnection"); % Create IP connection
    lcd = javaObject("com.tinkerforge.BrickletLCD128x64", UID, ipcon); % Create device object

    ipcon.connect(HOST, PORT); % Connect to brickd
    % Don't use device before ipcon is connected

    % Register GUI button pressed callback to function cb_gui_button_pressed
    lcd.addGUIButtonPressedCallback(@cb_gui_button_pressed);

    % Register GUI slider value callback to function cb_gui_slider_value
    lcd.addGUISliderValueCallback(@cb_gui_slider_value);

    % Register GUI tab selected callback to function cb_gui_tab_selected
    lcd.addGUITabSelectedCallback(@cb_gui_tab_selected);

    % Clear display
    lcd.clearDisplay();
    lcd.removeAllGUI();

    % Add GUI elements: Button, Slider and Graph with 60 data points
    lcd.setGUIButton(0, 0, 0, 60, 20, "button");
    lcd.setGUISlider(0, 0, 30, 60, lcd.DIRECTION_HORIZONTAL, 50);
    lcd.setGUIGraphConfiguration(0, lcd.GRAPH_TYPE_LINE, 62, 0, 60, 52, "X", "Y");

    % Add a few data points (the remaining points will be 0)
    lcd.setGUIGraphData(0, [20 40 60 80 100 120 140 160 180 200 220 240]);

    % Add 5 text tabs without and configure it for click and swipe without auto-redraw
    lcd.setGUITabConfiguration(lcd.CHANGE_TAB_ON_CLICK_AND_SWIPE, false);
    lcd.setGUITabText(0, "Tab A");
    lcd.setGUITabText(1, "Tab B");
    lcd.setGUITabText(2, "Tab C");
    lcd.setGUITabText(3, "Tab D");
    lcd.setGUITabText(4, "Tab E");

    % Set period for GUI button pressed callback to 0.1s (100ms)
    lcd.setGUIButtonPressedCallbackConfiguration(100, true);

    % Set period for GUI slider value callback to 0.1s (100ms)
    lcd.setGUISliderValueCallbackConfiguration(100, true);

    % Set period for GUI tab selected callback to 0.1s (100ms)
    lcd.setGUITabSelectedCallbackConfiguration(100, true);

    input("Press key to exit\n", "s");
    ipcon.disconnect();
end

% Callback function for GUI button pressed callback
function cb_gui_button_pressed(e)
    fprintf("Index: %d\n", e.index);
    fprintf("Pressed: %d\n", e.pressed);
    fprintf("\n");
end

% Callback function for GUI slider value callback
function cb_gui_slider_value(e)
    fprintf("Index: %d\n", e.index);
    fprintf("Value: %d\n", e.value);
    fprintf("\n");
end

% Callback function for GUI tab selected callback
function cb_gui_tab_selected(e)
    fprintf("Index: %d\n", e.index);
end

API

Generally, every method of the MATLAB bindings that returns a value can throw a TimeoutException. This exception gets thrown if the device did not respond. If a cable based connection is used, it is unlikely that this exception gets thrown (assuming nobody unplugs the device). However, if a wireless connection is used, timeouts will occur if the distance to the device gets too big.

Beside the TimeoutException there is also a NotConnectedException that is thrown if a method needs to communicate with the device while the IP Connection is not connected.

Since the MATLAB bindings are based on Java and Java does not support multiple return values and return by reference is not possible for primitive types, we use small classes that only consist of member variables. The member variables of the returned objects are described in the corresponding method descriptions.

The package for all Brick/Bricklet bindings and the IP Connection is com.tinkerforge.*

All methods listed below are thread-safe.

Basic Functions

class BrickletLCD128x64(String uid, IPConnection ipcon)
Parameters:
  • uid – Type: String
  • ipcon – Type: IPConnection
Returns:
  • lcd128x64 – Type: BrickletLCD128x64

Creates an object with the unique device ID uid.

In MATLAB:

import com.tinkerforge.BrickletLCD128x64;

lcd128x64 = BrickletLCD128x64('YOUR_DEVICE_UID', ipcon);

In Octave:

lcd128x64 = java_new("com.tinkerforge.BrickletLCD128x64", "YOUR_DEVICE_UID", ipcon);

This object can then be used after the IP Connection is connected (see examples above).

void BrickletLCD128x64.writePixels(int xStart, int yStart, int xEnd, int yEnd, boolean[] pixels)
Parameters:
  • xStart – Type: int, Range: [0 to 127]
  • yStart – Type: int, Range: [0 to 63]
  • xEnd – Type: int, Range: [0 to 127]
  • yEnd – Type: int, Range: [0 to 63]
  • pixels – Type: boolean[], Length: variable

Writes pixels to the specified window.

The pixels are written into the window line by line top to bottom and each line is written from left to right.

If automatic draw is enabled (default) the pixels are directly written to the screen. Only pixels that have actually changed are updated on the screen, the rest stays the same.

If automatic draw is disabled the pixels are written to an internal buffer and the buffer is transferred to the display only after drawBufferedFrame() is called. This can be used to avoid flicker when drawing a complex frame in multiple steps.

Automatic draw can be configured with the setDisplayConfiguration() function.

boolean[] BrickletLCD128x64.readPixels(int xStart, int yStart, int xEnd, int yEnd)
Parameters:
  • xStart – Type: int, Range: [0 to 127]
  • yStart – Type: int, Range: [0 to 63]
  • xEnd – Type: int, Range: [0 to 127]
  • yEnd – Type: int, Range: [0 to 63]
Returns:
  • pixels – Type: boolean[], Length: variable

Reads pixels from the specified window.

The pixels are read from the window line by line top to bottom and each line is read from left to right.

If automatic draw is enabled (default) the pixels that are read are always the same that are shown on the display.

If automatic draw is disabled the pixels are read from the internal buffer (see drawBufferedFrame()).

Automatic draw can be configured with the setDisplayConfiguration() function.

void BrickletLCD128x64.clearDisplay()

Clears the complete content of the display.

If automatic draw is enabled (default) the pixels are directly cleared.

If automatic draw is disabled the the internal buffer is cleared and the buffer is transferred to the display only after drawBufferedFrame() is called. This can be used to avoid flicker when drawing a complex frame in multiple steps.

Automatic draw can be configured with the setDisplayConfiguration() function.

void BrickletLCD128x64.writeLine(int line, int position, String text)
Parameters:
  • line – Type: int, Range: [0 to 7]
  • position – Type: int, Range: [0 to 21]
  • text – Type: String, Length: up to 22

Writes text to a specific line with a specific position.

For example: (1, 10, "Hello") will write Hello in the middle of the second line of the display.

The display uses a special 5x7 pixel charset. You can view the characters of the charset in Brick Viewer.

If automatic draw is enabled (default) the text is directly written to the screen. Only pixels that have actually changed are updated on the screen, the rest stays the same.

If automatic draw is disabled the text is written to an internal buffer and the buffer is transferred to the display only after drawBufferedFrame() is called. This can be used to avoid flicker when drawing a complex frame in multiple steps.

Automatic draw can be configured with the setDisplayConfiguration() function.

This function is a 1:1 replacement for the function with the same name in the LCD 20x4 Bricklet. You can draw text at a specific pixel position and with different font sizes with the drawText() function.

void BrickletLCD128x64.drawBufferedFrame(boolean forceCompleteRedraw)
Parameters:
  • forceCompleteRedraw – Type: boolean

Draws the currently buffered frame. Normally each call of writePixels() and writeLine() draws directly onto the display. If you turn automatic draw off (setDisplayConfiguration()), the data is written in an internal buffer and only transferred to the display by calling this function. This can be used to avoid flicker when drawing a complex frame in multiple steps.

Set the force complete redraw to true to redraw the whole display instead of only the changed parts. Normally it should not be necessary to set this to true. It may only become necessary in case of stuck pixels because of errors.

BrickletLCD128x64.TouchPosition BrickletLCD128x64.getTouchPosition()
Return Object:
  • pressure – Type: int, Range: [0 to 300]
  • x – Type: int, Range: [0 to 127]
  • y – Type: int, Range: [0 to 63]
  • age – Type: long, Unit: 1 ms, Range: [0 to 232 - 1]

Returns the last valid touch position:

  • Pressure: Amount of pressure applied by the user
  • X: Touch position on x-axis
  • Y: Touch position on y-axis
  • Age: Age of touch press (how long ago it was)
BrickletLCD128x64.TouchGesture BrickletLCD128x64.getTouchGesture()
Return Object:
  • gesture – Type: int, Range: See constants
  • duration – Type: long, Unit: 1 ms, Range: [0 to 232 - 1]
  • pressureMax – Type: int, Range: [0 to 300]
  • xStart – Type: int, Range: [0 to 127]
  • yStart – Type: int, Range: [0 to 63]
  • xEnd – Type: int, Range: [0 to 127]
  • yEnd – Type: int, Range: [0 to 63]
  • age – Type: long, Unit: 1 ms, Range: [0 to 232 - 1]

Returns one of four touch gestures that can be automatically detected by the Bricklet.

The gestures are swipes from left to right, right to left, top to bottom and bottom to top.

Additionally to the gestures a vector with a start and end position of the gesture is provided. You can use this vector do determine a more exact location of the gesture (e.g. the swipe from top to bottom was on the left or right part of the screen).

The age parameter corresponds to the age of gesture (how long ago it was).

The following constants are available for this function:

For gesture:

  • BrickletLCD128x64.GESTURE_LEFT_TO_RIGHT = 0
  • BrickletLCD128x64.GESTURE_RIGHT_TO_LEFT = 1
  • BrickletLCD128x64.GESTURE_TOP_TO_BOTTOM = 2
  • BrickletLCD128x64.GESTURE_BOTTOM_TO_TOP = 3
void BrickletLCD128x64.drawLine(int positionXStart, int positionYStart, int positionXEnd, int positionYEnd, boolean color)
Parameters:
  • positionXStart – Type: int, Range: [0 to 127]
  • positionYStart – Type: int, Range: [0 to 63]
  • positionXEnd – Type: int, Range: [0 to 127]
  • positionYEnd – Type: int, Range: [0 to 63]
  • color – Type: boolean

Draws a white or black line from (x, y)-start to (x, y)-end.

The following constants are available for this function:

For color:

  • BrickletLCD128x64.COLOR_WHITE = false
  • BrickletLCD128x64.COLOR_BLACK = true

New in version 2.0.2 (Plugin).

void BrickletLCD128x64.drawBox(int positionXStart, int positionYStart, int positionXEnd, int positionYEnd, boolean fill, boolean color)
Parameters:
  • positionXStart – Type: int, Range: [0 to 127]
  • positionYStart – Type: int, Range: [0 to 63]
  • positionXEnd – Type: int, Range: [0 to 127]
  • positionYEnd – Type: int, Range: [0 to 63]
  • fill – Type: boolean
  • color – Type: boolean

Draws a white or black box from (x, y)-start to (x, y)-end.

If you set fill to true, the box will be filled with the color. Otherwise only the outline will be drawn.

The following constants are available for this function:

For color:

  • BrickletLCD128x64.COLOR_WHITE = false
  • BrickletLCD128x64.COLOR_BLACK = true

New in version 2.0.2 (Plugin).

void BrickletLCD128x64.drawText(int positionX, int positionY, int font, boolean color, String text)
Parameters:
  • positionX – Type: int, Range: [0 to 127]
  • positionY – Type: int, Range: [0 to 63]
  • font – Type: int, Range: See constants
  • color – Type: boolean
  • text – Type: String, Length: up to 22

Draws a text at the pixel position (x, y).

You can use one of 9 different font sizes and draw the text in white or black.

The following constants are available for this function:

For font:

  • BrickletLCD128x64.FONT_6X8 = 0
  • BrickletLCD128x64.FONT_6X16 = 1
  • BrickletLCD128x64.FONT_6X24 = 2
  • BrickletLCD128x64.FONT_6X32 = 3
  • BrickletLCD128x64.FONT_12X16 = 4
  • BrickletLCD128x64.FONT_12X24 = 5
  • BrickletLCD128x64.FONT_12X32 = 6
  • BrickletLCD128x64.FONT_18X24 = 7
  • BrickletLCD128x64.FONT_18X32 = 8
  • BrickletLCD128x64.FONT_24X32 = 9

For color:

  • BrickletLCD128x64.COLOR_WHITE = false
  • BrickletLCD128x64.COLOR_BLACK = true

New in version 2.0.2 (Plugin).

void BrickletLCD128x64.setGUIButton(int index, int positionX, int positionY, int width, int height, String text)
Parameters:
  • index – Type: int, Range: [0 to 11]
  • positionX – Type: int, Range: [0 to 127]
  • positionY – Type: int, Range: [0 to 63]
  • width – Type: int, Range: [1 to 128]
  • height – Type: int, Range: [1 to 64]
  • text – Type: String, Length: up to 16

Draws a clickable button at position (x, y) with the given text.

You can use up to 12 buttons.

The x position + width has to be within the range of 1 to 128 and the y position + height has to be within the range of 1 to 64.

The minimum useful width/height of a button is 3.

You can enable a callback for a button press with setGUIButtonPressedCallbackConfiguration(). The callback will be triggered for press and release-events.

The button is drawn in a separate GUI buffer and the button-frame will always stay on top of the graphics drawn with writePixels(). To remove the button use removeGUIButton().

If you want an icon instead of text, you can draw the icon inside of the button with writePixels().

New in version 2.0.2 (Plugin).

BrickletLCD128x64.GUIButton BrickletLCD128x64.getGUIButton(int index)
Parameters:
  • index – Type: int, Range: [0 to 11]
Return Object:
  • active – Type: boolean
  • positionX – Type: int, Range: [0 to 127]
  • positionY – Type: int, Range: [0 to 63]
  • width – Type: int, Range: [1 to 128]
  • height – Type: int, Range: [1 to 64]
  • text – Type: String, Length: up to 16

Returns the button properties for a given Index as set by setGUIButton().

Additionally the Active parameter shows if a button is currently active/visible or not.

New in version 2.0.2 (Plugin).

void BrickletLCD128x64.removeGUIButton(int index)
Parameters:
  • index – Type: int, Range: [0 to 11, 255]

Removes the button with the given index.

You can use index 255 to remove all buttons.

New in version 2.0.2 (Plugin).

boolean BrickletLCD128x64.getGUIButtonPressed(int index)
Parameters:
  • index – Type: int, Range: [0 to 11]
Returns:
  • pressed – Type: boolean

Returns the state of the button for the given index.

The state can either be pressed (true) or released (false).

New in version 2.0.2 (Plugin).

void BrickletLCD128x64.setGUISlider(int index, int positionX, int positionY, int length, int direction, int value)
Parameters:
  • index – Type: int, Range: [0 to 5]
  • positionX – Type: int, Range: [0 to 128]
  • positionY – Type: int, Range: [0 to 64]
  • length – Type: int, Range: [8 to 128]
  • direction – Type: int, Range: See constants
  • value – Type: int, Range: [0 to 120]

Draws a slider at position (x, y) with the given length.

You can use up to 6 sliders.

If you use the horizontal direction, the x position + length has to be within the range of 1 to 128 and the y position has to be within the range of 0 to 46.

If you use the vertical direction, the y position + length has to be within the range of 1 to 64 and the x position has to be within the range of 0 to 110.

The minimum length of a slider is 8.

The parameter value is the start-position of the slider, it can be between 0 and length-8.

You can enable a callback for the slider value with setGUISliderValueCallbackConfiguration().

The slider is drawn in a separate GUI buffer and it will always stay on top of the graphics drawn with writePixels(). To remove the button use removeGUISlider().

The following constants are available for this function:

For direction:

  • BrickletLCD128x64.DIRECTION_HORIZONTAL = 0
  • BrickletLCD128x64.DIRECTION_VERTICAL = 1

New in version 2.0.2 (Plugin).

BrickletLCD128x64.GUISlider BrickletLCD128x64.getGUISlider(int index)
Parameters:
  • index – Type: int, Range: [0 to 5]
Return Object:
  • active – Type: boolean
  • positionX – Type: int, Range: [0 to 128]
  • positionY – Type: int, Range: [0 to 64]
  • length – Type: int, Range: [8 to 128]
  • direction – Type: int, Range: See constants
  • value – Type: int, Range: [0 to 120]

Returns the slider properties for a given Index as set by setGUISlider().

Additionally the Active parameter shows if a button is currently active/visible or not.

The following constants are available for this function:

For direction:

  • BrickletLCD128x64.DIRECTION_HORIZONTAL = 0
  • BrickletLCD128x64.DIRECTION_VERTICAL = 1

New in version 2.0.2 (Plugin).

void BrickletLCD128x64.removeGUISlider(int index)
Parameters:
  • index – Type: int, Range: [0 to 5, 255]

Removes the slider with the given index.

You can use index 255 to remove all slider.

New in version 2.0.2 (Plugin).

int BrickletLCD128x64.getGUISliderValue(int index)
Parameters:
  • index – Type: int, Range: [0 to 5]
Returns:
  • value – Type: int, Range: [0 to 120]

Returns the current slider value for the given index.

New in version 2.0.2 (Plugin).

void BrickletLCD128x64.setGUITabConfiguration(int changeTabConfig, boolean clearGUI)
Parameters:
  • changeTabConfig – Type: int, Range: See constants, Default: 3
  • clearGUI – Type: boolean, Default: true

Sets the general configuration for tabs. You can configure the tabs to only accept clicks or only swipes (gesture left/right and right/left) or both.

Additionally, if you set Clear GUI to true, all of the GUI elements (buttons, slider, graphs) will automatically be removed on every tab change.

The following constants are available for this function:

For changeTabConfig:

  • BrickletLCD128x64.CHANGE_TAB_ON_CLICK = 1
  • BrickletLCD128x64.CHANGE_TAB_ON_SWIPE = 2
  • BrickletLCD128x64.CHANGE_TAB_ON_CLICK_AND_SWIPE = 3

New in version 2.0.2 (Plugin).

BrickletLCD128x64.GUITabConfiguration BrickletLCD128x64.getGUITabConfiguration()
Return Object:
  • changeTabConfig – Type: int, Range: See constants, Default: 3
  • clearGUI – Type: boolean, Default: true

Returns the tab configuration as set by setGUITabConfiguration().

The following constants are available for this function:

For changeTabConfig:

  • BrickletLCD128x64.CHANGE_TAB_ON_CLICK = 1
  • BrickletLCD128x64.CHANGE_TAB_ON_SWIPE = 2
  • BrickletLCD128x64.CHANGE_TAB_ON_CLICK_AND_SWIPE = 3

New in version 2.0.2 (Plugin).

void BrickletLCD128x64.setGUITabText(int index, String text)
Parameters:
  • index – Type: int, Range: [0 to 9]
  • text – Type: String, Length: up to 5

Adds a text-tab with the given index.

You can use up to 10 tabs.

A text-tab with the same index as a icon-tab will overwrite the icon-tab.

New in version 2.0.2 (Plugin).

BrickletLCD128x64.GUITabText BrickletLCD128x64.getGUITabText(int index)
Parameters:
  • index – Type: int, Range: [0 to 9]
Return Object:
  • active – Type: boolean
  • text – Type: String, Length: up to 5

Returns the text for a given index as set by setGUITabText().

Additionally the Active parameter shows if the tab is currently active/visible or not.

New in version 2.0.2 (Plugin).

void BrickletLCD128x64.setGUITabIcon(int index, boolean[] icon)
Parameters:
  • index – Type: int, Range: [0 to 9]
  • icon – Type: boolean[], Length: 168

Adds a icon-tab with the given index. The icon can have a width of 28 pixels with a height of 6 pixels. It is drawn line-by-line from left to right.

You can use up to 10 tabs.

A icon-tab with the same index as a text-tab will overwrite the text-tab.

New in version 2.0.2 (Plugin).

BrickletLCD128x64.GUITabIcon BrickletLCD128x64.getGUITabIcon(int index)
Parameters:
  • index – Type: int, Range: [0 to 9]
Return Object:
  • active – Type: boolean
  • icon – Type: boolean[], Length: 168

Returns the icon for a given index as set by setGUITabIcon().

Additionally the Active parameter shows if the tab is currently active/visible or not.

New in version 2.0.2 (Plugin).

void BrickletLCD128x64.removeGUITab(int index)
Parameters:
  • index – Type: int, Range: [0 to 9, 255]

Removes the tab with the given index.

You can use index 255 to remove all tabs.

New in version 2.0.2 (Plugin).

void BrickletLCD128x64.setGUITabSelected(int index)
Parameters:
  • index – Type: int, Range: [0 to 9]

Sets the tab with the given index as selected (drawn as selected on the display).

New in version 2.0.2 (Plugin).

int BrickletLCD128x64.getGUITabSelected()
Returns:
  • index – Type: int, Range: [-1 to 9]

Returns the index of the currently selected tab. If there are not tabs, the returned index is -1.

New in version 2.0.2 (Plugin).

void BrickletLCD128x64.setGUIGraphConfiguration(int index, int graphType, int positionX, int positionY, int width, int height, String textX, String textY)
Parameters:
  • index – Type: int, Range: [0 to 3]
  • graphType – Type: int, Range: See constants
  • positionX – Type: int, Range: [0 to 127]
  • positionY – Type: int, Range: [0 to 63]
  • width – Type: int, Range: [0 to 118]
  • height – Type: int, Range: [0 to 63]
  • textX – Type: String, Length: up to 4
  • textY – Type: String, Length: up to 4

Sets the configuration for up to four graphs.

The graph type can be dot-, line- or bar-graph.

The x and y position are pixel positions.

You can add a text for the x and y axis. The text is drawn at the inside of the graph and it can overwrite some of the graph data. If you need the text outside of the graph you can leave this text here empty and use drawText() to draw the caption outside of the graph.

The data of the graph can be set and updated with setGUIGraphData().

The graph is drawn in a separate GUI buffer and the graph-frame and data will always stay on top of the graphics drawn with writePixels(). To remove the graph use removeGUIGraph().

The following constants are available for this function:

For graphType:

  • BrickletLCD128x64.GRAPH_TYPE_DOT = 0
  • BrickletLCD128x64.GRAPH_TYPE_LINE = 1
  • BrickletLCD128x64.GRAPH_TYPE_BAR = 2

New in version 2.0.2 (Plugin).

BrickletLCD128x64.GUIGraphConfiguration BrickletLCD128x64.getGUIGraphConfiguration(int index)
Parameters:
  • index – Type: int, Range: [0 to 3]
Return Object:
  • active – Type: boolean
  • graphType – Type: int, Range: See constants
  • positionX – Type: int, Range: [0 to 127]
  • positionY – Type: int, Range: [0 to 63]
  • width – Type: int, Range: [0 to 118]
  • height – Type: int, Range: [0 to 63]
  • textX – Type: String, Length: up to 4
  • textY – Type: String, Length: up to 4

Returns the graph properties for a given Index as set by setGUIGraphConfiguration().

Additionally the Active parameter shows if a graph is currently active/visible or not.

The following constants are available for this function:

For graphType:

  • BrickletLCD128x64.GRAPH_TYPE_DOT = 0
  • BrickletLCD128x64.GRAPH_TYPE_LINE = 1
  • BrickletLCD128x64.GRAPH_TYPE_BAR = 2

New in version 2.0.2 (Plugin).

void BrickletLCD128x64.setGUIGraphData(int index, int[] data)
Parameters:
  • index – Type: int, Range: [0 to 3]
  • data – Type: int[], Length: variable, Range: [0 to 255]

Sets the data for a graph with the given index. You have to configure the graph with setGUIGraphConfiguration() before you can set the first data.

The graph will show the first n values of the data that you set, where n is the width set with setGUIGraphConfiguration(). If you set less then n values it will show the rest of the values as zero.

The maximum number of data-points you can set is 118 (which also corresponds to the maximum width of the graph).

You have to scale your values to be between 0 and 255. 0 will be shown at the bottom of the graph and 255 at the top.

New in version 2.0.2 (Plugin).

int[] BrickletLCD128x64.getGUIGraphData(int index)
Parameters:
  • index – Type: int, Range: [0 to 3]
Returns:
  • data – Type: int[], Length: variable, Range: [0 to 255]

Returns the graph data for a given index as set by setGUIGraphData().

New in version 2.0.2 (Plugin).

void BrickletLCD128x64.removeGUIGraph(int index)
Parameters:
  • index – Type: int, Range: [0 to 3, 255]

Removes the graph with the given index.

You can use index 255 to remove all graphs.

New in version 2.0.2 (Plugin).

void BrickletLCD128x64.removeAllGUI()

Removes all GUI elements (buttons, slider, graphs, tabs).

New in version 2.0.2 (Plugin).

Advanced Functions

void BrickletLCD128x64.setDisplayConfiguration(int contrast, int backlight, boolean invert, boolean automaticDraw)
Parameters:
  • contrast – Type: int, Range: [0 to 63], Default: 14
  • backlight – Type: int, Range: [0 to 100], Default: 100
  • invert – Type: boolean, Default: false
  • automaticDraw – Type: boolean, Default: true

Sets the configuration of the display.

If automatic draw is set to true, the display is automatically updated with every call of writePixels() and writeLine(). If it is set to false, the changes are written into an internal buffer and only shown on the display after a call of drawBufferedFrame().

BrickletLCD128x64.DisplayConfiguration BrickletLCD128x64.getDisplayConfiguration()
Return Object:
  • contrast – Type: int, Range: [0 to 63], Default: 14
  • backlight – Type: int, Range: [0 to 100], Default: 100
  • invert – Type: boolean, Default: false
  • automaticDraw – Type: boolean, Default: true

Returns the configuration as set by setDisplayConfiguration().

void BrickletLCD128x64.setTouchLEDConfig(int config)
Parameters:
  • config – Type: int, Range: See constants, Default: 3

Sets the touch LED configuration. By default the LED is on if the LCD is touched.

You can also turn the LED permanently on/off or show a heartbeat.

If the Bricklet is in bootloader mode, the LED is off.

The following constants are available for this function:

For config:

  • BrickletLCD128x64.TOUCH_LED_CONFIG_OFF = 0
  • BrickletLCD128x64.TOUCH_LED_CONFIG_ON = 1
  • BrickletLCD128x64.TOUCH_LED_CONFIG_SHOW_HEARTBEAT = 2
  • BrickletLCD128x64.TOUCH_LED_CONFIG_SHOW_TOUCH = 3

New in version 2.0.2 (Plugin).

int BrickletLCD128x64.getTouchLEDConfig()
Returns:
  • config – Type: int, Range: See constants, Default: 3

Returns the configuration as set by setTouchLEDConfig()

The following constants are available for this function:

For config:

  • BrickletLCD128x64.TOUCH_LED_CONFIG_OFF = 0
  • BrickletLCD128x64.TOUCH_LED_CONFIG_ON = 1
  • BrickletLCD128x64.TOUCH_LED_CONFIG_SHOW_HEARTBEAT = 2
  • BrickletLCD128x64.TOUCH_LED_CONFIG_SHOW_TOUCH = 3

New in version 2.0.2 (Plugin).

BrickletLCD128x64.SPITFPErrorCount BrickletLCD128x64.getSPITFPErrorCount()
Return Object:
  • errorCountAckChecksum – Type: long, Range: [0 to 232 - 1]
  • errorCountMessageChecksum – Type: long, Range: [0 to 232 - 1]
  • errorCountFrame – Type: long, Range: [0 to 232 - 1]
  • errorCountOverflow – Type: long, Range: [0 to 232 - 1]

Returns the error count for the communication between Brick and Bricklet.

The errors are divided into

  • ACK checksum errors,
  • message checksum errors,
  • framing errors and
  • overflow errors.

The errors counts are for errors that occur on the Bricklet side. All Bricks have a similar function that returns the errors on the Brick side.

int BrickletLCD128x64.setBootloaderMode(int mode)
Parameters:
  • mode – Type: int, Range: See constants
Returns:
  • status – Type: int, Range: See constants

Sets the bootloader mode and returns the status after the requested mode change was instigated.

You can change from bootloader mode to firmware mode and vice versa. A change from bootloader mode to firmware mode will only take place if the entry function, device identifier and CRC are present and correct.

This function is used by Brick Viewer during flashing. It should not be necessary to call it in a normal user program.

The following constants are available for this function:

For mode:

  • BrickletLCD128x64.BOOTLOADER_MODE_BOOTLOADER = 0
  • BrickletLCD128x64.BOOTLOADER_MODE_FIRMWARE = 1
  • BrickletLCD128x64.BOOTLOADER_MODE_BOOTLOADER_WAIT_FOR_REBOOT = 2
  • BrickletLCD128x64.BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_REBOOT = 3
  • BrickletLCD128x64.BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_ERASE_AND_REBOOT = 4

For status:

  • BrickletLCD128x64.BOOTLOADER_STATUS_OK = 0
  • BrickletLCD128x64.BOOTLOADER_STATUS_INVALID_MODE = 1
  • BrickletLCD128x64.BOOTLOADER_STATUS_NO_CHANGE = 2
  • BrickletLCD128x64.BOOTLOADER_STATUS_ENTRY_FUNCTION_NOT_PRESENT = 3
  • BrickletLCD128x64.BOOTLOADER_STATUS_DEVICE_IDENTIFIER_INCORRECT = 4
  • BrickletLCD128x64.BOOTLOADER_STATUS_CRC_MISMATCH = 5
int BrickletLCD128x64.getBootloaderMode()
Returns:
  • mode – Type: int, Range: See constants

Returns the current bootloader mode, see setBootloaderMode().

The following constants are available for this function:

For mode:

  • BrickletLCD128x64.BOOTLOADER_MODE_BOOTLOADER = 0
  • BrickletLCD128x64.BOOTLOADER_MODE_FIRMWARE = 1
  • BrickletLCD128x64.BOOTLOADER_MODE_BOOTLOADER_WAIT_FOR_REBOOT = 2
  • BrickletLCD128x64.BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_REBOOT = 3
  • BrickletLCD128x64.BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_ERASE_AND_REBOOT = 4
void BrickletLCD128x64.setWriteFirmwarePointer(long pointer)
Parameters:
  • pointer – Type: long, Unit: 1 B, Range: [0 to 232 - 1]

Sets the firmware pointer for writeFirmware(). The pointer has to be increased by chunks of size 64. The data is written to flash every 4 chunks (which equals to one page of size 256).

This function is used by Brick Viewer during flashing. It should not be necessary to call it in a normal user program.

int BrickletLCD128x64.writeFirmware(int[] data)
Parameters:
  • data – Type: int[], Length: 64, Range: [0 to 255]
Returns:
  • status – Type: int, Range: [0 to 255]

Writes 64 Bytes of firmware at the position as written by setWriteFirmwarePointer() before. The firmware is written to flash every 4 chunks.

You can only write firmware in bootloader mode.

This function is used by Brick Viewer during flashing. It should not be necessary to call it in a normal user program.

void BrickletLCD128x64.setStatusLEDConfig(int config)
Parameters:
  • config – Type: int, Range: See constants, Default: 3

Sets the status LED configuration. By default the LED shows communication traffic between Brick and Bricklet, it flickers once for every 10 received data packets.

You can also turn the LED permanently on/off or show a heartbeat.

If the Bricklet is in bootloader mode, the LED is will show heartbeat by default.

The following constants are available for this function:

For config:

  • BrickletLCD128x64.STATUS_LED_CONFIG_OFF = 0
  • BrickletLCD128x64.STATUS_LED_CONFIG_ON = 1
  • BrickletLCD128x64.STATUS_LED_CONFIG_SHOW_HEARTBEAT = 2
  • BrickletLCD128x64.STATUS_LED_CONFIG_SHOW_STATUS = 3
int BrickletLCD128x64.getStatusLEDConfig()
Returns:
  • config – Type: int, Range: See constants, Default: 3

Returns the configuration as set by setStatusLEDConfig()

The following constants are available for this function:

For config:

  • BrickletLCD128x64.STATUS_LED_CONFIG_OFF = 0
  • BrickletLCD128x64.STATUS_LED_CONFIG_ON = 1
  • BrickletLCD128x64.STATUS_LED_CONFIG_SHOW_HEARTBEAT = 2
  • BrickletLCD128x64.STATUS_LED_CONFIG_SHOW_STATUS = 3
int BrickletLCD128x64.getChipTemperature()
Returns:
  • temperature – Type: int, Unit: 1 °C, Range: [-215 to 215 - 1]

Returns the temperature as measured inside the microcontroller. The value returned is not the ambient temperature!

The temperature is only proportional to the real temperature and it has bad accuracy. Practically it is only useful as an indicator for temperature changes.

void BrickletLCD128x64.reset()

Calling this function will reset the Bricklet. All configurations will be lost.

After a reset you have to create new device objects, calling functions on the existing ones will result in undefined behavior!

void BrickletLCD128x64.writeUID(long uid)
Parameters:
  • uid – Type: long, Range: [0 to 232 - 1]

Writes a new UID into flash. If you want to set a new UID you have to decode the Base58 encoded UID string into an integer first.

We recommend that you use Brick Viewer to change the UID.

long BrickletLCD128x64.readUID()
Returns:
  • uid – Type: long, Range: [0 to 232 - 1]

Returns the current UID as an integer. Encode as Base58 to get the usual string version.

BrickletLCD128x64.Identity BrickletLCD128x64.getIdentity()
Return Object:
  • uid – Type: String, Length: up to 8
  • connectedUid – Type: String, Length: up to 8
  • position – Type: char, Range: ['a' to 'h', 'i', 'z']
  • hardwareVersion – Type: int[], Length: 3
    • 1: major – Type: int, Range: [0 to 255]
    • 2: minor – Type: int, Range: [0 to 255]
    • 3: revision – Type: int, Range: [0 to 255]
  • firmwareVersion – Type: int[], Length: 3
    • 1: major – Type: int, Range: [0 to 255]
    • 2: minor – Type: int, Range: [0 to 255]
    • 3: revision – Type: int, Range: [0 to 255]
  • deviceIdentifier – Type: int, Range: [0 to 216 - 1]

Returns the UID, the UID where the Bricklet is connected to, the position, the hardware and firmware version as well as the device identifier.

The position can be 'a', 'b', 'c', 'd', 'e', 'f', 'g' or 'h' (Bricklet Port). The Raspberry Pi HAT (Zero) Brick is always at position 'i' and the Bricklet connected to an Isolator Bricklet is always as position 'z'.

The device identifier numbers can be found here. There is also a constant for the device identifier of this Bricklet.

Callback Configuration Functions

void BrickletLCD128x64.setTouchPositionCallbackConfiguration(long period, boolean valueHasToChange)
Parameters:
  • period – Type: long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 0
  • valueHasToChange – Type: boolean, Default: false

The period is the period with which the TouchPositionCallback callback is triggered periodically. A value of 0 turns the callback off.

If the value has to change-parameter is set to true, the callback is only triggered after the value has changed. If the value didn't change within the period, the callback is triggered immediately on change.

If it is set to false, the callback is continuously triggered with the period, independent of the value.

BrickletLCD128x64.TouchPositionCallbackConfiguration BrickletLCD128x64.getTouchPositionCallbackConfiguration()
Return Object:
  • period – Type: long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 0
  • valueHasToChange – Type: boolean, Default: false

Returns the callback configuration as set by setTouchPositionCallbackConfiguration().

void BrickletLCD128x64.setTouchGestureCallbackConfiguration(long period, boolean valueHasToChange)
Parameters:
  • period – Type: long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 0
  • valueHasToChange – Type: boolean, Default: false

The period is the period with which the TouchGestureCallback callback is triggered periodically. A value of 0 turns the callback off.

If the value has to change-parameter is set to true, the callback is only triggered after the value has changed. If the value didn't change within the period, the callback is triggered immediately on change.

If it is set to false, the callback is continuously triggered with the period, independent of the value.

BrickletLCD128x64.TouchGestureCallbackConfiguration BrickletLCD128x64.getTouchGestureCallbackConfiguration()
Return Object:
  • period – Type: long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 0
  • valueHasToChange – Type: boolean, Default: false

Returns the callback configuration as set by setTouchGestureCallbackConfiguration().

void BrickletLCD128x64.setGUIButtonPressedCallbackConfiguration(long period, boolean valueHasToChange)
Parameters:
  • period – Type: long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 0
  • valueHasToChange – Type: boolean, Default: false

The period is the period with which the GUIButtonPressedCallback callback is triggered periodically. A value of 0 turns the callback off.

If the value has to change-parameter is set to true, the callback is only triggered after the value has changed. If the value didn't change within the period, the callback is triggered immediately on change.

If it is set to false, the callback is continuously triggered with the period, independent of the value.

New in version 2.0.2 (Plugin).

BrickletLCD128x64.GUIButtonPressedCallbackConfiguration BrickletLCD128x64.getGUIButtonPressedCallbackConfiguration()
Return Object:
  • period – Type: long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 0
  • valueHasToChange – Type: boolean, Default: false

Returns the callback configuration as set by setGUIButtonPressedCallbackConfiguration().

New in version 2.0.2 (Plugin).

void BrickletLCD128x64.setGUISliderValueCallbackConfiguration(long period, boolean valueHasToChange)
Parameters:
  • period – Type: long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 0
  • valueHasToChange – Type: boolean, Default: false

The period is the period with which the GUISliderValueCallback callback is triggered periodically. A value of 0 turns the callback off.

If the value has to change-parameter is set to true, the callback is only triggered after the value has changed. If the value didn't change within the period, the callback is triggered immediately on change.

If it is set to false, the callback is continuously triggered with the period, independent of the value.

New in version 2.0.2 (Plugin).

BrickletLCD128x64.GUISliderValueCallbackConfiguration BrickletLCD128x64.getGUISliderValueCallbackConfiguration()
Return Object:
  • period – Type: long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 0
  • valueHasToChange – Type: boolean, Default: false

Returns the callback configuration as set by setGUISliderValueCallbackConfiguration().

New in version 2.0.2 (Plugin).

void BrickletLCD128x64.setGUITabSelectedCallbackConfiguration(long period, boolean valueHasToChange)
Parameters:
  • period – Type: long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 0
  • valueHasToChange – Type: boolean, Default: false

The period is the period with which the GUITabSelectedCallback callback is triggered periodically. A value of 0 turns the callback off.

If the value has to change-parameter is set to true, the callback is only triggered after the value has changed. If the value didn't change within the period, the callback is triggered immediately on change.

If it is set to false, the callback is continuously triggered with the period, independent of the value.

New in version 2.0.2 (Plugin).

BrickletLCD128x64.GUITabSelectedCallbackConfiguration BrickletLCD128x64.getGUITabSelectedCallbackConfiguration()
Return Object:
  • period – Type: long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 0
  • valueHasToChange – Type: boolean, Default: false

Returns the callback configuration as set by setGUITabSelectedCallbackConfiguration().

New in version 2.0.2 (Plugin).

Callbacks

Callbacks can be registered to receive time critical or recurring data from the device. The registration is done with "set" function of MATLAB. The parameters consist of the IP Connection object, the callback name and the callback function. For example, it looks like this in MATLAB:

function my_callback(e)
    fprintf('Parameter: %s\n', e.param);
end

set(device, 'ExampleCallback', @(h, e) my_callback(e));

Due to a difference in the Octave Java support the "set" function cannot be used in Octave. The registration is done with "add*Callback" functions of the device object. It looks like this in Octave:

function my_callback(e)
    fprintf("Parameter: %s\n", e.param);
end

device.addExampleCallback(@my_callback);

It is possible to add several callbacks and to remove them with the corresponding "remove*Callback" function.

The parameters of the callback are passed to the callback function as fields of the structure e, which is derived from the java.util.EventObject class. The available callback names with corresponding structure fields are described below.

Note

Using callbacks for recurring events is always preferred compared to using getters. It will use less USB bandwidth and the latency will be a lot better, since there is no round trip time.

callback BrickletLCD128x64.TouchPositionCallback
Event Object:
  • pressure – Type: int, Range: [0 to 300]
  • x – Type: int, Range: [0 to 127]
  • y – Type: int, Range: [0 to 63]
  • age – Type: long, Unit: 1 ms, Range: [0 to 232 - 1]

This callback is triggered periodically with the period that is set by setTouchPositionCallbackConfiguration(). The parameters are the same as for getTouchPosition().

In MATLAB the set() function can be used to register a callback function to this callback.

In Octave a callback function can be added to this callback using the addTouchPositionCallback() function. An added callback function can be removed with the removeTouchPositionCallback() function.

callback BrickletLCD128x64.TouchGestureCallback
Event Object:
  • gesture – Type: int, Range: See constants
  • duration – Type: long, Unit: 1 ms, Range: [0 to 232 - 1]
  • pressureMax – Type: int, Range: [0 to 300]
  • xStart – Type: int, Range: [0 to 127]
  • yStart – Type: int, Range: [0 to 63]
  • xEnd – Type: int, Range: [0 to 127]
  • yEnd – Type: int, Range: [0 to 63]
  • age – Type: long, Unit: 1 ms, Range: [0 to 232 - 1]

This callback is triggered periodically with the period that is set by setTouchGestureCallbackConfiguration(). The parameters are the same as for getTouchGesture().

The following constants are available for this function:

For gesture:

  • BrickletLCD128x64.GESTURE_LEFT_TO_RIGHT = 0
  • BrickletLCD128x64.GESTURE_RIGHT_TO_LEFT = 1
  • BrickletLCD128x64.GESTURE_TOP_TO_BOTTOM = 2
  • BrickletLCD128x64.GESTURE_BOTTOM_TO_TOP = 3

In MATLAB the set() function can be used to register a callback function to this callback.

In Octave a callback function can be added to this callback using the addTouchGestureCallback() function. An added callback function can be removed with the removeTouchGestureCallback() function.

callback BrickletLCD128x64.GUIButtonPressedCallback
Event Object:
  • index – Type: int, Range: [0 to 11]
  • pressed – Type: boolean

This callback is triggered periodically with the period that is set by setGUIButtonPressedCallbackConfiguration(). The parameters are the same as for getGUIButtonPressed().

New in version 2.0.2 (Plugin).

In MATLAB the set() function can be used to register a callback function to this callback.

In Octave a callback function can be added to this callback using the addGUIButtonPressedCallback() function. An added callback function can be removed with the removeGUIButtonPressedCallback() function.

callback BrickletLCD128x64.GUISliderValueCallback
Event Object:
  • index – Type: int, Range: [0 to 5]
  • value – Type: int, Range: [0 to 120]

This callback is triggered periodically with the period that is set by setGUISliderValueCallbackConfiguration(). The parameters are the same as for getGUISliderValue().

New in version 2.0.2 (Plugin).

In MATLAB the set() function can be used to register a callback function to this callback.

In Octave a callback function can be added to this callback using the addGUISliderValueCallback() function. An added callback function can be removed with the removeGUISliderValueCallback() function.

callback BrickletLCD128x64.GUITabSelectedCallback
Event Object:
  • index – Type: int, Range: [0 to 9]

This callback is triggered periodically with the period that is set by setGUITabSelectedCallbackConfiguration(). The parameters are the same as for getGUITabSelected().

New in version 2.0.2 (Plugin).

In MATLAB the set() function can be used to register a callback function to this callback.

In Octave a callback function can be added to this callback using the addGUITabSelectedCallback() function. An added callback function can be removed with the removeGUITabSelectedCallback() function.

Virtual Functions

Virtual functions don't communicate with the device itself, but operate only on the API bindings device object. They can be called without the corresponding IP Connection object being connected.

int[] BrickletLCD128x64.getAPIVersion()
Return Object:
  • apiVersion – Type: int[], Length: 3
    • 1: major – Type: int, Range: [0 to 255]
    • 2: minor – Type: int, Range: [0 to 255]
    • 3: revision – Type: int, Range: [0 to 255]

Returns the version of the API definition implemented by this API bindings. This is neither the release version of this API bindings nor does it tell you anything about the represented Brick or Bricklet.

boolean BrickletLCD128x64.getResponseExpected(int functionId)
Parameters:
  • functionId – Type: int, Range: See constants
Returns:
  • responseExpected – Type: boolean

Returns the response expected flag for the function specified by the function ID parameter. It is true if the function is expected to send a response, false otherwise.

For getter functions this is enabled by default and cannot be disabled, because those functions will always send a response. For callback configuration functions it is enabled by default too, but can be disabled by setResponseExpected(). For setter functions it is disabled by default and can be enabled.

Enabling the response expected flag for a setter function allows to detect timeouts and other error conditions calls of this setter as well. The device will then send a response for this purpose. If this flag is disabled for a setter function then no response is send and errors are silently ignored, because they cannot be detected.

The following constants are available for this function:

For functionId:

  • BrickletLCD128x64.FUNCTION_WRITE_PIXELS = 1
  • BrickletLCD128x64.FUNCTION_CLEAR_DISPLAY = 3
  • BrickletLCD128x64.FUNCTION_SET_DISPLAY_CONFIGURATION = 4
  • BrickletLCD128x64.FUNCTION_WRITE_LINE = 6
  • BrickletLCD128x64.FUNCTION_DRAW_BUFFERED_FRAME = 7
  • BrickletLCD128x64.FUNCTION_SET_TOUCH_POSITION_CALLBACK_CONFIGURATION = 9
  • BrickletLCD128x64.FUNCTION_SET_TOUCH_GESTURE_CALLBACK_CONFIGURATION = 13
  • BrickletLCD128x64.FUNCTION_DRAW_LINE = 16
  • BrickletLCD128x64.FUNCTION_DRAW_BOX = 17
  • BrickletLCD128x64.FUNCTION_DRAW_TEXT = 18
  • BrickletLCD128x64.FUNCTION_SET_GUI_BUTTON = 19
  • BrickletLCD128x64.FUNCTION_REMOVE_GUI_BUTTON = 21
  • BrickletLCD128x64.FUNCTION_SET_GUI_BUTTON_PRESSED_CALLBACK_CONFIGURATION = 22
  • BrickletLCD128x64.FUNCTION_SET_GUI_SLIDER = 26
  • BrickletLCD128x64.FUNCTION_REMOVE_GUI_SLIDER = 28
  • BrickletLCD128x64.FUNCTION_SET_GUI_SLIDER_VALUE_CALLBACK_CONFIGURATION = 29
  • BrickletLCD128x64.FUNCTION_SET_GUI_TAB_CONFIGURATION = 33
  • BrickletLCD128x64.FUNCTION_SET_GUI_TAB_TEXT = 35
  • BrickletLCD128x64.FUNCTION_SET_GUI_TAB_ICON = 37
  • BrickletLCD128x64.FUNCTION_REMOVE_GUI_TAB = 39
  • BrickletLCD128x64.FUNCTION_SET_GUI_TAB_SELECTED = 40
  • BrickletLCD128x64.FUNCTION_SET_GUI_TAB_SELECTED_CALLBACK_CONFIGURATION = 41
  • BrickletLCD128x64.FUNCTION_SET_GUI_GRAPH_CONFIGURATION = 45
  • BrickletLCD128x64.FUNCTION_SET_GUI_GRAPH_DATA = 47
  • BrickletLCD128x64.FUNCTION_REMOVE_GUI_GRAPH = 49
  • BrickletLCD128x64.FUNCTION_REMOVE_ALL_GUI = 50
  • BrickletLCD128x64.FUNCTION_SET_TOUCH_LED_CONFIG = 51
  • BrickletLCD128x64.FUNCTION_SET_WRITE_FIRMWARE_POINTER = 237
  • BrickletLCD128x64.FUNCTION_SET_STATUS_LED_CONFIG = 239
  • BrickletLCD128x64.FUNCTION_RESET = 243
  • BrickletLCD128x64.FUNCTION_WRITE_UID = 248
void BrickletLCD128x64.setResponseExpected(int functionId, boolean responseExpected)
Parameters:
  • functionId – Type: int, Range: See constants
  • responseExpected – Type: boolean

Changes the response expected flag of the function specified by the function ID parameter. This flag can only be changed for setter (default value: false) and callback configuration functions (default value: true). For getter functions it is always enabled.

Enabling the response expected flag for a setter function allows to detect timeouts and other error conditions calls of this setter as well. The device will then send a response for this purpose. If this flag is disabled for a setter function then no response is send and errors are silently ignored, because they cannot be detected.

The following constants are available for this function:

For functionId:

  • BrickletLCD128x64.FUNCTION_WRITE_PIXELS = 1
  • BrickletLCD128x64.FUNCTION_CLEAR_DISPLAY = 3
  • BrickletLCD128x64.FUNCTION_SET_DISPLAY_CONFIGURATION = 4
  • BrickletLCD128x64.FUNCTION_WRITE_LINE = 6
  • BrickletLCD128x64.FUNCTION_DRAW_BUFFERED_FRAME = 7
  • BrickletLCD128x64.FUNCTION_SET_TOUCH_POSITION_CALLBACK_CONFIGURATION = 9
  • BrickletLCD128x64.FUNCTION_SET_TOUCH_GESTURE_CALLBACK_CONFIGURATION = 13
  • BrickletLCD128x64.FUNCTION_DRAW_LINE = 16
  • BrickletLCD128x64.FUNCTION_DRAW_BOX = 17
  • BrickletLCD128x64.FUNCTION_DRAW_TEXT = 18
  • BrickletLCD128x64.FUNCTION_SET_GUI_BUTTON = 19
  • BrickletLCD128x64.FUNCTION_REMOVE_GUI_BUTTON = 21
  • BrickletLCD128x64.FUNCTION_SET_GUI_BUTTON_PRESSED_CALLBACK_CONFIGURATION = 22
  • BrickletLCD128x64.FUNCTION_SET_GUI_SLIDER = 26
  • BrickletLCD128x64.FUNCTION_REMOVE_GUI_SLIDER = 28
  • BrickletLCD128x64.FUNCTION_SET_GUI_SLIDER_VALUE_CALLBACK_CONFIGURATION = 29
  • BrickletLCD128x64.FUNCTION_SET_GUI_TAB_CONFIGURATION = 33
  • BrickletLCD128x64.FUNCTION_SET_GUI_TAB_TEXT = 35
  • BrickletLCD128x64.FUNCTION_SET_GUI_TAB_ICON = 37
  • BrickletLCD128x64.FUNCTION_REMOVE_GUI_TAB = 39
  • BrickletLCD128x64.FUNCTION_SET_GUI_TAB_SELECTED = 40
  • BrickletLCD128x64.FUNCTION_SET_GUI_TAB_SELECTED_CALLBACK_CONFIGURATION = 41
  • BrickletLCD128x64.FUNCTION_SET_GUI_GRAPH_CONFIGURATION = 45
  • BrickletLCD128x64.FUNCTION_SET_GUI_GRAPH_DATA = 47
  • BrickletLCD128x64.FUNCTION_REMOVE_GUI_GRAPH = 49
  • BrickletLCD128x64.FUNCTION_REMOVE_ALL_GUI = 50
  • BrickletLCD128x64.FUNCTION_SET_TOUCH_LED_CONFIG = 51
  • BrickletLCD128x64.FUNCTION_SET_WRITE_FIRMWARE_POINTER = 237
  • BrickletLCD128x64.FUNCTION_SET_STATUS_LED_CONFIG = 239
  • BrickletLCD128x64.FUNCTION_RESET = 243
  • BrickletLCD128x64.FUNCTION_WRITE_UID = 248
void BrickletLCD128x64.setResponseExpectedAll(boolean responseExpected)
Parameters:
  • responseExpected – Type: boolean

Changes the response expected flag for all setter and callback configuration functions of this device at once.

Constants

int BrickletLCD128x64.DEVICE_IDENTIFIER

This constant is used to identify a LCD 128x64 Bricklet.

The getIdentity() function and the IPConnection.EnumerateCallback callback of the IP Connection have a deviceIdentifier parameter to specify the Brick's or Bricklet's type.

String BrickletLCD128x64.DEVICE_DISPLAY_NAME

This constant represents the human readable name of a LCD 128x64 Bricklet.