MATLAB/Octave - Real-Time Clock Bricklet 2.0¶

Simple (MATLAB)¶

Download (matlab_example_simple.m)

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function matlab_example_simple()
    import com.tinkerforge.IPConnection;
    import com.tinkerforge.BrickletRealTimeClockV2;

    HOST = 'localhost';
    PORT = 4223;
    UID = 'XYZ'; % Change XYZ to the UID of your Real-Time Clock Bricklet 2.0

    ipcon = IPConnection(); % Create IP connection
    rtc = handle(BrickletRealTimeClockV2(UID, ipcon), 'CallbackProperties'); % Create device object

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

    % Get current date and time
    dateTime = rtc.getDateTime();

    fprintf('Year: %i\n', dateTime.year);
    fprintf('Month: %i\n', dateTime.month);
    fprintf('Day: %i\n', dateTime.day);
    fprintf('Hour: %i\n', dateTime.hour);
    fprintf('Minute: %i\n', dateTime.minute);
    fprintf('Second: %i\n', dateTime.second);
    fprintf('Centisecond: %i\n', dateTime.centisecond);

    if dateTime.weekday == BrickletRealTimeClockV2.WEEKDAY_MONDAY
        fprintf('Weekday: Monday\n');
    elseif dateTime.weekday == BrickletRealTimeClockV2.WEEKDAY_TUESDAY
        fprintf('Weekday: Tuesday\n');
    elseif dateTime.weekday == BrickletRealTimeClockV2.WEEKDAY_WEDNESDAY
        fprintf('Weekday: Wednesday\n');
    elseif dateTime.weekday == BrickletRealTimeClockV2.WEEKDAY_THURSDAY
        fprintf('Weekday: Thursday\n');
    elseif dateTime.weekday == BrickletRealTimeClockV2.WEEKDAY_FRIDAY
        fprintf('Weekday: Friday\n');
    elseif dateTime.weekday == BrickletRealTimeClockV2.WEEKDAY_SATURDAY
        fprintf('Weekday: Saturday\n');
    elseif dateTime.weekday == BrickletRealTimeClockV2.WEEKDAY_SUNDAY
        fprintf('Weekday: Sunday\n');
    end

    fprintf('Timestamp: %i ms\n', dateTime.timestamp);

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

Callback (MATLAB)¶

Download (matlab_example_callback.m)

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function matlab_example_callback()
    import com.tinkerforge.IPConnection;
    import com.tinkerforge.BrickletRealTimeClockV2;

    HOST = 'localhost';
    PORT = 4223;
    UID = 'XYZ'; % Change XYZ to the UID of your Real-Time Clock Bricklet 2.0

    ipcon = IPConnection(); % Create IP connection
    rtc = handle(BrickletRealTimeClockV2(UID, ipcon), 'CallbackProperties'); % Create device object

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

    % Register date and time callback to function cb_date_time
    set(rtc, 'DateTimeCallback', @(h, e) cb_date_time(e));

    % Set period for date and time callback to 5s (5000ms)
    rtc.setDateTimeCallbackConfiguration(5000);

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

% Callback function for date and time callback
function cb_date_time(e)
    fprintf('Year: %i\n', e.year);
    fprintf('Month: %i\n', e.month);
    fprintf('Day: %i\n', e.day);
    fprintf('Hour: %i\n', e.hour);
    fprintf('Minute: %i\n', e.minute);
    fprintf('Second: %i\n', e.second);
    fprintf('Centisecond: %i\n', e.centisecond);

    if e.weekday == com.tinkerforge.BrickletRealTimeClockV2.WEEKDAY_MONDAY
        fprintf('Weekday: Monday\n');
    elseif e.weekday == com.tinkerforge.BrickletRealTimeClockV2.WEEKDAY_TUESDAY
        fprintf('Weekday: Tuesday\n');
    elseif e.weekday == com.tinkerforge.BrickletRealTimeClockV2.WEEKDAY_WEDNESDAY
        fprintf('Weekday: Wednesday\n');
    elseif e.weekday == com.tinkerforge.BrickletRealTimeClockV2.WEEKDAY_THURSDAY
        fprintf('Weekday: Thursday\n');
    elseif e.weekday == com.tinkerforge.BrickletRealTimeClockV2.WEEKDAY_FRIDAY
        fprintf('Weekday: Friday\n');
    elseif e.weekday == com.tinkerforge.BrickletRealTimeClockV2.WEEKDAY_SATURDAY
        fprintf('Weekday: Saturday\n');
    elseif e.weekday == com.tinkerforge.BrickletRealTimeClockV2.WEEKDAY_SUNDAY
        fprintf('Weekday: Sunday\n');
    end

    fprintf('Timestamp: %i\n', e.timestamp);
    fprintf('\n');
end

Simple (Octave)¶

Download (octave_example_simple.m)

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function octave_example_simple()
    more off;

    HOST = "localhost";
    PORT = 4223;
    UID = "XYZ"; % Change XYZ to the UID of your Real-Time Clock Bricklet 2.0

    ipcon = javaObject("com.tinkerforge.IPConnection"); % Create IP connection
    rtc = javaObject("com.tinkerforge.BrickletRealTimeClockV2", UID, ipcon); % Create device object

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

    % Get current date and time
    dateTime = rtc.getDateTime();

    fprintf("Year: %d\n", dateTime.year);
    fprintf("Month: %d\n", dateTime.month);
    fprintf("Day: %d\n", dateTime.day);
    fprintf("Hour: %d\n", dateTime.hour);
    fprintf("Minute: %d\n", dateTime.minute);
    fprintf("Second: %d\n", dateTime.second);
    fprintf("Centisecond: %d\n", dateTime.centisecond);

    if dateTime.weekday == 1
        fprintf("Weekday: Monday\n");
    elseif dateTime.weekday == 2
        fprintf("Weekday: Tuesday\n");
    elseif dateTime.weekday == 3
        fprintf("Weekday: Wednesday\n");
    elseif dateTime.weekday == 4
        fprintf("Weekday: Thursday\n");
    elseif dateTime.weekday == 5
        fprintf("Weekday: Friday\n");
    elseif dateTime.weekday == 6
        fprintf("Weekday: Saturday\n");
    elseif dateTime.weekday == 7
        fprintf("Weekday: Sunday\n");
    end

    fprintf("Timestamp: %d ms\n", java2int(dateTime.timestamp));

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

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

Callback (Octave)¶

Download (octave_example_callback.m)

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function octave_example_callback()
    more off;

    HOST = "localhost";
    PORT = 4223;
    UID = "XYZ"; % Change XYZ to the UID of your Real-Time Clock Bricklet 2.0

    ipcon = javaObject("com.tinkerforge.IPConnection"); % Create IP connection
    rtc = javaObject("com.tinkerforge.BrickletRealTimeClockV2", UID, ipcon); % Create device object

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

    % Register date and time callback to function cb_date_time
    rtc.addDateTimeCallback(@cb_date_time);

    % Set period for date and time callback to 5s (5000ms)
    rtc.setDateTimeCallbackConfiguration(5000);

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

% Callback function for date and time callback
function cb_date_time(e)
    fprintf("Year: %d\n", e.year);
    fprintf("Month: %d\n", e.month);
    fprintf("Day: %d\n", e.day);
    fprintf("Hour: %d\n", e.hour);
    fprintf("Minute: %d\n", e.minute);
    fprintf("Second: %d\n", e.second);
    fprintf("Centisecond: %d\n", e.centisecond);

    if e.weekday == 1
        fprintf("Weekday: Monday\n");
    elseif e.weekday == 2
        fprintf("Weekday: Tuesday\n");
    elseif e.weekday == 3
        fprintf("Weekday: Wednesday\n");
    elseif e.weekday == 4
        fprintf("Weekday: Thursday\n");
    elseif e.weekday == 5
        fprintf("Weekday: Friday\n");
    elseif e.weekday == 6
        fprintf("Weekday: Saturday\n");
    elseif e.weekday == 7
        fprintf("Weekday: Sunday\n");
    end

    fprintf("Timestamp: %d\n", java2int(e.timestamp));
    fprintf("\n");
end

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

Basic Functions¶

class BrickletRealTimeClockV2(String uid, IPConnection ipcon)¶

Parameters:	uid – Type: String ipcon – Type: IPConnection
Returns:	realTimeClockV2 – Type: BrickletRealTimeClockV2

Creates an object with the unique device ID uid.

In MATLAB:

import com.tinkerforge.BrickletRealTimeClockV2;

realTimeClockV2 = BrickletRealTimeClockV2('YOUR_DEVICE_UID', ipcon);

In Octave:

realTimeClockV2 = java_new("com.tinkerforge.BrickletRealTimeClockV2", "YOUR_DEVICE_UID", ipcon);

This object can then be used after the IP Connection is connected.

void BrickletRealTimeClockV2.setDateTime(int year, int month, int day, int hour, int minute, int second, int centisecond, int weekday)¶

Parameters:	year – Type: int, Range: [2000 to 2099] month – Type: int, Range: [1 to 12] day – Type: int, Range: [1 to 31] hour – Type: int, Range: [0 to 23] minute – Type: int, Range: [0 to 59] second – Type: int, Range: [0 to 59] centisecond – Type: int, Range: [0 to 99] weekday – Type: int, Range: See constants

Sets the current date (including weekday) and the current time.

If the backup battery is installed then the real-time clock keeps date and time even if the Bricklet is not powered by a Brick.

The real-time clock handles leap year and inserts the 29th of February accordingly. But leap seconds, time zones and daylight saving time are not handled.

The following constants are available for this function:

For weekday:

• BrickletRealTimeClockV2.WEEKDAY_MONDAY = 1
• BrickletRealTimeClockV2.WEEKDAY_TUESDAY = 2
• BrickletRealTimeClockV2.WEEKDAY_WEDNESDAY = 3
• BrickletRealTimeClockV2.WEEKDAY_THURSDAY = 4
• BrickletRealTimeClockV2.WEEKDAY_FRIDAY = 5
• BrickletRealTimeClockV2.WEEKDAY_SATURDAY = 6
• BrickletRealTimeClockV2.WEEKDAY_SUNDAY = 7

BrickletRealTimeClockV2.DateTime BrickletRealTimeClockV2.getDateTime()¶

Return Object:	year – Type: int, Range: [2000 to 2099] month – Type: int, Range: [1 to 12] day – Type: int, Range: [1 to 31] hour – Type: int, Range: [0 to 23] minute – Type: int, Range: [0 to 59] second – Type: int, Range: [0 to 59] centisecond – Type: int, Range: [0 to 99] weekday – Type: int, Range: See constants timestamp – Type: long, Unit: 1 ms, Range: [-263 to 263 - 1]

Returns the current date (including weekday) and the current time of the real-time.

The timestamp represents the current date and the the current time of the real-time clock converted to milliseconds and is an offset to 2000-01-01 00:00:00.0000.

The following constants are available for this function:

For weekday:

• BrickletRealTimeClockV2.WEEKDAY_MONDAY = 1
• BrickletRealTimeClockV2.WEEKDAY_TUESDAY = 2
• BrickletRealTimeClockV2.WEEKDAY_WEDNESDAY = 3
• BrickletRealTimeClockV2.WEEKDAY_THURSDAY = 4
• BrickletRealTimeClockV2.WEEKDAY_FRIDAY = 5
• BrickletRealTimeClockV2.WEEKDAY_SATURDAY = 6
• BrickletRealTimeClockV2.WEEKDAY_SUNDAY = 7

long BrickletRealTimeClockV2.getTimestamp()¶

Returns:	timestamp – Type: long, Unit: 1 ms, Range: [-263 to 263 - 1]

Returns the current date and the time of the real-time clock converted to milliseconds. The timestamp has an effective resolution of hundredths of a second and is an offset to 2000-01-01 00:00:00.0000.

Advanced Functions¶

void BrickletRealTimeClockV2.setOffset(int offset)¶

Parameters:	offset – Type: int, Unit: 217/100 ppm, Range: [-128 to 127]

Sets the offset the real-time clock should compensate for in 2.17 ppm steps between -277.76 ppm (-128) and +275.59 ppm (127).

The real-time clock time can deviate from the actual time due to the frequency deviation of its 32.768 kHz crystal. Even without compensation (factory default) the resulting time deviation should be at most ±20 ppm (±52.6 seconds per month).

This deviation can be calculated by comparing the same duration measured by the real-time clock (rtc_duration) an accurate reference clock (ref_duration).

For best results the configured offset should be set to 0 ppm first and then a duration of at least 6 hours should be measured.

The new offset (new_offset) can be calculated from the currently configured offset (current_offset) and the measured durations as follow:

new_offset = current_offset - round(1000000 * (rtc_duration - ref_duration) / rtc_duration / 2.17)

If you want to calculate the offset, then we recommend using the calibration dialog in Brick Viewer, instead of doing it manually.

The offset is saved in the EEPROM of the Bricklet and only needs to be configured once.

int BrickletRealTimeClockV2.getOffset()¶

Returns:	offset – Type: int, Unit: 217/100 ppm, Range: [-128 to 127]

Returns the offset as set by setOffset().

BrickletRealTimeClockV2.SPITFPErrorCount BrickletRealTimeClockV2.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.

void BrickletRealTimeClockV2.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:

• BrickletRealTimeClockV2.STATUS_LED_CONFIG_OFF = 0
• BrickletRealTimeClockV2.STATUS_LED_CONFIG_ON = 1
• BrickletRealTimeClockV2.STATUS_LED_CONFIG_SHOW_HEARTBEAT = 2
• BrickletRealTimeClockV2.STATUS_LED_CONFIG_SHOW_STATUS = 3

int BrickletRealTimeClockV2.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:

• BrickletRealTimeClockV2.STATUS_LED_CONFIG_OFF = 0
• BrickletRealTimeClockV2.STATUS_LED_CONFIG_ON = 1
• BrickletRealTimeClockV2.STATUS_LED_CONFIG_SHOW_HEARTBEAT = 2
• BrickletRealTimeClockV2.STATUS_LED_CONFIG_SHOW_STATUS = 3

int BrickletRealTimeClockV2.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 BrickletRealTimeClockV2.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!

BrickletRealTimeClockV2.Identity BrickletRealTimeClockV2.getIdentity()¶

Return Object:

uid – Type: String, Length: up to 8 connectedUid – Type: String, Length: up to 8 position – Type: char, Range: ['a' to 'h', 'z'] hardwareVersion – Type: short[], Length: 3 1: major – Type: short, Range: [0 to 255] 2: minor – Type: short, Range: [0 to 255] 3: revision – Type: short, Range: [0 to 255] firmwareVersion – Type: short[], Length: 3 1: major – Type: short, Range: [0 to 255] 2: minor – Type: short, Range: [0 to 255] 3: revision – Type: short, 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). A Bricklet connected to an Isolator Bricklet is always at 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 BrickletRealTimeClockV2.setDateTimeCallbackConfiguration(long period)¶

Parameters:	period – Type: long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 0

Sets the period with which the DateTimeCallback callback is triggered periodically. A value of 0 turns the callback off.

long BrickletRealTimeClockV2.getDateTimeCallbackConfiguration()¶

Returns:	period – Type: long, Unit: 1 ms, Range: [0 to 232 - 1], Default: 0

Returns the period as set by setDateTimeCallbackConfiguration().

void BrickletRealTimeClockV2.setAlarm(int month, int day, int hour, int minute, int second, int weekday, int interval)¶

Parameters:

month – Type: int, Range: [-1, 1 to 12] with constants day – Type: int, Range: [-1, 1 to 31] with constants hour – Type: int, Range: [-1, 0 to 23] with constants minute – Type: int, Range: [-1, 0 to 59] with constants second – Type: int, Range: [-1, 0 to 59] with constants weekday – Type: int, Range: [-1, 1 to 7] with constants interval – Type: int, Unit: 1 s, Range: [-1, 1 to 231 - 1] with constants

Configures a repeatable alarm. The AlarmCallback callback is triggered if the current date and time matches the configured alarm.

Setting a parameter to -1 means that it should be disabled and doesn't take part in the match. Setting all parameters to -1 disables the alarm completely.

For example, to make the alarm trigger every day at 7:30 AM it can be configured as (-1, -1, 7, 30, -1, -1, -1). The hour is set to match 7 and the minute is set to match 30. The alarm is triggered if all enabled parameters match.

The interval has a special role. It allows to make the alarm reconfigure itself. This is useful if you need a repeated alarm that cannot be expressed by matching the current date and time. For example, to make the alarm trigger every 23 seconds it can be configured as (-1, -1, -1, -1, -1, -1, 23). Internally the Bricklet will take the current date and time, add 23 seconds to it and set the result as its alarm. The first alarm will be triggered 23 seconds after the call. Because the interval is not -1, the Bricklet will do the same again internally, take the current date and time, add 23 seconds to it and set that as its alarm. This results in a repeated alarm that triggers every 23 seconds.

The interval can also be used in combination with the other parameters. For example, configuring the alarm as (-1, -1, 7, 30, -1, -1, 300) results in an alarm that triggers every day at 7:30 AM and is then repeated every 5 minutes.

The following constants are available for this function:

For month:

• BrickletRealTimeClockV2.ALARM_MATCH_DISABLED = -1

For day:

• BrickletRealTimeClockV2.ALARM_MATCH_DISABLED = -1

For hour:

• BrickletRealTimeClockV2.ALARM_MATCH_DISABLED = -1

For minute:

• BrickletRealTimeClockV2.ALARM_MATCH_DISABLED = -1

For second:

• BrickletRealTimeClockV2.ALARM_MATCH_DISABLED = -1

For weekday:

• BrickletRealTimeClockV2.ALARM_MATCH_DISABLED = -1

For interval:

• BrickletRealTimeClockV2.ALARM_INTERVAL_DISABLED = -1

BrickletRealTimeClockV2.Alarm BrickletRealTimeClockV2.getAlarm()¶

Return Object:

month – Type: int, Range: [-1, 1 to 12] with constants day – Type: int, Range: [-1, 1 to 31] with constants hour – Type: int, Range: [-1, 0 to 23] with constants minute – Type: int, Range: [-1, 0 to 59] with constants second – Type: int, Range: [-1, 0 to 59] with constants weekday – Type: int, Range: [-1, 1 to 7] with constants interval – Type: int, Unit: 1 s, Range: [-1, 1 to 231 - 1] with constants

Returns the alarm configuration as set by setAlarm().

The following constants are available for this function:

For month:

• BrickletRealTimeClockV2.ALARM_MATCH_DISABLED = -1

For day:

• BrickletRealTimeClockV2.ALARM_MATCH_DISABLED = -1

For hour:

• BrickletRealTimeClockV2.ALARM_MATCH_DISABLED = -1

For minute:

• BrickletRealTimeClockV2.ALARM_MATCH_DISABLED = -1

For second:

• BrickletRealTimeClockV2.ALARM_MATCH_DISABLED = -1

For weekday:

• BrickletRealTimeClockV2.ALARM_MATCH_DISABLED = -1

For interval:

• BrickletRealTimeClockV2.ALARM_INTERVAL_DISABLED = -1

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.

callback BrickletRealTimeClockV2.DateTimeCallback¶

Event Object:	year – Type: int, Range: [2000 to 2099] month – Type: int, Range: [1 to 12] day – Type: int, Range: [1 to 31] hour – Type: int, Range: [0 to 23] minute – Type: int, Range: [0 to 59] second – Type: int, Range: [0 to 59] centisecond – Type: int, Range: [0 to 99] weekday – Type: int, Range: See constants timestamp – Type: long, Unit: 1 ms, Range: [-263 to 263 - 1]

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

The following constants are available for this function:

For weekday:

• BrickletRealTimeClockV2.WEEKDAY_MONDAY = 1
• BrickletRealTimeClockV2.WEEKDAY_TUESDAY = 2
• BrickletRealTimeClockV2.WEEKDAY_WEDNESDAY = 3
• BrickletRealTimeClockV2.WEEKDAY_THURSDAY = 4
• BrickletRealTimeClockV2.WEEKDAY_FRIDAY = 5
• BrickletRealTimeClockV2.WEEKDAY_SATURDAY = 6
• BrickletRealTimeClockV2.WEEKDAY_SUNDAY = 7

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 addDateTimeCallback() function. An added callback function can be removed with the removeDateTimeCallback() function.

callback BrickletRealTimeClockV2.AlarmCallback¶

Event Object:	year – Type: int, Range: [2000 to 2099] month – Type: int, Range: [1 to 12] day – Type: int, Range: [1 to 31] hour – Type: int, Range: [0 to 23] minute – Type: int, Range: [0 to 59] second – Type: int, Range: [0 to 59] centisecond – Type: int, Range: [0 to 99] weekday – Type: int, Range: See constants timestamp – Type: long, Unit: 1 ms, Range: [-263 to 263 - 1]

This callback is triggered every time the current date and time matches the configured alarm (see setAlarm()). The parameters are the same as for getDateTime().

The following constants are available for this function:

For weekday:

• BrickletRealTimeClockV2.WEEKDAY_MONDAY = 1
• BrickletRealTimeClockV2.WEEKDAY_TUESDAY = 2
• BrickletRealTimeClockV2.WEEKDAY_WEDNESDAY = 3
• BrickletRealTimeClockV2.WEEKDAY_THURSDAY = 4
• BrickletRealTimeClockV2.WEEKDAY_FRIDAY = 5
• BrickletRealTimeClockV2.WEEKDAY_SATURDAY = 6
• BrickletRealTimeClockV2.WEEKDAY_SUNDAY = 7

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 addAlarmCallback() function. An added callback function can be removed with the removeAlarmCallback() 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.

short[] BrickletRealTimeClockV2.getAPIVersion()¶

Return Object:	apiVersion – Type: short[], Length: 3 1: major – Type: short, Range: [0 to 255] 2: minor – Type: short, Range: [0 to 255] 3: revision – Type: short, 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 BrickletRealTimeClockV2.getResponseExpected(byte functionId)¶

Parameters:	functionId – Type: byte, 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 sent and errors are silently ignored, because they cannot be detected.

The following constants are available for this function:

For functionId:

• BrickletRealTimeClockV2.FUNCTION_SET_DATE_TIME = 1
• BrickletRealTimeClockV2.FUNCTION_SET_OFFSET = 4
• BrickletRealTimeClockV2.FUNCTION_SET_DATE_TIME_CALLBACK_CONFIGURATION = 6
• BrickletRealTimeClockV2.FUNCTION_SET_ALARM = 8
• BrickletRealTimeClockV2.FUNCTION_SET_WRITE_FIRMWARE_POINTER = 237
• BrickletRealTimeClockV2.FUNCTION_SET_STATUS_LED_CONFIG = 239
• BrickletRealTimeClockV2.FUNCTION_RESET = 243
• BrickletRealTimeClockV2.FUNCTION_WRITE_UID = 248

void BrickletRealTimeClockV2.setResponseExpected(byte functionId, boolean responseExpected)¶

Parameters:	functionId – Type: byte, 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 sent and errors are silently ignored, because they cannot be detected.

The following constants are available for this function:

For functionId:

• BrickletRealTimeClockV2.FUNCTION_SET_DATE_TIME = 1
• BrickletRealTimeClockV2.FUNCTION_SET_OFFSET = 4
• BrickletRealTimeClockV2.FUNCTION_SET_DATE_TIME_CALLBACK_CONFIGURATION = 6
• BrickletRealTimeClockV2.FUNCTION_SET_ALARM = 8
• BrickletRealTimeClockV2.FUNCTION_SET_WRITE_FIRMWARE_POINTER = 237
• BrickletRealTimeClockV2.FUNCTION_SET_STATUS_LED_CONFIG = 239
• BrickletRealTimeClockV2.FUNCTION_RESET = 243
• BrickletRealTimeClockV2.FUNCTION_WRITE_UID = 248

void BrickletRealTimeClockV2.setResponseExpectedAll(boolean responseExpected)¶

Parameters:	responseExpected – Type: boolean

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

Internal Functions¶

Internal functions are used for maintenance tasks such as flashing a new firmware of changing the UID of a Bricklet. These task should be performed using Brick Viewer instead of using the internal functions directly.

int BrickletRealTimeClockV2.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:

• BrickletRealTimeClockV2.BOOTLOADER_MODE_BOOTLOADER = 0
• BrickletRealTimeClockV2.BOOTLOADER_MODE_FIRMWARE = 1
• BrickletRealTimeClockV2.BOOTLOADER_MODE_BOOTLOADER_WAIT_FOR_REBOOT = 2
• BrickletRealTimeClockV2.BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_REBOOT = 3
• BrickletRealTimeClockV2.BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_ERASE_AND_REBOOT = 4

For status:

• BrickletRealTimeClockV2.BOOTLOADER_STATUS_OK = 0
• BrickletRealTimeClockV2.BOOTLOADER_STATUS_INVALID_MODE = 1
• BrickletRealTimeClockV2.BOOTLOADER_STATUS_NO_CHANGE = 2
• BrickletRealTimeClockV2.BOOTLOADER_STATUS_ENTRY_FUNCTION_NOT_PRESENT = 3
• BrickletRealTimeClockV2.BOOTLOADER_STATUS_DEVICE_IDENTIFIER_INCORRECT = 4
• BrickletRealTimeClockV2.BOOTLOADER_STATUS_CRC_MISMATCH = 5

int BrickletRealTimeClockV2.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:

• BrickletRealTimeClockV2.BOOTLOADER_MODE_BOOTLOADER = 0
• BrickletRealTimeClockV2.BOOTLOADER_MODE_FIRMWARE = 1
• BrickletRealTimeClockV2.BOOTLOADER_MODE_BOOTLOADER_WAIT_FOR_REBOOT = 2
• BrickletRealTimeClockV2.BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_REBOOT = 3
• BrickletRealTimeClockV2.BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_ERASE_AND_REBOOT = 4

void BrickletRealTimeClockV2.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 BrickletRealTimeClockV2.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 BrickletRealTimeClockV2.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 BrickletRealTimeClockV2.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.

Constants¶

int BrickletRealTimeClockV2.DEVICE_IDENTIFIER¶

This constant is used to identify a Real-Time Clock Bricklet 2.0.

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 BrickletRealTimeClockV2.DEVICE_DISPLAY_NAME¶

This constant represents the human readable name of a Real-Time Clock Bricklet 2.0.