Struct tinkerforge::piezo_speaker_bricklet::PiezoSpeakerBricklet

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pub struct PiezoSpeakerBricklet { /* private fields */ }

Expand description

Creates beep with configurable frequency

Implementations

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pub fn new(uid: &str, ip_connection: &IpConnection) -> PiezoSpeakerBricklet

Creates an object with the unique device ID uid. This object can then be used after the IP Connection ip_connection is connected.

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pub fn get_response_expected(
&mut self,
fun: PiezoSpeakerBrickletFunction
) -> Result<bool, GetResponseExpectedError>

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 set_response_expected. 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.

See set_response_expected for the list of function ID constants available for this function.

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pub fn set_response_expected(
 &mut self,
 fun: PiezoSpeakerBrickletFunction,
 response_expected: bool
) -> Result<(), SetResponseExpectedError>

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.

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pub fn set_response_expected_all(&mut self, response_expected: bool)

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

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pub fn get_beep_finished_callback_receiver(
&self
) -> ConvertingCallbackReceiver<()>

This receiver is triggered if a beep set by Beep is finished

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pub fn get_morse_code_finished_callback_receiver(
&self
) -> ConvertingCallbackReceiver<()>

This receiver is triggered if the playback of the morse code set by Morse Code is finished.

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pub fn beep(&self, duration: u32, frequency: u16) -> ConvertingReceiver<()>

Beeps with the given frequency for the duration in ms. For example: If you set a duration of 1000, with a frequency value of 2000 the piezo buzzer will beep for one second with a frequency of approximately 2 kHz.

.. versionchanged:: 2.0.2$nbsp;(Plugin) A duration of 0 stops the current beep if any, the frequency parameter is ignored. A duration of 4294967295 results in an infinite beep.

The frequency parameter can be set between 585 and 7100.

The Piezo Speaker Bricklet can only approximate the frequency, it will play the best possible match by applying the calibration (see Calibrate).

Associated constants:

PIEZO_SPEAKERBRICKLET_BEEP_DURATION_OFF
PIEZO_SPEAKERBRICKLET_BEEP_DURATION_INFINITE

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pub fn morse_code(&self, morse: String, frequency: u16) -> ConvertingReceiver<()>

Sets morse code that will be played by the piezo buzzer. The morse code is given as a string consisting of . (dot), - (minus) and (space) for dits, dahs and pauses. Every other character is ignored. The second parameter is the frequency (see Beep).

For example: If you set the string …—…, the piezo buzzer will beep nine times with the durations short short short long long long short short short.

The maximum string size is 60.

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pub fn calibrate(&self) -> ConvertingReceiver<bool>

The Piezo Speaker Bricklet can play 512 different tones. This function plays each tone and measures the exact frequency back. The result is a mapping between setting value and frequency. This mapping is stored in the EEPROM and loaded on startup.

The Bricklet should come calibrated, you only need to call this function (once) every time you reflash the Bricklet plugin.

Returns true after the calibration finishes.

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