Struct tinkerforge::sound_pressure_level_bricklet::SoundPressureLevelBricklet

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pub struct SoundPressureLevelBricklet { /* private fields */ }

Expand description

Measures Sound Pressure Level in dB(A/B/C/D/Z)

Implementations

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

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: SoundPressureLevelBrickletFunction
) -> 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: SoundPressureLevelBrickletFunction,
 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_decibel_callback_receiver(&self) -> ConvertingCallbackReceiver<u16>

This receiver is triggered periodically according to the configuration set by Set Decibel Receiver Configuration.

The parameter is the same as Get Decibel.

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pub fn get_spectrum_low_level_callback_receiver(
&self
) -> ConvertingCallbackReceiver<SpectrumLowLevelEvent>

This receiver is triggered periodically according to the configuration set by Set Spectrum Receiver Configuration.

The parameter is the same as Get Spectrum.

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pub fn get_spectrum_callback_receiver(
&self
) -> ConvertingHighLevelCallbackReceiver<u16, SpectrumResult, SpectrumLowLevelEvent> ⓘ

This receiver is triggered periodically according to the configuration set by Set Spectrum Receiver Configuration.

The parameter is the same as Get Spectrum.

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pub fn get_decibel(&self) -> ConvertingReceiver<u16>

Returns the measured sound pressure in decibels. The values are given in dB/10 (tenths dB).

The Bricklet supports the weighting standards dB(A), dB(B), dB(C), dB(D), dB(Z) and ITU-R 468. You can configure the weighting with Set Configuration.

By default dB(A) will be used.

If you want to get the value periodically, it is recommended to use the get_decibel_callback_receiver receiver. You can set the receiver configuration with Set Decibel Receiver Configuration.

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pub fn set_decibel_callback_configuration(
 &self,
 period: u32,
 value_has_to_change: bool,
 option: char,
 min: u16,
 max: u16
) -> ConvertingReceiver<()>

The period in ms is the period with which the get_decibel_callback_receiver receiver is triggered periodically. A value of 0 turns the receiver off.

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

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

It is furthermore possible to constrain the receiver with thresholds.

The option-parameter together with min/max sets a threshold for the get_decibel_callback_receiver receiver.

The following options are possible:

Option	Description
‘x’	Threshold is turned off
‘o’	Threshold is triggered when the value is outside the min and max values
‘i’	Threshold is triggered when the value is inside or equal to the min and max values
‘<’	Threshold is triggered when the value is smaller than the min value (max is ignored)
‘>’	Threshold is triggered when the value is greater than the min value (max is ignored)

If the option is set to ‘x’ (threshold turned off) the receiver is triggered with the fixed period.

The default value is (0, false, ‘x’, 0, 0).

Associated constants:

SOUND_PRESSURE_LEVELBRICKLET_THRESHOLD_OPTION_OFF
SOUND_PRESSURE_LEVELBRICKLET_THRESHOLD_OPTION_OUTSIDE
SOUND_PRESSURE_LEVELBRICKLET_THRESHOLD_OPTION_INSIDE
SOUND_PRESSURE_LEVELBRICKLET_THRESHOLD_OPTION_SMALLER
SOUND_PRESSURE_LEVELBRICKLET_THRESHOLD_OPTION_GREATER

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pub fn get_decibel_callback_configuration(
&self
) -> ConvertingReceiver<DecibelCallbackConfiguration>

Returns the receiver configuration as set by Set Decibel Receiver Configuration.

Associated constants:

SOUND_PRESSURE_LEVELBRICKLET_THRESHOLD_OPTION_OFF
SOUND_PRESSURE_LEVELBRICKLET_THRESHOLD_OPTION_OUTSIDE
SOUND_PRESSURE_LEVELBRICKLET_THRESHOLD_OPTION_INSIDE
SOUND_PRESSURE_LEVELBRICKLET_THRESHOLD_OPTION_SMALLER
SOUND_PRESSURE_LEVELBRICKLET_THRESHOLD_OPTION_GREATER

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pub fn get_spectrum_low_level(&self) -> ConvertingReceiver<SpectrumLowLevel>

Returns the frequency spectrum. The length of the spectrum is between 512 (FFT size 1024) and 64 (FFT size 128). See Set Configuration.

Each array element is one bin of the FFT. The first bin is always the DC offset and the other bins have a size between 40Hz (FFT size 1024) and 320Hz (FFT size 128).

In sum the frequency of the spectrum always has a range from 0 to 20480Hz (the FFT is applied to samples with a frequency of 40960Hz).

The returned data is already equalized, which means that the microphone frequency response is compensated and the weighting function is applied (see Set Configuration for the available weighting standards). Use dB(Z) if you need the unaltered spectrum.

The values are not in dB form yet. If you want a proper dB scale of the spectrum you have to apply the formula f(x) = 20*log10(max(1, x/sqrt(2))) on each value.

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pub fn get_spectrum(&self) -> Result<Vec<u16>, BrickletRecvTimeoutError>

Returns the frequency spectrum. The length of the spectrum is between 512 (FFT size 1024) and 64 (FFT size 128). See Set Configuration.

Each array element is one bin of the FFT. The first bin is always the DC offset and the other bins have a size between 40Hz (FFT size 1024) and 320Hz (FFT size 128).

In sum the frequency of the spectrum always has a range from 0 to 20480Hz (the FFT is applied to samples with a frequency of 40960Hz).

The returned data is already equalized, which means that the microphone frequency response is compensated and the weighting function is applied (see Set Configuration for the available weighting standards). Use dB(Z) if you need the unaltered spectrum.

The values are not in dB form yet. If you want a proper dB scale of the spectrum you have to apply the formula f(x) = 20*log10(max(1, x/sqrt(2))) on each value.

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pub fn set_spectrum_callback_configuration(
&self,
period: u32
) -> ConvertingReceiver<()>

The period in ms is the period with which the get_spectrum_callback_receiver receiver is triggered periodically. A value of 0 turns the receiver off.

Every new measured spectrum will be send at most once. Set the period to 1 to make sure that you get every spectrum.

The default value is 0.

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pub fn get_spectrum_callback_configuration(&self) -> ConvertingReceiver<u32>

Returns the receiver configuration as set by Get Spectrum Receiver Configuration.

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pub fn set_configuration(
 &self,
 fft_size: u8,
 weighting: u8
) -> ConvertingReceiver<()>

Sets the Sound Pressure Level Bricklet configuration.

With different FFT sizes the Bricklet has a different amount of samples per second and the size of the FFT bins changes. The higher the FFT size the more precise is the result of the dB(X) calculation.

Available FFT sizes are:

1024: 512 bins, 10 samples per second, each bin has size 40Hz
512: 256 bins, 20 samples per second, each bin has size 80Hz
256: 128 bins, 40 samples per second, each bin has size 160Hz
128: 64 bins, 80 samples per second, each bin has size 320Hz

The Bricklet supports different weighting functions. You can choose between dB(A), dB(B), dB(C), dB(D), dB(Z) and ITU-R 468.

dB(A/B/C/D) are the standard dB weighting curves. dB(A) is often used to measure volumes at concerts etc. dB(Z) has a flat response, no weighting is applied. ITU-R 468 is an ITU weighting standard mostly used in the UK and Europe.

The defaults are FFT size 1024 and weighting standard dB(A).

Associated constants:

SOUND_PRESSURE_LEVELBRICKLET_FFT_SIZE_128
SOUND_PRESSURE_LEVELBRICKLET_FFT_SIZE_256
SOUND_PRESSURE_LEVELBRICKLET_FFT_SIZE_512
SOUND_PRESSURE_LEVELBRICKLET_FFT_SIZE_1024
SOUND_PRESSURE_LEVELBRICKLET_WEIGHTING_A
SOUND_PRESSURE_LEVELBRICKLET_WEIGHTING_B
SOUND_PRESSURE_LEVELBRICKLET_WEIGHTING_C
SOUND_PRESSURE_LEVELBRICKLET_WEIGHTING_D
SOUND_PRESSURE_LEVELBRICKLET_WEIGHTING_Z
SOUND_PRESSURE_LEVELBRICKLET_WEIGHTING_ITU_R_468

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pub fn get_configuration(&self) -> ConvertingReceiver<Configuration>

Returns the configuration as set by Set Configuration.

Associated constants:

SOUND_PRESSURE_LEVELBRICKLET_FFT_SIZE_128
SOUND_PRESSURE_LEVELBRICKLET_FFT_SIZE_256
SOUND_PRESSURE_LEVELBRICKLET_FFT_SIZE_512
SOUND_PRESSURE_LEVELBRICKLET_FFT_SIZE_1024
SOUND_PRESSURE_LEVELBRICKLET_WEIGHTING_A
SOUND_PRESSURE_LEVELBRICKLET_WEIGHTING_B
SOUND_PRESSURE_LEVELBRICKLET_WEIGHTING_C
SOUND_PRESSURE_LEVELBRICKLET_WEIGHTING_D
SOUND_PRESSURE_LEVELBRICKLET_WEIGHTING_Z
SOUND_PRESSURE_LEVELBRICKLET_WEIGHTING_ITU_R_468

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pub fn get_spitfp_error_count(&self) -> ConvertingReceiver<SpitfpErrorCount>

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.

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pub fn set_bootloader_mode(&self, mode: u8) -> ConvertingReceiver<u8>

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.

Associated constants:

SOUND_PRESSURE_LEVELBRICKLET_BOOTLOADER_MODE_BOOTLOADER
SOUND_PRESSURE_LEVELBRICKLET_BOOTLOADER_MODE_FIRMWARE
SOUND_PRESSURE_LEVELBRICKLET_BOOTLOADER_MODE_BOOTLOADER_WAIT_FOR_REBOOT
SOUND_PRESSURE_LEVELBRICKLET_BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_REBOOT
SOUND_PRESSURE_LEVELBRICKLET_BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_ERASE_AND_REBOOT
SOUND_PRESSURE_LEVELBRICKLET_BOOTLOADER_STATUS_OK
SOUND_PRESSURE_LEVELBRICKLET_BOOTLOADER_STATUS_INVALID_MODE
SOUND_PRESSURE_LEVELBRICKLET_BOOTLOADER_STATUS_NO_CHANGE
SOUND_PRESSURE_LEVELBRICKLET_BOOTLOADER_STATUS_ENTRY_FUNCTION_NOT_PRESENT
SOUND_PRESSURE_LEVELBRICKLET_BOOTLOADER_STATUS_DEVICE_IDENTIFIER_INCORRECT
SOUND_PRESSURE_LEVELBRICKLET_BOOTLOADER_STATUS_CRC_MISMATCH

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pub fn get_bootloader_mode(&self) -> ConvertingReceiver<u8>

Returns the current bootloader mode, see Set Bootloader Mode.

Associated constants:

SOUND_PRESSURE_LEVELBRICKLET_BOOTLOADER_MODE_BOOTLOADER
SOUND_PRESSURE_LEVELBRICKLET_BOOTLOADER_MODE_FIRMWARE
SOUND_PRESSURE_LEVELBRICKLET_BOOTLOADER_MODE_BOOTLOADER_WAIT_FOR_REBOOT
SOUND_PRESSURE_LEVELBRICKLET_BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_REBOOT
SOUND_PRESSURE_LEVELBRICKLET_BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_ERASE_AND_REBOOT

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pub fn set_write_firmware_pointer(&self, pointer: u32) -> ConvertingReceiver<()>

Sets the firmware pointer for Write Firmware. 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.

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pub fn write_firmware(&self, data: [u8; 64]) -> ConvertingReceiver<u8>

Writes 64 Bytes of firmware at the position as written by Set Write Firmware Pointer 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.

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pub fn set_status_led_config(&self, config: u8) -> ConvertingReceiver<()>

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.

Associated constants:

SOUND_PRESSURE_LEVELBRICKLET_STATUS_LED_CONFIG_OFF
SOUND_PRESSURE_LEVELBRICKLET_STATUS_LED_CONFIG_ON
SOUND_PRESSURE_LEVELBRICKLET_STATUS_LED_CONFIG_SHOW_HEARTBEAT
SOUND_PRESSURE_LEVELBRICKLET_STATUS_LED_CONFIG_SHOW_STATUS

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pub fn get_status_led_config(&self) -> ConvertingReceiver<u8>

Returns the configuration as set by Set Status LED Config

Associated constants:

SOUND_PRESSURE_LEVELBRICKLET_STATUS_LED_CONFIG_OFF
SOUND_PRESSURE_LEVELBRICKLET_STATUS_LED_CONFIG_ON
SOUND_PRESSURE_LEVELBRICKLET_STATUS_LED_CONFIG_SHOW_HEARTBEAT
SOUND_PRESSURE_LEVELBRICKLET_STATUS_LED_CONFIG_SHOW_STATUS

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pub fn get_chip_temperature(&self) -> ConvertingReceiver<i16>

Returns the temperature in °C 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.

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