Struct Current25Bricklet

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pub struct Current25Bricklet { /* private fields */ }

Expand description

Measures AC/DC current between -25A and +25A

Implementations§

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pub fn new(uid: Uid, connection: AsyncIpConnection) -> Current25Bricklet

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: Current25BrickletFunction, ) -> 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 sent 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: Current25BrickletFunction, 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 sent 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_api_version(&self) -> [u8; 3]

Returns the version of the API definition (major, minor, revision) 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.

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pub async fn get_current_callback_receiver(&mut self) -> impl Stream<Item = i16>

This receiver is triggered periodically with the period that is set by set_current_callback_period. The parameter is the current of the sensor.

The get_current_callback_receiver receiver is only triggered if the current has changed since the last triggering.

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pub async fn get_analog_value_callback_receiver( &mut self, ) -> impl Stream<Item = u16>

This receiver is triggered periodically with the period that is set by [set_analog_value_callback_period]. The parameter is the analog value of the sensor.

The [get_analog_value_callback_receiver] receiver is only triggered if the current has changed since the last triggering.

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pub async fn get_current_reached_callback_receiver( &mut self, ) -> impl Stream<Item = i16>

This receiver is triggered when the threshold as set by [set_current_callback_threshold] is reached. The parameter is the current of the sensor.

If the threshold keeps being reached, the receiver is triggered periodically with the period as set by [set_debounce_period].

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pub async fn get_analog_value_reached_callback_receiver( &mut self, ) -> impl Stream<Item = u16>

This receiver is triggered when the threshold as set by [set_analog_value_callback_threshold] is reached. The parameter is the analog value of the sensor.

If the threshold keeps being reached, the receiver is triggered periodically with the period as set by [set_debounce_period].

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pub async fn get_over_current_callback_receiver( &mut self, ) -> impl Stream<Item = ()>

This receiver is triggered when an over current is measured (see [is_over_current]).

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pub async fn get_current(&mut self) -> Result<i16, TinkerforgeError>

Returns the current of the sensor.

If you want to get the current periodically, it is recommended to use the [get_current_callback_receiver] receiver and set the period with [set_current_callback_period].

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pub async fn calibrate(&mut self) -> Result<(), TinkerforgeError>

Calibrates the 0 value of the sensor. You have to call this function when there is no current present.

The zero point of the current sensor is depending on the exact properties of the analog-to-digital converter, the length of the Bricklet cable and the temperature. Thus, if you change the Brick or the environment in which the Bricklet is used, you might have to recalibrate.

The resulting calibration will be saved on the EEPROM of the Current Bricklet.

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pub async fn is_over_current(&mut self) -> Result<bool, TinkerforgeError>

Returns true if more than 25A were measured.

§Note

To reset this value you have to power cycle the Bricklet.

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pub async fn get_analog_value(&mut self) -> Result<u16, TinkerforgeError>

Returns the value as read by a 12-bit analog-to-digital converter.

§Note

The value returned by [get_current] is averaged over several samples to yield less noise, while [get_analog_value] gives back raw unfiltered analog values. The only reason to use [get_analog_value] is, if you need the full resolution of the analog-to-digital converter.

If you want the analog value periodically, it is recommended to use the [get_analog_value_callback_receiver] receiver and set the period with [set_analog_value_callback_period].

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pub async fn set_current_callback_period( &mut self, period: u32, ) -> Result<(), TinkerforgeError>

Sets the period with which the [get_current_callback_receiver] receiver is triggered periodically. A value of 0 turns the receiver off.

The [get_current_callback_receiver] receiver is only triggered if the current has changed since the last triggering.

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pub async fn get_current_callback_period( &mut self, ) -> Result<u32, TinkerforgeError>

Returns the period as set by [set_current_callback_period].

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pub async fn set_analog_value_callback_period( &mut self, period: u32, ) -> Result<(), TinkerforgeError>

Sets the period with which the [get_analog_value_callback_receiver] receiver is triggered periodically. A value of 0 turns the receiver off.

The [get_analog_value_callback_receiver] receiver is only triggered if the analog value has changed since the last triggering.

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pub async fn get_analog_value_callback_period( &mut self, ) -> Result<u32, TinkerforgeError>

Returns the period as set by [set_analog_value_callback_period].

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pub async fn set_current_callback_threshold( &mut self, option: char, min: i16, max: i16, ) -> Result<(), TinkerforgeError>

Sets the thresholds for the [get_current_reached_callback_receiver] receiver.

The following options are possible:

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

Associated constants:

CURRENT25_BRICKLET_THRESHOLD_OPTION_OFF
CURRENT25_BRICKLET_THRESHOLD_OPTION_OUTSIDE
CURRENT25_BRICKLET_THRESHOLD_OPTION_INSIDE
CURRENT25_BRICKLET_THRESHOLD_OPTION_SMALLER
CURRENT25_BRICKLET_THRESHOLD_OPTION_GREATER

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pub async fn get_current_callback_threshold( &mut self, ) -> Result<CurrentCallbackThreshold, TinkerforgeError>

Returns the threshold as set by [set_current_callback_threshold].

Associated constants:

CURRENT25_BRICKLET_THRESHOLD_OPTION_OFF
CURRENT25_BRICKLET_THRESHOLD_OPTION_OUTSIDE
CURRENT25_BRICKLET_THRESHOLD_OPTION_INSIDE
CURRENT25_BRICKLET_THRESHOLD_OPTION_SMALLER
CURRENT25_BRICKLET_THRESHOLD_OPTION_GREATER

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pub async fn set_analog_value_callback_threshold( &mut self, option: char, min: u16, max: u16, ) -> Result<(), TinkerforgeError>

Sets the thresholds for the [get_analog_value_reached_callback_receiver] receiver.

The following options are possible:

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