This is the description of the Rust API bindings for the Accelerometer Bricklet 2.0. General information and technical specifications for the Accelerometer Bricklet 2.0 are summarized in its hardware description.
An installation guide for the Rust API bindings is part of their general description. Additional documentation can be found on docs.rs.
The example code below is Public Domain (CC0 1.0).
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 | use std::{error::Error, io};
use tinkerforge::{accelerometer_v2_bricklet::*, ip_connection::IpConnection};
const HOST: &str = "localhost";
const PORT: u16 = 4223;
const UID: &str = "XYZ"; // Change XYZ to the UID of your Accelerometer Bricklet 2.0.
fn main() -> Result<(), Box<dyn Error>> {
let ipcon = IpConnection::new(); // Create IP connection.
let a = AccelerometerV2Bricklet::new(UID, &ipcon); // Create device object.
ipcon.connect((HOST, PORT)).recv()??; // Connect to brickd.
// Don't use device before ipcon is connected.
// Get current acceleration.
let acceleration = a.get_acceleration().recv()?;
println!("Acceleration [X]: {} g", acceleration.x as f32 / 10000.0);
println!("Acceleration [Y]: {} g", acceleration.y as f32 / 10000.0);
println!("Acceleration [Z]: {} g", acceleration.z as f32 / 10000.0);
println!("Press enter to exit.");
let mut _input = String::new();
io::stdin().read_line(&mut _input)?;
ipcon.disconnect();
Ok(())
}
|
Download (example_callback.rs)
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 | use std::{error::Error, io, thread};
use tinkerforge::{accelerometer_v2_bricklet::*, ip_connection::IpConnection};
const HOST: &str = "localhost";
const PORT: u16 = 4223;
const UID: &str = "XYZ"; // Change XYZ to the UID of your Accelerometer Bricklet 2.0.
fn main() -> Result<(), Box<dyn Error>> {
let ipcon = IpConnection::new(); // Create IP connection.
let a = AccelerometerV2Bricklet::new(UID, &ipcon); // Create device object.
ipcon.connect((HOST, PORT)).recv()??; // Connect to brickd.
// Don't use device before ipcon is connected.
let acceleration_receiver = a.get_acceleration_callback_receiver();
// Spawn thread to handle received callback messages.
// This thread ends when the `a` object
// is dropped, so there is no need for manual cleanup.
thread::spawn(move || {
for acceleration in acceleration_receiver {
println!("Acceleration [X]: {} g", acceleration.x as f32 / 10000.0);
println!("Acceleration [Y]: {} g", acceleration.y as f32 / 10000.0);
println!("Acceleration [Z]: {} g", acceleration.z as f32 / 10000.0);
println!();
}
});
// Set period for acceleration callback to 1s (1000ms).
a.set_acceleration_callback_configuration(1000, false);
println!("Press enter to exit.");
let mut _input = String::new();
io::stdin().read_line(&mut _input)?;
ipcon.disconnect();
Ok(())
}
|
To allow non-blocking usage, nearly every function of the Rust bindings returns a wrapper around a mpsc::Receiver. To block until the function has finished and get your result, call one of the receiver's recv variants. Those return either the result sent by the device, or any error occurred.
Functions returning a result directly will block until the device has finished processing the request.
All functions listed below are thread-safe, those which return a receiver are lock-free.
AccelerometerV2Bricklet::
new
(uid: &str, ip_connection: &IpConnection) → AccelerometerV2Bricklet¶Parameters: |
|
---|---|
Returns: |
|
Creates a new AccelerometerV2Bricklet
object with the unique device ID uid
and adds
it to the IPConnection ip_connection
:
let accelerometer_v2 = AccelerometerV2Bricklet::new("YOUR_DEVICE_UID", &ip_connection);
This device object can be used after the IP connection has been connected.
AccelerometerV2Bricklet::
get_acceleration
(&self) → ConvertingReceiver<Acceleration>¶Return Object: |
|
---|
Returns the acceleration in x, y and z direction. The values
are given in gₙ/10000 (1gₙ = 9.80665m/s²). The range is
configured with AccelerometerV2Bricklet::set_configuration
.
If you want to get the acceleration periodically, it is recommended
to use the AccelerometerV2Bricklet::get_acceleration_callback_receiver
callback and set the period with
AccelerometerV2Bricklet::set_acceleration_callback_configuration
.
AccelerometerV2Bricklet::
set_configuration
(&self, data_rate: u8, full_scale: u8) → ConvertingReceiver<()>¶Parameters: |
|
---|
Configures the data rate and full scale range. Possible values are:
Decreasing data rate or full scale range will also decrease the noise on the data.
The following constants are available for this function:
For data_rate:
For full_scale:
AccelerometerV2Bricklet::
get_configuration
(&self) → ConvertingReceiver<Configuration>¶Return Object: |
|
---|
Returns the configuration as set by AccelerometerV2Bricklet::set_configuration
.
The following constants are available for this function:
For data_rate:
For full_scale:
AccelerometerV2Bricklet::
set_info_led_config
(&self, config: u8) → ConvertingReceiver<()>¶Parameters: |
|
---|
Configures the info LED (marked as "Force" on the Bricklet) to be either turned off, turned on, or blink in heartbeat mode.
The following constants are available for this function:
For config:
AccelerometerV2Bricklet::
get_info_led_config
(&self) → ConvertingReceiver<u8>¶Returns: |
|
---|
Returns the LED configuration as set by AccelerometerV2Bricklet::set_info_led_config
The following constants are available for this function:
For config:
AccelerometerV2Bricklet::
set_filter_configuration
(&self, iir_bypass: u8, low_pass_filter: u8) → ConvertingReceiver<()>¶Parameters: |
|
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Configures IIR Bypass filter mode and low pass filter roll off corner frequency.
The filter can be applied or bypassed and the corner frequency can be half or a ninth of the output data rate.
The following constants are available for this function:
For iir_bypass:
For low_pass_filter:
New in version 2.0.2 (Plugin).
AccelerometerV2Bricklet::
get_filter_configuration
(&self) → ConvertingReceiver<FilterConfiguration>¶Return Object: |
|
---|
Returns the configuration as set by AccelerometerV2Bricklet::set_filter_configuration
.
The following constants are available for this function:
For iir_bypass:
For low_pass_filter:
New in version 2.0.2 (Plugin).
AccelerometerV2Bricklet::
get_spitfp_error_count
(&self) → ConvertingReceiver<SpitfpErrorCount>¶Return Object: |
|
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Returns the error count for the communication between Brick and Bricklet.
The errors are divided into
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.
AccelerometerV2Bricklet::
set_status_led_config
(&self, config: u8) → ConvertingReceiver<()>¶Parameters: |
|
---|
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:
AccelerometerV2Bricklet::
get_status_led_config
(&self) → ConvertingReceiver<u8>¶Returns: |
|
---|
Returns the configuration as set by AccelerometerV2Bricklet::set_status_led_config
The following constants are available for this function:
For config:
AccelerometerV2Bricklet::
get_chip_temperature
(&self) → ConvertingReceiver<i16>¶Returns: |
|
---|
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.
AccelerometerV2Bricklet::
reset
(&self) → ConvertingReceiver<()>¶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!
AccelerometerV2Bricklet::
get_identity
(&self) → ConvertingReceiver<Identity>¶Return Object: |
|
---|
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.
AccelerometerV2Bricklet::
set_acceleration_callback_configuration
(&self, period: u32, value_has_to_change: bool) → ConvertingReceiver<()>¶Parameters: |
|
---|
The period is the period with which the AccelerometerV2Bricklet::get_acceleration_callback_receiver
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.
If this callback is enabled, the AccelerometerV2Bricklet::get_continuous_acceleration_16_bit_callback_receiver
callback
and AccelerometerV2Bricklet::get_continuous_acceleration_8_bit_callback_receiver
callback will automatically be disabled.
AccelerometerV2Bricklet::
get_acceleration_callback_configuration
(&self) → ConvertingReceiver<AccelerationCallbackConfiguration>¶Return Object: |
|
---|
Returns the callback configuration as set by
AccelerometerV2Bricklet::set_acceleration_callback_configuration
.
AccelerometerV2Bricklet::
set_continuous_acceleration_configuration
(&self, enable_x: bool, enable_y: bool, enable_z: bool, resolution: u8) → ConvertingReceiver<()>¶Parameters: |
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For high throughput of acceleration data (> 1000Hz) you have to use the
AccelerometerV2Bricklet::get_continuous_acceleration_16_bit_callback_receiver
or AccelerometerV2Bricklet::get_continuous_acceleration_8_bit_callback_receiver
callbacks.
You can enable the callback for each axis (x, y, z) individually and choose a resolution of 8 bit or 16 bit.
If at least one of the axis is enabled and the resolution is set to 8 bit,
the AccelerometerV2Bricklet::get_continuous_acceleration_8_bit_callback_receiver
callback is activated. If at least
one of the axis is enabled and the resolution is set to 16 bit,
the AccelerometerV2Bricklet::get_continuous_acceleration_16_bit_callback_receiver
callback is activated.
The returned values are raw ADC data. If you want to put this data into a FFT to determine the occurrences of specific frequencies we recommend that you use the data as is. It has all of the ADC noise in it. This noise looks like pure noise at first glance, but it might still have some frequnecy information in it that can be utilized by the FFT.
Otherwise you have to use the following formulas that depend on the configured
resolution (8/16 bit) and the full scale range (see AccelerometerV2Bricklet::set_configuration
) to calculate
the data in gₙ/10000 (same unit that is returned by AccelerometerV2Bricklet::get_acceleration
):
If a resolution of 8 bit is used, only the 8 most significant bits will be transferred, so you can use the following formulas:
If no axis is enabled, both callbacks are disabled. If one of the continuous
callbacks is enabled, the AccelerometerV2Bricklet::get_acceleration_callback_receiver
callback is disabled.
The maximum throughput depends on the exact configuration:
Number of axis enabled | Throughput 8 bit | Throughout 16 bit |
---|---|---|
1 | 25600Hz | 25600Hz |
2 | 25600Hz | 15000Hz |
3 | 20000Hz | 10000Hz |
The following constants are available for this function:
For resolution:
AccelerometerV2Bricklet::
get_continuous_acceleration_configuration
(&self) → ConvertingReceiver<ContinuousAccelerationConfiguration>¶Return Object: |
|
---|
Returns the continuous acceleration configuration as set by
AccelerometerV2Bricklet::set_continuous_acceleration_configuration
.
The following constants are available for this function:
For resolution:
Callbacks can be registered to receive time critical or recurring data from the device. The registration is done with the corresponding get_*_callback_receiver function, which returns a receiver for callback events.
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.
AccelerometerV2Bricklet::
get_acceleration_callback_receiver
(&self) → ConvertingCallbackReceiver<AccelerationEvent>¶Event Object: |
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Receivers created with this function receive Acceleration events.
This callback is triggered periodically according to the configuration set by
AccelerometerV2Bricklet::set_acceleration_callback_configuration
.
The members of the received struct are the same as AccelerometerV2Bricklet::get_acceleration
.
AccelerometerV2Bricklet::
get_continuous_acceleration_16_bit_callback_receiver
(&self) → ConvertingCallbackReceiver<[i16; 30]>¶Event: |
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Receivers created with this function receive Continuous Acceleration 16 Bit events.
Returns 30 acceleration values with 16 bit resolution. The data rate can
be configured with AccelerometerV2Bricklet::set_configuration
and this callback can be
enabled with AccelerometerV2Bricklet::set_continuous_acceleration_configuration
.
The returned values are raw ADC data. If you want to put this data into a FFT to determine the occurrences of specific frequencies we recommend that you use the data as is. It has all of the ADC noise in it. This noise looks like pure noise at first glance, but it might still have some frequnecy information in it that can be utilized by the FFT.
Otherwise you have to use the following formulas that depend on the
full scale range (see AccelerometerV2Bricklet::set_configuration
) to calculate
the data in gₙ/10000 (same unit that is returned by AccelerometerV2Bricklet::get_acceleration
):
The data is formated in the sequence "x, y, z, x, y, z, ..." depending on the enabled axis. Examples:
AccelerometerV2Bricklet::
get_continuous_acceleration_8_bit_callback_receiver
(&self) → ConvertingCallbackReceiver<[i8; 60]>¶Event: |
|
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Receivers created with this function receive Continuous Acceleration 8 Bit events.
Returns 60 acceleration values with 8 bit resolution. The data rate can
be configured with AccelerometerV2Bricklet::set_configuration
and this callback can be
enabled with AccelerometerV2Bricklet::set_continuous_acceleration_configuration
.
The returned values are raw ADC data. If you want to put this data into a FFT to determine the occurrences of specific frequencies we recommend that you use the data as is. It has all of the ADC noise in it. This noise looks like pure noise at first glance, but it might still have some frequnecy information in it that can be utilized by the FFT.
Otherwise you have to use the following formulas that depend on the
full scale range (see AccelerometerV2Bricklet::set_configuration
) to calculate
the data in gₙ/10000 (same unit that is returned by AccelerometerV2Bricklet::get_acceleration
):
The data is formated in the sequence "x, y, z, x, y, z, ..." depending on the enabled axis. Examples:
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.
AccelerometerV2Bricklet::
get_api_version
(&self) → [u8; 3]¶Return Object: |
|
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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.
AccelerometerV2Bricklet::
get_response_expected
(&mut self, function_id: u8) → bool¶Parameters: |
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Returns: |
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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
AccelerometerV2Bricklet::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.
The following constants are available for this function:
For function_id:
AccelerometerV2Bricklet::
set_response_expected
(&mut self, function_id: u8, response_expected: bool) → ()¶Parameters: |
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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 function_id:
AccelerometerV2Bricklet::
set_response_expected_all
(&mut self, response_expected: bool) → ()¶Parameters: |
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Changes the response expected flag for all setter and callback configuration functions of this device at once.
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.
AccelerometerV2Bricklet::
set_bootloader_mode
(&self, mode: u8) → ConvertingReceiver<u8>¶Parameters: |
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Returns: |
|
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:
For status:
AccelerometerV2Bricklet::
get_bootloader_mode
(&self) → ConvertingReceiver<u8>¶Returns: |
|
---|
Returns the current bootloader mode, see AccelerometerV2Bricklet::set_bootloader_mode
.
The following constants are available for this function:
For mode:
AccelerometerV2Bricklet::
set_write_firmware_pointer
(&self, pointer: u32) → ConvertingReceiver<()>¶Parameters: |
|
---|
Sets the firmware pointer for AccelerometerV2Bricklet::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.
AccelerometerV2Bricklet::
write_firmware
(&self, data: [u8; 64]) → ConvertingReceiver<u8>¶Parameters: |
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Returns: |
|
Writes 64 Bytes of firmware at the position as written by
AccelerometerV2Bricklet::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.
AccelerometerV2Bricklet::
write_uid
(&self, uid: u32) → ConvertingReceiver<()>¶Parameters: |
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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.
AccelerometerV2Bricklet::
read_uid
(&self) → ConvertingReceiver<u32>¶Returns: |
|
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Returns the current UID as an integer. Encode as Base58 to get the usual string version.
AccelerometerV2Bricklet::
DEVICE_IDENTIFIER
¶This constant is used to identify a Accelerometer Bricklet 2.0.
The AccelerometerV2Bricklet::get_identity
function and the IpConnection::get_enumerate_callback_receiver
callback of the IP Connection have a device_identifier
parameter to specify
the Brick's or Bricklet's type.
AccelerometerV2Bricklet::
DEVICE_DISPLAY_NAME
¶This constant represents the human readable name of a Accelerometer Bricklet 2.0.