Hello,
Is it possible that i can have acceleration RATE above 100 Hz?
Same question for gyroscope.
Thanx!
Aris
Keywords:
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Hello,
Is it possible that i can have acceleration RATE above 100 Hz?
Same question for gyroscope.
Thanx!
Aris
Hi Jyro_gr,
The available maximum data rate for the application is 100Hz, the sensor can support up to 1600Hz, but the sensor fusion implementation can't handle that fast update rate so there isn't any implementation for higher data rate. Same for the gyro as well the sensor can support up to 3200Hz data rate but not the application.
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So if i don't really care about the 'fusion' and i need just raw data, i can increase the data rate?
This has to be changed in the app or in the IOT code (via keil5 etc)?
THanx
Hi Jyro_gr,
Its not only the sensor fusion, the limitation is valid for the raw project as well, since in higher rates of data generation the BLE is not going to be capable of transfering the data over the link one interrupt at a time. The higher data rates require connection intervals that are out of the minimum connection interval allowed by BLE. The minimum allowed is 7.5 and for 100Hz data rate we use about 10ms connection interval. You can update the IoT raw firmware through keil in order to get more data during one report (more data packed in a single connection interval) but the application isn't going to be able to follow, there should be a lag on what is displayed in the application and also the device isn't tested in operation that exceed the default data rates.
You can test this by undefining the USE_SPI_FLASH_CONFIG in order to load data from the default array and in the user_app_wrbl_config.h change the SENSOR_SAMPLE_RATE_IMU to a user sample case, for example SENSOR_SAMPLE_RATE_USER_CASE2 and choose for that sample case BMI160_ACCEL_OUTPUT_DATA_RATE_200HZ and BMI160_ACCEL_OUTPUT_DATA_RATE_200HZ.
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嗨了。
After taking several measures, i can see that the measurements rate (in the .log file) is the same as fusion rate! this means that even if accel rate is 100 Hz, the final rate is fusion rate=25Hz (i get 25 measurements / sec)
When i deactivate the fusion etc, i get no data at all, and the app's images are static.
How can i get proper data , even at 100Hz??
此外，我在哪里可以找到融合算法？
Thanx
Jyro
Hi Jyro_gr,
As i mentioned in my previous post the application and the fw isn't ment to support this kind of data rate, regarding the FUSION algorithm, the source code is not available, only the object files.
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I understand this for rates>100Hz.
What i'm not able to understand, is why can't the app support 100Hz since it's a choice in the app?
The sensor can measure at those (100 Hz) rates but the BT isn't that capable of even those rates?
我问这个我真的需要彻底的原因understand whether it is or isn't possible to have a log of max 100 measurements / sec in the log file...
Thank you for your answers.
Hi Jyro_gr,
关于传感器融合固件，数据生成取决于FIFO的WM从传感器中收集数据，该WM取决于传感器融合所选速率和传感器的实际速率。当该WM达到某个级别时，生成中断并且应用程序从FIFO读取数据。之后，处理包括加速度计，陀螺仪和磁力计数据的原始传感器数据，然后传递到传感器融合更新功能。在处理FIFO阵列并更新传感器融合算法后，only a part of the raw data is sent over BLE。在原始项目中，所有原始数据都会通过BLE发送到中央设备。
All the above can be found on the IoT User Manual UM-B-063 in section 7.3 general operation.
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Thanx a lot, i read the manual and was very enlightening!
I understand that " In the raw project all the raw data are send over BLE to the central device",
but my problem is how can i trigger all this? Which keil5 target_app example do i choose or modify in keil5, so i can load it via SmartSnippets onto my tag?
在your mobile app, when i choose fusion disabled, only environmental data are shown, so i guess there's no RAW project option in this one, right?
Thank you!
Jyro
Hi Jyro_gr,
I dont quite get the question, how to trigger what ? If you mean how the device is forced to start sending data, this depends on the central side, the proper characteristics are written with the proper configurations in order for the device to starts send data. Both projects can be downloaded via smarts snippets to the 583, the raw project does not use the sensor Fusion Library and the SFL use this library. If you are interested only for raw data the raw project is what you should choose.
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谢谢您的回答，please let me be more specific.
1) I received the tags already programmed with the default program. The one that cooperates with your mobile app. This is an only SFL project or it can be used as a RAW project as well, depending on the mobile app i make?
2) I've downloaded on the tag various examples (with snippets) that come with the sdk. I need to download the original default program. Where can i find this?
3) "Both projects can be downloaded via smarts snippets to the 583", where can i find those projects? In which folder of the sdk i downloaded?
Thanx a lot!
Jyro
Hi Jyro_gr,
1) There are two projects regarding the IoT sensor kit (RAW and SFL), both of them provide raw data measurements but with different implementations for each project. Only the SFL project returns sensor fusion results the RAW project returns only raw valus. So depending on which characteritsic you read you get a specific value.
2) The examples are not included in the SDK, you will be able to find the projects in the reference design section of the 583 product (DA14583 IoT Sensor Development Kit).
3)一样Q2。
Also please, for further questions please try to create a new thread instead of posting on the same post, since the current one has allready more than one replies and different questions and its difficult for someone to follow.
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就那么简单！
Big thanx!
Works like a charm!
~Jyro
Thanx a lot, i'll try it soon and come up to you with the results!
Hi,
I am using "SmartBond IoT Sensor Development Kit" for Fusion data. By using "IoT Sensors mobile app", I am able to see the 3D motion on the mobile while rotating the sensor development kit. Presently, I am using other android app (Application specific android app) to rotate the image on the mobile. But I am not able to get the rotation on the android app. I think, I am not following proper procedure and factors to calculate the Yaw,. Pitch and Roll values.
I am able to receive the data of Fusion from the IoT sensor Development kit to my android app. Please guide me in doing the calculation to get the parameter to make the image to rotate on the android app.
问候，
Mahesh Chandana.
Hi Mahesh,
The IoT sends the appropriate data from the senor fusion algorithm to the mobile phone through custom reports that are indicated in the documentation (please check Table 12 in the UM-B-063 document). If your application follows the same conventions as the IoT application you should be able to get some 3D movement. Is your application able to parse the data from the reports of the IoT ? What i can do in order to help is to send you the IoT android/iOS code if you like to use it as a reference.
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Hi,
Our application able to parse the data from the IoT. Please android code. it may helpful to understand the Fusion data processing.
Thank you very much for quick response.
问候，
Mahesh Chandana.
Hi Mahesh,
A mail has been sent to the registered email address.
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Hi,
Thank you for your response. I will update to you.
Regrads,
Mahesh Chandana.
Hi,
I am using IoT code for DA14583 (version: v5.160.1.19). As per the "UM-B-063_DA14583_IoT_sensor_development_kit_1v1.pdf", It is supporting 4 Modes of operation.
1. Gyroscope, Accelerometer and Magnetometer (GAM) mode
2. Gyroscope and Accelerometer (GA) mode
3. Gyroscope Only (G) mode
4. Accelerometer and Magnetometer (AM) mode
Please guide me to understand the procedure to configure the mode. Where I can change the mode of operation in the code.
问候，
Mahesh Chandana.
Hi Mahesh,
What sensors are enabled in your device depends in the sensor_config variable, which is populated either from the default values of the sensor_config_default variable in the user_sensor_config.c file or directly from the non-volatile memory, the sensor_combination member of the struct is the one that controls what sensors are going to be enabled. The default value is ENABLE_ALL_SENSOR_FLAGS. The code will check which flags are set in the user_init_sensor_combination and will enable the corresponding sensors.
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Hi,
What you have told is for enabling the sensors.
Could you please explain the procedure, so that while calculating the sensor fusion the IoT hardware only uses Gyroscope and Accelerometer data.
Please guide me to how to proceed.
问候，
Mahesh Chandana
Hi Mahesh,
Your question was how to configure the mode of operation in the code between the available options (GAM, GA, G, AM). By enabling the sensors the device will feed the sensor fusion engine with the appropriate data available from the enabled sensors. For more information on the functionality of the IoT you can check the UM-B-063 in section 7.3 where the general operation is described in detail in every different state of the system.
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