MSP430FR6047: flow rate calibration with FR6047_USSSWLib_template_example

Kathrin Honermann

Part Number: MSP430FR6047

We want to use the FR6047_USSSWLib_template_example project as base for our own ultrasonic flowmeter because it has less functions than the normal project MSP430FR6047EVM_USS_Water_Demo. For example we also don‘t need the display, the buttons or the LPM and we want to use the UART-communication.

I inserted my calibration headers into the folder FR6047_USSSWLib_template_example\USS_Config but my measurement results are not correct. They seem to be 30% under the real flow value. So is it possible to use this poject for exact flow measurements?

I also tried to implement the warning LED but this blocked the whole project. Where is a good place to implement the LED without interrupting the measurement routine?

Kind regards,
Kathrin

over 4 years ago

0 Dennis Lehman over 4 years ago

TI__Guru 71216 points

Hi Kathrin,

Let me check with our USS experts on this.

0 Dennis Lehman over 4 years ago in reply to Dennis Lehman

TI__Guru 71216 points

Hi Kathrin,

Our USS expert will be joining shortly to help answer your question.

0 Eddie LaCost over 4 years ago

TI__Mastermind 44410 points

Hi Katherin,

When you test with the USS Water Demo, are you seeing accurate results? You should see the same results in the template project as well. When you are generating the header files in the Design Center GUI, are you using the same version of the GUI as template project?

Also, in USS_userconfig.h, check the define to enable VFR meter calibration.

#define USS_ENABLE_VFR_METER_CALIB false

0 Kathrin Honermann over 4 years ago in reply to Eddie LaCost

Intellectual 255 points

Hi Eddie,

I created the headers with the USS Water Demo project. With this software, I get exact results. For the USSSWLIB_template_example I copied exactly the same headers into the project.

I did not find the define of USS_ENABLE_VFR_METER_CALIB in USS_userConfig.h. In none of the projects. Should it be true to enable the calibration?

0 Dennis Lehman over 4 years ago in reply to Kathrin Honermann

TI__Guru 71216 points

Hi Kathrin,

Let me try to get you that answer.

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MSP430FR6047: flow rate calibration with FR6047_USSSWLib_template_example