seeed-studio / seeed_ldc1612

Seeed Inductive Sensor LDC1612

Introduction:

The LDC1612 is 2 channel,28-bit inductance to digital converters (LDCs) for inductive sensing solutions. With multiple channels and support for remote sensing,the LDC1612 enable the performance and reliability benefits of inductive sensing to be realized at minimal cost and power.

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Usage:

Download all the source files. There are three examples for user to use.

• examples/basic_demo/basic_demo.ino,this example shows a demo for single channel measurement.
• examples/muti_channel_demo/muti_channel_demo.ino,this example shows multiple channels measurement.LDC1612 support two channels.
• examples/basic_demo/coin_test_demo.ino,this example shows a demo for the sensor detects the distance of the coin. Note: the sensor is suspended during testing.

Notice:

1. Set the Rb(resistance unit-kom),L(inductance unit-uH),C(capatance unit-pf) by the APIs if you don't use the Coil Inductance we provided,Used to calculate and set the corresponding frequency register of the sensor.
2. There is a INT-pad on the sensor board,It turns to low level when the conversion is complete,overwise stays high,but you should configure the corresponding register of the sensor.

Reference:

Refer to the /doc to get more detail. This is just a simple and universal template.

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This software is written by downey for seeed studio
Email:[email protected] and is licensed under The MIT License. Check License.txt for more information.

Contributing to this software is warmly welcomed. You can do this basically by
forking, committing modifications and then pulling requests (follow the links above
for operating guide). Adding change log and your contact into file header is encouraged.
Thanks for your contribution.

Seeed Studio is an open hardware facilitation company based in Shenzhen, China.
Benefiting from local manufacture power and convenient global logistic system,
we integrate resources to serve new era of innovation. Seeed also works with
global distributors and partners to push open hardware movement.

seeed_ldc1612's Issues

Purpose of set_Rp() and set_Q_factor()?

What is the purpose of setting AC resistance and Q Factor in this library?
The two functions exist and are used in the example, but the values are actually never read in the library, so what is their purpose and can they just be ignored?

void LDC1612::set_Rp(u8 channel, float n_kom) {
    resistance[channel] = n_kom;
}

void LDC1612::set_Q_factor(u8 channel, float q) {
    Q_factor[channel] = q;
}

For the sake of simplicity and and in general those functions should be removed if they are useless and also the examples should be updated to remove their invocations.
Or is there any "future use" or other part where those values are actually needed?

Doc

LDC1612_datasheet.pdf