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thotro / arduino-dw1000

A library that offers functionality to use Decawave's DW1000 chips/modules with Arduino.
Apache License 2.0
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How can we get distances between a tag and more than one anchor? #195

Closed wangwangguoguo closed 7 years ago

wangwangguoguo commented 7 years ago

I've managed to get the distance between 1 tag and 1 anchor. But how can we add a second anchor? We still use the same DW1000Ranging_ANCHOR.ino and DW1000Ranging_TAG.ino, or should I change some lines of codes?

ghost commented 7 years ago

The time line should be controlled in this. I referred #181, hoping that this can help you. If you have only one tag, there is no need to change something. #179 Just use the demo code, and you can realize the ranging between one tag and multi anchor. If you have more than one tag, you need to control the time line.

wangwangguoguo commented 7 years ago

That is to say, I needn't change anything if I just want to get the position of a tag by receiving 3 distances with different anchors? @KeyYD

ghost commented 7 years ago

@wangwangguoguo Yes, but more precisely, if you want to use multi anchor, a certain address(not randomly) for every anchor will be better.

wangwangguoguo commented 7 years ago

@KeyYD image 2 questions

1： I've changed the code in DW1000.cpp volatile uint8_t DW1000RangingClass::_networkDevicesNumber = 0; in DW1000.h static volatile uint8_t _networkDevicesNumber;

But as is shown in the picture the 3rd anchor can't get connected. Have I changed the code correctly?

2: The short address is random all the time although I define it like this: _currentShortAddress[0] = 1; _currentShortAddress[1] = 0; image

I get exactly the same problem and I do as is suggested in #179 but the pb hasn't been solved. I can't find where is wrong. Do you have any idea?

PS: I've also assigned a certain address to every anchor differently.