Hi Andrey, (sorry, I don't have cyrillic characters on my keyboard; I hope the transliteration of your name is correct)
2009/11/14 Андрей <fromarmywithl...@list.ru>: > When I try to read distance from NXTRadar sensor its everytime returns 0. > Other sensors works fine. I cant find any documentation about NXTalk except > webpage of the project. But where is no information about using of NXTRadar > on that page. So I decided to use it as a regular sensor. I did something > like this: > radar := NXTRadar enable: 4. > self display show: (radar distance). > radar disable. > Am I right? Or NXTRadar differs from other sensors and needs special > processing? NXTRadar does require some special handling inside the VM, as its data are delivered via the I2C bus, which has certain timing constraints ... but that should not be your concern. :-) It might be that you have a version of the VM and image that are not up to date, and that would be my fault. I will check this tomorrow and send you the latest version immediately (plus, have the web page updated). In the meantime, to make sure things are OK, could you please try the NXTRadarTest application (it is in the NXTalk-ST-HardwareTests category)? It expects the radar to be connected to port 3 and continuously displays the measured distance. Move your hand in front of the radar to check. Looking at your code, it *might* be a problem that the radar is disabled immediately after the distance is measured. This *might* interfere with the aforementioned timing constraints, but I cannot say that for sure. Best, Michael _______________________________________________ Beginners mailing list Beginners@lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners
