Then I thought maybe I can use pulseIn() function. I know that the optimal distance is 0.3mm. However, again the response was always around zero and there wasn’t any change when I hold black and white paper in front of it. Here is my code for testing one of the sensors which was connected to pin 3. However, I thought that maybe there is something incompatible with your library that I cannot recognize. They work properly and there is no problem with the compatibility of Energia and Arduino. I suspected that Energia has some differences with Arduino, So I went through your library cpp code and test all of the commands and functions, like Micros(), pinMode(), etc. No matter how far the sensor is from the line and white paper. But I coudn’t get any response when I used your library’s examples. I’m using Energia IDE which is completely the same with Arduino IDE.

I went through all of the descriptions and instructions on your website. However I cannot get any response from the sensors. when reading the last byte i do not get good values but at least the loop does not freeze.I bought a Qtr-8RC a few days ago.

The timing must be precise and also 3 bytes are requested and only 2 read. I did not managed yet to get the C stuff running on my linux machine, probably I2C is broken in the energia lib?Įdit: it seems that there is a bug in the library too. There is a boosterpack containing the SHT21 as well, but i did not found any sample code for that. everytime I even try to compile a empty file with virtual wire it gives me this: C:EnergialibrariesVirtualWireVirtualWire.cpp:588:7: error: expected. I basically used this library: and modified the example script like this: #include then i tried both I2C interfaces by setting tModule(0) or tModule(1) but in all cases the result is that either everything freezes in the Wire.endTransmission() function or i receive only bytes filled with 0. I used different setups with external Pullup, used the internal pullup and also no pullup. I want to communicate with a SHT21 Sensor from a EK-TM4C1294XL Board.īut it seems that I2C communication is quite difficult with energia.

Wire library energia