About Multichannel Gas sensor

私はseeed社の Grove - Multichannel Gas Sensor を使っています。
このページからコードを取得しましたが、うまく動きませんでした。

https://wiki.seeedstudio.com/Grove-Multichannel_Gas_Sensor/#getting-started

センサはこのような環境で動かしています。

エラーコードは以下の通りです。
ガスセンサが認識されていないような気がするのですが、、
もし何かわかる人がいたら助けてほしいです。

『 Arduino:1.8.12 (Windows 10), ボード:“Arduino Uno”

In file included from C:\Users\Tatsuro\Downloads\Mutichannel_Gas_Sensor-master (1)\Mutichannel_Gas_Sensor-master\examples\ReadSensorValue_Grove\ReadSensorValue_Grove.ino:15:0:

sketch\MutichannelGasSensor.h:106:17: warning: inline function ‘void MutichannelGasSensor::write_i2c(unsigned char, unsigned char*, unsigned char)’ used but never defined

 inline void write_i2c(unsigned char addr, unsigned char* dta, unsigned char dta_len);

             ^~~~~~~~~

C:\Users\TATSURO~1\AppData\Local\Temp\ccoN14Z1.ltrans0.ltrans.o: In function `setup’:

C:\Users\Tatsuro\Downloads\Mutichannel_Gas_Sensor-master (1)\Mutichannel_Gas_Sensor-master\examples\ReadSensorValue_Grove/ReadSensorValue_Grove.ino:20: undefined reference to `gas’

C:\Users\Tatsuro\Downloads\Mutichannel_Gas_Sensor-master (1)\Mutichannel_Gas_Sensor-master\examples\ReadSensorValue_Grove/ReadSensorValue_Grove.ino:20: undefined reference to `gas’

C:\Users\Tatsuro\Downloads\Mutichannel_Gas_Sensor-master (1)\Mutichannel_Gas_Sensor-master\examples\ReadSensorValue_Grove/ReadSensorValue_Grove.ino:20: undefined reference to `MutichannelGasSensor::begin(int)’

C:\Users\Tatsuro\Downloads\Mutichannel_Gas_Sensor-master (1)\Mutichannel_Gas_Sensor-master\examples\ReadSensorValue_Grove/ReadSensorValue_Grove.ino:21: undefined reference to `gas’

C:\Users\Tatsuro\Downloads\Mutichannel_Gas_Sensor-master (1)\Mutichannel_Gas_Sensor-master\examples\ReadSensorValue_Grove/ReadSensorValue_Grove.ino:21: undefined reference to `gas’

C:\Users\Tatsuro\Downloads\Mutichannel_Gas_Sensor-master (1)\Mutichannel_Gas_Sensor-master\examples\ReadSensorValue_Grove/ReadSensorValue_Grove.ino:21: undefined reference to `MutichannelGasSensor::powerOn()’

C:\Users\Tatsuro\Downloads\Mutichannel_Gas_Sensor-master (1)\Mutichannel_Gas_Sensor-master\examples\ReadSensorValue_Grove/ReadSensorValue_Grove.ino:23: undefined reference to `gas’

C:\Users\Tatsuro\Downloads\Mutichannel_Gas_Sensor-master (1)\Mutichannel_Gas_Sensor-master\examples\ReadSensorValue_Grove/ReadSensorValue_Grove.ino:23: undefined reference to `gas’

C:\Users\Tatsuro\Downloads\Mutichannel_Gas_Sensor-master (1)\Mutichannel_Gas_Sensor-master\examples\ReadSensorValue_Grove/ReadSensorValue_Grove.ino:23: undefined reference to `MutichannelGasSensor::getVersion()’

C:\Users\Tatsuro~1\AppData\Local\Temp\ccoN14Z1.ltrans0.ltrans.o: In function `measure_NH3’:

sketch/MutichannelGasSensor.h:131: undefined reference to `gas’

sketch/MutichannelGasSensor.h:131: undefined reference to `gas’

sketch/MutichannelGasSensor.h:131: undefined reference to `MutichannelGasSensor::calcGas(int)’

C:\Users\TATSURO~1\AppData\Local\Temp\ccoN14Z1.ltrans0.ltrans.o: In function `measure_CO’:

sketch/MutichannelGasSensor.h:125: undefined reference to `gas’

sketch/MutichannelGasSensor.h:125: undefined reference to `gas’

sketch/MutichannelGasSensor.h:125: undefined reference to `MutichannelGasSensor::calcGas(int)’

C:\Users\TATSURO~1\AppData\Local\Temp\ccoN14Z1.ltrans0.ltrans.o: In function `measure_NO2’:

sketch/MutichannelGasSensor.h:128: undefined reference to `gas’

sketch/MutichannelGasSensor.h:128: undefined reference to `gas’

sketch/MutichannelGasSensor.h:128: undefined reference to `MutichannelGasSensor::calcGas(int)’

C:\Users\TATSURO~1\AppData\Local\Temp\ccoN14Z1.ltrans0.ltrans.o: In function `measure_C3H8’:

sketch/MutichannelGasSensor.h:134: undefined reference to `gas’

sketch/MutichannelGasSensor.h:134: undefined reference to `gas’

sketch/MutichannelGasSensor.h:134: undefined reference to `MutichannelGasSensor::calcGas(int)’

C:\Users\TATSURO~1\AppData\Local\Temp\ccoN14Z1.ltrans0.ltrans.o: In function `measure_C4H10’:

sketch/MutichannelGasSensor.h:137: undefined reference to `gas’

sketch/MutichannelGasSensor.h:137: undefined reference to `gas’

sketch/MutichannelGasSensor.h:137: undefined reference to `MutichannelGasSensor::calcGas(int)’

C:\Users\TATSURO~1\AppData\Local\Temp\ccoN14Z1.ltrans0.ltrans.o: In function `measure_CH4’:

sketch/MutichannelGasSensor.h:140: undefined reference to `gas’

sketch/MutichannelGasSensor.h:140: undefined reference to `gas’

sketch/MutichannelGasSensor.h:140: undefined reference to `MutichannelGasSensor::calcGas(int)’

C:\Users\TATSURO~1\AppData\Local\Temp\ccoN14Z1.ltrans0.ltrans.o: In function `measure_H2’:

sketch/MutichannelGasSensor.h:143: undefined reference to `gas’

sketch/MutichannelGasSensor.h:143: undefined reference to `gas’

sketch/MutichannelGasSensor.h:143: undefined reference to `MutichannelGasSensor::calcGas(int)’

C:\Users\TATSURO~1\AppData\Local\Temp\ccoN14Z1.ltrans0.ltrans.o: In function `measure_C2H5OH’:

sketch/MutichannelGasSensor.h:146: undefined reference to `gas’

sketch/MutichannelGasSensor.h:146: undefined reference to `gas’

sketch/MutichannelGasSensor.h:146: undefined reference to `MutichannelGasSensor::calcGas(int)’

collect2.exe: error: ld returned 1 exit status

exit status 1
ボードArduino Unoに対するコンパイル時にエラーが発生しました。』