试图检测覆盆子pi 2上的i2c传感器

Question

我跟踪了所有instructions但我的Pi 2没有检测到i2c：

pi@raspberrypi ~/Adafruit_Python_BMP/examples $ sudo i2cdetect -y 1             
Error: Could not open file `/dev/i2c-1' or `/dev/i2c/1': No such file or directory

我尝试了raspi-config并手动但坚持错误。