18、树莓派与XBee传感器节点项目指南

树莓派与XBee传感器节点项目指南

1. 传感器测试

在进行项目前，需要对传感器进行测试。以BMP280传感器为例，你需要以root权限运行脚本。运行命令如下：

python3 ./pi_bmp280.py

运行该脚本后，可能不会立即看到输出，但在一两秒内，你应该会看到类似以下的输出：

The barometric pressure at altitude 1007.25 is 50.37 hPa.
The barometric pressure at altitude 1007.28 is 50.24 hPa.
The barometric pressure at altitude 1007.24 is 50.40 hPa.
The barometric pressure at altitude 1007.24 is 50.74 hPa.
The barometric pressure at altitude 1007.22 is 50.45 hPa.
The barometric pressure at altitude 1007.25 is 50.27 hPa.
The barometric pressure at altitude 1007.25 is 49.83 hPa.
The barometric pressure at altitude 1007.26 is 50.19 hPa.
The barometric pressure at altitude 1007.27 is 50.16 hPa.