Node-RED,IOT Foundation Out节点不发送命令

时间:2015-06-16 21:35:34

标签: mqtt ibm-cloud iot node-red

我有一个绑定到IOT Foundation(iotf)服务的Node-RED应用程序。我可以从设备接收事件并适当地处理它们。

但是,我现在有兴趣将命令发送回我的设备并遇到一些问题。设备上没有显示任何内容,但通过在节点中创建IOTF,我可以确认命令正在通过iotf。

我绝对可以使用纯python通过iotf获取命令,因为以下代码运行良好:

客户代码:

#!/usr/bin/python

import ibmiotf.device
from time import sleep

options = {
  "org": "cgmncc",
  "type": "table",
  "id": "b827eb764b7a",
  "auth-method": "token",
  "auth-token": "redacted"
}

def myCommandCallback(cmd):
  print('inside command callback')
  print cmd

def main():
  client = ibmiotf.device.Client(options)
  client.connect()
  client.commandCallback = myCommandCallback
  while True:
    sleep(1)

if __name__ == "__main__":
  main()

申请代码:

#!/usr/bin/python

import ibmiotf.application

options = {
  "org": "redacted",
  "id": "python app",
  "auth-method": "apikey",
  "auth-key": "redacted",
  "auth-token": "redacted"
}

try:
  client = ibmiotf.application.Client(options)
  client.connect()
  client.publishCommand('table', 'b827eb764b7a', 'test')
  client.disconnect()
except ibmiotf.ConnectionException as e:
  print e

每当我运行应用程序代码时,我都会看到以下输出:

root@raspberrypi ~ # ./app.py 
inside command callback
<ibmiotf.device.Command instance at 0x14e8490>

我有如下所示配置的Node-RED iotf输出节点,但是当我触发流时,命令回调函数不会触发!

enter image description here enter image description here

我认为尝试使用时间戳触发器来触发命令或者我自己配置​​输出节点的方式可能有问题 - 任何建议或建议都会受到赞赏!

2 个答案:

答案 0 :(得分:2)

检查命令是否到达IBM IoT Foundation的简单测试是 - 开发具有订阅命令的IoT App In节点的另一个流。我在这里附加了Node-RED流程

&#13;
&#13;
[
{
    "id": "40560f8b.30693",
    "type": "ibmiot in",
    "authentication": "boundService",
    "apiKey": "",
    "inputType": "cmd",
    "deviceId": "b827eb764b7a",
    "applicationId": "",
    "deviceType": "table",
    "eventType": "",
    "commandType": "test",
    "format": "string",
    "name": "IBM IoT App In",
    "service": "registered",
    "allDevices": false,
    "allApplications": "",
    "allDeviceTypes": false,
    "allEvents": "",
    "allCommands": false,
    "allFormats": false,
    "x": 268,
    "y": 171,
    "z": "6bd610b9.7b40a",
    "wires": [
        [
            "2f9b9c00.8b7ba4"
        ]
    ]
},
{
    "id": "2f9b9c00.8b7ba4",
    "type": "debug",
    "name": "",
    "active": true,
    "console": "false",
    "complete": "false",
    "x": 493,
    "y": 195,
    "z": "6bd610b9.7b40a",
    "wires": []
}
]
&#13;
&#13;
&#13;

在工作区中会出现这种情况 enter image description here

添加此流后,您可以测试从同一工作区发布的设备命令 你能试试吗?由于您现在有2个调试节点,因此您应该能够看到两次相同的timetamp输出。我尝试了相同的流程,具有相同的细节(组织除外),它工作正常。

谢谢和问候 Amit M Mangalvedkar

答案 1 :(得分:1)

我尝试了以下代码

#!/usr/bin/python

import ibmiotf.device
from time import sleep

options = {
  "org": "uguhsp",
  "type": "iotsample-raspberry",
  "id": "00aabbccde03",
  "auth-method": "token",
  "auth-token": "MASKED"
}

def myCommandCallback(cmd):
  print('inside command callback')
  print cmd

def main():
  client = ibmiotf.device.Client(options)
  client.connect()
  client.commandCallback = myCommandCallback
  while True:
    sleep(1)

if __name__ == "__main__":
  main()

与您的代码基本相似。
我可以发布命令来访问设备。

是否可以确认是否只有1个设备(或模拟设备)正在使用设备凭据,并且多个设备(物理设备或模拟设备)没有共享凭据?

谢谢和问候 Amit M Mangalvedkar