• 下面的JSON数据已扩展以提高可读性。在传输之前，应将所有JSON缩小（删除空白）.
• 除非另有说明，否则使用HTTP时，所有命令均使用POST方法发送.
• 所有Digilent Instrumentation协议命令必须是JSON对象或分块传输:
  • JSON对象
    • 必须以'{'字符开头，并以'}'字符结尾.
    • 可能后跟一个或多个'\ r \ n'.
  • 大块转移
    • 由一个或多个块组成.
    • 每个块必须以ASCII十六进制格式的块中的字节数开头，后跟一个'\ r \ n'，二进制数据和一个'\ r \ n'.
      • 块长度在块长度和数据之间不包含'\ r \ n'.
      • 块长度不包含二进制数据后的尾随'\ r \ n'.
    • 每个分块传输都以零长度的分块终止.
    • Ex.

6\r\n
chunk1\r\n
8\r\n
somedata\r\n
E\r\n
 in\r\n\r\nchunks.\r\n
0\r\n
\r\n

可以使用多命令在单个事务中发送多个命令。

提供访问任意波形发生器的数据和功能的命令

获得仪器通道的当前状态、

• awg - (Object) - 任意波形发生器的目标.
  • # - (Array<Object>) - An array of command objects to apply to the awg channel.
    • command - (String) - 获取当前状态的命令: “getCurrentState”

• awg - (Object) - 任意波形发生器的目标
  • # - (Array<Object>) - An array of command objects applied to the awg channel.
    • command - (String) - The Get Current State command: “getCurrentState”
    • statusCode - (Integer) - A numeric value representing the device status.
      

        * ** wait ** - (Integer) - The number of ms to wait before the device is ready to process another command. 
        * ** state ** - (String) - The instrument channel state: "idle" or "running".
        * ** waveType ** - (String) - The waveform type: "sine", "square", "triangle", "dc", "sawtooth", "arbitrary", or "none".
        * ** actualSignalFreq ** - (Integer) -  The actual waveform frequency in mHz.
        * ** actualVpp ** - (Integer) - The actual peak-to-peak voltage in mV.
        * ** actualVOffset ** - (Integer) - The actual voltage offset in mV.

设置AWG的通道参数以输出正常的波形

• awg - (Object) - The arbitrary waveform generator object.
  • # - (Array<Object>) - An array of command objects to apply to the awg channel.
    • command - (String) - The Set Regular Waveform command: “setRegularWaveform”
    • signalType - (String) - The waveform type: “sine”, “square”, “triangle”, “dc”, “sawtooth”, “arbitrary”, or “none”.
    • signalFreq - (Integer) - The signal frequency in mHz.
    • vpp - (Integer) - The peak-to-peak voltage in mV.
    • vOffset - (Integer) - The voltage offset in mV.

• awg - (Object) - The arbitrary waveform generator object.
  • # - (Array<Object>) - An array of command objects applied to the awg channel.
    • command - (String) - The Set Regular Waveform command: “setRegularWaveform”
    • statusCode - (Integer) - A numeric value representing the device status. See reference/software/digilent-instrumentation-protocol/status-codes
    • wait - (Integer) - The number of ms to wait before the device is ready to process another command.
      

        * **actualSignalFreq** - (Integer) -  The actual waveform frequency in mHz.
        * **actualVpp** - (Integer) - The actual peak-to-peak voltage in mV.
        * **actualVOffset** - (Integer) - The actual voltage offset in mV.

运行AWG通道

• awg - (Object) - The arbitrary waveform generator object.
  • # - (Array<Object>) - An array of command objects to apply to the awg channel.
    • command - (String) - The Run command: “run”

• awg - (Object) - The arbitrary waveform generator object.
  • # - (Array<Object>) - An array of command objects applied to the awg channel.
    • command - (String) - The Run command: “run”
    • statusCode - (Integer) - A numeric value representing the device status. See reference/software/digilent-instrumentation-protocol/status-codes
    • wait - (Integer) - The number of ms to wait before the device is ready to process another command.
      

停止AWG通道

• awg - (Object) - The arbitrary waveform generator object.
  • # - (Array<Object>) - An array of command objects to apply to the awg channel.
    • command - (String) - The Stop command: “stop”

• awg - (Object) - The arbitrary waveform generator object.
  • # - (Array<Object>) - An array of command objects applied to the awg channel.
    • command - (String) - The Stop command: “stop”
    • statusCode - (Integer) - A numeric value representing the device status. See reference/software/digilent-instrumentation-protocol/status-codes
    • wait - (Integer) - The number of ms to wait before the device is ready to process another command.
      

提供访问直流电压数据和函数的命令

Get the current state of the instrument's channel

• dc - (Object) - The DC power supply object.
  • # - (Array<Object>) - An array of command objects to apply to the DC power supply channel.
    • command - (String) - The Get Current State command: “getCurrentState”

• gpio - (Object) - The DC power supply object.
  • # - (Array<Object>) - An array of command objects applied to the DC power supply channel.
    • command - (String) - The Get Current State command: “getCurrentState”
    • statusCode - (Integer) - A numeric value representing the device status. See reference/software/digilent-instrumentation-protocol/status-codes
    • wait - (Integer) - The number of ms to wait before the device is ready to process another command.
      

        * **state** - (String) - The current state of the channel: "idle" or "running".
        * **voltage** - (Integer) - The current measured value of the channel in mV.
      
        

      #### 举例

{
    "dc": {
        "1": [
            {
                "command":"getCurrentState"
            }
        ]
    }
}

{
    "dc": {
        "1": [
            {
                "command": "getCurrentState",
                "statusCode": 0,
                "wait": 0,
                "state": "idle",
                "voltage": 3300                
            }
        ]
    }
}

Get the output voltage(s) of the specified DC power supply channel(s).

• dc - (Object) - The DC power supply object.
  • # - (Array<Object>) - An array of command objects to apply to the DC power supply channel.
    • command - (String) - The Get Voltage command: “getVoltage”

• gpio - (Object) - The DC power supply object.
  • # - (Array<Object>) - An array of command objects applied to the DC power supply channel.
    • command - (String) - The Get Voltage command: “getVoltage”
    • statusCode - (Integer) - A numeric value representing the device status. See reference/software/digilent-instrumentation-protocol/status-codes
    • wait - (Integer) - The number of ms to wait before the device is ready to process another command.
      

        * **voltage**  - (Integer) - The current measured value of the channel in mV.

#### 举例

{
   "dc":{
      "1":[
         {
            "command":"getVoltage"
         }
      ]
   }
}

{
   "dc":{
      "1":[
         {
            "command":"getVoltage",
            "statusCode":0,
            "wait":100,
            "voltage":3300
         }
      ]      
   }
}

Set the output voltage(s) of the specified DC power supply channel(s).

• dc - (Object) - The DC power supply object.
  • # - (Array<Object>) - An array of command objects to apply to the DC power supply channel.
    • command - (String) - The Set Current State command: “setCurrentState”
    • voltage - (Integer) - The desired voltage in mV.

• gpio - (Object) - The DC power supply object.
  • # - (Array<Object>) - An array of command objects applied to the DC power supply channel.
    • command - (String) - The Set Current State command: “setCurrentState”
    • statusCode - (Integer) - A numeric value representing the device status. See reference/software/digilent-instrumentation-protocol/status-codes
    • wait - (Integer) - The number of ms to wait before the device is ready to process another command.
      

#### 举例:

{
   "dc":{
      "1":[
         {
            "command":"setVoltage",
            "voltage":3300
         }
      ]
   }
}

{
   "dc":{
      "1":[
         {
            "command":"setVoltage",
            "statusCode":0,
            "wait":500
         }
      ]
   }
}