# DeviceManager

The **DeviceManager** class manages the connection, power, and settings of the AsReader device.

---

## getInstance

Retrieves the instance of **DeviceManager**.

```java
public static DeviceManager getInstance()
```

### Return Value

```{list-table}
:align: left
:class: list-table

* - Type
  - Description
* - `DeviceManager`
  - Instance of the `DeviceManager` class
```

### Sample Code

```java
DeviceManager deviceManager = DeviceManager.getInstance();
```

---

## setCallback

Sets the **DeviceManagerCallback** callback.

```java
public void setCallback(DeviceManagerCallback callback)
```

### Parameters

```{list-table}
:align: left
:class: list-table

* - Name
  - Type
  - Description
* - `callback`
  - `DeviceManagerCallback`
  - Instance of the [DeviceManagerCallback](DeviceManagerCallback.md) class
```

### Sample Code

```java
deviceManager.setCallback(this);
```

---

## isConnected

Retrieves the connection status.

```java
public boolean isConnected()
```

### Return Value

```{list-table}
:align: left
:class: list-table

* - Type
  - Description
* - `boolean`
  - true: Connected / false: Not connected
```

### Sample Code

```java
boolean isConnected = deviceManager.isConnected();
```

---

## isPowerOn

Retrieves the power status.

```java
public boolean isPowerOn()
```

### Return Value

```{list-table}
:align: left
:class: list-table

* - Type
  - Description
* - `boolean`
  - true: Power on / false: Power off
```

### Sample Code

```java
boolean isPowerOn = deviceManager.isPowerOn();
```

---

## isOpen

Retrieves the status of the USB port.

```java
public boolean isOpen()
```

### Return Value

```{list-table}
:align: left
:class: list-table

* - Type
  - Description
* - `boolean`
  - true: Open / false: Closed
```

### Sample Code

```java
boolean isOpen = deviceManager.isOpen();
```

---

## initialize

Initializes the **DeviceManager**.

```java
public void initialize(Context context)
```

### Parameters

```{list-table}
:align: left
:class: list-table

* - Name
  - Type
  - Description
* - `context`
  - `Context`
  - Application or Activity context
```

### Sample Code

```java
DeviceManager.getInstance().initialize(context);
```

---

## setPower

Turns the power on or off.

```java
public void setPower(boolean power)
```

### Parameters

```{list-table}
:align: left
:class: list-table

* - Name
  - Type
  - Description
* - `power`
  - `boolean`
  - true: Power on / false: Power off
```

### Sample Code

```java
deviceManager.setPower(true);
```

---

## setPowerWithOption

Configures the AsReader power and its features.  
After executing this method, battery information is received via the [onCompletedPreparation](DeviceManagerCallback.md#oncompletedpreparation) callback.

```java
public void setPowerWithOption(
    boolean power,
    boolean beep,
    boolean vib,
    boolean led,
    boolean aimer,
    boolean powerOnBeep
)
```

### Parameters

```{list-table}
:align: left
:class: list-table

* - Name
  - Type
  - Description
* - `power`
  - `boolean`
  - true: Power on
* - `beep`
  - `boolean`
  - true: Beep on / false: Beep off
* - `vib`
  - `boolean`
  - true: Vibration on / false: Vibration off
* - `led`
  - `boolean`
  - true: LED on / false: LED off
* - `aimer`
  - `boolean`
  - true: Aimer on / false: Aimer off
* - `powerOnBeep`
  - `boolean`
  - true: Power-on beep on / false: Power-on beep off
```

### Sample Code

```java
deviceManager.setPowerWithOption(true, true, true, true, true, true);
```

---

## setReaderSettings

Configures the reader features.

```{admonition} Note
:class: warning
On ASR-M30S, only **beep** can be configured.
```

```java
public void setReaderSettings(boolean beep, boolean vib, boolean led, boolean aimer)
```

### Parameters

```{list-table}
:align: left
:class: list-table

* - Name
  - Type
  - Description
* - `beep`
  - `boolean`
  - true: Beep on / false: Beep off
* - `vib`
  - `boolean`
  - true: Vibration on / false: Vibration off
* - `led`
  - `boolean`
  - true: LED on / false: LED off (battery LED)
* - `aimer`
  - `boolean`
  - true: Aimer on / false: Aimer off
```

### Sample Code

```java
deviceManager.setReaderSettings(true, true, true, true);
```

---

## getBattery

Retrieves the battery information of the AsReader.  
After executing this method, information is received via the [onBatteryStateReceived](DeviceManagerCallback.md#onbatterystatereceived) callback.

```java
public void getBattery()
```

### Sample Code

```java
deviceManager.getBattery();
```

---

## getReaderInfo

Retrieves information about the AsReader.  
After executing this method, information is received via the following callbacks:  
- [onReaderInfoReceived](DeviceManagerCallback.md#onreaderinforeceived)  
- [onReaderAboutInfo](DeviceManagerCallback.md#onreaderaboutinfo)  
- [onReceivedRFIDModuleVersion](DeviceManagerCallback.md#onreceivedrfidmoduleversion)

```java
public void getReaderInfo(int type)
```

### Parameters

```{list-table}
:align: left
:class: list-table

* - Name
  - Type
  - Description
* - `type`
  - `int`
  - 0xB1 or 0xB2: Request firmware information  
    0x01: Request RF module information  
    0xB0: Request all AsReader configuration information
```

### Sample Code

```java
deviceManager.getReaderInfo(0xB1);
```

---

## isM30SDevice

Determines whether the AsReader model is ASR-M30S.

```java
public boolean isM30SDevice()
```

### Return Value

```{list-table}
:align: left
:class: list-table

* - Type
  - Description
* - `boolean`
  - true: ASR-M30S / false: Not ASR-M30S
```

### Sample Code

```java
boolean isM30S = deviceManager.isM30SDevice();
```