HUSKYLENSArduino

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HUSKYLENSArduino

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# HUSKYLENS Arduino API

### Version:

0.1

### Designer:

Angelo (Angelo.qiao@dfrobot.com)

Robert (robert@dfrobot.com)

## struct HUSKYLENSResult

* **Description:** Structure to store the blocks or arrows
* **Member:**
  * `command` Use to determine whether this is arrow or block
    * `COMMAND_RETURN_BLOCK` It is a block
    * `COMMAND_RETURN_ARROW` It is an arrow
  * For a block:
    * `xCenter` X Center of Block
    * `yCenter` Y Center of Block
    * `width` Width of Block
    * `height` Height of Block
    * `ID` ID of Block, see **ID Meaning** below
  * For an arrow:
    * `xOrigin` X Origin of Arrow 
    * `yOrigin` Y Origin of Arrow
    * `xTarget` X Target of Arrow
    * `yTarget` Y Target of Arrow
    * `ID` ID of Arrow, see **ID Meaning** below
* **Example:**

```
void printResult(HUSKYLENSResult result){
    if (result.command == COMMAND_RETURN_BLOCK){
   Serial.println(String() + F("Block:xCenter=") + result.xCenter + F(",yCenter=") + result.yCenter + F(",width=") + result.width + F(",height=") + result.height + F(",ID=") + result.ID);
    }
    else if (result.command == COMMAND_RETURN_ARROW){
        Serial.println(String() + F("Arrow:xOrigin=") + result.xOrigin + F(",yOrigin=") + result.yOrigin + F(",xTarget=") + result.xTarget + F(",yTarget=") + result.yTarget + F(",ID=") + result.ID);
    }
    else{
        Serial.println("Object unknown!");
    }
}
```

## ID Meaning:

| ID  | Means                                                                       |
| --- | --------------------------------------------------------------------------- |
| 1   | The first learned item is detected                                          |
| 2   | The second learned item is detected                                         |
| XXX | The XXXth learned item is detected                                          |
| 0   | Item is detected but not learned, like unlearned faces block in grey color. |

## enum protocolAlgorithm

* **Description:** The enum of the algorithm. Needed when switch to the target algorithm.
* **Member:**
  * `ALGORITHM_FACE_RECOGNITION` FACE RECOGNITION
  * `ALGORITHM_OBJECT_TRACKING`OBJECT TRACKING
  * `ALGORITHM_OBJECT_RECOGNITION` OBJECT RECOGNITION
  * `ALGORITHM_LINE_TRACKING` LINE TRACKING
  * `ALGORITHM_COLOR_RECOGNITION` COLOR RECOGNITION
  * `ALGORITHM_TAG_RECOGNITION` TAG RECOGNITION
  * `ALGORITHM_OBJECT_CLASSIFICATION` OBJECT CLASSIFICATION

## bool begin(TwoWire& streamInput)

* **Description:** Setup procedure of HUSKYLENS with Wire(I2C). It will try connect to HUSKYLENS and return whether HUSKYLENS is connected.
  * **Arguments:**
    * `streamInput` : It could be Serial, Wire, SoftwareSerial, or other port based on Stream class.
  * **Returns:** Whether successful connect and contact with HUSKYLENS.

## bool begin(Stream& streamInput)

* **Description:** Setup procedure of HUSKYLENS. It will try connect to HUSKYLENS and return whether HUSKYLENS is connected.
  * **Arguments:**
    * `streamInput` : It could be Serial, Wire, SoftwareSerial, or other port based on Stream class.
  * **Returns:** Whether successful connect and contact with HUSKYLENS.

## **void** setTimeOutDuration(**unsigned** **long** timeOutDurationInput)

* **Description:** Use to set the time out duration on the transmit between request and received from HUSKYLENS to avoid waiting the feedback from HUSKYLENS for a long time. Default value is 100ms.
  * **Arguments:**
    * `timeOutDurationInput` : Time out duration on ms.

## bool request()

* **Description:** Request all blocks and arrows from HUSKYLENS. This is the place where all the transmit happens.
  * **Arguments:** None
  * **Returns:** Whether successfully get the result.

## bool request(int16_t ID)

* **Description:** Request only blocks and arrows tagged with `ID` from HUSKYLENS.
  * **Arguments:**
      * `ID` The target ID of  blocks and arrows
  * **Returns:** Whether successfully get the result.

## bool requestBlocks()
  * **Description:** Request all blocks from HUSKYLENS
  * **Returns:** Whether successfully get the result.

## bool requestBlocks(int16_t ID)
  * **Description:** Request only blocks tagged with `ID` from HUSKYLENS
  * **Arguments:**
    * `ID` The target ID of  blocks
  * **Returns:** Whether successfully get the result..

## bool requestArrows()
  * **Description:** Request all arrows from HUSKYLENS
  * **Arguments:**
      * `algorithmType` The algorithm you need. See protocolAlgorithm for details.
  * **Returns:** Whether successfully get the result.

## bool requestArrows(int16_t ID)

* **Description:** Request only arrows tagged with `ID` from HUSKYLENS
  * **Arguments:**
    * `ID` The target ID of  arrows
  * **Returns:** Whether successfully get the result.

## bool requestLearned()

* **Description:** Request all learned blocks and arrows (ID >=1) from HUSKYLENS.

* **Returns:** Whether successfully get the result.

## bool requestBlocksLearned()

* **Description:** Request all learned blocks (ID >=1) from HUSKYLENS.

* **Returns:** Whether successfully get the result.

## bool requestArrowsLearned()

* **Description:** Request all learned arrows (ID >=1) from HUSKYLENS.

* **Returns:** Whether successfully get the result.

## int available()

* **Description:** Return the count of blocks and arrows available to read. (Works like Serial or Wire)

* **Arguments:** None
  * **Returns:** The count of blocks and arrows left in the buffer.

## HUSKYLENSResult read()

* **Description:** Read blocks or arrows.(Works like Serial or Wire)

* **Returns:** blocks or arrows in struct HUSKYLENSResult. See HUSKYLENSResult above for details.

## bool isLearned()

* **Description:** Get whether HUSKYLENS have learn something.

* **Returns:** Whether HUSKYLENS have learn something.

## bool isLearned(**int** ID)

* **Description:** Get whether HUSKYLENS have learn something tagged with `ID`.
  * **Arguments:**
      * `ID` The target ID. See ID Meaning above for details.

* **Returns:** Whether HUSKYLENS have learn something tagged with `ID`.

## int16_t frameNumber()

* **Description:** Get the number of frame HUSKYLENS have processed. Once HUSKYLENS process one frame, this number will increase by one.

* **Returns:** The number of frame HUSKYLENS have processed.

## int16_t countLearnedIDs()

* **Description:** Get the count of (faces, colors, objects or lines) you have learned on HUSKYLENS. This value will depend on how many times you learn something on HUSKYLENS.

* **Returns:** The count of (faces, colors, objects or lines) you have learned on HUSKYLENS.

## int16_t count()

* **Description:** Get count of all blocks and arrows.

* **Returns:** The count of all blocks and arrows.

## int16_t count(int16_t ID)

* **Description:** Get count of all blocks and arrows tagged with `ID`. 
  * **Arguments:**
    * `ID` The target ID. See ID Meaning above for details.

* **Returns:** The count of all blocks and arrows tagged with `ID`.

## int16_t countBlocks()

* **Description:** Get count of all blocks.

* **Returns:** The count of all blocks.

## int16_t countBlocks(int16_t ID)

* **Description:** Get count of all blocks tagged with `ID`. 
  * **Arguments:**
    * `ID` The target ID. See ID Meaning above for details.

* **Returns:** The count of all blocks tagged with `ID`.

## int16_t countArrows()

* **Description:** Get count of all arrows.

* **Returns:** The count of all blocks and arrows.

## int16_t countArrows(int16_t ID)

* **Description:** Get count of all arrows tagged with `ID`. 
  * **Arguments:**
    * `ID` The target ID. See ID Meaning above for details.

* **Returns:** The count of all arrows tagged with `ID`.

## int16_t countLearned()

* **Description:** Get count of all learned blocks and arrows (ID >=1)

* **Returns:** The count of all learned blocks and arrows (ID >=1)

## int16_t countBlocksLearned()

* **Description:** Get count of all learned blocks (ID >=1)

* **Returns:** The count of all learned blocks (ID >=1)

## int16_t countArrowsLearned()

* **Description:** Get count of all learned arrows (ID >=1)

* **Returns:** The count of all learned arrows (ID >=1)

## HUSKYLENSResult get(int16_t index)

* **Description:** Get one of the blocks and arrows. 
  * **Arguments:**
    * `index` The index of blocks and arrows, which is ordered by the received sequence. It should less than `count()`

* **Returns:**  block or arrow in struct HUSKYLENSResult. See HUSKYLENSResult above for details.

## HUSKYLENSResult get(int16_t ID, int16_t index)

* **Description:** Get one of the blocks and arrows tagged with `ID`
  * **Arguments:**
    * `ID` The target ID. See ID Meaning above for details.
    * `index` The index of blocks and arrows, which is ordered by the received sequence. It should less than `count(ID)`

* **Returns:**  block or arrow tagged with `ID` in struct HUSKYLENSResult. See HUSKYLENSResult above for details.

## HUSKYLENSResult getBlock(int16_t index)

* **Description:** Get one of the blocks. 
  * **Arguments:**
    * `index` The index of blocks, which is ordered by the received sequence. It should less than `countBlocks()`

* **Returns:**  block in struct HUSKYLENSResult. See HUSKYLENSResult above for details.

## HUSKYLENSResult getBlock(int16_t ID, int16_t index)

* **Description:** Get one of the blocks tagged with `ID`
  * **Arguments:**
    * `ID` The target ID. See ID Meaning above for details.
    * `index` The index of blocks, which is ordered by the received sequence. It should less than `countBlocks(ID)`

* **Returns:**  block tagged with `ID` in struct HUSKYLENSResult. See HUSKYLENSResult above for details.

## HUSKYLENSResult getArrow(int16_t index)

* **Description:** Get one of the arrows. 
  * **Arguments:**
    * `index` The index of arrows, which is ordered by the received sequence. It should less than `countArrows()`

* **Returns:**  arrow in struct HUSKYLENSResult. See HUSKYLENSResult above for details.

## HUSKYLENSResult getArrow(int16_t ID, int16_t index)

* **Description:** Get one of the arrows tagged with `ID`
  * **Arguments:**
    * `ID` The target ID. See ID Meaning above for details.
    * `index` The index of arrow, which is ordered by the received sequence. It should less than `countArrows(ID)`

* **Returns:**  arrow tagged with `ID` in struct HUSKYLENSResult. See HUSKYLENSResult above for details.

## HUSKYLENSResult getLearned(int16_t index)

* **Description:** Get one of the learned blocks and arrows (ID >=1)
  * **Arguments:**
    * `index` The index of blocks and arrows, which is ordered by the received sequence. It should less than `countLearned()`

* **Returns:**  block or arrow in struct HUSKYLENSResult. See HUSKYLENSResult above for details.

## HUSKYLENSResult getBlockLearned(int16_t index)

* **Description:** Get one of the learned blocks (ID >=1)
  * **Arguments:**
    * `index` The index of blocks, which is ordered by the received sequence. It should less than `countBlocksLearned()`

* **Returns:**  block in struct HUSKYLENSResult. See HUSKYLENSResult above for details.

## HUSKYLENSResult getArrowLearned(int16_t index)
  * **Description:** Get one of the learned arrows (ID >=1)
  * **Arguments:**
    * `index` The index of arrows, which is ordered by the received sequence. It should less than `countArrowsLearned()`

* **Returns:**  arrow in struct HUSKYLENSResult. See HUSKYLENSResult above for details.

## **bool** writeAlgorithm(protocolAlgorithm algorithmType)

* **Description:** Let HUSKYLENS switch to the target algorithm you need.
  * **Arguments:**
      * `algorithmType` The target algorithm. See protocolAlgorithm for details.

* **Returns:** Whether success.

## **bool** writeLearn(**int** ID)

* **Description:** Let HUSKYLENS learn with `ID`. (It only works in Object Classification)
  * **Arguments:**
    * `ID` The target ID. See ID Meaning above for details.

* **Returns:** Whether success.

## **bool** writeForget()

* **Description:** Let HUSKYLENS forget all. (It only works in Object Classification)
 
* **Returns:** Whether success.

## **bool** setCustomName(String name,uint8_t id)

* **Description:** Set a custom name for a learned object with a specified ID. For example, if you have learned your face with an ID of 1, you can use setCustomName("Robert",1) to rename the learned face to "Robert".
  * **Arguments:**
      * `name` The specified custom name
      * `id`   The ID of the object you want to set the custom name for
  
* **Returns:** Whether success.
  
## **bool** savePictureToSDCard()
  * **Description:** Save a photo from the HuskyLens camera onto the SD Card. 
  * **Returns:** Whether success. If there is no SD Card inserted or an SD Card Error, there will be a UI popup on the HuskyLens outlining the issue.

## **bool** saveScreenshotToSDCard()
  * **Description:** Save a screenshot of the HuskyLens UI onto the SD Card. 
  * **Returns:** Whether success.

## **bool** saveModelToSDCard(int fileNum)
  * **Description:** Save the current algorithms model file (its learned object data) to the SD Card. The file will be the in the format "AlgorithimName_Backup_*FileNum*.conf"
  * **Arguments:**
      * `fileNum` The specified file number to be used in the name for the file
  * **Returns:** Whether success. If there is no SD Card inserted or an SD Card Error, there will be a UI popup on the HuskyLens outlining the issue.

## **bool** loadModelFromSDCard(int fileNum)
  * **Description:** Load a model file from the SD Card to the current algorithm and refresh the algorithm. The loaded file will be the following format "AlgorithimName_Backup_*FileNum*.conf" 
  * **Arguments:**
      * `fileNum` The specified file number to be used in the name for the file
  * **Returns:** Whether success. If there is no SD Card inserted or an SD Card Error, there will be a UI popup on the HuskyLens outlining the issue.

## **bool** customText(String text,uint16_t x,uint8_t y)
  * **Description:** Place a string of text (less than 20 characters) on top of the HuskyLens UI. The position of the texts (X,Y) coordinate is the top left of the text box.
    * You can have at most 10 custom texts on the UI at once, and if you continue adding texts you will replace previous texts in a circular fashion. For example, if you enter 10 texts you will fill the text buffer.  If you then insert a new text object, you will overwrite the first text position (textBuffer[0]). Inserting another new text object will overwrite the second text position (textBuffer[1]). 
    * Each text is uniquely identified by its (X,Y) coordinate, so you can replace the text string at a (X,Y) coordinate instead of adding a new text object. For example, if you insert "TEST_1" at (120,120) and then later submit "TEST_2" at (120,120), you will replace the string "TEST_1" with "TEST_2" and maintain an overall text count of 1.
  * **Arguments:**
      * `text` The specified text you wish to enter on the screen
      * `x` The X coordinate for the UI Object (0-320)
      * `y` The Y coordinate for the UI Object (0-240)
  * **Returns:** Whether success.

## **bool** clearCustomText()
  * **Description:** Clear and delete all custom UI texts from the screen.
  * **Returns:** Whether success.

## **bool** isPro()
  * **Description:** Detect whether the HuskyLens is a Pro or Standard Model
  * **Returns:** True is Pro Model, False if Standard
 
## **bool** checkFirmwareVersion()
  * **Description:** Check if the onboard firmware is out of date. If it is an old firmware, there will be a UI message that pops   up on the screen 
  * **Returns:** Whether success.

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