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====== Edge2 Download Android Source Code ======

===== Introduction =====

This document mainly introduces how to download the Android source code of Edge2.

===== Get Source Code =====

Install git-lfs tool to download Android 12.0 SDK

```shell
$ sudo apt install git-lfs
```

1. Create an empty directory to hold your working files.

```shell
$ mkdir -p WORKING_DIRECTORY
$ cd WORKING_DIRECTORY
```

2. Run ''repo init'' to download the manifest repository first.

<tabbox Android 13>
```shell
$ repo init -u https://github.com/khadas/android_manifest.git -b khadas-edge2-android13
```

<tabbox Android 12>
```shell
$ repo init -u https://github.com/khadas/android_manifest.git -b khadas-edge2-android12
```
</tabbox>

3. Run ''repo sync'' to pull down the Android source tree.

```shell
$ repo sync -j4
```

The initial sync operation may take an hour or more to complete.

<WRAP info >
You might need to run above command repeatly if it fails halfway. Or you can try with this script instead:
```bash sync_helper.sh
#!/bin/bash
repo sync -j4
while [ $? = 1 ]; do
	echo "Sync failed, repeat again:"
	repo sync -j4
done
```

If needed, press ''Ctrl''+''C'' to quit.

</WRAP>

4. Go to the following directory and execute the ''git lfs pull'' command to pull large files. Otherwise, compilation will report an [[https://forum.khadas.com/t/cannot-build-an-android/15886|error]].

<tabbox Android 13>

```shell
external/camera_engine_rkaiq
device/khadas/rk3588
```
```shell
/users/Edge2$ cd external/camera_engine_rkaiq
/users/Edge2/external/camera_engine_rkaiq$ 
/users/Edge2/external/camera_engine_rkaiq$ git lfs pull
Git LFS: (4 of 4 files) 208.97 MB / 208.97 MB                                                                                                                                                                                             
/users/Edge2/external/camera_engine_rkaiq$ cd -
/users/Edge2
/users/Edge2$ cd device/khadas/rk3588
/users/Edge2/device/khadas/rk3588$ git lfs pull
Git LFS: (1 of 1 files) 211.07 MB / 211.07 MB
```

<tabbox Android 12>

```shell
external/camera_engine_rkaiq
prebuilts/module_sdk
device/khadas/rk3588
```
```shell
/users/Edge2$ cd external/camera_engine_rkaiq
/users/Edge2/external/camera_engine_rkaiq$ 
/users/Edge2/external/camera_engine_rkaiq$ git lfs pull
Git LFS: (4 of 4 files) 208.97 MB / 208.97 MB                                                                                                                                                                                             
/users/Edge2/external/camera_engine_rkaiq$ cd -
/users/Edge2
/users/Edge2$ cd prebuilts/module_sdk
/users/Edge2/prebuilts/module_sdk$ git lfs pull
Git LFS: (3 of 3 files) 936.69 MB / 936.69 MB                                                                                                                                                                                             
/users/Edge2/prebuilts/module_sdk$ cd -
/users/Edge2
/users/Edge2$ cd device/khadas/rk3588
/users/Edge2/device/khadas/rk3588$ git lfs pull
Git LFS: (1 of 1 files) 211.07 MB / 211.07 MB
```
</tabbox>

5. Begin a new branch for development.

```shell
$ repo start <BRANCH_NAME> --all
```

===== See Also =====

  * [[https://source.android.com/source/downloading.html|Android Official Documents]]
  * [[/products/sbc/edge2/development/android/build-android|Build Android]]
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