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# OpenIPC Wiki
[Table of Content](../README.md)
Adding a wifi driver to your firmware
---
Since most cameras have very little flash memory, openipc images don't contain many wifi drivers, as they can easily be 1.5MB+ per driver.
This means that in many cases, you will have to add the appropriate wifi driver to your firmware image.
### Step 1: preparing the build environment
You will need a Linux environment. First download the openipc firmware repository:
```
git clone https://github.com/OpenIPC/firmware.git openipc-firmware
cd openipc-firmware
```
Install packages required for building:
```
sudo make deps
```
### Step 2: determine the driver package
Here are some of the most common wifi driver packages:
```
# AIC:
BR2_PACKAGE_AIC8800_OPENIPC
# Altobeam:
BR2_PACKAGE_ATBM60XX
BR2_PACKAGE_ATBM6441
# iComm:
BR2_PACKAGE_SSV6X5X_OPENIPC
# MediaTek:
BR2_PACKAGE_MT7601U_OPENIPC
# SigmaStar:
BR2_PACKAGE_SSW101B
# Realtek:
BR2_PACKAGE_RTL8188EUS_OPENIPC
BR2_PACKAGE_RTL8188FU_OPENIPC
BR2_PACKAGE_RTL8189ES_OPENIPC
BR2_PACKAGE_RTL8189FS_OPENIPC
BR2_PACKAGE_RTL8192EU_OPENIPC
BR2_PACKAGE_RTL8733BU_OPENIPC
BR2_PACKAGE_RTL8812AU_OPENIPC
```
Take note of the `BR2_PACKAGE` variable for the driver you need.
### Step 3: add BR2_PACKAGE variable to your firmware configuration
The firmware configuration files are ordered per chipset in the `br-ext-chip-*`directories. Move into the directory for the chipset you are building for, then move into the `/configs/` directory.
Example: you have a hisilicon chipset:
`cd br-ext-chip-hisilicon/configs/`
Inside you will see a number of `_defconfig` files. Open the file for your desired chip and firmware flavor in a text editor.
Add the appropriate `BR2_PACKAGE` variable to this file, adding `=y` to the end of the variable.
Example: you want to add the RTL8188EUS driver:
`BR2_PACKAGE_RTL8188EUS_OPENIPC=y`
### Step 4: Build your firmware
Return to the root directory of the openipc firmware directory `openipc-firmware/`.
Run `./building.sh` and select the configuration you have edited in the previous step.
Alternatively, you can run `./building.sh <your_config>`, where `<your_config>` is the name of the config file you have just edited, minus the `_defconfig`
Example: you want to build `ultimate` for `hi3516ev200`:
`./building.sh hi3516ev200_ultimate`