# Usage
## prepare
Request algorithm library and place the algorithm library to `${SDK}/vendor/amlogic/aml_csi/alg_lib/libaaisdk.so`.
And place related header files to following path:
`${SDK}/vendor/amlogic/aml_csi/alg_lib/include/iva/iva_wisense_ppd.hpp`
`${SDK}/vendor/amlogic/aml_csi/alg_lib/include/iva/iva.hpp`
`${SDK}/vendor/amlogic/aml_csi/alg_lib/include/iva/iva_wisense_ppd.hpp`

## Custom led
`${SDK}/vendor/amlogic/aml_csi/main.cpp` adaptation wisense_led_init()& wisense_led_set() function.


## Compile
Take ba401 as an example, add the following configuration to `${SDK}/buildroot/configs/amlogic/a4_ba401.config` file:
```
BR2_PACKAGE_AML_CSI=y
```

run the following command to compile:
```bash
make aml-csi-rebuild && make
```

## Config network
Start the system and then close system log(Optional)：
```bash
echo 1       4       1      7 > /proc/sys/kernel/printk
```

Connect to wifi：
```bash
wpa_cli -iwlan0 remove_network 0
wpa_cli -iwlan0 add_network 0
wpa_cli -iwlan0 set_network 0 ssid '"WiFi name"'
wpa_cli -iwlan0 set_network 0 key_mgmt WPA-PSK
wpa_cli -iwlan0 set_network 0 psk '"password"'
wpa_cli -iwlan0 set_network 0 pairwise CCMP TKIP
wpa_cli -iwlan0 set_network 0 group CCMP TKIP
wpa_cli -iwlan0 set_network 0 proto RSN
wpa_cli -iwlan0 enable_network 0
wpa_cli -iwlan0 status
wpa_cli -iwlan0 save
dhcpcd wlan0
```

## Run aml_wisense demo

```bash
aml_wisense -l level
```

level represents the detection sensitivity level, and the specified parameters are 1, 2, 3, and 4. The larger of the number, the higher the detection sensitivity of the algorithm.

# Development
## Pipeline
             csi data              csi data              wi_out_ret
wifi driver ---------> aml_wisense --------> wisense alg ----------> result

## parameter
aml_wisense will automatically obtain csi data and send it to the algorithm interface, and the algorithm will return the operation result(wi_out_ret).

wi_out_ret as follows:

- wi_out_ret.motion_status(int):
	- 1: There is motion that meets the level requirements.
	- 0: There is no motion that meets the level requirements.

- wi_out_ret.motion_class(int): The motion level detected by the algorithm, the larger of the value, the smaller the motion.
	- 1 or 2: Small motion, detect close range motion. A single person is within 3m range, and multiple people is within 5m range.
	- 3 or 4: Large motion, detect long distance motion or close range slight motion. Range up to 12m.
	- 0: There is no motion.

- wi_out_ret.motion_value(float): Motion complex value.
	Float value from 0 to 1, it reflects the complexity of the current motion environment. The larger of the value, the more complex of the current motion environment is.