WLAN

/drivers/peripheral/wlan
├── client             # Client that implements the communication between the user space and kernel space
│   └── include       # Client header files
│   └── src           # Client code
├── hal                # HAL code
│   └── include       # HAL header files
│   └── src           # HAL code implementation
├── interfaces         # APIs exposed externally
│   └── include       # Header files containing APIs exposed externally

#include "wifi_hal.h"
#include "wifi_hal_sta_feature.h"
#include "wifi_hal_ap_feature.h"
#include "wifi_hal_cmd.h"
#include "wifi_hal_event.h"

#define MAC_LEN 6

static void *hal_main()
{
    int ret;
    struct IWiFi *wifi;

    /* Create an IWiFi object. */
    ret = WifiConstruct(&wifi);
    if (ret != 0 || wifi == NULL) {
        return;
    }

    /* Create a channel between the HAL and the driver. */
    ret = wifi->start(wifi);
    if (ret != 0) {
        return;
    }

    /* Create an AP feature. */
    ret = wifi->createFeature(PROTOCOL_80211_IFTYPE_AP, (struct IWiFiBaseFeature **)&apFeature);
    if (ret != 0) {
        return;
    }

    /* Obtain the device MAC address. */
    unsigned char mac[MAC_LEN] = {0};
    ret = apFeature->baseFeature.getDeviceMacAddress((struct IWiFiBaseFeature *)apFeature, mac, MAC_LEN);
    if (ret != 0) {
        return;
    }

    /* Destroy the created AP feature. */
    ret = wifi->destroyFeature((struct IWiFiBaseFeature *)apFeature);
    if (ret != 0) {
        return;
    }

    /* Stop the created channel. */
    ret = wifi->stop(wifi);
    if (ret != 0) {
        return;
    }

    /* Destroy the created IWiFi object. */
    ret = WifiDestruct(&wifi);
    if (ret != 0) {
        return;
    }
    return;
}