Bearpi开发板HarmonyOS之WiFi STA联网
wifi_device.h接口简介
-
启用Wifi STA 模式
WifiErrorCode EnableWifi(void); -
禁用Wifi STA 模式
WifiErrorCode DisableWifi(void); -
检查Wifi STA模式是否启用
int IsWifiActive(void); -
获取所有扫描到的热点列表
WifiErrorCode GetScanInfoList(WifiScanInfo* result, unsigned int* size); -
配置连接到热点信息
WifiErrorCode AddDeviceConfig(const WifiDeviceConfig* config, int* result); -
获取配置连接到热点信息
WifiErrorCode GetDeviceConfigs(WifiDeviceConfig* result, unsigned int* size); -
删除指定的热点配置信息
WifiErrorCode RemoveDevice(int networkId); -
接到指定的热点
WifiErrorCode ConnectTo(int networkId); -
断开Wifi连接
WifiErrorCode Disconnect(void); -
获取热点连接信息
WifiErrorCode GetLinkedInfo(WifiLinkedInfo* result); -
获取设备的MAC地址
WifiErrorCode GetDeviceMacAddress(unsigned char* result);
连接到指定wifi代码
#include #include #include "ohos_init.h"#include #include "cmsis_os2.h"#include "wifiiot_gpio.h"#include "wifiiot_gpio_ex.h"#include "wifiiot_adc.h"#include "wifiiot_errno.h"#include "wifiiot_uart.h"#include "lwip/netifapi.h"#include "wifi_hotspot.h"#include "wifi_device.h"#include "wifi_error_code.h"#include "lwip/netif.h"#include "lwip/ip4_addr.h"#include "lwip/api_shell.h"#define DEF_TIMEOUT 15#define ONE_SECOND 1static void WiFiInit(void);static void WaitSacnResult(void);static int WaitConnectResult(void);static void OnWifiScanStateChangedHandler(int state, int size);static void OnWifiConnectionChangedHandler(int state, WifiLinkedInfo *info);static void OnHotspotStaJoinHandler(StationInfo *info);static void OnHotspotStateChangedHandler(int state);static void OnHotspotStaLeaveHandler(StationInfo *info);static int g_staScanSuccess = 0;static int g_ConnectSuccess = 0;static int ssid_count = 0;WifiEvent g_wifiEventHandler = {0};WifiErrorCode error;#define SELECT_WLAN_PORT "wlan0"#define SELECT_WIFI_SSID "JamesZhou"#define SELECT_WIFI_PASSWORD "12345678"#define SELECT_WIFI_SECURITYTYPE WIFI_SEC_TYPE_PSKstatic void WiFiInit(void){ g_wifiEventHandler.OnHotspotStaLeave = OnHotspotStaLeaveHandler; g_wifiEventHandler.OnHotspotStateChanged = OnHotspotStateChangedHandler; g_wifiEventHandler.OnHotspotStaJoin = OnHotspotStaJoinHandler; g_wifiEventHandler.OnWifiConnectionChanged = OnWifiConnectionChangedHandler; g_wifiEventHandler.OnWifiScanStateChanged = OnWifiScanStateChangedHandler; error = RegisterWifiEvent(&g_wifiEventHandler); if (error != WIFI_SUCCESS) { printf("register wifi event fail!\r\n"); } else { printf("register wifi event succeed!\r\n"); }}static void OnWifiScanStateChangedHandler(int state, int size){ (void)state; if(size > 0) { ssid_count = size; g_staScanSuccess = 1; }}static void OnWifiConnectionChangedHandler(int state, WifiLinkedInfo *info){ (void)info; if(state > 0) {g_ConnectSuccess = 1;printf("callback function for wifi connect\r\n"); } else { printf("connect error,please check password\r\n"); }}static void OnHotspotStateChangedHandler(int state){ printf("HotspotStateChanged:state is %d.\n", state); }static void OnHotspotStaJoinHandler(StationInfo *info){ (void)info; printf("STA join AP\n");}static void OnHotspotStaLeaveHandler(StationInfo *info){ (void)info; printf("HotspotStaLeave:info is null.\n");}static void WaitSacnResult(void){ int scanTimeout = DEF_TIMEOUT; while(scanTimeout) { sleep(ONE_SECOND); scanTimeout--; if (g_staScanSuccess == 1) { printf("WaitSacnResult:wait success[%d]s\n", (DEF_TIMEOUT - scanTimeout)); break; } } if (scanTimeout <= 0) {printf("WaitSacnResult:timeout!\n"); }}static int WaitConnectResult(void){ int ConnectTimeout = DEF_TIMEOUT; while (ConnectTimeout > 0) { sleep(1); ConnectTimeout--; if (g_ConnectSuccess == 1) { printf("WaitConnectResult:wait success[%d]s\n", (DEF_TIMEOUT - ConnectTimeout)); break; } } if (ConnectTimeout <= 0) { printf("WaitConnectResult:timeout!\n"); return 0; } return 1;}static BOOL WifiSTATask(void){ WifiScanInfo *info = NULL; unsigned int size = WIFI_SCAN_HOTSPOT_LIMIT; static struct netif *g_lwip_netif = NULL; WifiDeviceConfig select_ap_config = {0}; osDelay(200); printf("\r\n"); //初始化WIFI WiFiInit(); //使能WIFI if (EnableWifi() != WIFI_SUCCESS) { printf("EnableWifi failed, error = %d\n", error); return -1; } //判断WIFI是否激活 if (IsWifiActive() == 0) { printf("Wifi station is not actived.\n"); return -1; } info = malloc(sizeof(WifiScanInfo) * WIFI_SCAN_HOTSPOT_LIMIT); if (info == NULL) { return -1; } //轮询查找WiFi列表 do{ //重置标志位 ssid_count = 0; g_staScanSuccess = 0; //开始扫描 Scan(); //等待扫描结果 WaitSacnResult(); //获取扫描列表 error = GetScanInfoList(info, &size); }while(g_staScanSuccess != 1); //打印WiFi列表 printf("********************\r\n"); for(uint8_t i = 0; i < ssid_count; i++) { printf("no:%03d, ssid:%-30s, rssi:%5d\r\n", i+1, info[i].ssid, info[i].rssi/100); } printf("********************\r\n"); //连接指定的WiFi热点 for(uint8_t i = 0; i < ssid_count; i++) { if (strcmp(SELECT_WIFI_SSID, info[i].ssid) == 0) { int result; printf("Select:%3d wireless, Waiting...\r\n", i+1); //拷贝要连接的热点信息 strcpy(select_ap_config.ssid, info[i].ssid); strcpy(select_ap_config.preSharedKey, SELECT_WIFI_PASSWORD); select_ap_config.securityType = SELECT_WIFI_SECURITYTYPE; if (AddDeviceConfig(&select_ap_config, &result) == WIFI_SUCCESS) { if (ConnectTo(result) == WIFI_SUCCESS && WaitConnectResult() == 1) { printf("WiFi connect succeed!\r\n"); g_lwip_netif = netifapi_netif_find(SELECT_WLAN_PORT); break; } } } if(i == ssid_count-1) { printf("ERROR: No wifi as expected\r\n"); while(1) osDelay(100); } } //启动DHCP if (g_lwip_netif) { dhcp_start(g_lwip_netif); printf("begain to dhcp"); }//等待DHCP for(;;) { if(dhcp_is_bound(g_lwip_netif) == ERR_OK) { printf("\r\n"); //打印获取到的IP信息 netifapi_netif_common(g_lwip_netif, dhcp_clients_info_show, NULL); break; } printf("\r\n"); osDelay(100); } //执行其他操作 for(;;) { osDelay(100); }} static void my_led_example(void){ osThreadAttr_t attr; attr.attr_bits = 0; attr.name = "WifiSTATask"; attr.cb_mem = NULL; attr.cb_size = 0; attr.priority = 24; attr.stack_size = 10240; if(osThreadNew((osThreadFunc_t)WifiSTATask,NULL,&attr) == NULL) { printf("Falied to create adc_func!\n"); }}SYS_RUN(my_led_example);运行效果
