根据连老师的教程:鸿蒙第4节 Hi3861 Wifi操作,热点连接 - HarmonyOS技术社区 - 电子技术论坛 - 广受欢迎的专业电子论坛! (elecfans.com)。但是我用的liteOs直接复制过去还是不行的,仔细阅读源码后,修改好后可以连上热点了,下面分享一下我的例程:
1、在appdemosrc下新建wifi_demo.c:
然后建立如下代码:
- #include <stdio.h>
- #include <unistd.h>
- #include <unistd.h>
- #include "hi_wifi_api.h"
- #include "lwip/ip_addr.h"
- #include "lwip/netifapi.h"
- #define APP_INIT_VAP_NUM 2
- #define APP_INIT_USR_NUM 2
- static struct netif *g_lwip_netif = NULL;
- /* clear netif's ip, gateway and netmask */
- void hi_sta_reset_addr(struct netif *pst_lwip_netif)
- {
- ip4_addr_t st_gw;
- ip4_addr_t st_ipaddr;
- ip4_addr_t st_netmask;
- printf("%s %d rn", __FILE__, __LINE__);
- if (pst_lwip_netif == NULL) {
- printf("hisi_reset_addr::Null param of netdevrn");
- return;
- }
- IP4_ADDR(&st_gw, 0, 0, 0, 0);
- IP4_ADDR(&st_ipaddr, 0, 0, 0, 0);
- IP4_ADDR(&st_netmask, 0, 0, 0, 0);
- netifapi_netif_set_addr(pst_lwip_netif, &st_ipaddr, &st_netmask, &st_gw);
- }
- void wifi_wpa_event_cb(const hi_wifi_event *hisi_event)
- {
- if (hisi_event == NULL)
- return;
- switch (hisi_event->event) {
- case HI_WIFI_EVT_SCAN_DONE:
- printf("WiFi: Scan results availablen");
- break;
- case HI_WIFI_EVT_CONNECTED:
- printf("WiFi: Connectedn");
- netifapi_dhcp_start(g_lwip_netif);
- break;
- case HI_WIFI_EVT_DISCONNECTED:
- printf("WiFi: Disconnectedn");
- netifapi_dhcp_stop(g_lwip_netif);
- hi_sta_reset_addr(g_lwip_netif);
- break;
- case HI_WIFI_EVT_WPS_TIMEOUT:
- printf("WiFi: wps is timeoutn");
- break;
- default:
- break;
- }
- }
- int hi_wifi_start_connect(void)
- {
- int ret;
- errno_t rc;
- hi_wifi_assoc_request assoc_req = {0};
- /* copy SSID to assoc_req */
- //热点名称
- rc = memcpy_s(assoc_req.ssid, HI_WIFI_MAX_SSID_LEN + 1, "you ssid", sizeof("you ssid")); /* 9:ssid length */
- if (rc != EOK) {
- printf("%s %d rn", __FILE__, __LINE__);
- return -1;
- }
- /*
- * OPEN mode
- * for WPA2-PSK mode:
- * set assoc_req.auth as HI_WIFI_SECURITY_WPA2PSK,
- * then memcpy(assoc_req.key, "12345678", 8).
- */
- //热点加密方式
- assoc_req.auth = HI_WIFI_SECURITY_WPA2PSK;
- /* 热点密码 */
- memcpy(assoc_req.key, "you pwd", sizeof("you pwd"));
- ret = hi_wifi_sta_connect(&assoc_req);
- if (ret != HISI_OK) {
- printf("%s %d rn", __FILE__, __LINE__);
- return -1;
- }
- printf("%s %d rn", __FILE__, __LINE__);
- //printf("%srn",g_lwip_netif->flags);
- return 0;
- }
- int hi_wifi_start_sta(void)
- {
- int ret;
- char ifname[WIFI_IFNAME_MAX_SIZE + 1] = {0};
- int len = sizeof(ifname);
- const unsigned char wifi_vap_res_num = APP_INIT_VAP_NUM;
- const unsigned char wifi_user_res_num = APP_INIT_USR_NUM;
- unsigned int num = WIFI_SCAN_AP_LIMIT;
- printf("%s %d rn", __FILE__, __LINE__);
- ret = hi_wifi_init(wifi_vap_res_num, wifi_user_res_num);
- if (ret != HISI_OK) {
- printf("%s %d rn", __FILE__, __LINE__);
- //return -1;
- }
- printf("%s %d rn", __FILE__, __LINE__);
- ret = hi_wifi_sta_start(ifname, &len);
- if (ret != HISI_OK) {
- printf("%s %d rn", __FILE__, __LINE__);
- return -1;
- }
- /* register call back function to receive wifi event, etc scan results event,
- * connected event, disconnected event.
- */
- ret = hi_wifi_register_event_callback(wifi_wpa_event_cb);
- if (ret != HISI_OK) {
- printf("register wifi event callback faiLEDn");
- }
- /* acquire netif for IP operation */
- g_lwip_netif = netifapi_netif_find(ifname);
- if (g_lwip_netif == NULL) {
- printf("%s: get netif failedn", __FUNCTION__);
- return -1;
- }
- /* start scan, scan results event will be received soon */
- ret = hi_wifi_sta_scan();
- if (ret != HISI_OK) {
- printf("%s %d rn", __FILE__, __LINE__);
- return -1;
- }
- sleep(5); /* sleep 5s, waiting for scan result. */
- hi_wifi_ap_info *pst_results = malloc(sizeof(hi_wifi_ap_info) * WIFI_SCAN_AP_LIMIT);
- if (pst_results == NULL) {
- printf("%s %d rn", __FILE__, __LINE__);
- return -1;
- }
- ret = hi_wifi_sta_scan_results(pst_results, &num);
- if (ret != HISI_OK) {
- printf("%s %d rn", __FILE__, __LINE__);
- free(pst_results);
- return -1;
- }
- for (unsigned int loop = 0; (loop < num) && (loop < WIFI_SCAN_AP_LIMIT); loop++) {
- printf("SSID: %sn", pst_results[loop].ssid);
- }
- free(pst_results);
- /* if received scan results, select one SSID to connect */
- ret = hi_wifi_start_connect();
- if (ret != 0) {
- printf("%s %d rn", __FILE__, __LINE__);
- return -1;
- }
- return 0;
- }
- void hi_wifi_stop_sta(void)
- {
- int ret;
- ret = hi_wifi_sta_stop();
- if (ret != HISI_OK) {
- printf("failed to stop stan");
- }
- ret = hi_wifi_deinit();
- if (ret != HISI_OK) {
- printf("failed to deinit wifin");
- }
- g_lwip_netif = NULL;
- }
复制代码大家把you ssid、you pwd更换成自己的wifi热点名称与密码。
然后在app_main函数中增加:
- extern int hi_wifi_start_sta(void);
- hi_wifi_start_sta();
复制代码编后编译下载就可以连上自己家的路由器了:
从路由器上看到连上一个客户端,ip地址为192.168.3.14,然后可以ping通:
【总结】经过这个示例的学习,可以设置自己的ssidpwd连上wifi。下一步学习tcpmqtt等示例。