279 lines
10 KiB
C
279 lines
10 KiB
C
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/**
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* Copyright (c) HiSilicon (Shanghai) Technologies Co., Ltd. 2022-2023. All rights reserved.
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*
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* Description: Application core main function for standard \n
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*
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* History: \n
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* 2022-07-27, Create file. \n
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*/
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#include "lwip/netifapi.h"
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#include "wifi_hotspot.h"
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#include "wifi_hotspot_config.h"
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#include "td_base.h"
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#include "td_type.h"
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#include "stdlib.h"
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#include "uart.h"
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#include "cmsis_os2.h"
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#include "app_init.h"
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#include "soc_osal.h"
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#define WIFI_IFNAME_MAX_SIZE 16
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#define WIFI_MAX_SSID_LEN 33
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#define WIFI_SCAN_AP_LIMIT 64
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#define WIFI_MAC_LEN 6
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#define WIFI_STA_SAMPLE_LOG "[WIFI_STA_SAMPLE]"
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#define WIFI_NOT_AVALLIABLE 0
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#define WIFI_AVALIABE 1
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#define WIFI_GET_IP_MAX_COUNT 300
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#define WIFI_TASK_PRIO (osPriority_t)(13)
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#define WIFI_TASK_DURATION_MS 2000
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#define WIFI_TASK_STACK_SIZE 0x1000
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static td_void wifi_scan_state_changed(td_s32 state, td_s32 size);
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static td_void wifi_connection_changed(td_s32 state, const wifi_linked_info_stru *info, td_s32 reason_code);
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wifi_event_stru wifi_event_cb = {
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.wifi_event_connection_changed = wifi_connection_changed,
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.wifi_event_scan_state_changed = wifi_scan_state_changed,
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};
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enum {
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WIFI_STA_SAMPLE_INIT = 0, /* 0:初始态 */
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WIFI_STA_SAMPLE_SCANING, /* 1:扫描中 */
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WIFI_STA_SAMPLE_SCAN_DONE, /* 2:扫描完成 */
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WIFI_STA_SAMPLE_FOUND_TARGET, /* 3:匹配到目标AP */
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WIFI_STA_SAMPLE_CONNECTING, /* 4:连接中 */
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WIFI_STA_SAMPLE_CONNECT_DONE, /* 5:关联成功 */
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WIFI_STA_SAMPLE_GET_IP, /* 6:获取IP */
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} wifi_state_enum;
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static td_u8 g_wifi_state = WIFI_STA_SAMPLE_INIT;
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/*****************************************************************************
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STA 扫描事件回调函数
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*****************************************************************************/
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static td_void wifi_scan_state_changed(td_s32 state, td_s32 size)
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{
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UNUSED(state);
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UNUSED(size);
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PRINT("%s::Scan done!.\r\n", WIFI_STA_SAMPLE_LOG);
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g_wifi_state = WIFI_STA_SAMPLE_SCAN_DONE;
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return;
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}
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/*****************************************************************************
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STA 关联事件回调函数
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*****************************************************************************/
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static td_void wifi_connection_changed(td_s32 state, const wifi_linked_info_stru *info, td_s32 reason_code)
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{
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UNUSED(info);
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UNUSED(reason_code);
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if (state == WIFI_NOT_AVALLIABLE) {
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PRINT("%s::Connect fail!. try agin !\r\n", WIFI_STA_SAMPLE_LOG);
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g_wifi_state = WIFI_STA_SAMPLE_INIT;
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} else {
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PRINT("%s::Connect succ!.\r\n", WIFI_STA_SAMPLE_LOG);
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g_wifi_state = WIFI_STA_SAMPLE_CONNECT_DONE;
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}
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}
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/*****************************************************************************
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STA 匹配目标AP
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*****************************************************************************/
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td_s32 example_get_match_network(wifi_sta_config_stru *expected_bss)
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{
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td_s32 ret;
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td_u32 num = 64; /* 64:扫描到的Wi-Fi网络数量 */
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td_char expected_ssid[] = "my_softAP";
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td_char key[] = "my_password"; /* 待连接的网络接入密码 */
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td_bool find_ap = TD_FALSE;
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td_u8 bss_index;
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/* 获取扫描结果 */
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td_u32 scan_len = sizeof(wifi_scan_info_stru) * WIFI_SCAN_AP_LIMIT;
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wifi_scan_info_stru *result = osal_kmalloc(scan_len, OSAL_GFP_ATOMIC);
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if (result == TD_NULL) {
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return -1;
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}
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memset_s(result, scan_len, 0, scan_len);
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ret = wifi_sta_get_scan_info(result, &num);
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if (ret != 0) {
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osal_kfree(result);
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return -1;
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}
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/* 筛选扫描到的Wi-Fi网络，选择待连接的网络 */
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for (bss_index = 0; bss_index < num; bss_index ++) {
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if (strlen(expected_ssid) == strlen(result[bss_index].ssid)) {
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if (memcmp(expected_ssid, result[bss_index].ssid, strlen(expected_ssid)) == 0) {
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find_ap = TD_TRUE;
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break;
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}
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}
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}
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/* 未找到待连接AP,可以继续尝试扫描或者退出 */
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if (find_ap == TD_FALSE) {
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osal_kfree(result);
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return -1;
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}
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/* 找到网络后复制网络信息和接入密码 */
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if (memcpy_s(expected_bss->ssid, WIFI_MAX_SSID_LEN, expected_ssid, strlen(expected_ssid)) != 0) {
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osal_kfree(result);
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return -1;
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}
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if (memcpy_s(expected_bss->bssid, WIFI_MAC_LEN, result[bss_index].bssid, WIFI_MAC_LEN) != 0) {
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osal_kfree(result);
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return -1;
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}
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expected_bss->security_type = result[bss_index].security_type;
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if (memcpy_s(expected_bss->pre_shared_key, WIFI_MAX_SSID_LEN, key, strlen(key)) != 0) {
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osal_kfree(result);
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return -1;
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}
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expected_bss->ip_type = 1; /* 1：IP类型为动态DHCP获取 */
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osal_kfree(result);
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return 0;
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}
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/*****************************************************************************
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STA 关联状态查询
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*****************************************************************************/
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td_bool example_check_connect_status(td_void)
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{
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td_u8 index;
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wifi_linked_info_stru wifi_status;
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/* 获取网络连接状态，共查询5次，每次间隔500ms */
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for (index = 0; index < 5; index ++) {
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(void)osDelay(50); /* 50: 延时500ms */
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memset_s(&wifi_status, sizeof(wifi_linked_info_stru), 0, sizeof(wifi_linked_info_stru));
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if (wifi_sta_get_ap_info(&wifi_status) != 0) {
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continue;
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}
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if (wifi_status.conn_state == 1) {
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return 0; /* 连接成功退出循环 */
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}
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}
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return -1;
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}
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/*****************************************************************************
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STA DHCP状态查询
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*****************************************************************************/
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td_bool example_check_dhcp_status(struct netif *netif_p, td_u32 *wait_count)
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{
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if ((ip_addr_isany(&(netif_p->ip_addr)) == 0) && (*wait_count <= WIFI_GET_IP_MAX_COUNT)) {
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/* DHCP成功 */
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PRINT("%s::STA DHCP success.\r\n", WIFI_STA_SAMPLE_LOG);
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return 0;
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}
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if (*wait_count > WIFI_GET_IP_MAX_COUNT) {
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PRINT("%s::STA DHCP timeout, try again !.\r\n", WIFI_STA_SAMPLE_LOG);
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*wait_count = 0;
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g_wifi_state = WIFI_STA_SAMPLE_INIT;
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}
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return -1;
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}
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td_s32 example_sta_function(td_void)
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{
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td_char ifname[WIFI_IFNAME_MAX_SIZE + 1] = "wlan0"; /* 创建的STA接口名 */
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wifi_sta_config_stru expected_bss = {0}; /* 连接请求信息 */
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struct netif *netif_p = TD_NULL;
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td_u32 wait_count = 0;
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/* 创建STA接口 */
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if (wifi_sta_enable() != 0) {
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return -1;
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}
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PRINT("%s::STA enable succ.\r\n", WIFI_STA_SAMPLE_LOG);
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do {
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(void)osDelay(1); /* 1: 等待10ms后判断状态 */
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if (g_wifi_state == WIFI_STA_SAMPLE_INIT) {
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PRINT("%s::Scan start!\r\n", WIFI_STA_SAMPLE_LOG);
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g_wifi_state = WIFI_STA_SAMPLE_SCANING;
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/* 启动STA扫描 */
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if (wifi_sta_scan() != 0) {
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g_wifi_state = WIFI_STA_SAMPLE_INIT;
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continue;
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}
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} else if (g_wifi_state == WIFI_STA_SAMPLE_SCAN_DONE) {
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/* 获取待连接的网络 */
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if (example_get_match_network(&expected_bss) != 0) {
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PRINT("%s::Do not find AP, try again !\r\n", WIFI_STA_SAMPLE_LOG);
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g_wifi_state = WIFI_STA_SAMPLE_INIT;
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continue;
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}
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g_wifi_state = WIFI_STA_SAMPLE_FOUND_TARGET;
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} else if (g_wifi_state == WIFI_STA_SAMPLE_FOUND_TARGET) {
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PRINT("%s::Connect start.\r\n", WIFI_STA_SAMPLE_LOG);
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g_wifi_state = WIFI_STA_SAMPLE_CONNECTING;
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/* 启动连接 */
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if (wifi_sta_connect(&expected_bss) != 0) {
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g_wifi_state = WIFI_STA_SAMPLE_INIT;
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continue;
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}
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} else if (g_wifi_state == WIFI_STA_SAMPLE_CONNECT_DONE) {
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PRINT("%s::DHCP start.\r\n", WIFI_STA_SAMPLE_LOG);
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g_wifi_state = WIFI_STA_SAMPLE_GET_IP;
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netif_p = netifapi_netif_find(ifname);
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if (netif_p == TD_NULL || netifapi_dhcp_start(netif_p) != 0) {
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PRINT("%s::find netif or start DHCP fail, try again !\r\n", WIFI_STA_SAMPLE_LOG);
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g_wifi_state = WIFI_STA_SAMPLE_INIT;
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continue;
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}
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} else if (g_wifi_state == WIFI_STA_SAMPLE_GET_IP) {
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if (example_check_dhcp_status(netif_p, &wait_count) == 0) {
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break;
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}
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wait_count++;
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}
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} while (1);
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return 0;
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}
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int sta_sample_init(void *param)
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{
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param = param;
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/* 注册事件回调 */
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if (wifi_register_event_cb(&wifi_event_cb) != 0) {
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PRINT("%s::wifi_event_cb register fail.\r\n", WIFI_STA_SAMPLE_LOG);
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return -1;
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}
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PRINT("%s::wifi_event_cb register succ.\r\n", WIFI_STA_SAMPLE_LOG);
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/* 等待wifi初始化完成 */
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while (wifi_is_wifi_inited() == 0) {
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(void)osDelay(10); /* 1: 等待100ms后判断状态 */
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}
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PRINT("%s::wifi init succ.\r\n", WIFI_STA_SAMPLE_LOG);
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if (example_sta_function() != 0) {
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PRINT("%s::example_sta_function fail.\r\n", WIFI_STA_SAMPLE_LOG);
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return -1;
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}
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return 0;
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}
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static void sta_sample_entry(void)
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{
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osThreadAttr_t attr;
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attr.name = "sta_sample_task";
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attr.attr_bits = 0U;
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attr.cb_mem = NULL;
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attr.cb_size = 0U;
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attr.stack_mem = NULL;
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attr.stack_size = WIFI_TASK_STACK_SIZE;
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attr.priority = WIFI_TASK_PRIO;
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if (osThreadNew((osThreadFunc_t)sta_sample_init, NULL, &attr) == NULL) {
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PRINT("%s::Create sta_sample_task fail.\r\n", WIFI_STA_SAMPLE_LOG);
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}
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PRINT("%s::Create sta_sample_task succ.\r\n", WIFI_STA_SAMPLE_LOG);
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}
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/* Run the sta_sample_task. */
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app_run(sta_sample_entry);
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