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/******************************************************************************
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*
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* Copyright(c) 2007 - 2015 Realtek Corporation. All rights reserved.
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*
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*
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******************************************************************************/
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/** @file
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This example demonstrate how to implement wifi fast reconnection
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**/
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#include <platform_opts.h>
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#if defined(CONFIG_EXAMPLE_WLAN_FAST_CONNECT) && CONFIG_EXAMPLE_WLAN_FAST_CONNECT
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#include <wlan_fast_connect/example_wlan_fast_connect.h>
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#include "task.h"
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#include <platform/platform_stdlib.h>
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#include <wifi/wifi_conf.h>
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#include "flash_api.h"
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#include <lwip_netconf.h>
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#ifdef USE_FLASH_EEP
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#include "flash_eep.h"
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#include "feep_config.h"
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#endif
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write_reconnect_ptr p_write_reconnect_ptr;
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extern void fATW0(void *arg);
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extern void fATW1(void *arg);
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extern void fATW2(void *arg);
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extern void fATWC(void *arg);
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/*
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* Usage:
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* wifi connection indication trigger this function to save current
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* wifi profile in flash
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*
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* Condition:
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* CONFIG_EXAMPLE_WLAN_FAST_CONNECT flag is set
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*/
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int wlan_write_reconnect_data_to_flash(u8 *data, uint32_t len)
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{
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if(data == NULL || len < sizeof(struct wlan_fast_reconnect)) return -1;
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DBG_8195A("WiFi connected at start %d ms\n", xTaskGetTickCount());
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#ifdef USE_FLASH_EEP
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flash_write_cfg(data, FEEP_ID_WIFI_CFG, sizeof(struct wlan_fast_reconnect));
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#else
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struct wlan_fast_reconnect read_data = {0};
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flash_t flash;
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if(!data) return -1;
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flash_stream_read(&flash, FAST_RECONNECT_DATA, sizeof(struct wlan_fast_reconnect), (u8 *) &read_data);
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//wirte it to flash if different content: SSID, Passphrase, Channel, Security type
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if(memcmp(data, (u8 *) &read_data, sizeof(struct wlan_fast_reconnect)) != 0) {
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DBG_8195A(" %s():not the same ssid/passphrase/channel, write new profile to flash\n", __func__);
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flash_erase_sector(&flash, FAST_RECONNECT_DATA);
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flash_stream_write(&flash, FAST_RECONNECT_DATA, len, (uint8_t *) data);
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}
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#endif
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return 0;
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}
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/*
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* Usage:
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* After wifi init done, waln driver call this function to check whether
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* auto-connect is required.
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*
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* This function read previous saved wlan profile in flash and execute connection.
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*
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* Condition:
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* CONFIG_EXAMPLE_WLAN_FAST_CONNECT flag is set
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*/
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//scan_buf_arg scan_buf;
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int wlan_init_done_callback()
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{
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flash_t flash;
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struct wlan_fast_reconnect *data;
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uint32_t channel;
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uint8_t pscan_config;
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char key_id[2] = {0};
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// wifi_disable_powersave();
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#if CONFIG_AUTO_RECONNECT
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//setup reconnection flag
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// u8 mode;
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// if(wifi_get_autoreconnect(&mode) > 0 && mode != 1)
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wifi_set_autoreconnect(1); // (not work if lib_wlan_mp.a ?)
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#endif
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DBG_8195A("WiFi Init after %d ms\n", xTaskGetTickCount());
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data = (struct wlan_fast_reconnect *)rtw_zmalloc(sizeof(struct wlan_fast_reconnect));
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if(data) {
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#ifdef USE_FLASH_EEP
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if (flash_read_cfg(data, FEEP_ID_WIFI_CFG, sizeof(struct wlan_fast_reconnect)) == sizeof(struct wlan_fast_reconnect)) {
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#else
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flash_stream_read(&flash, FAST_RECONNECT_DATA, sizeof(struct wlan_fast_reconnect), (uint8_t *)data);
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if(*((uint32_t *) data) != ~0x0) {
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#endif
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#if 1 // not use AT
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#if 0
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//set partial scan for entering to listen beacon quickly
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channel = data->channel & 0xFF;
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pscan_config = PSCAN_ENABLE |PSCAN_FAST_SURVEY; // PSCAN_SIMPLE_CONFIG |
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if(wifi_set_pscan_chan((uint8_t *)&channel, &pscan_config, 1) < 0)
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printf("Wifi set partial scan channel fail!\n");
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// rtw_network_info_t *wifi;
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// SC_connect_to_candidate_AP
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// SC_parse_scan_result_and_connect();
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if (wifi_connect(data->psk_essid, data->security_type, data->psk_passphrase, strlen(data->psk_essid), strlen(data->psk_passphrase), RTW_SECURITY_OPEN, NULL) == RTW_SUCCESS) {
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#else
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//set partial scan for entering to listen beacon quickly
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channel = data->channel & 0xFF;
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pscan_config = PSCAN_ENABLE |PSCAN_FAST_SURVEY; // PSCAN_SIMPLE_CONFIG |
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if(wifi_set_pscan_chan((uint8_t *)&channel, &pscan_config, 1) < 0)
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printf("Wifi set partial scan channel fail!\n");
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// channel = data->channel & 0xFF;
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wifi_set_channel(1); //channel);
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// wifi_set_channel_plan(channel);
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// pscan_config = PSCAN_ENABLE | PSCAN_FAST_SURVEY; // PSCAN_SIMPLE_CONFIG |
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// wifi_set_pscan_chan((uint8_t *)&channel, &pscan_config, 1);
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// DiagPrintf("\nScan end at start %d ms.\n", xTaskGetTickCount());
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// u8 bssid[ETH_ALEN] = { 0x1a,0xfe,0x34,0x99,0xad,0x1d };
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u8 bssid[ETH_ALEN] = { 0xbc,0xae,0xc5,0xeb,0x09,0x90 };
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// if (wifi_connect(data->psk_essid, data->security_type, data->psk_passphrase, strlen(data->psk_essid), strlen(data->psk_passphrase), RTW_SECURITY_OPEN, NULL) == RTW_SUCCESS) {
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if (wifi_connect_bssid(bssid, data->psk_essid, data->security_type, data->psk_passphrase, ETH_ALEN, strlen(data->psk_essid), strlen(data->psk_passphrase), data->channel>>28, NULL) == RTW_SUCCESS) {
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#endif
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// DBG_8195A("WiFi connected at start %dms\n", xTaskGetTickCount());
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#if CONFIG_LWIP_LAYER
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#ifdef USE_FLASH_EEP
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dhcp_cfg *p = (dhcp_cfg *)&data;
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p->mode = 3;
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extern struct netif xnetif[NET_IF_NUM];
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struct netif * pnetif = &xnetif[0];
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if(flash_read_cfg(p, FEEP_ID_DHCP_CFG, sizeof(dhcp_cfg)) > 1) {
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rtl_printf("Read dhcp_config: mode = %d, ip:%p, msk:%p, gw:%p\n", p->mode, p->ip, p->mask, p->gw);
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if(p->mode == 2) {
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netif_set_addr(pnetif, (ip_addr_t *)&p->ip, (ip_addr_t *)&p->mask, (ip_addr_t *)&p->gw);
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dhcps_init(pnetif);
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}
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else if(p->mode) LwIP_DHCP(0, DHCP_START);
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}
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else LwIP_DHCP(0, DHCP_START);
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if(p->mode == 3 && pnetif->ip_addr.addr != 0) {
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p->mode = 2;
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p->ip = pnetif->ip_addr.addr;
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p->gw = pnetif->gw.addr;
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p->mask = pnetif->netmask.addr;
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flash_write_cfg(p, FEEP_ID_DHCP_CFG, sizeof(dhcp_cfg));
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rtl_printf("Write dhcp_config: mode = %d, ip:%p, msk:%p, gw:%p\n", p->mode, p->ip, p->mask, p->gw);
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}
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#else
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LwIP_DHCP(0, DHCP_START);
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#endif //#if USE_FLASH_EEP
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#endif //#if CONFIG_LWIP_LAYER
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#if CONFIG_WLAN_CONNECT_CB
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connect_start();
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#endif
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}
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#else
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// flash_read_cfg(psk_essid, 0x5731, sizeof(psk_essid));
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memcpy(psk_essid, data->psk_essid, sizeof(data->psk_essid));
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// flash_read_cfg(psk_passphrase, 0x5732, sizeof(psk_passphrase));
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memcpy(psk_passphrase, data->psk_passphrase, sizeof(data->psk_passphrase));
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// flash_read_cfg(wpa_global_PSK, 0x5733, sizeof(wpa_global_PSK));
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memcpy(wpa_global_PSK, data->wpa_global_PSK, sizeof(data->wpa_global_PSK));
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//set partial scan for entering to listen beacon quickly
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pscan_config = PSCAN_ENABLE | PSCAN_FAST_SURVEY;
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channel = data->channel & 0xFF;
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wifi_set_pscan_chan((uint8_t *)&channel, &pscan_config, 1);
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//set wifi connect
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switch(data->security_type){
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case RTW_SECURITY_OPEN:
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fATW0((char*)psk_essid);
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break;
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case RTW_SECURITY_WEP_PSK:
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fATW0((char*)psk_essid);
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fATW1((char*)psk_passphrase);
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sprintf(key_id,"%d",(char) (data->channel>>28));
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fATW2(key_id);
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break;
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case RTW_SECURITY_WPA_TKIP_PSK:
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case RTW_SECURITY_WPA2_AES_PSK:
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fATW0((char*)psk_essid);
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fATW1((char*)psk_passphrase);
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break;
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default:
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break;
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}
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fATWC(NULL);
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#endif // use AT
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}
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rtw_mfree(data);
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}
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return 0;
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}
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void example_wlan_fast_connect()
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{
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// Call back from wlan driver after wlan init done
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p_wlan_init_done_callback = wlan_init_done_callback;
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// Call back from application layer after wifi_connection success
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p_write_reconnect_ptr = wlan_write_reconnect_data_to_flash;
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}
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#endif // defined(CONFIG_EXAMPLE_WLAN_FAST_CONNECT) && CONFIG_EXAMPLE_WLAN_FAST_CONNECT
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#ifndef __EXAMPLE_FAST_RECONNECTION_H__
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#define __EXAMPLE_FAST_RECONNECTION_H__
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/******************************************************************************
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*
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* Copyright(c) 2007 - 2015 Realtek Corporation. All rights reserved.
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*
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*
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******************************************************************************/
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#include "FreeRTOS.h"
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#include <autoconf.h>
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#include "main.h"
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#define IW_PASSPHRASE_MAX_SIZE 64
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//#define FAST_RECONNECT_DATA (0x80000 - 0x1000)
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#define NDIS_802_11_LENGTH_SSID 32
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#define A_SHA_DIGEST_LEN 20
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struct wlan_fast_reconnect {
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unsigned char psk_essid[NDIS_802_11_LENGTH_SSID + 4];
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unsigned char psk_passphrase[IW_PASSPHRASE_MAX_SIZE + 1];
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unsigned char wpa_global_PSK[A_SHA_DIGEST_LEN * 2];
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uint32_t channel;
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uint32_t security_type;
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#if ATCMD_VER == ATVER_2
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uint8_t enable;
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#endif
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};
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typedef int (*wlan_init_done_ptr)(void);
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typedef int (*write_reconnect_ptr)(uint8_t *data, uint32_t len);
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//Variable
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extern unsigned char psk_essid[NET_IF_NUM][NDIS_802_11_LENGTH_SSID+4];
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extern unsigned char psk_passphrase[NET_IF_NUM][IW_PASSPHRASE_MAX_SIZE + 1];
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extern unsigned char wpa_global_PSK[NET_IF_NUM][A_SHA_DIGEST_LEN * 2];
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extern unsigned char psk_passphrase64[IW_PASSPHRASE_MAX_SIZE + 1];
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//Function
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extern wlan_init_done_ptr p_wlan_init_done_callback;
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extern write_reconnect_ptr p_write_reconnect_ptr;
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void example_wlan_fast_connect(void);
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#endif //#ifndef __EXAMPLE_FAST_RECONNECTION_H__
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