mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
c1d5eafd16
Update wifi lib with below features - 1. ASAP mode for both Initiator and Responder 2. Offchannel FTM while connected to AP (ASAP only) 3. Support up to 3 Initiators simultaneously 4. Session termination, failure support etc 5. Mem-zero AP scan buffer in get_records API
619 lines
19 KiB
C
619 lines
19 KiB
C
/* Wi-Fi FTM Example
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This example code is in the Public Domain (or CC0 licensed, at your option.)
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Unless required by applicable law or agreed to in writing, this
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software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied.
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*/
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#include <errno.h>
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#include <string.h>
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#include <stdio.h>
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#include <string.h>
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#include "nvs_flash.h"
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#include "cmd_system.h"
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#include "argtable3/argtable3.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/event_groups.h"
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#include "esp_event.h"
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#include "esp_log.h"
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#include "esp_err.h"
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#include "esp_wifi.h"
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#include "esp_console.h"
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typedef struct {
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struct arg_str *ssid;
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struct arg_str *password;
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struct arg_end *end;
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} wifi_args_t;
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typedef struct {
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struct arg_str *ssid;
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struct arg_end *end;
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} wifi_scan_arg_t;
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typedef struct {
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/* FTM Initiator */
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struct arg_lit *initiator;
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struct arg_int *frm_count;
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struct arg_int *burst_period;
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struct arg_str *ssid;
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/* FTM Responder */
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struct arg_lit *responder;
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struct arg_lit *enable;
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struct arg_lit *disable;
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struct arg_int *offset;
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struct arg_end *end;
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} wifi_ftm_args_t;
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static wifi_args_t sta_args;
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static wifi_args_t ap_args;
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static wifi_scan_arg_t scan_args;
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static wifi_ftm_args_t ftm_args;
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wifi_config_t g_ap_config = {
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.ap.max_connection = 4,
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.ap.authmode = WIFI_AUTH_WPA2_PSK,
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.ap.ftm_responder = true
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};
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static bool s_reconnect = true;
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static const char *TAG_STA = "ftm_station";
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static const char *TAG_AP = "ftm_ap";
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static EventGroupHandle_t wifi_event_group;
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const int CONNECTED_BIT = BIT0;
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const int DISCONNECTED_BIT = BIT1;
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static EventGroupHandle_t ftm_event_group;
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const int FTM_REPORT_BIT = BIT0;
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const int FTM_FAILURE_BIT = BIT1;
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wifi_ftm_report_entry_t *g_ftm_report;
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uint8_t g_ftm_report_num_entries;
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static uint32_t g_rtt_est, g_dist_est;
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bool g_ap_started;
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const int g_report_lvl =
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#ifdef CONFIG_ESP_FTM_REPORT_SHOW_DIAG
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BIT0 |
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#endif
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#ifdef CONFIG_ESP_FTM_REPORT_SHOW_RTT
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BIT1 |
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#endif
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#ifdef CONFIG_ESP_FTM_REPORT_SHOW_T1T2T3T4
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BIT2 |
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#endif
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#ifdef CONFIG_ESP_FTM_REPORT_SHOW_RSSI
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BIT3 |
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#endif
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0;
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uint16_t g_scan_ap_num;
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wifi_ap_record_t *g_ap_list_buffer;
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static void event_handler(void *arg, esp_event_base_t event_base,
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int32_t event_id, void *event_data)
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{
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if (event_id == WIFI_EVENT_STA_CONNECTED) {
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wifi_event_sta_connected_t *event = (wifi_event_sta_connected_t *)event_data;
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ESP_LOGI(TAG_STA, "Connected to %s (BSSID: "MACSTR", Channel: %d)", event->ssid,
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MAC2STR(event->bssid), event->channel);
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xEventGroupClearBits(wifi_event_group, DISCONNECTED_BIT);
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xEventGroupSetBits(wifi_event_group, CONNECTED_BIT);
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} else if (event_id == WIFI_EVENT_STA_DISCONNECTED) {
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if (s_reconnect) {
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ESP_LOGI(TAG_STA, "sta disconnect, s_reconnect...");
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esp_wifi_connect();
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} else {
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ESP_LOGI(TAG_STA, "sta disconnect");
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}
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xEventGroupClearBits(wifi_event_group, CONNECTED_BIT);
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xEventGroupSetBits(wifi_event_group, DISCONNECTED_BIT);
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} else if (event_id == WIFI_EVENT_FTM_REPORT) {
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wifi_event_ftm_report_t *event = (wifi_event_ftm_report_t *) event_data;
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if (event->status == FTM_STATUS_SUCCESS) {
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g_rtt_est = event->rtt_est;
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g_dist_est = event->dist_est;
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g_ftm_report = event->ftm_report_data;
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g_ftm_report_num_entries = event->ftm_report_num_entries;
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xEventGroupSetBits(ftm_event_group, FTM_REPORT_BIT);
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} else {
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ESP_LOGI(TAG_STA, "FTM procedure with Peer("MACSTR") failed! (Status - %d)",
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MAC2STR(event->peer_mac), event->status);
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xEventGroupSetBits(ftm_event_group, FTM_FAILURE_BIT);
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}
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} else if (event_id == WIFI_EVENT_AP_START) {
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g_ap_started = true;
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} else if (event_id == WIFI_EVENT_AP_STOP) {
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g_ap_started = false;
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}
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}
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static void ftm_process_report(void)
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{
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int i;
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char *log = malloc(200);
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if (!g_report_lvl)
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return;
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if (!log) {
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ESP_LOGE(TAG_STA, "Failed to alloc buffer for FTM report");
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return;
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}
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bzero(log, 200);
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sprintf(log, "%s%s%s%s", g_report_lvl & BIT0 ? " Diag |":"", g_report_lvl & BIT1 ? " RTT |":"",
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g_report_lvl & BIT2 ? " T1 | T2 | T3 | T4 |":"",
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g_report_lvl & BIT3 ? " RSSI |":"");
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ESP_LOGI(TAG_STA, "FTM Report:");
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ESP_LOGI(TAG_STA, "|%s", log);
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for (i = 0; i < g_ftm_report_num_entries; i++) {
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char *log_ptr = log;
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bzero(log, 200);
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if (g_report_lvl & BIT0) {
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log_ptr += sprintf(log_ptr, "%6d|", g_ftm_report[i].dlog_token);
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}
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if (g_report_lvl & BIT1) {
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log_ptr += sprintf(log_ptr, "%7u |", g_ftm_report[i].rtt);
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}
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if (g_report_lvl & BIT2) {
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log_ptr += sprintf(log_ptr, "%14llu |%14llu |%14llu |%14llu |", g_ftm_report[i].t1,
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g_ftm_report[i].t2, g_ftm_report[i].t3, g_ftm_report[i].t4);
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}
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if (g_report_lvl & BIT3) {
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log_ptr += sprintf(log_ptr, "%6d |", g_ftm_report[i].rssi);
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}
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ESP_LOGI(TAG_STA, "|%s", log);
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}
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free(log);
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}
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void initialise_wifi(void)
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{
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esp_log_level_set("wifi", ESP_LOG_WARN);
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static bool initialized = false;
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if (initialized) {
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return;
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}
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ESP_ERROR_CHECK(esp_netif_init());
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wifi_event_group = xEventGroupCreate();
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ftm_event_group = xEventGroupCreate();
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ESP_ERROR_CHECK( esp_event_loop_create_default() );
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wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
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ESP_ERROR_CHECK(esp_wifi_init(&cfg));
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esp_event_handler_instance_t instance_any_id;
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ESP_ERROR_CHECK(esp_event_handler_instance_register(WIFI_EVENT,
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ESP_EVENT_ANY_ID,
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&event_handler,
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NULL,
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&instance_any_id));
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ESP_ERROR_CHECK(esp_wifi_set_storage(WIFI_STORAGE_RAM) );
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ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_NULL) );
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ESP_ERROR_CHECK(esp_wifi_start() );
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initialized = true;
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}
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static bool wifi_cmd_sta_join(const char *ssid, const char *pass)
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{
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int bits = xEventGroupWaitBits(wifi_event_group, CONNECTED_BIT, 0, 1, 0);
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wifi_config_t wifi_config = { 0 };
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strlcpy((char *) wifi_config.sta.ssid, ssid, sizeof(wifi_config.sta.ssid));
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if (pass) {
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strlcpy((char *) wifi_config.sta.password, pass, sizeof(wifi_config.sta.password));
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}
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if (bits & CONNECTED_BIT) {
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s_reconnect = false;
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xEventGroupClearBits(wifi_event_group, CONNECTED_BIT);
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ESP_ERROR_CHECK( esp_wifi_disconnect() );
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xEventGroupWaitBits(wifi_event_group, DISCONNECTED_BIT, 0, 1, portTICK_RATE_MS);
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}
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s_reconnect = true;
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ESP_ERROR_CHECK( esp_wifi_set_mode(WIFI_MODE_STA) );
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ESP_ERROR_CHECK( esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config) );
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ESP_ERROR_CHECK( esp_wifi_connect() );
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xEventGroupWaitBits(wifi_event_group, CONNECTED_BIT, 0, 1, 5000 / portTICK_RATE_MS);
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return true;
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}
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static int wifi_cmd_sta(int argc, char **argv)
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{
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int nerrors = arg_parse(argc, argv, (void **) &sta_args);
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if (nerrors != 0) {
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arg_print_errors(stderr, sta_args.end, argv[0]);
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return 1;
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}
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ESP_LOGI(TAG_STA, "sta connecting to '%s'", sta_args.ssid->sval[0]);
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wifi_cmd_sta_join(sta_args.ssid->sval[0], sta_args.password->sval[0]);
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return 0;
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}
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static bool wifi_perform_scan(const char *ssid, bool internal)
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{
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wifi_scan_config_t scan_config = { 0 };
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scan_config.ssid = (uint8_t *) ssid;
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uint8_t i;
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ESP_ERROR_CHECK( esp_wifi_set_mode(WIFI_MODE_STA) );
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ESP_ERROR_CHECK( esp_wifi_scan_start(&scan_config, true) );
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esp_wifi_scan_get_ap_num(&g_scan_ap_num);
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if (g_scan_ap_num == 0) {
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ESP_LOGI(TAG_STA, "No matching AP found");
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return false;
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}
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if (g_ap_list_buffer) {
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free(g_ap_list_buffer);
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}
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g_ap_list_buffer = malloc(g_scan_ap_num * sizeof(wifi_ap_record_t));
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if (g_ap_list_buffer == NULL) {
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ESP_LOGE(TAG_STA, "Failed to malloc buffer to print scan results");
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return false;
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}
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if (esp_wifi_scan_get_ap_records(&g_scan_ap_num, (wifi_ap_record_t *)g_ap_list_buffer) == ESP_OK) {
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if (!internal) {
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for (i = 0; i < g_scan_ap_num; i++) {
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ESP_LOGI(TAG_STA, "[%s][rssi=%d]""%s", g_ap_list_buffer[i].ssid, g_ap_list_buffer[i].rssi,
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g_ap_list_buffer[i].ftm_responder ? "[FTM Responder]" : "");
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}
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}
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}
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ESP_LOGI(TAG_STA, "sta scan done");
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return true;
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}
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static int wifi_cmd_scan(int argc, char **argv)
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{
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int nerrors = arg_parse(argc, argv, (void **) &scan_args);
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if (nerrors != 0) {
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arg_print_errors(stderr, scan_args.end, argv[0]);
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return 1;
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}
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ESP_LOGI(TAG_STA, "sta start to scan");
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if ( scan_args.ssid->count == 1 ) {
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wifi_perform_scan(scan_args.ssid->sval[0], false);
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} else {
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wifi_perform_scan(NULL, false);
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}
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return 0;
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}
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static bool wifi_cmd_ap_set(const char* ssid, const char* pass)
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{
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s_reconnect = false;
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strlcpy((char*) g_ap_config.ap.ssid, ssid, MAX_SSID_LEN);
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if (pass) {
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if (strlen(pass) != 0 && strlen(pass) < 8) {
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s_reconnect = true;
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ESP_LOGE(TAG_AP, "password less than 8");
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return false;
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}
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strlcpy((char*) g_ap_config.ap.password, pass, MAX_PASSPHRASE_LEN);
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}
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if (strlen(pass) == 0) {
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g_ap_config.ap.authmode = WIFI_AUTH_OPEN;
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}
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ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_AP));
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ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_AP, &g_ap_config));
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return true;
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}
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static int wifi_cmd_ap(int argc, char** argv)
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{
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int nerrors = arg_parse(argc, argv, (void**) &ap_args);
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if (nerrors != 0) {
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arg_print_errors(stderr, ap_args.end, argv[0]);
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return 1;
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}
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wifi_cmd_ap_set(ap_args.ssid->sval[0], ap_args.password->sval[0]);
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ESP_LOGI(TAG_AP, "Starting SoftAP with FTM Responder support, SSID - %s, Password - %s", ap_args.ssid->sval[0], ap_args.password->sval[0]);
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return 0;
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}
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static int wifi_cmd_query(int argc, char **argv)
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{
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wifi_config_t cfg;
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wifi_mode_t mode;
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esp_wifi_get_mode(&mode);
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if (WIFI_MODE_AP == mode) {
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esp_wifi_get_config(WIFI_IF_AP, &cfg);
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ESP_LOGI(TAG_AP, "AP mode, %s %s", cfg.ap.ssid, cfg.ap.password);
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} else if (WIFI_MODE_STA == mode) {
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int bits = xEventGroupWaitBits(wifi_event_group, CONNECTED_BIT, 0, 1, 0);
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if (bits & CONNECTED_BIT) {
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esp_wifi_get_config(WIFI_IF_STA, &cfg);
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ESP_LOGI(TAG_STA, "sta mode, connected %s", cfg.ap.ssid);
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} else {
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ESP_LOGI(TAG_STA, "sta mode, disconnected");
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}
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} else {
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ESP_LOGI(TAG_STA, "NULL mode");
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return 0;
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}
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return 0;
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}
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wifi_ap_record_t *find_ftm_responder_ap(const char *ssid)
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{
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bool retry_scan = false;
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uint8_t i;
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if (!ssid)
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return NULL;
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retry:
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if (!g_ap_list_buffer || (g_scan_ap_num == 0)) {
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ESP_LOGI(TAG_STA, "Scanning for %s", ssid);
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if (false == wifi_perform_scan(ssid, true)) {
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return NULL;
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}
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}
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for (i = 0; i < g_scan_ap_num; i++) {
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if (strcmp((const char *)g_ap_list_buffer[i].ssid, ssid) == 0)
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return &g_ap_list_buffer[i];
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}
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if (!retry_scan) {
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retry_scan = true;
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if (g_ap_list_buffer) {
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free(g_ap_list_buffer);
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g_ap_list_buffer = NULL;
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}
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goto retry;
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}
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ESP_LOGI(TAG_STA, "No matching AP found");
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return NULL;
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}
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static int wifi_cmd_ftm(int argc, char **argv)
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{
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int nerrors = arg_parse(argc, argv, (void **) &ftm_args);
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wifi_ap_record_t *ap_record;
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wifi_ftm_initiator_cfg_t ftmi_cfg = {
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.frm_count = 32,
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.burst_period = 2,
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};
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if (nerrors != 0) {
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arg_print_errors(stderr, ftm_args.end, argv[0]);
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return 0;
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}
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if (ftm_args.initiator->count != 0 && ftm_args.responder->count != 0) {
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ESP_LOGE(TAG_STA, "Invalid FTM cmd argument");
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return 0;
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}
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if (ftm_args.responder->count != 0)
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goto ftm_responder;
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if (ftm_args.ssid->count == 1) {
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ap_record = find_ftm_responder_ap(ftm_args.ssid->sval[0]);
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if (ap_record) {
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memcpy(ftmi_cfg.resp_mac, ap_record->bssid, 6);
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ftmi_cfg.channel = ap_record->primary;
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} else {
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return 0;
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}
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}
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if (ftm_args.frm_count->count != 0) {
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uint8_t count = ftm_args.frm_count->ival[0];
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if (count != 0 && count != 8 && count != 16 &&
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count != 24 && count != 32 && count != 64) {
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ESP_LOGE(TAG_STA, "Invalid Frame Count! Valid options are 0/8/16/24/32/64");
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return 0;
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}
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ftmi_cfg.frm_count = count;
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}
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if (ftm_args.burst_period->count != 0) {
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if (ftm_args.burst_period->ival[0] >= 2 &&
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ftm_args.burst_period->ival[0] < 256) {
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ftmi_cfg.burst_period = ftm_args.burst_period->ival[0];
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} else {
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ESP_LOGE(TAG_STA, "Invalid Burst Period! Valid range is 2-255");
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return 0;
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}
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}
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ESP_LOGI(TAG_STA, "Requesting FTM session with Frm Count - %d, Burst Period - %dmSec (0: No Preference)",
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ftmi_cfg.frm_count, ftmi_cfg.burst_period*100);
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if (ESP_OK != esp_wifi_ftm_initiate_session(&ftmi_cfg)) {
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ESP_LOGE(TAG_STA, "Failed to start FTM session");
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return 0;
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}
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|
|
EventBits_t bits = xEventGroupWaitBits(ftm_event_group, FTM_REPORT_BIT | FTM_FAILURE_BIT,
|
|
pdFALSE, pdFALSE, portMAX_DELAY);
|
|
/* Processing data from FTM session */
|
|
if (bits & FTM_REPORT_BIT) {
|
|
ftm_process_report();
|
|
free(g_ftm_report);
|
|
g_ftm_report = NULL;
|
|
g_ftm_report_num_entries = 0;
|
|
ESP_LOGI(TAG_STA, "Estimated RTT - %d nSec, Estimated Distance - %d.%02d meters",
|
|
g_rtt_est, g_dist_est / 100, g_dist_est % 100);
|
|
xEventGroupClearBits(ftm_event_group, FTM_REPORT_BIT);
|
|
} else {
|
|
/* Failure case */
|
|
}
|
|
|
|
return 0;
|
|
|
|
ftm_responder:
|
|
if (ftm_args.offset->count != 0) {
|
|
int16_t offset_cm = ftm_args.offset->ival[0];
|
|
|
|
esp_wifi_ftm_resp_set_offset(offset_cm);
|
|
}
|
|
|
|
if (ftm_args.enable->count != 0) {
|
|
if (!g_ap_started) {
|
|
ESP_LOGE(TAG_AP, "Start the SoftAP first with 'ap' command");
|
|
return 0;
|
|
}
|
|
g_ap_config.ap.ftm_responder = true;
|
|
ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_AP, &g_ap_config));
|
|
ESP_LOGI(TAG_AP, "Re-starting SoftAP with FTM Responder enabled");
|
|
|
|
return 0;
|
|
}
|
|
|
|
if (ftm_args.disable->count != 0) {
|
|
if (!g_ap_started) {
|
|
ESP_LOGE(TAG_AP, "Start the SoftAP first with 'ap' command");
|
|
return 0;
|
|
}
|
|
g_ap_config.ap.ftm_responder = false;
|
|
ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_AP, &g_ap_config));
|
|
ESP_LOGI(TAG_AP, "Re-starting SoftAP with FTM Responder disabled");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void register_wifi(void)
|
|
{
|
|
sta_args.ssid = arg_str1(NULL, NULL, "<ssid>", "SSID of AP");
|
|
sta_args.password = arg_str0(NULL, NULL, "<pass>", "password of AP");
|
|
sta_args.end = arg_end(2);
|
|
|
|
const esp_console_cmd_t sta_cmd = {
|
|
.command = "sta",
|
|
.help = "WiFi is station mode, join specified soft-AP",
|
|
.hint = NULL,
|
|
.func = &wifi_cmd_sta,
|
|
.argtable = &sta_args
|
|
};
|
|
|
|
ESP_ERROR_CHECK( esp_console_cmd_register(&sta_cmd) );
|
|
|
|
ap_args.ssid = arg_str1(NULL, NULL, "<ssid>", "SSID of AP");
|
|
ap_args.password = arg_str0(NULL, NULL, "<pass>", "password of AP");
|
|
ap_args.end = arg_end(2);
|
|
|
|
const esp_console_cmd_t ap_cmd = {
|
|
.command = "ap",
|
|
.help = "AP mode, configure ssid and password",
|
|
.hint = NULL,
|
|
.func = &wifi_cmd_ap,
|
|
.argtable = &ap_args
|
|
};
|
|
|
|
ESP_ERROR_CHECK( esp_console_cmd_register(&ap_cmd) );
|
|
|
|
scan_args.ssid = arg_str0(NULL, NULL, "<ssid>", "SSID of AP want to be scanned");
|
|
scan_args.end = arg_end(1);
|
|
|
|
const esp_console_cmd_t scan_cmd = {
|
|
.command = "scan",
|
|
.help = "WiFi is station mode, start scan ap",
|
|
.hint = NULL,
|
|
.func = &wifi_cmd_scan,
|
|
.argtable = &scan_args
|
|
};
|
|
|
|
ESP_ERROR_CHECK( esp_console_cmd_register(&scan_cmd) );
|
|
|
|
const esp_console_cmd_t query_cmd = {
|
|
.command = "query",
|
|
.help = "query WiFi info",
|
|
.hint = NULL,
|
|
.func = &wifi_cmd_query,
|
|
};
|
|
ESP_ERROR_CHECK( esp_console_cmd_register(&query_cmd) );
|
|
|
|
/* FTM Initiator commands */
|
|
ftm_args.initiator = arg_lit0("I", "ftm_initiator", "FTM Initiator mode");
|
|
ftm_args.ssid = arg_str0("s", "ssid", "SSID", "SSID of AP");
|
|
ftm_args.frm_count = arg_int0("c", "frm_count", "<0/8/16/24/32/64>", "FTM frames to be exchanged (0: No preference)");
|
|
ftm_args.burst_period = arg_int0("p", "burst_period", "<2-255 (x 100 mSec)>", "Periodicity of FTM bursts in 100's of miliseconds (0: No preference)");
|
|
/* FTM Responder commands */
|
|
ftm_args.responder = arg_lit0("R", "ftm_responder", "FTM Responder mode");
|
|
ftm_args.enable = arg_lit0("e", "enable", "Restart SoftAP with FTM enabled");
|
|
ftm_args.disable = arg_lit0("d", "disable", "Restart SoftAP with FTM disabled");
|
|
ftm_args.offset = arg_int0("o", "offset", "Offset in cm", "T1 offset in cm for FTM Responder");
|
|
ftm_args.end = arg_end(1);
|
|
|
|
const esp_console_cmd_t ftm_cmd = {
|
|
.command = "ftm",
|
|
.help = "FTM command",
|
|
.hint = NULL,
|
|
.func = &wifi_cmd_ftm,
|
|
.argtable = &ftm_args
|
|
};
|
|
|
|
ESP_ERROR_CHECK( esp_console_cmd_register(&ftm_cmd) );
|
|
}
|
|
|
|
void app_main(void)
|
|
{
|
|
esp_err_t ret = nvs_flash_init();
|
|
if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
|
|
ESP_ERROR_CHECK(nvs_flash_erase());
|
|
ret = nvs_flash_init();
|
|
}
|
|
ESP_ERROR_CHECK( ret );
|
|
|
|
initialise_wifi();
|
|
|
|
esp_console_repl_t *repl = NULL;
|
|
esp_console_repl_config_t repl_config = ESP_CONSOLE_REPL_CONFIG_DEFAULT();
|
|
esp_console_dev_uart_config_t uart_config = ESP_CONSOLE_DEV_UART_CONFIG_DEFAULT();
|
|
repl_config.prompt = "ftm>";
|
|
// init console REPL environment
|
|
ESP_ERROR_CHECK(esp_console_new_repl_uart(&uart_config, &repl_config, &repl));
|
|
/* Register commands */
|
|
register_system();
|
|
register_wifi();
|
|
|
|
printf("\n ==========================================================\n");
|
|
printf(" | Steps to test FTM |\n");
|
|
printf(" | |\n");
|
|
printf(" | 1. Use 'help' for detailed information on parameters |\n");
|
|
printf(" | 2. Start SoftAP with command 'ap <SSID> <password>' |\n");
|
|
printf(" | OR |\n");
|
|
printf(" | 2. Use 'scan' command to search for external AP's |\n");
|
|
printf(" | 3. On second device initiate FTM with an AP using |\n");
|
|
printf(" | command 'ftm -I -s <SSID>' |\n");
|
|
printf(" ==========================================================\n\n");
|
|
|
|
// start console REPL
|
|
ESP_ERROR_CHECK(esp_console_start_repl(repl));
|
|
}
|