72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
/*
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* WiFi scan
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*
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* Part of esp-open-rtos
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* Copyright (C) 2016 Ruslan V. Uss <unclerus@gmail.com>
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* BSD Licensed as described in the file LICENSE
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*/
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#include <esp/uart.h>
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#include <stdio.h>
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#include <espressif/esp_common.h>
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#include <FreeRTOS.h>
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#include <task.h>
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#include <string.h>
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static const char * const auth_modes [] = {
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[AUTH_OPEN] = "Open",
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[AUTH_WEP] = "WEP",
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[AUTH_WPA_PSK] = "WPA/PSK",
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[AUTH_WPA2_PSK] = "WPA2/PSK",
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[AUTH_WPA_WPA2_PSK] = "WPA/WPA2/PSK"
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};
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static void scan_done_cb(void *arg, sdk_scan_status_t status)
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{
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char ssid[33]; // max SSID length + zero byte
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if (status != SCAN_OK)
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{
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printf("Error: WiFi scan failed\n");
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return;
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}
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struct sdk_bss_info *bss = (struct sdk_bss_info *)arg;
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// first one is invalid
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bss = bss->next.stqe_next;
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printf("\n----------------------------------------------------------------------------------\n");
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printf(" Wi-Fi networks\n");
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printf("----------------------------------------------------------------------------------\n");
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while (NULL != bss)
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{
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size_t len = strlen((const char *)bss->ssid);
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memcpy(ssid, bss->ssid, len);
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ssid[len] = 0;
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printf("%32.32s (" MACSTR ") RSSI: %02d, security: %s\n", ssid,
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MAC2STR(bss->bssid), bss->rssi, auth_modes[bss->authmode]);
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bss = bss->next.stqe_next;
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}
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}
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static void scan_task(void *arg)
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{
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while (true)
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{
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sdk_wifi_station_scan(NULL, scan_done_cb);
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vTaskDelay(5000 / portTICK_PERIOD_MS);
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}
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}
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void user_init()
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{
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uart_set_baud(0, 115200);
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printf("SDK version:%s\n\n", sdk_system_get_sdk_version());
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// We can scan only in station mode
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sdk_wifi_set_opmode(STATION_MODE);
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xTaskCreate(scan_task, "scan", 512, NULL, 2, NULL);
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}
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