WiFi scan example (#265)

This commit is contained in:
Ruslan V. Uss 2016-11-05 16:19:36 +06:00 committed by sheinz
parent 99628cf314
commit dda384f3a1
2 changed files with 76 additions and 0 deletions

View file

@ -0,0 +1,4 @@
PROGRAM = wifi_scan
#ESPBAUD = 460800
include ../../common.mk

72
examples/wifi_scan/main.c Normal file
View file

@ -0,0 +1,72 @@
/*
* WiFi scan
*
* Part of esp-open-rtos
* Copyright (C) 2016 Ruslan V. Uss <unclerus@gmail.com>
* BSD Licensed as described in the file LICENSE
*/
#include <esp/uart.h>
#include <stdio.h>
#include <espressif/esp_common.h>
#include <FreeRTOS.h>
#include <task.h>
#include <string.h>
static const char * const auth_modes [] = {
[AUTH_OPEN] = "Open",
[AUTH_WEP] = "WEP",
[AUTH_WPA_PSK] = "WPA/PSK",
[AUTH_WPA2_PSK] = "WPA2/PSK",
[AUTH_WPA_WPA2_PSK] = "WPA/WPA2/PSK"
};
static void scan_done_cb(void *arg, sdk_scan_status_t status)
{
char ssid[33]; // max SSID length + zero byte
if (status != SCAN_OK)
{
printf("Error: WiFi scan failed\n");
return;
}
struct sdk_bss_info *bss = (struct sdk_bss_info *)arg;
// first one is invalid
bss = bss->next.stqe_next;
printf("\n----------------------------------------------------------------------------------\n");
printf(" Wi-Fi networks\n");
printf("----------------------------------------------------------------------------------\n");
while (NULL != bss)
{
size_t len = strlen((const char *)bss->ssid);
memcpy(ssid, bss->ssid, len);
ssid[len] = 0;
printf("%32s (" MACSTR ") RSSI: %02d, security: %s\n", ssid,
MAC2STR(bss->bssid), bss->rssi, auth_modes[bss->authmode]);
bss = bss->next.stqe_next;
}
}
static void scan_task(void *arg)
{
while (true)
{
sdk_wifi_station_scan(NULL, scan_done_cb);
vTaskDelay(5000 / portTICK_PERIOD_MS);
}
}
void user_init()
{
uart_set_baud(0, 115200);
printf("SDK version:%s\n\n", sdk_system_get_sdk_version());
// We can scan only in station mode
sdk_wifi_set_opmode(STATION_MODE);
xTaskCreate(scan_task, "scan", 512, NULL, 2, NULL);
}