72 lines
2.4 KiB
C
72 lines
2.4 KiB
C
/**
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* Copyright (c) 2022 Raspberry Pi (Trading) Ltd.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <stdio.h>
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#include "pico/stdlib.h"
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#include "pico/cyw43_arch.h"
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static int scan_result(void *env, const cyw43_ev_scan_result_t *result) {
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if (result) {
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printf("ssid: %-32s rssi: %4d chan: %3d mac: %02x:%02x:%02x:%02x:%02x:%02x sec: %u\n",
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result->ssid, result->rssi, result->channel,
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result->bssid[0], result->bssid[1], result->bssid[2], result->bssid[3], result->bssid[4], result->bssid[5],
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result->auth_mode);
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}
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return 0;
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}
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#include "hardware/vreg.h"
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#include "hardware/clocks.h"
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int main() {
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stdio_init_all();
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if (cyw43_arch_init()) {
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printf("failed to initialise\n");
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return 1;
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}
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cyw43_arch_enable_sta_mode();
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absolute_time_t scan_test = nil_time;
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bool scan_in_progress = false;
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while(true) {
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if (absolute_time_diff_us(get_absolute_time(), scan_test) < 0) {
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if (!scan_in_progress) {
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cyw43_wifi_scan_options_t scan_options = {0};
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int err = cyw43_wifi_scan(&cyw43_state, &scan_options, NULL, scan_result);
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if (err == 0) {
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printf("\nPerforming wifi scan\n");
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scan_in_progress = true;
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} else {
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printf("Failed to start scan: %d\n", err);
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scan_test = make_timeout_time_ms(10000); // wait 10s and scan again
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}
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} else if (!cyw43_wifi_scan_active(&cyw43_state)) {
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scan_test = make_timeout_time_ms(10000); // wait 10s and scan again
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scan_in_progress = false;
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}
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}
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// the following #ifdef is only here so this same example can be used in multiple modes;
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// you do not need it in your code
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#if PICO_CYW43_ARCH_POLL
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// if you are using pico_cyw43_arch_poll, then you must poll periodically from your
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// main loop (not from a timer) to check for WiFi driver or lwIP work that needs to be done.
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cyw43_arch_poll();
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sleep_ms(1);
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#else
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// if you are not using pico_cyw43_arch_poll, then WiFI driver and lwIP work
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// is done via interrupt in the background. This sleep is just an example of some (blocking)
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// work you might be doing.
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sleep_ms(1000);
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#endif
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}
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cyw43_arch_deinit();
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return 0;
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}
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