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esp8266,esp32: Include hidden networks in WLAN.scan results. 

Addresses issues #2697 and #5329.

Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George 2021-08-03 22:46:24 +10:00
parent bfc8e88ce1
commit 8616129f2e
3 changed files with 6 additions and 2 deletions
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2
docs/library/network.WLAN.rst
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@ -46,6 +46,8 @@ Methods
.. method:: WLAN.scan()
Scan for the available wireless networks.
Hidden networks -- where the SSID is not broadcast -- will also be scanned
if the WLAN interface allows it.
Scanning is only possible on STA interface. Returns list of tuples with
the information about WiFi access points:

2
ports/esp32/modnetwork.c
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@ -466,7 +466,7 @@ STATIC mp_obj_t esp_scan(mp_obj_t self_in) {
mp_obj_t list = mp_obj_new_list(0, NULL);
wifi_scan_config_t config = { 0 };
// XXX how do we scan hidden APs (and if we can scan them, are they really hidden?)
config.show_hidden = true;
MP_THREAD_GIL_EXIT();
esp_err_t status = esp_wifi_scan_start(&config, 1);
MP_THREAD_GIL_ENTER();

4
ports/esp8266/modnetwork.c
View File

@ -233,7 +233,9 @@ STATIC mp_obj_t esp_scan(mp_obj_t self_in) {
}
mp_obj_t list = mp_obj_new_list(0, NULL);
esp_scan_list = &list;
wifi_station_scan(NULL, (scan_done_cb_t)esp_scan_cb);
struct scan_config config = {0};
config.show_hidden = 1;
wifi_station_scan(&config, (scan_done_cb_t)esp_scan_cb);
while (esp_scan_list != NULL) {
// our esp_scan_cb is called via ets_loop_iter so it's safe to set the
// esp_scan_list variable to NULL without disabling interrupts