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Refactor WiFi scan example (#7655)

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Erriez 2020-10-27 11:20:07 +01:00 committed by GitHub
parent c65626622a
commit 95de525af9
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1 changed files with 38 additions and 24 deletions
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62
libraries/ESP8266WiFi/examples/WiFiScan/WiFiScan.ino
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@ -3,43 +3,57 @@
The API is almost the same as with the WiFi Shield library, The API is almost the same as with the WiFi Shield library,
the most obvious difference being the different file you need to include: the most obvious difference being the different file you need to include:
*/ */
#include "ESP8266WiFi.h"
#include <ESP8266WiFi.h>
void setup() { void setup() {
Serial.begin(115200); Serial.begin(115200);
Serial.println(F("\nESP8266 WiFi scan example"));
// Set WiFi to station mode and disconnect from an AP if it was previously connected // Set WiFi to station mode
WiFi.mode(WIFI_STA); WiFi.mode(WIFI_STA);
// Disconnect from an AP if it was previously connected
WiFi.disconnect(); WiFi.disconnect();
delay(100); delay(100);
Serial.println("Setup done");
} }
void loop() { void loop() {
Serial.println("scan start"); String ssid;
int32_t rssi;
uint8_t encryptionType;
uint8_t* bssid;
int32_t channel;
bool hidden;
int scanResult;
// WiFi.scanNetworks will return the number of networks found Serial.println(F("Starting WiFi scan..."));
int n = WiFi.scanNetworks();
Serial.println("scan done"); scanResult = WiFi.scanNetworks(/*async=*/false, /*hidden=*/true);
if (n == 0) {
Serial.println("no networks found"); if (scanResult == 0) {
Serial.println(F("No networks found"));
} else if (scanResult > 0) {
Serial.printf(PSTR("%d networks found:\n"), scanResult);
// Print unsorted scan results
for (int8_t i = 0; i < scanResult; i++) {
WiFi.getNetworkInfo(i, ssid, encryptionType, rssi, bssid, channel, hidden);
Serial.printf(PSTR(" %02d: [CH %02d] [%02X:%02X:%02X:%02X:%02X:%02X] %ddBm %c %c %s\n"),
i,
channel,
bssid[0], bssid[1], bssid[2],
bssid[3], bssid[4], bssid[5],
rssi,
(encryptionType == ENC_TYPE_NONE) ? ' ' : '*',
hidden ? 'H' : 'V',
ssid.c_str());
delay(0);
}
} else { } else {
Serial.print(n); Serial.printf(PSTR("WiFi scan error %d"), scanResult);
Serial.println(" networks found");
for (int i = 0; i < n; ++i) {
// Print SSID and RSSI for each network found
Serial.print(i + 1);
Serial.print(": ");
Serial.print(WiFi.SSID(i));
Serial.print(" (");
Serial.print(WiFi.RSSI(i));
Serial.print(")");
Serial.println((WiFi.encryptionType(i) == ENC_TYPE_NONE) ? " " : "*");
delay(10);
} }
}
Serial.println("");
// Wait a bit before scanning again // Wait a bit before scanning again
delay(5000); delay(5000);