Added channel, ssid scan (#4636)

* Added channel, ssid scan Overloaded scanNetworks so scan can occur on a single channel and/or for a particular ssid. * Added parameters to scanNetworks channel number and ssid have been added as optional parameters to the orginal scanNetworks()
esp8266 · Apr 13, 2018 · 7820fb7 · 7820fb7
1 parent b08d282
commit 7820fb7
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Showing 2 changed files with 6 additions and 2 deletions.
diff --git a/libraries/ESP8266WiFi/src/ESP8266WiFiScan.cpp b/libraries/ESP8266WiFi/src/ESP8266WiFiScan.cpp
@@ -64,9 +64,11 @@ std::function<void(int)> ESP8266WiFiScanClass::_onComplete;
  * Start scan WiFi networks available
  * @param async         run in async mode
  * @param show_hidden   show hidden networks
+ * @param channel       scan only this channel (0 for all channels)
+ * @param ssid*         scan for only this ssid (NULL for all ssid's)
  * @return Number of discovered networks
  */
-int8_t ESP8266WiFiScanClass::scanNetworks(bool async, bool show_hidden) {
+int8_t ESP8266WiFiScanClass::scanNetworks(bool async, bool show_hidden, uint8 channel, uint8* ssid) {
     if(ESP8266WiFiScanClass::_scanStarted) {
         return WIFI_SCAN_RUNNING;
     }
@@ -84,6 +86,8 @@ int8_t ESP8266WiFiScanClass::scanNetworks(bool async, bool show_hidden) {
 
     struct scan_config config;
     memset(&config, 0, sizeof(config));
+    config.ssid = ssid;
+    config.channel = channel;
     config.show_hidden = show_hidden;
     if(wifi_station_scan(&config, reinterpret_cast<scan_done_cb_t>(&ESP8266WiFiScanClass::_scanDone))) {
         ESP8266WiFiScanClass::_scanComplete = false;

diff --git a/libraries/ESP8266WiFi/src/ESP8266WiFiScan.h b/libraries/ESP8266WiFi/src/ESP8266WiFiScan.h
@@ -34,7 +34,7 @@ class ESP8266WiFiScanClass {
 
     public:
 
-        int8_t scanNetworks(bool async = false, bool show_hidden = false);
+        int8_t scanNetworks(bool async = false, bool show_hidden = false, uint8 channel = 0, uint8* ssid = NULL);
         void scanNetworksAsync(std::function<void(int)> onComplete, bool show_hidden = false);
 
         int8_t scanComplete();