Update examples

Author: me-no-dev

libraries/ESP32/examples/AnalogOut/ledcFrequency/ledcFrequency.ino

@@ -9,6 +9,7 @@
  */
 
 #include "soc/soc_caps.h"
+#include <string>
 
 #define PIN 2
 

libraries/ESP32/examples/Time/SimpleTime/SimpleTime.ino

@@ -1,6 +1,6 @@
 #include <WiFi.h>
 #include "time.h"
-#include "sntp.h"
+#include "esp_sntp.h"
 
 const char* ssid       = "YOUR_SSID";
 const char* password   = "YOUR_PASS";
@@ -43,8 +43,8 @@ void setup()
    * otherwise SNTP option 42 would be rejected by default.
    * NOTE: configTime() function call if made AFTER DHCP-client run
    * will OVERRIDE aquired NTP server address
-   */
-  sntp_servermode_dhcp(1);    // (optional)
+   */ 
+  esp_sntp_servermode_dhcp(1);// (optional)
 
   /**
    * This will set configured ntp servers and constant TimeZone/daylightOffset

libraries/Insights/examples/DiagnosticsSmokeTest/DiagnosticsSmokeTest.ino

@@ -2,6 +2,7 @@
 #include "WiFi.h"
 #include "inttypes.h"
 #include "esp_err.h"
+#include "esp_random.h"
 
 const char insights_auth_key[] = "<ENTER YOUR AUTH KEY>";