Merge pull request itead#68 from tobiasschaber/feature/enableDHCP

added function to enable or disable DHCP usage

Author: 神农民

ESP8266.cpp

@@ -147,6 +147,11 @@ bool ESP8266::joinAP(String ssid, String pwd)
     return sATCWJAP(ssid, pwd);
 }
 
+bool ESP8266::enableClientDHCP(uint8_t mode, boolean enabled)
+{
+    return sATCWDHCP(mode, enabled);
+}
+
 bool ESP8266::leaveAP(void)
 {
     return eATCWQAP();
@@ -533,6 +538,28 @@ bool ESP8266::sATCWJAP(String ssid, String pwd)
     return false;
 }
 
+bool ESP8266::sATCWDHCP(uint8_t mode, boolean enabled)
+{
+	String strEn = "0";
+	if (enabled) {
+		strEn = "1";
+	}
+	
+	
+    String data;
+    rx_empty();
+    m_puart->print("AT+CWDHCP=");
+    m_puart->print(strEn);
+    m_puart->print(",");
+    m_puart->println(mode);
+    
+    data = recvString("OK", "FAIL", 10000);
+    if (data.indexOf("OK") != -1) {
+        return true;
+    }
+    return false;
+}
+
 bool ESP8266::eATCWLAP(String &list)
 {
     String data;

ESP8266.h

@@ -132,6 +132,17 @@ class ESP8266 {
      */
     bool joinAP(String ssid, String pwd);
 
+    
+    /**
+     * Enable DHCP for client mode. 
+     *
+     * @param mode - server mode (0=soft AP, 1=station, 2=both
+     * @param enabled - true if dhcp should be enabled, otherwise false
+     * 
+     * @note This method will enable DHCP but only for client mode!
+     */
+    bool enableClientDHCP(uint8_t mode, boolean enabled);
+    
     /**
      * Leave AP joined before. 
      *
@@ -435,6 +446,7 @@ class ESP8266 {
     bool qATCWMODE(uint8_t *mode);
     bool sATCWMODE(uint8_t mode);
     bool sATCWJAP(String ssid, String pwd);
+    bool sATCWDHCP(uint8_t mode, boolean enabled);
     bool eATCWLAP(String &list);
     bool eATCWQAP(void);
     bool sATCWSAP(String ssid, String pwd, uint8_t chl, uint8_t ecn);