Dhcp.cpp - fix reset_DHCP_lease()

Author: JAndrassy

src/Dhcp.cpp

@@ -24,8 +24,11 @@ int DhcpClass::beginWithDHCP(uint8_t *mac, unsigned long timeout, unsigned long
 }
 
 void DhcpClass::reset_DHCP_lease(){
-    // zero out _dhcpSubnetMask, _dhcpGatewayIp, _dhcpLocalIp, _dhcpDhcpServerIp, _dhcpDnsServerIp
-    memset(_dhcpLocalIp, 0, 20);
+  memset(_dhcpLocalIp, 0, 4);
+  memset(_dhcpSubnetMask, 0, 4);
+  memset(_dhcpGatewayIp, 0, 4);
+  memset(_dhcpDhcpServerIp, 0, 4);
+  memset(_dhcpDnsServerIp, 0, 4);
 }
 
 //return:0 on error, 1 if request is sent and response is received

src/Dhcp.h

@@ -141,11 +141,19 @@ class DhcpClass {
   uint32_t _dhcpInitialTransactionId;
   uint32_t _dhcpTransactionId;
   uint8_t  _dhcpMacAddr[6];
+#ifdef __arm__
+  uint8_t  _dhcpLocalIp[4] __attribute__((aligned(4)));
+  uint8_t  _dhcpSubnetMask[4] __attribute__((aligned(4)));
+  uint8_t  _dhcpGatewayIp[4] __attribute__((aligned(4)));
+  uint8_t  _dhcpDhcpServerIp[4] __attribute__((aligned(4)));
+  uint8_t  _dhcpDnsServerIp[4] __attribute__((aligned(4)));
+#else
   uint8_t  _dhcpLocalIp[4];
   uint8_t  _dhcpSubnetMask[4];
   uint8_t  _dhcpGatewayIp[4];
   uint8_t  _dhcpDhcpServerIp[4];
   uint8_t  _dhcpDnsServerIp[4];
+#endif
   uint32_t _dhcpLeaseTime;
   uint32_t _dhcpT1, _dhcpT2;
   signed long _renewInSec;