defined tmp utils library

Author: andreagilardoni

libraries/lwIpWrapper/src/utils.h

@@ -0,0 +1,84 @@
+#pragma once
+#include <Arduino.h>
+#include "lwip/include/lwip/ip_addr.h"
+
+inline ip_addr_t fromArduinoIP(const IPAddress& ip) {
+#if LWIP_IPV4
+    ip_addr_t res;
+    if(ip.type() == arduino::IPv4) {
+        if(ip == INADDR_NONE) {
+            ip_addr_copy(res, *IP4_ADDR_ANY);
+        } else {
+            IP_ADDR4(&res, ip[0], ip[1], ip[2], ip[3]);
+        }
+    }
+#endif // LWIP_IPV4
+#if LWIP_IPV4 && LWIP_IPV6
+    else
+#endif // LWIP_IPV4 && LWIP_IPV6
+#if LWIP_IPV6 // TODO change the setting and try ipv6: This is currently set to 0
+    if(ip.type() == arduino::IPv6) {
+        if(ip == INADDR_NONE) {
+            // ip_addr_copy(res, *IP6_ADDR_ANY);
+            // FIXME implement this
+        } else {
+            // FIXME implement this, it could be useful to have a function in the IPAddress class to help this out
+        }
+    }
+#endif // LWIP_IPV6
+    return res;
+}
+
+inline IPAddress toArduinoIP(const ip_addr_t* ip) {
+    if(ip == nullptr) {
+        return INADDR_NONE;
+    }
+
+#if LWIP_IPV4
+    if(IP_IS_V4(ip)) {
+        if(ip_addr_isany_val(*ip)) {
+            return INADDR_NONE;
+        } else {
+            return IPAddress(arduino::IPv4, (uint8_t*)&ip_2_ip4(ip)->addr);
+        }
+    }
+#endif // LWIP_IPV4
+
+#if LWIP_IPV6 // TODO change the setting and try ipv6: This is currently set to 0
+    if(IP_IS_V6(ip)) {
+        if(ip_addr_isany_val(*ip)) {
+            return IN6ADDR_ANY;
+        } else {
+            return IPAddress(arduino::IPv6, (uint8_t*)ip_2_ip6(ip)->addr);
+        }
+    }
+#endif
+
+#if LWIP_IPV4 && LWIP_IPV6
+    if(IP_IS_ANY_TYPE_VAL(ip)) {
+        // FIXME understand what this means
+    }
+#endif
+
+    return INADDR_NONE;
+}
+
+
+namespace arduino {
+    // TODO leverage on RAII
+    inline volatile uint32_t lock_counter;
+    inline void lock() {
+        __disable_irq();
+        lock_counter++; // This action breaks everything
+    }
+
+    inline void unlock() {
+        if(lock_counter > 0) {
+            lock_counter--;
+        }
+
+        if(lock_counter == 0) {
+            __enable_irq(); // this could be called multiple times if the calls are not setup properly
+        }
+    }
+}