Fix compiler warnings

Author: budulinek

arduino-altherma-controller/03-P1P2.ino

@@ -10,7 +10,7 @@ static errorbuf_t EB[RB_SIZE];
 /**************************************************************************/
 void recvBus() {
   while (P1P2Serial.packetavailable()) {
-    uint16_t delta;
+    uint16_t delta = 0;
     errorbuf_t readError = 0;
     uint16_t nread = P1P2Serial.readpacket(RB, delta, EB, RB_SIZE, CRC_GEN, CRC_FEED);
     if (nread > RB_SIZE) {
@@ -192,7 +192,7 @@ void processWrite(uint16_t n) {
 
   // Write command from queue
   if (cmdLen && RB[2] == cmdType) {  // second byte in queue is packet type, compare to received packet type
-    if (2 + cmdLen <= n) {           // check if param size in queue is not larger than space available in packet
+    if ((cmdLen + 2U) <= n) {        // check if param size in queue is not larger than space available in packet
       if (data.eepromDaikin.today < data.config.writeQuota) {
         for (byte i = 0; i < cmdLen; i++) {
           WB[i + 2] = cmdQueue[i + 1];  // skip the first byte in the queue (cmdLen)
@@ -228,7 +228,7 @@ void processWrite(uint16_t n) {
             WB[0] = 0x00;
             WB[1] = 0x00;
             n = cmdLen + 2;
-            if (2 + cmdLen <= sizeof(WB)) {  // check if size in queue is not larger than space available in packet
+            if (n <= sizeof(WB)) {  // check if size in queue is not larger than space available in packet
               for (byte i = 0; i < (cmdLen - 1); i++) {
                 WB[i + 2] = cmdQueue[i + 1];  // skip the first byte in the queue (cmdLen)
               }

arduino-altherma-controller/advanced_settings.h

@@ -8,6 +8,10 @@
 
 // #define ENABLE_DHCP  // Enable DHCP (Auto IP settings), consumes a lot of FLASH memory
 
+#if defined(ARDUINO_AVR_MEGA) || defined(ARDUINO_AVR_MEGA2560)
+#define ENABLE_EXTENDED_WEBUI
+#define ENABLE_DHCP
+#endif
 
 /****** DEFAULT CONFIGURATION ******/
 /*

arduino-altherma-controller/arduino-altherma-controller.ino

@@ -11,7 +11,7 @@
   v3.0 2024-02-02 Function comments. Remove "Disabled" Controller mode (only Manual; Auto),
                   improved automatic connection to the P1P2 bus, connect to any peripheral address
                   between 0xF0 to 0xFF (depends on Altherma model), show other controllers and available addresses.
-  v4.0 2025-XX-XX CSS improvement, code optimization (with some help from ChatGPT), simplify P1P2 Status page,
+  v4.0 2025-03-09 CSS improvement, code optimization (with some help from ChatGPT), simplify P1P2 Status page,
                   target temp. hysteresis in decimals, fix 404 error page, bugfix 0x30 packet,
                   more virtual outputs in Loxone Config, rename some inputs in Loxone Config
 */
@@ -33,7 +33,6 @@ const byte VERSION[] = { 4, 0 };
 #include <avr/wdt.h>
 #include <util/atomic.h>
 
-
 enum first_last_t : byte {
   FIRST,
   LAST
@@ -57,6 +56,8 @@ enum data_packets_t : byte {
   DATA_ONLY_CHANGE          // Only If Payload Changed
 };
 
+#include "advanced_settings.h"
+
 typedef struct {
   byte ip[4];
   byte subnet[4];
@@ -79,8 +80,6 @@ typedef struct {
   byte packetStatus[PACKET_LAST][256 / 8];
 } config_t;
 
-#include "advanced_settings.h"
-
 // default values for the web UI
 const config_t DEFAULT_CONFIG = {
   DEFAULT_STATIC_IP,