Add support for newer Ethera devices

README.md

@@ -4,6 +4,7 @@ An open source alternative for the Panasonic wi-fi adapter that works locally wi
 
 # Features
 
+* NEW: Support Ethera generation ACs
 * Control your AC locally via Home Assistant, MQTT or directly
 * Instantly control the AC without any delay like in the Comfort Cloud app
 * Receive live reports and state from the AC

components/panasonic_ac/esppac.h

@@ -13,8 +13,8 @@ namespace panasonic_ac {
 
 static const char *const VERSION = "2.4.0";
 
-static const uint8_t BUFFER_SIZE = 128;  // The maximum size of a single packet (both receive and transmit)
-static const uint8_t READ_TIMEOUT = 20;  // The maximum time to wait before considering a packet complete
+static const uint8_t BUFFER_SIZE = 240;  // The maximum size of a single packet (both receive and transmit)
+static const uint8_t READ_TIMEOUT = 240;  // The maximum time to wait before considering a packet complete
 
 static const uint8_t MIN_TEMPERATURE = 16;     // Minimum temperature as reported by Panasonic app
 static const uint8_t MAX_TEMPERATURE = 30;     // Maximum temperature as supported by Panasonic app

components/panasonic_ac/esppac_wlan.cpp

@@ -594,6 +594,10 @@ void PanasonicACWLAN::handle_handshake_packet() {
   {
     ESP_LOGD(TAG, "Answering handshake [12/16]");
     send_command(CMD_HANDSHAKE_13, sizeof(CMD_HANDSHAKE_13));
+  } else if (this->rx_buffer_[14] == 0x83 && this->rx_buffer_[15] == 0x5A)  // Ethera generation devices handshake failure
+  {
+    ESP_LOGD(TAG, "Received 83 5A packet, Initialization failed, restarting init");
+    this->state_ = ACState::Initializing;  // Restart Initialization, otherwise hangs here on ethera. Likely to succeed on 2nd attempt.
   } else if (this->rx_buffer_[2] == 0x10 && this->rx_buffer_[3] == 0x88)  // Answer for handshake 13
   {
     // Ignore
@@ -646,6 +650,10 @@ void PanasonicACWLAN::send_set_command() {
     packet[12 + (i * 4) + 3] =
         0x00;  // Unknown, either 0x00 or 0x01 or 0x02; overwritten by checksum on last key value pair
   }
+
+  if (packet[12] == 0x31) {
+  packet[11] = 0x02;
+  }
 
   send_packet(packet, CommandType::Normal);
   this->set_queue_index_ = 0;

components/panasonic_ac/esppac_wlan.h

@@ -9,11 +9,11 @@ namespace WLAN {
 static const uint8_t HEADER = 0x5A;  // The header of the protocol, every packet starts with this
 
 static const int INIT_TIMEOUT = 10000;       // Time to wait before initializing after boot
-static const int INIT_END_TIMEOUT = 10000;   // Time to wait for last handshake packet
+static const int INIT_END_TIMEOUT = 20000;   // Time to wait for last handshake packet
 static const int FIRST_POLL_TIMEOUT = 650;   // Time to wait before requesting the first poll
 static const int POLL_INTERVAL = 30000;      // The interval at which to poll the AC
 static const int RESPONSE_TIMEOUT = 600;     // The timeout after which we expect a response to our last command
-static const int INIT_FAIL_TIMEOUT = 30000;  // The timeout after which the initialization is considered failed
+static const int INIT_FAIL_TIMEOUT = 60000;  // The timeout after which the initialization is considered failed
 
 enum class ACState {
   Initializing,     // Before first handshake packet is sent