v1.2.0 to support STM32 + LAN8742A

### Releases v1.2.0

1. Add support to **STM32F/L/H/G/WB/MP1 (without TLS/SSL)** using `built-in LAN8742A` Ethernet, such as Nucleo-144, DISCOVERY, etc.
2. Add examples for `STM32`

Author: khoih-prog

src/AsyncMqttClient_Generic.hpp

@@ -49,23 +49,23 @@
 
 #ifdef ESP32
 
-	#if ( ( defined(ESP_ARDUINO_VERSION_MAJOR) && (ESP_ARDUINO_VERSION_MAJOR >= 2) ) && ( ARDUINO_ESP32_GIT_VER != 0x46d5afb1 ) )
-		#define USING_CORE_ESP32_CORE_V200_PLUS      true
-		
-		#if (_ASYNC_MQTT_LOGLEVEL_ > 3)
-		  #warning Using code for ESP32 core v2.0.0+ in AsyncMqttClient_Generic.hpp
-		#endif
-		  
-		#define ASYNC_MQTT_GENERIC_VERSION				(ASYNC_MQTT_GENERIC_SHORT_VERSION " for ESP32 core v2.0.0+")
-
-	#else
-		#if (_ASYNC_MQTT_LOGLEVEL_ > 3)
-		  #warning Using code for ESP32 core v1.0.6- in AsyncMqttClient_Generic.hpp
-		#endif
-		
-		#define ASYNC_MQTT_GENERIC_VERSION				(ASYNC_MQTT_GENERIC_SHORT_VERSION " for ESP32 core v1.0.6-")
-		
-	#endif
+  #if ( ( defined(ESP_ARDUINO_VERSION_MAJOR) && (ESP_ARDUINO_VERSION_MAJOR >= 2) ) && ( ARDUINO_ESP32_GIT_VER != 0x46d5afb1 ) )
+    #define USING_CORE_ESP32_CORE_V200_PLUS      true
+    
+    #if (_ASYNC_MQTT_LOGLEVEL_ > 3)
+      #warning Using code for ESP32 core v2.0.0+ in AsyncMqttClient_Generic.hpp
+    #endif
+      
+    #define ASYNC_MQTT_GENERIC_VERSION        (ASYNC_MQTT_GENERIC_SHORT_VERSION " for ESP32 core v2.0.0+")
+
+  #else
+    #if (_ASYNC_MQTT_LOGLEVEL_ > 3)
+      #warning Using code for ESP32 core v1.0.6- in AsyncMqttClient_Generic.hpp
+    #endif
+    
+    #define ASYNC_MQTT_GENERIC_VERSION        (ASYNC_MQTT_GENERIC_SHORT_VERSION " for ESP32 core v1.0.6-")
+    
+  #endif
 
   #if ASYNC_TCP_SSL_ENABLED
     #include <AsyncTCP_SSL.h>
@@ -86,24 +86,24 @@
   #else
     #include <ESPAsyncTCP.h>
 
-    #define ASYNC_MQTT_GENERIC_VERSION				(ASYNC_MQTT_GENERIC_SHORT_VERSION " for ESP8266")
+    #define ASYNC_MQTT_GENERIC_VERSION        (ASYNC_MQTT_GENERIC_SHORT_VERSION " for ESP8266")
   #endif
 
 #elif ( defined(STM32F0) || defined(STM32F1) || defined(STM32F2) || defined(STM32F3)  ||defined(STM32F4) || defined(STM32F7) || \
         defined(STM32L0) || defined(STM32L1) || defined(STM32L4) || defined(STM32H7)  ||defined(STM32G0) || defined(STM32G4) || \
         defined(STM32WB) || defined(STM32MP1) )
 
   #if ASYNC_TCP_SSL_ENABLED
-  	#error STM32 ASYNC_TCP_SSL_ENABLED not ready yet
+    #error STM32 ASYNC_TCP_SSL_ENABLED not ready yet
     #include <STM32AsyncTCP_SSL.h>
     #warning STM32 ASYNC_TCP_SSL_ENABLED   
   #else
     #include <STM32AsyncTCP.h>
 
-    #define ASYNC_MQTT_GENERIC_VERSION				(ASYNC_MQTT_GENERIC_SHORT_VERSION " for STM32")
+    #define ASYNC_MQTT_GENERIC_VERSION        (ASYNC_MQTT_GENERIC_SHORT_VERSION " for STM32")
   #endif
 
-  #define ASYNC_MQTT_USING_STM32			true
+  #define ASYNC_MQTT_USING_STM32      true
 
 #else
   #error Platform not supported
@@ -302,7 +302,6 @@ class AsyncMqttClient
 
   void _sendPing();
 
-  //const char* macAddressToClientID(const uint8_t* _macAddress);
   char* macAddressToClientID(char* buffer, const uint8_t* _macAddress);
 };
 

src/AsyncMqttClient_Generic_Impl.h

@@ -177,7 +177,7 @@ AsyncMqttClient::AsyncMqttClient()
 #elif defined(ESP8266)
   sprintf(_generatedClientId, "esp8266-%06x", ESP.getChipId());
 #elif ASYNC_MQTT_USING_STM32
-	// Will create _clientId from macAddress later in connect() as ID not available now
+  // Will create _clientId from macAddress later in connect() as ID not available now
 #endif
 
   _clientId = _generatedClientId;
@@ -1125,21 +1125,21 @@ void AsyncMqttClient::connect()
     return;
 
 #if ASYNC_MQTT_USING_STM32
-	// 6 HEX bytes + NULL
-	char buffer[13];
-	
-	macAddressToClientID(buffer, Ethernet.MACAddress()); 
-	snprintf(_generatedClientId, sizeof(_generatedClientId), "stm32-%s", buffer); 
-	
-  //snprintf(_generatedClientId, sizeof(_generatedClientId), "stm32-%s", macAddressToClientID(Ethernet.MACAddress())); 
-  
+  // 6 HEX bytes + NULL
+  char buffer[13];
+
+  macAddressToClientID(buffer, Ethernet.MACAddress());
+  snprintf(_generatedClientId, sizeof(_generatedClientId), "stm32-%s", buffer);
+
+  //snprintf(_generatedClientId, sizeof(_generatedClientId), "stm32-%s", macAddressToClientID(Ethernet.MACAddress()));
+
   _clientId = _generatedClientId;
 #endif
 
   AMQTT_LOGINFO("CONNECTING");
-  
+
   AMQTT_LOGINFO1("ClientID =", _clientId);
-  
+
   _state = CONNECTING;
   _disconnectReason = AsyncMqttClientDisconnectReason::TCP_DISCONNECTED;  // reset any previous
 
@@ -1257,15 +1257,16 @@ const char* AsyncMqttClient::getClientId() const
 
 char* AsyncMqttClient::macAddressToClientID(char* buffer, const uint8_t* _macAddress)
 {
-	// 6 HEX bytes + NULL = min(13) for buffer
-	// static char buffer[13];
-	memset((void*) buffer, 0, sizeof(buffer));
-		
-	for (int i = 0; i < 6; i++)
-		sprintf(&buffer[i * 2], "%02X", _macAddress[i]); //convert number to hex
-		
+  // 6 HEX bytes + NULL = min(13) for buffer
+  // static char buffer[13];
+  memset((void*) buffer, 0, sizeof(buffer));
+
+  for (int i = 0; i < 6; i++)
+    sprintf(&buffer[i * 2], "%02X", _macAddress[i]); //convert number to hex
+
   return ( buffer );
 }
+
 /////////////////////////////////////////////////////////
 
 #endif		// ASYNC_MQTT_CLIENT_IMPL_H