yet less warnings for Wall Wextra guys

Author: d-a-v

libraries/ESP8266mDNS/ESP8266mDNS.cpp

@@ -907,7 +907,7 @@ void MDNSResponder::_replyToTypeEnumRequest(IPAddress multicastInterface) {
     if(servicePtr->_port > 0){
       char *service = servicePtr->_name;
       char *proto = servicePtr->_proto;
-      uint16_t port = servicePtr->_port;
+      //uint16_t port = servicePtr->_port;
 
 #ifdef MDNS_DEBUG_TX
       Serial.printf("TX: service:%s, proto:%s\n", service, proto);

libraries/GDBStub/src/internal/gdbstub.c

@@ -291,7 +291,7 @@ static void ATTR_GDBFN sendReason() {
 #endif
 	//exception-to-signal mapping
 	char exceptionSignal[]={4,31,11,11,2,6,8,0,6,7,0,0,7,7,7,7};
-	int i=0;
+	unsigned int i=0;
 	gdbPacketStart();
 	gdbPacketChar('T');
 	if (gdbstub_savedRegs.reason==0xff) {
@@ -321,6 +321,7 @@ static void ATTR_GDBFN sendReason() {
 
 //Handle a command as received from GDB.
 static int ATTR_GDBFN gdbHandleCommand(unsigned char *cmd, int len) {
+	(void)len; // unused
 	//Handle a command
 	int i, j, k;
 	unsigned char *data=cmd+1;
@@ -657,7 +658,7 @@ static void ATTR_GDBFN gdb_semihost_putchar1(char c) {
 //The OS-less SDK uses the Xtensa HAL to handle exceptions. We can use those functions to catch any
 //fatal exceptions and invoke the debugger when this happens.
 static void ATTR_GDBINIT install_exceptions() {
-	int i;
+	unsigned int i;
 	int exno[]={EXCCAUSE_ILLEGAL, EXCCAUSE_SYSCALL, EXCCAUSE_INSTR_ERROR, EXCCAUSE_LOAD_STORE_ERROR,
 			EXCCAUSE_DIVIDE_BY_ZERO, EXCCAUSE_UNALIGNED, EXCCAUSE_INSTR_DATA_ERROR, EXCCAUSE_LOAD_STORE_DATA_ERROR,
 			EXCCAUSE_INSTR_ADDR_ERROR, EXCCAUSE_LOAD_STORE_ADDR_ERROR, EXCCAUSE_INSTR_PROHIBITED,

libraries/Wire/Wire.cpp

@@ -71,6 +71,7 @@ void TwoWire::begin(void){
 }
 
 void TwoWire::begin(uint8_t address){
+  (void)address;
   // twi_setAddress(address);
   // twi_attachSlaveTxEvent(onRequestService);
   // twi_attachSlaveRxEvent(onReceiveService);
@@ -206,6 +207,8 @@ void TwoWire::flush(void){
 
 void TwoWire::onReceiveService(uint8_t* inBytes, int numBytes)
 {
+  (void)inBytes;
+  (void)numBytes;
   // don't bother if user hasn't registered a callback
   // if(!user_onReceive){
   //   return;
@@ -242,10 +245,12 @@ void TwoWire::onRequestService(void){
 }
 
 void TwoWire::onReceive( void (*function)(int) ){
+  (void)function;
   //user_onReceive = function;
 }
 
 void TwoWire::onRequest( void (*function)(void) ){
+  (void)function;
   //user_onRequest = function;
 }