Trying to compile the code with the latest develop version.

Sming/Arch/Host/Core/SPI.cpp

@@ -0,0 +1,14 @@
+#include "SPI.h"
+
+bool SPIClass::begin()
+{
+	return false;
+}
+
+void SPIClass::transfer(uint8_t* buffer, size_t numberBytes)
+{
+}
+
+void SPIClass::prepare(SPISettings& settings)
+{
+}

Sming/Arch/Host/Core/SPI.h

@@ -30,24 +30,18 @@
 class SPIClass : public SPIBase
 {
 public:
-	bool begin() override
-	{
-		return false;
-	}
+	bool begin() override;
 
 	void end() override
 	{
 	}
 
+	using SPIBase::beginTransaction;
 	using SPIBase::transfer;
-	void transfer(uint8_t* buffer, size_t numberBytes) override
-	{
-	}
+	void transfer(uint8_t* buffer, size_t numberBytes) override;
 
 protected:
-	void prepare(SPISettings& settings) override
-	{
-	}
+	void prepare(SPISettings& settings) override;
 };
 
 /** @brief  Global instance of SPI class */

Sming/Components/Hosted-Lib/src/SpiHosted.cpp

@@ -7,18 +7,18 @@ extern HostedClient* hostedClient;
 // define the static singleton
 SPIClass SPI;
 
-void SPIClass::begin()
+bool SPIClass::begin()
 {
 	NEW_HD_COMMAND(message, SpiBeginTransaction, { command->has_settings = 0; });
 
-	hostedClient->send(&message);
+	return hostedClient->send(&message);
 }
 
-void SPIClass::beginTransaction(SPISettings mySettings)
+void SPIClass::prepare(SPISettings& mySettings)
 {
 	NEW_HD_COMMAND(message, SpiBeginTransaction, {
 		command->has_settings = 1;
-		command->settings.speed = mySettings.speed;
+		//		command->settings.speed = mySettings.speed;
 		command->settings.byteOrder = SpiSettings_ByteOrder(mySettings.byteOrder);
 		command->settings.dataMode = SpiSettings_DataMode(mySettings.dataMode);
 	});
@@ -58,9 +58,3 @@ void SPIClass::transfer(uint8_t* buffer, size_t numberBytes)
 	resultData->readBytes(reinterpret_cast<char*>(buffer), numberBytes);
 	delete resultData;
 }
-
-uint32_t SPIClass::transfer32(uint32_t val, uint8_t bits)
-{
-	// TODO:
-	return 0;
-}

Sming/Components/Hosted-Transport/src/tcp/HostedTcpStream.h

@@ -4,7 +4,7 @@
 class HostedTcpStream : public ReadWriteStream
 {
 public:
-	HostedTcpStream(const String& host, uint16_t port) : host(host), port(port), buffer(1024)
+	HostedTcpStream(const String& host, uint16_t port) : buffer(1024), host(host), port(port)
 	{
 		auto onCompleted = [](TcpClient& client, bool successful) {
 			// onCompleted;

Sming/Components/Hosted/src/HostedClient.h

@@ -79,7 +79,7 @@ class HostedClient
 				return true;
 			},
 			.state = this->stream,
-			.bytes_left = this->stream->available(),
+			.bytes_left = (size_t)this->stream->available(),
 			.errmsg = nullptr,
 		};
 	}