digitalWrite geht

drv/b15f.cpp

@@ -11,6 +11,7 @@ void B15F::init()
 {
 	
 	std::cout << PRE << "Stelle Verbindung mit Adapter her... " << std::flush;
+	usart.setBaudrate(BAUDRATE);
 	usart.openDevice(SERIAL_DEVICE);	
 	std::cout << "OK" << std::endl;
 	

drv/usart.cpp

@@ -67,7 +67,7 @@ uint8_t USART::readByte(void)
 	auto start = std::chrono::steady_clock::now();
 	auto end = start;
 	uint16_t elapsed = 0;
-	while(elapsed < timeout)
+	while(elapsed < timeout * 100)
 	{
 		int n_ready;
 		int code = ioctl(file_desc, FIONREAD, &n_ready);

main.cpp

@@ -182,10 +182,11 @@ void beispielFunktionen()
 int main()
 {
 	
-	USART usart;
-	usart.openDevice("/dev/ttyUSB0");
-	usart.closeDevice();
+	beispielFunktionen();
 	
+	//USART usart;
+	//usart.openDevice("/dev/ttyUSB0");
+	//usart.writeByte(5);
 	
 	
 	std::cout << "Schluss." << std::endl;