Pierluigi Dalla Rosa

UPDATE: I managed to run the Sparkfun Pro Micro (ATMEGA 32u4) but using the low level IOKit/ioctl API from the Apple documentation ([here](https://developer.apple.com/library/content/samplecode/SerialPortSample/Listings/SerialPortSample_SerialPortSample_c.html#//apple_ref/doc/uid/DTS10000454-SerialPortSample_SerialPortSample_c-DontLinkElementID_4)) It will be great to make this...

I have the same issue with a 32u4. The incoming data starts if I open the serial port with another program (in my case CoolTerm, if I try to open...

Sorry this problem is actually solved already. See thread: https://github.com/armadsen/ORSSerialPort/issues/123 Setting RTS and DTR to true makes the stream of incoming serial data start: ``` func serialPortWasOpened(_ serialPort: ORSSerialPort) {...

I'm experiencing exactly the same behavior. Very annoying. Sliders don't work correctly as well.

Any updates on this issue?