alexbernardino
commented
3 months ago Managed to make it work by explicitly initializing flow_control after opening the port: sp.set_option(serial_port_base::flow_control{}, ec);
On contrary to linux and mac, in windows in seems necessary to do this explicit initialization, no matter what option is used in flow control (hardware, software, none).
Boost asio 1.84.0 serial port read functions are not working in windows. The runtime blocks in line 438 of win_iocp_iocontext.ipp : BOOL ok = ::GetQueuedCompletionStatus(iocp.handle, &bytes_transferred, &completion_key, &overlapped, msec < gqcstimeout ? msec : gqcstimeout);