Michael Caisse
Using the asio serial port is just like using the socket after you have one opened and going.
To get things going:
Construct the serial port with the associated io_service as with other ASIO services...
asio::serial_port port( io_service );
Next, open the device and setup various options. I have found that the defaults among various OS's for the asio serial port differ. It can create real headaches so I initialize everything that I like:
port.open( "/dev/ttyUSB0" ); // or whatever the device might be
if( !port.is_open() ){ // do something clever if the open failed }
typedef boost::asio::serial_port_base asio_serial;
port.set_option( asio_serial::baud_rate( baud ) ); port.set_option( asio_serial::flow_control(
asio_serial::flow_control::none ) );
port.set_option( asio_serial::parity( asio_serial::parity::none ) ); port.set_option( asio_serial::stop_bits( asio_serial::stop_bits::one ) ); port.set_option( asio_serial::character_size( 8 ) );
Then just use the port as you would a socket. For example,
port.async_read_some( asio::buffer( in_message, MAX_MESSAGE_SIZE ), boost::bind( &my_client::read_done, shared_from_this(), asio::placeholders::error,
asio::placeholders::bytes_transferred ) );
HTH, michael
I'd really like to thank Jeff Gray for his serial example as well as Markus and Michael for the guidance to get me started. I used Mr. Gray's example which at first didn't work in my particular case because of some configuration options that are missing but then I configured the port as suggested by Michael and next thing I knew I was reading from and writing to a hobby microcontroller that I was given. I still have quite a bit to learn though. Thank you