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POserial port configuration using boost ASIO
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2012-09-28T13:39:43.993
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I am configuring serial port using boost asio. but why below code is giving error? If I comment set_option it works fine. below code gives error <blockquote> serial_config.cpp:13: error: expected unqualified-id before numeric constant In file included from /home/chirag/boost_install/include/boost/asio/serial_port_service.hpp:25, from /home/chirag/boost_install/include/boost/asio/basic_serial_port.hpp:30, from /home/chirag/boost_install/include/boost/asio.hpp:25, from serial_config.cpp:1: /home/chirag/boost_install/include/boost/asio/detail/reactive_serial_port_service.hpp: In static member function âstatic boost::system::error_code boost::asio::detail::reactive_serial_port_service::store_option(const void*, termios&, boost::system::error_code&) [with SettableSerialPortOption = int]â: /home/chirag/boost_install/include/boost/asio/detail/reactive_serial_port_service.hpp:126: instantiated from âboost::system::error_code boost::asio::detail::reactive_serial_port_service::set_option(boost::asio::detail::reactive_descriptor_service::implementation_type&, const SettableSerialPortOption&, boost::system::error_code&) [with SettableSerialPortOption = int]â /home/chirag/boost_install/include/boost/asio/serial_port_service.hpp:167: instantiated from âboost::system::error_code boost::asio::serial_port_service::set_option(boost::asio::detail::reactive_descriptor_service::implementation_type&, const SettableSerialPortOption&, boost::system::error_code&) [with SettableSerialPortOption = int]â /home/chirag/boost_install/include/boost/asio/basic_serial_port.hpp:390: instantiated from âvoid boost::asio::basic_serial_port::set_option(const SettableSerialPortOption&) [with SettableSerialPortOption = int, SerialPortService = boost::asio::serial_port_service]â serial_config.cpp:31: instantiated from here /home/chirag/boost_install/include/boost/asio/detail/reactive_serial_port_service.hpp:194: error: request for member âstoreâ in â*(const int*)optionâ, which is of non-class type âconst intâ </blockquote> <pre><code>#include <boost/asio.hpp> // include boost using namespace::boost::asio; // save tons of typing #include <iostream> using std::cin; // These are the values our port needs to connect #ifdef _WIN32 // windows uses com ports, this depends on what com port your cable is plugged in to. const char *PORT = "COM3"; #else // *nix com ports const char *PORT = "dev/ttyS3"; #endif // Note: all the following except BAUD are the exact same as the default values // what baud rate do we communicate at serial_port_base::baud_rate BAUD(19200); // how big is each "packet" of data (default is 8 bits) serial_port_base::character_size CSIZE( 8 ); // what flow control is used (default is none) serial_port_base::flow_control FLOW( serial_port_base::flow_control::none ); // what parity is used (default is none) serial_port_base::parity PARITY( serial_port_base::parity::none ); // how many stop bits are used (default is one) serial_port_base::stop_bits STOP( serial_port_base::stop_bits::one ); int main() { // create the I/O service that talks to the serial device io_service io; // create the serial device, note it takes the io service and the port name serial_port port( io, PORT ); // go through and set all the options as we need them // all of them are listed, but the default values work for most cases port.set_option( BAUD ); port.set_option( CSIZE ); port.set_option( FLOW ); port.set_option( PARITY ); port.set_option( STOP ); // buffer to store commands // this device reads 8 bits, meaning an unsigned char, as instructions // varies with the device, check the manual first unsigned char command[1] = {0}; // read in user value to be sent to device int input; cin >> input; // Simple loop, since the only good values are [0,255] // break when a negative number is entered. // The cast will convert too big numbers into range. while( input >= 0 ) { // convert our read in number into the target data type command[0] = static_cast<unsigned char>( input ); // this is the command that sends the actual bits over the wire // note it takes a stream and a asio::buffer // the stream is our serial_port // the buffer is constructed using our command buffer and // the number of instructions to send write( port, buffer( command, 1 ) ); // read in the next input value cin >> input; } // all done sending commands return 0; } </code></pre>
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<linux><embedded><serial-port><boost-asio>
Title
serial port configuration using boost ASIO
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1. PO
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1. USChirag Desai
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