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serial_port_write.cpp
#include <libserial/SerialPort.h>
#include <cstdlib>
#include <fstream>
#include <iostream>
constexpr const char* const SERIAL_PORT_2 = "/dev/ttyUSB1" ;
int main(int argc, char** argv)
{
using namespace LibSerial ;
// Determine if an appropriate number of arguments has been provided.
if (argc < 2)
{
// Error message to the user.
std::cerr << "Usage: " << argv[0] << " <filename>" << std::endl ;
// Exit the program if no input file argument has been given.
return 1 ;
}
// Open the input file for reading.
std::ifstream input_file(argv[1]) ;
// Determine if the input file argument is valid to read data from.
if (!input_file.good())
{
std::cerr << "Error: Could not open file "
<< argv[1] << " for reading." << std::endl ;
return 1 ;
}
// Instantiate a SerialPort object.
SerialPort serial_port ;
try
{
// Open the Serial Port at the desired hardware port.
serial_port.Open(SERIAL_PORT_2) ;
}
catch (const OpenFailed&)
{
std::cerr << "The serial port did not open correctly." << std::endl ;
return EXIT_FAILURE ;
}
// Set the baud rate of the serial port.
serial_port.SetBaudRate(BaudRate::BAUD_115200) ;
// Set the number of data bits.
serial_port.SetCharacterSize(CharacterSize::CHAR_SIZE_8) ;
// Turn off hardware flow control.
serial_port.SetFlowControl(FlowControl::FLOW_CONTROL_NONE) ;
// Disable parity.
serial_port.SetParity(Parity::PARITY_NONE) ;
// Set the number of stop bits.
serial_port.SetStopBits(StopBits::STOP_BITS_1) ;
// Read characters from the input file and write them to the serial port.
std::cout << "Writing input file contents to the serial port." << std::endl ;
while (input_file)
{
// Create a variable to store data from the input file and write to the
// serial port.
char data_byte ;
// Read data from the input file.
input_file.read(&data_byte, 1) ;
// Write the data to the serial port.
serial_port.WriteByte(data_byte) ;
// Wait until the data has actually been transmitted.
serial_port.DrainWriteBuffer() ;
// Print to the terminal what is being written to the serial port.
std::cout << data_byte ;
}
// Successful program completion.
std::cout << "The example program successfully completed!" << std::endl ;
return EXIT_SUCCESS ;
}
LibSerial::OpenFailed
Exception error thrown when the serial port could not be opened.
Definition SerialPortConstants.h:156
LibSerial::SerialPort
SerialPort allows an object oriented approach to serial port communication. A serial port object can ...
Definition SerialPort.h:56
LibSerial::SerialPort::SetBaudRate
void SetBaudRate(const BaudRate &baudRate)
Sets the baud rate for the serial port to the specified value.
Definition SerialPort.cpp:570
LibSerial::SerialPort::SetParity
void SetParity(const Parity &parityType)
Sets the parity type for the serial port.
Definition SerialPort.cpp:606
LibSerial::SerialPort::Open
void Open(const std::string &fileName, const std::ios_base::openmode &openMode=std::ios_base::in|std::ios_base::out)
Opens the serial port associated with the specified file name and the specified mode.
Definition SerialPort.cpp:514
LibSerial::SerialPort::WriteByte
void WriteByte(char charbuffer)
Writes a single byte to the serial port.
Definition SerialPort.cpp:768
LibSerial::SerialPort::SetFlowControl
void SetFlowControl(const FlowControl &flowControlType)
Sets flow control for the serial port.
Definition SerialPort.cpp:594
LibSerial::SerialPort::SetCharacterSize
void SetCharacterSize(const CharacterSize &characterSize)
Sets the character size for the serial port.
Definition SerialPort.cpp:582
LibSerial::SerialPort::DrainWriteBuffer
void DrainWriteBuffer()
Waits until the write buffer is drained and then returns.
Definition SerialPort.cpp:528
LibSerial::SerialPort::SetStopBits
void SetStopBits(const StopBits &stopBits)
Sets the number of stop bits to be used with the serial port.
Definition SerialPort.cpp:618