-#ifdef WIN32
-#include <windows.h>
-#else
-#include <termios.h>
-#include <fcntl.h>
-#include <errno.h>
-#endif
-#include <msp/strings/format.h>
-#include <msp/core/systemerror.h>
#include "serial.h"
+#include "serial_private.h"
using namespace std;
-namespace {
-
-using namespace Msp;
-using namespace Msp::IO;
-
-#ifdef WIN32
-typedef DCB DeviceState;
-#else
-typedef termios DeviceState;
-#endif
-
-void get_state(Handle handle, DeviceState &state)
-{
-#ifdef WIN32
- GetCommState(handle, &state);
-#else
- tcgetattr(handle, &state);
-#endif
-}
-
-void set_state(Handle handle, DeviceState &state)
-{
-#ifdef WIN32
- if(SetCommState(handle, &state)==0)
- throw system_error("SetCommState");
-#else
- if(tcsetattr(handle, TCSADRAIN, &state)==-1)
- throw system_error("tcsetattr");
-#endif
-}
-
-void set_baud_rate(DeviceState &state, unsigned baud)
-{
-#ifdef WIN32
- state.BaudRate = baud;
-#else
- speed_t speed;
- switch(baud)
- {
- case 0: speed = B0; break;
- case 50: speed = B50; break;
- case 75: speed = B75; break;
- case 110: speed = B110; break;
- case 134: speed = B134; break;
- case 150: speed = B150; break;
- case 200: speed = B200; break;
- case 300: speed = B300; break;
- case 600: speed = B600; break;
- case 1200: speed = B1200; break;
- case 1800: speed = B1800; break;
- case 2400: speed = B2400; break;
- case 4800: speed = B4800; break;
- case 9600: speed = B9600; break;
- case 19200: speed = B19200; break;
- case 38400: speed = B38400; break;
- case 57600: speed = B57600; break;
- case 115200: speed = B115200; break;
- case 230400: speed = B230400; break;
- default: throw invalid_argument("set_baud_rate");
- }
-
- cfsetospeed(&state, speed);
- cfsetispeed(&state, speed);
-#endif
-}
-
-void set_data_bits(DeviceState &state, unsigned bits)
-{
-#ifdef WIN32
- state.ByteSize = bits;
-#else
- tcflag_t flag;
- switch(bits)
- {
- case 5: flag = CS5; break;
- case 6: flag = CS6; break;
- case 7: flag = CS7; break;
- case 8: flag = CS8; break;
- default: throw invalid_argument("set_data_bits");
- }
-
- state.c_cflag = (state.c_cflag&~CSIZE)|flag;
-#endif
-}
-
-void set_parity(DeviceState &state, Serial::Parity par)
-{
-#ifdef WIN32
- switch(par)
- {
- case Serial::NONE: state.Parity = NOPARITY; break;
- case Serial::EVEN: state.Parity = EVENPARITY; break;
- case Serial::ODD: state.Parity = ODDPARITY; break;
- default: throw invalid_argument("set_parity");
- }
-#else
- tcflag_t flag;
- switch(par)
- {
- case Serial::NONE: flag = 0; break;
- case Serial::EVEN: flag = PARENB; break;
- case Serial::ODD: flag = PARENB|PARODD; break;
- default: throw invalid_argument("set_parity");
- }
-
- state.c_cflag = (state.c_cflag&~(PARENB|PARODD))|flag;
-#endif
-}
-
-void set_stop_bits(DeviceState &state, unsigned bits)
-{
-#ifdef WIN32
- switch(bits)
- {
- case 1: state.StopBits = ONESTOPBIT; break;
- case 2: state.StopBits = TWOSTOPBITS; break;
- default: throw invalid_argument("set_stop_bits");
- }
-#else
- tcflag_t flag;
- switch(bits)
- {
- case 1: flag = 0; break;
- case 2: flag = CSTOPB; break;
- default: throw invalid_argument("set_stop_bits");
- }
-
- state.c_cflag = (state.c_cflag&~CSTOPB)|flag;
-#endif
-}
-
-}
-
-
namespace Msp {
namespace IO {
-Serial::Serial(const string &descr)
+Serial::Serial(const string &descr):
+ reader(handle, 1024)
{
string::size_type comma = descr.find(',');
string port = descr.substr(0, comma);
-#ifdef WIN32
- port = "\\\\.\\"+port;
-
- handle = CreateFile(port.c_str(), GENERIC_READ|GENERIC_WRITE, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
- if(handle==INVALID_HANDLE_VALUE)
- throw system_error(format("CreateFile(%s)", port));
- mode = M_READ|M_WRITE;
-
- COMMTIMEOUTS timeouts;
- timeouts.ReadIntervalTimeout = MAXDWORD;
- timeouts.ReadTotalTimeoutMultiplier = MAXDWORD;
- timeouts.ReadTotalTimeoutConstant = MAXDWORD-1;
- timeouts.WriteTotalTimeoutMultiplier = 0;
- timeouts.WriteTotalTimeoutConstant = 0;
- SetCommTimeouts(handle, &timeouts);
-#else
- if(port.compare(0, 5, "/dev/"))
- port = "/dev/"+port;
-
- handle = open(port.c_str(), O_RDWR);
- if(handle==-1)
- throw system_error(format("open(%s)", port));
- mode = M_READ|M_WRITE;
-
- termios t;
- tcgetattr(handle, &t);
- t.c_lflag &= ~(ECHO|ICANON);
- t.c_oflag &= ~OPOST;
- tcsetattr(handle, TCSADRAIN, &t);
-#endif
+ platform_init(port);
if(comma!=string::npos)
{
void Serial::close()
{
-#ifdef WIN32
- CloseHandle(handle);
-#else
- ::close(handle);
-#endif
+ sys_close(handle);
}
void Serial::set_block(bool b)
{
- if(b)
- mode = mode|M_NONBLOCK;
- else
- mode = mode&~M_NONBLOCK;
+ adjust_mode(mode, M_NONBLOCK, !b);
+ sys_set_blocking(handle, b);
+}
-#ifndef WIN32
- int flags = fcntl(handle, F_GETFD);
- fcntl(handle, F_SETFL, (flags&O_NONBLOCK)|(b?0:O_NONBLOCK));
-#endif
+void Serial::set_inherit(bool i)
+{
+ adjust_mode(mode, M_INHERIT, i);
+ sys_set_inherit(handle, i);
}
void Serial::set_baud_rate(unsigned rate)
{
DeviceState state;
- get_state(handle, state);
- ::set_baud_rate(state, rate);
- set_state(handle, state);
+ state.get_from(handle);
+ state.set_baud_rate(rate);
+ state.apply_to(handle);
}
void Serial::set_data_bits(unsigned bits)
{
DeviceState state;
- get_state(handle, state);
- ::set_data_bits(state, bits);
- set_state(handle, state);
+ state.get_from(handle);
+ state.set_data_bits(bits);
+ state.apply_to(handle);
}
void Serial::set_parity(Parity par)
{
DeviceState state;
- get_state(handle, state);
- ::set_parity(state, par);
- set_state(handle, state);
+ state.get_from(handle);
+ state.set_parity(par);
+ state.apply_to(handle);
}
void Serial::set_stop_bits(unsigned bits)
{
DeviceState state;
- get_state(handle, state);
- ::set_stop_bits(state, bits);
- set_state(handle, state);
+ state.get_from(handle);
+ state.set_stop_bits(bits);
+ state.apply_to(handle);
}
void Serial::set_parameters(const string ¶ms)
throw invalid_argument("Serial::set_parameters stop_bits");
DeviceState state;
- get_state(handle, state);
- ::set_baud_rate(state, lexical_cast<unsigned>(params.substr(0, i)));
- ::set_data_bits(state, params[i+1]-'0');
- ::set_parity(state, (params[i+2]=='E' ? EVEN : params[i+2]=='O' ? ODD : NONE));
- ::set_stop_bits(state, params[i+3]-'0');
- set_state(handle, state);
+ state.get_from(handle);
+ state.set_baud_rate(lexical_cast<unsigned>(params.substr(0, i)));
+ state.set_data_bits(params[i+1]-'0');
+ state.set_parity((params[i+2]=='E' ? EVEN : params[i+2]=='O' ? ODD : NONE));
+ state.set_stop_bits(params[i+3]-'0');
+ state.apply_to(handle);
}
unsigned Serial::do_write(const char *buf, unsigned size)
if(size==0)
return 0;
-#ifdef WIN32
- DWORD ret;
- if(WriteFile(handle, buf, size, &ret, 0)==0)
- throw system_error("WriteFile");
-#else
- int ret = ::write(handle, buf, size);
- if(ret==-1)
- {
- if(errno==EAGAIN)
- return 0;
- else
- throw system_error("write");
- }
-#endif
-
- return ret;
+ return sys_write(handle, buf, size);
}
unsigned Serial::do_read(char *buf, unsigned size)
if(size==0)
return 0;
-#ifdef WIN32
- DWORD ret;
- if(ReadFile(handle, buf, size, &ret, 0)==0)
- throw system_error("ReadFile");
-#else
- int ret = ::read(handle, buf, size);
- if(ret==-1)
- {
- if(errno==EAGAIN)
- return 0;
- else
- throw system_error("read");
- }
-#endif
+ unsigned ret = reader.read(buf, size);
+ if(ret==0)
+ set_eof();
return ret;
}
-Handle Serial::get_event_handle()
+const Handle &Serial::get_handle(Mode m)
{
-#ifdef WIN32
- throw logic_error("Serial port events not supported on win32 yet");
-#else
+ check_access(m);
return handle;
-#endif
}
} // namespace IO
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